This document was written in 1995 but holds a wealth of information related to AX25 Packet Radio which is still valid today.
Linux HAM-HOWTO, Amateur Radio. Terry Dawson, VK2KTJ, 94004531@postoffice.csu.edu.au v1.9, 21 November 1995 It is hoped that this document will assist Amateur Radio operators in finding and trying the various amateur radio software that has been written for or ported to Linux. It is also hoped that as a consequence of this information being available that more amateur radio operators will choose Linux as the platform of choice for their experimentation, and that software developers will choose Linux as the platform for their software development, further expanding the role of operating systems like Linux in the Amateur Radio field. This document also provides some detailed information on how to configure and install some of the more important pieces of software. ______________________________________________________________________ Table of Contents: 1. Introduction. 1.1. Changes from the previous version 2. Where to obtain new versions of this document. 3. Satellite Software. 3.1. MicroSat Ground Station Software 3.2. SatTrack - Satellite tracking program 4. Shack Automation Software. 4.1. FT-890 remote control 5. Packet Radio 5.1. Kernel Based AX.25 networking. 5.2. JNOS 5.3. TNOS 5.4. N0ARY Packet BBS for UN*X 5.5. MBL/RLI message to NNTP and email converter. 5.6. Packet Cluster Node software 5.7. Single floppy disk AX.25 router. 5.8. TNT. 5.9. IPIP encapsulation daemon. 5.10. AXIP encapsulation daemon. 5.11. Ping-Pong Convers Server 5.12. AX.25 digipeater for Linux 5.13. Gracilis PacketTwin kernel driver 5.14. RSPF Daemon 5.15. Z8530 SCC driver. 5.16. Multidrop kiss program. 6. Morse Code 6.1. GW4PTS Morse trainer. 6.2. morse (aka superiormorse) 7. AMTOR Software. 8. PACTOR Software. 9. Slow Scan Television Software. 10. Facsimile Software. 11. Design and Construction Software. 11.1. Software Oscilloscope 11.2. Printed Circuit Board design tool. 11.3. Chipmunk circuit design and simulation tool 11.4. irsim 11.5. Spice vers. 3f4 11.6. svgafft - Spectrum analyser 11.7. Audio Spectrum Analyser 12. Training/Educational Software. 13. Miscellaneous Software. 13.1. Linux for HAMS CD-ROM 13.2. SunClock 13.3. Xearth 14. Installation, Configuration, Hints and Tricks. 14.1. AX.25/NetRom - Packet Radio protocol software. 14.1.1. Where to obtain the AX.25/Netrom software. 14.1.2. Installing the AX.25 software. 14.1.2.1. The kernel source. 14.1.2.2. The user programs. 14.1.3. Configuring an AX.25 connected mode interface. 14.1.4. Configuring Linux to accept Incoming AX.25 connections. 14.1.5. Configuring an AX.25 interface for tcp/ip. 14.1.6. Configuring an AX.25 interface for Netrom. 14.2. Ottawa PI/PI2 card driver. 14.3. HOWTO link NOS and the Linux kernel networking software 15. How to contribute or update an entry. 16. Discussion relating to Amateur Radio and Linux. 17. Copyright. ______________________________________________________________________ 1. Introduction. This list was prompted by comments that had been expressed in the various Linux newsgroups about the number of amateur radio operators that were involved with Linux. It is now clear that Linux is becoming a popular platform for Amateur Radio development work. This list was originally called the RADIOLINUX list, but has been moved into the Linux Documentation Project HOWTO collection, so it has been renamed the HAM-HOWTO. I make no apologies for the name. 1.1. Changes from the previous version Additions: Netrom configuration details. mkiss - multidrop KISS support. DARC Web site. Corrections: Updated AX.25 section. Updated Microsat section. Updated sattrack. Update JNOS section. Updated Packettwin driver. Updated RSPF daemon. Other fixes as submitted by contributors - thanks. 2. Where to obtain new versions of this document. This list will be periodically posted to the comp.os.linux.announce newsgroup, and to the HAMS list on niksula.hut.fi. It is also available from the following World Wide Web sites: The Linux Documentation Project runs a Web Server and this list appears there as The HAM-HOWTO <http://sunsite.unc.edu/mdw/HOWTO/HAM- HOWTO.html>. Dennis Boylan N4ZMZ <dennis@nanovx.atl.ga.us> makes it available at the following three locations: www.com <http://www.com/linux/radio/index.html>, www.hboc.com <http://www.hboc.com/linux/index.html> and www.lan.com <http://www.lan.com/linux/index.html>. John Gotts N8QDW <jgotts@engin.umich.edu> makes it available at: www.engin.umich.edu <http://www- personal.engin.umich.edu/~jgotts/linuxhamsoft.html>. Dan Todd <dantodd@fusilli.ucdavis.edu> makes it available at the following two locations: wheel.dcn.davis.ca <http://wheel.dcn.davis.ca/~dantodd/Linux/HAM-HOWTO.html>, and fusilli.ucdavis.edu <http://fusilli.ucdavis.edu/Linux/HAM-HOWTO.html>. Alan Hargreaves VK2KVF <alan@dap.CSIRO.AU> makes it available in Australia at: www.dap.csiro.au <http://www.dap.csiro.au/RadioLinux>. The Tuebingen Radio Club has it available from their home page at: DARC Home Page <http://www.neckar-alb.de/darc/welcome.html> Please let me know if you'd like to make it available somewhere too. I'd like to see it on some Web Servers that are accessible from radio. 3. Satellite Software. The following software is for use in experimentation with Satellite communication. 3.1. MicroSat Ground Station Software Author John Melton, G0ORX/N6LYT, g0orx@amsat.org and Jonathan Naylor G4KLX, g4klx@amsat.org Description Microsat Ground Station software. Status BETA. Version 0.9-Xaw released. System requirements Alan Cox's kernel based AX.25 support ver 1.1.12 or better. X- Windows. The programs make use of the Athena Widgets and look much better with the 3D libraries. Detail This software allows you to use of a KISS tnc to directly communicate with the Microsat series of satellites. It provides an Athena Widgets based X-Windows interface, and allows you a comprehensive range of means of interacting with the satellite. The software should work with any window manager. The software provides the following programs: xpb: broadcast monitor xpg: ftl0 file upload program, message upload program xtlm: telemetry display program downloaded: downloaded file list viewer directory: directory list viewer message: message preparation application viewtext: uncompressed ASCII text file viewer viewlog: display the contents of some log files xweber: special program for downloading webersat images phs: general purpose PACSAT header stripper Where and How to obtain it. John's software is available from: ftp.amsat.org <ftp://ftp.amsat.org/amsat/software/Linux/microsat-0.9-Xaw.tar.gz> or ftp.funet.fi <ftp://ftp.funet.fi/pub/ham/satellite/pacsat/microsat-0.9-Xaw.tar.gz>. Please check for new versions. Licensing/Copyright GNU Public License. Freely redistributable, No warranty. Contributed by: John Melton, G0ORX/N6LYT, Alan Cox, GW4PTS, Jonathon Naylor, G4KLX 3.2. SatTrack - Satellite tracking program Name SatTrack Author Manfred Bester, DL5KR, manfred@ssl.berkeley.edu, (510) 849-9922 Description Satellite realtime tracking and orbit prediction program with X11 color graphics. Status Version 3.1 has been released. System requirements A vt100 terminal and or X11 server. A Maths Coprocessor is useful, but not essential, for good performance. Detail SatTrack is a satellite tracking program that has been written in 'C' language on a UNIX workstation. It provides two different live displays, for single or multiple satellites, and two different orbit prediction facilities. Cursor controls used in both live displays are compatible with the VT100 standard, which allows the program to be run basically from any terminal. An optional X Window graphics display shows the typical world map tracking chart. The orbit prediction can be run either interactively or in a batch mode. In the latter case all necessary parameters are specified on the command line. The program uses the NORAD/NASA two-line Keplerian element (TLE) sets directly. The current version of SatTrack can track a single satellite and/or display multiple satellites for a single ground station. It also can control suitable ground station hardware, like antennas and radio equipment, and has an autotrack mode in which it switches automatically between a number of specified satellites. For calibration purposes tracking of the Sun and the Moon are also provided. Future releases will provide more options. SatTrack requires about 5 MB of disk space in the full distribution with eight different world maps (2 styles, with 4 different sizes each, to fit everyone's screen and taste) and less than 1.5 MB of memory at run time. More information can be obtained from the SatTrack WWW Home Page <http://www.primenet.com/~bester/sattrack.html> Compiling the software under Linux is quite straightforward. Manfred has designed the Makefile to compile the software directly under your home directory, this is easy to change. The steps I took were: # cd /usr/src # export HOME=/usr/src # gzip -dc sattrack-3.1.1.tar.gz | tar xvf - # cd SatTrack/src # vi Makefile {Comment SUN4 compile options} {Uncomment the linux options} {Select the options you want} # make Where and How to obtain it. SatTrack can be found at: ftp.amsat.org <ftp://ftp.amsat.org/amsat/software/Linux/sattrack-3.1.1.tar.gz> or ftp.jvnc.net <ftp://ftp.jvnc.net/priv/kupiec/sattrack/sattrack-3.1.1.tar.gz> or the SatTrack WWW Home Page <http://ssl.berkeley.edu/isi_www/sattrack-3.1.1.tar.gz> Licensing/Copyright The software is Copyright of Manfred Bester. It can be used without special permission for non-profit, non-commercial use. For commercial applications a license from the author is required. Contributed by: Manfred Bester, DL5KR 4. Shack Automation Software. Software for simplifying tasks in the shack. Examples might include software for controlling the newer breed of radios, logging programs, QSL database, or antenna rotation. 4.1. FT-890 remote control Author Emarit Ranu, drranu@holly.ColoState.EDU, KG0CQ. Description A simple program to control a Yaesu FT-890 transciever via its CAT port from linux. Status Working System requirements Yaesu FT-890, Yaesu FIF-232C interface converter or homebuilt equivalent (Feb 1993 "QST", page 37). Linux, serial cable. Detail The program is started with one parameter specifying the com port to use. Once started the program is menu driven. Future versions will support an X-Windows interface. Where and How to obtain it. The software is currently only available from the author by email. Licensing/Copyright You may copy this program millions of times, the only restrictions are: o You may not charge ANYONE for the program itself. o You may not distribute modified versions of the program. o If you distribute the program, it MUST be the ORIGINAL tar file as received by the author. The README file has to be included. Contributed by: Emarit Ranu, drranu@holly.ColoState.EDU 5. Packet Radio Software for use in conjunction with, or for facilitating packet radio. 5.1. Kernel Based AX.25 networking. Author Jonathon Naylor, G4KLX, jsn@cs.nott.ac.uk and Alan Cox, GW4PTS, iialan@iifeak.swan.ac.uk Description Software that provides native AX.25 support in the Linux Kernel. Status ALPHA. Still under development. In a working state. System requirements Linux kernel 1.3.*, or kernel 1.2.* plus patches. Detail Jonathon's software provides the programmer with a berkeley socket based interface to the AX.25 protocol. AX.25 sockets can opened for either connected, or connectionless modes of operation. Support to allow tcp/ip over AX.25 is provided. Jonathon has recently added NetRom support and provided fixes and other enhancements to the code. The software comes in two parts, a kernel patch, and the configuration tools and user programs. The user programs included in the most recent distribution are: axassociate to associate a particular AX.25 callsign with a userid on your system. axattach to convert a serial device into a KISS device. axl an AX.25 listener designed to start a PMS when it receives an incoming connection. The PMS is still very new. axsetcall to change the callsign of a port. beacon generated beacon messages every 30 minutes. call A linemode AX.25 connection program. Call allows you to make connections to other AX.25 nodes. It provides file transmit and receive capabilities, and newer versions allow YAPP binary file transfers. listen a packet trace tool for radio links. mheard a program to display callsign heard on radio ports. netromd a daemon program to generate netrom routing broadcasts. noderest a program to restore netrom routing information from a file. nodesave a program to save netrom routing information to a file. nrparms a program to configure a netrom interface. rip98d an implementation of the rip98 routing protocol. Where and How to obtain it. There are a number of different versions of the software. You must choose the one that suits your version of Linux kernel. Software for kernel versions older than 1.3.* is available from: ftp.linux.org.uk <ftp://ftp.linux.org.uk/pub/linux/Radio/> More detail on where and how to obtain the software is provided in the AX.25 section of the `Installation, Configuration, Hints and Tricks' chapter below. Licensing/Copyright Most of the software is covered by the GNU Public License, some of the software is Copyright by the Regents of University California Berkeley. 5.2. JNOS Author Brandon Allbery, KF8NH, bsa@kf8nh.wariat.org Description Brandon ported JNOS to Linux. His port is currently of the 1.09 (aka 1.08df) release of JNOS. Future versions will probably be based on Doug Crompton's evolution of 1.08df. Brandon suggests that JNOS for Linux is primarily of interest to people with existing DOS-based NOS configurations (especially server/switch configurations) who wish to switch to Linux or to escape the 640K barrier. Status Brandons code was rolled back into the main jnos distribution, so development on the two runs in parallel. System Requirements. Any version of Linux along with ncurses 1.8.1 or 1.8.5 (the latter is preferred). Optionally you will require Linux networking (at least loopback and slip). Detail If you include the Linux networking code in addition to JNOS, you can link the two by a slip link running over a pty, so that Linux can provide services to your radio users. In this way you can easily add servers without having to build them into JNOS itself. Where and How to obtain it. You can obtain JNOS for Linux ALPHA.4 at: ftp.ucsd.edu <ftp://ftp.ucsd.edu/hamradio/packet/tcpip/jnos/jnos110i.zip> ncurses is available on most Linux ftp sites. Licensing/Copyright Brandon's modifications to JNOS are public domain. Most of the pre-existing NOS code is copyrighted and restricted to non- commercial use by the various contributors from Phil Karn on. Contributed by: Brandon Allbery, KF8NH 5.3. TNOS Author Brian A. Lantz, brian@lantz.com Description TNOS is a NOS derivative that is being actively supported and which is available for both DOS and Linux. It features enhancements not found in other NOS versions. Status The current version is 2.0 and is stable. System Requirements Kernel networking slip support if you want to link the normal Linux network facilities with TNOS. A kiss tnc. Detail Brian maintains a World Wide Web server which contains up to date information on TNOS, you can find it at www.lantz.com <http://www.lantz.com/tnos/tnos.html>. Where and how to obtain it The current version of TNOS is always available from: ftp.lantz.com <ftp://ftp.lantz.com/tnos/current/linux/>, sunsite.unc.edu <ftp://sunsite.unc.edu/pub/Linux/apps/ham/>, or ftp.ucsd.edu <ftp://ftp.ucsd.edu/hamradio/packet/tcpip/linux/>. Licensing/Copyright etc. Free for use by amateur radio operators and educational oraganisations 5.4. N0ARY Packet BBS for UN*X Author Bob Arasmith, N0ARY, ported to Linux (and others) by Bob Proulx, KF0UW, rwp@fc.hp.com Description A packet bbs implemented under UN*X. Status ALPHA. Bob is running version ARY-0.9 on both Linux and HP-UX. The next version from N0ARY which is called 4.0 is in alpha test/development release. Bob has not been able to bring this online yet and is still running 0.9+kf0uw mods. Bob has about half it working with Alan Cox's AX.25 kernel which would be the desirable combination. System Requirements. Linux installation, C Compiler, plus HAM radio TNC hardware. Detail This bbs has an excellent packet user interface. It has a compatible set of commands with the RLI bbs so users will be familiar with it immediately. It then extends the command set to be a very nice natural language style interface (e.g "list at allus about KPC-3"). Many csh style bang commands are supported. Also included is a mail interface to provide a packet to internet gateway. Currently you need to customize the source code for your installation so you need some C programming proficiency. Where and How to obtain it. For a Linux version or for Linux information send mail to rwp@fc.hp.com. For a SunOS version contact bob@arasmith.com. This code is not packaged for distribution yet since it is not past the alpha stage of development. Licensing/Copyright Copyright by Bob Arasmith, N0ARY, but freely redistributable. Contributed by: Bob Proulx, kf0uw, rwp@fc.hp.com 5.5. MBL/RLI message to NNTP and email converter. Author SM0OHI, pme@it.kth.se Description Software that will convert incoming MBL/RLI messages into either NNTP or RFC-822 formatted mail messages. Status Development, not yet released. System requirements Unknown. Detail This software would be ideally suited to those who want to establish a mail and news gateway between conventional tcp/ip networks and the amateur radio mail network. Where and How to obtain it. Not yet availale. Licensing/Copyright Unknown. Contributed by: SM0OHI 5.6. Packet Cluster Node software Author Franta Bendl, DJ0ZY, and Bernhard ("Ben") Buettner, DL6RAI, root@dl6rai.muc.de Description A PacketCluster like system running on Linux. Status Released in October 1995. System Requirements Linux Kernel version 1.2.0 or greater with Alan Cox's AX.25 version 025 driver, TCP/IP networking, SysV IPC. Also needs Perl and KISS TNC hardware on serial device. Detail PacketCluster nodes have been available for about six years. The original software was written by Dick Newell, AK1A, and is running under DOS. clx is a system which clones a PacketCluster node. To the outside user commands and features are mostly identical, remote PacketCluster nodes, which can be networked, don't see the difference between a generic PacketCluster node and clx. So it fits well into an established network of PacketCluster nodes. clx is not a user application, it is network node software. As such it is not of much use for the individual amateur. SysOPs of PacketCluster nodes with some experience on both PacketCluster and Linux will find this application interesting. Here are some of the features of CLX: o It is fully compatible with the internal PCxx protocol and from a users' point of view. It allows multitasking and different priorities for different things. o The software detects looping DX spots without generating endless messages. clx filters out such duplicate information. We have implemented a concept which allows us to connect the network at multiple points, which would formerly have been called a "Cluster Loop". clx knows of so-called "active" and "passive" links. The outcome is that more DX information is seen by clx. o An interface to call your external programs (even dialog programs). o clx uses modern programming concepts like shared memory for common data, lex & yacc to implement command language, shared libraries to keep binaries small (this is still on our wish list), remote procedure calls for inter process communication. It is strictly modularized with its own dedicated process for every major task. o Comprises the following modules: con_ctl interfaces AX.25 kernel code and provides a socket for local users. rcv_ctl manages receive spooling. snd_ctl manages transmit spooling. rm_disp receive message dispatcher, forwards messages to other processes. usr_req user database requests, forks a process for every database task to make it run in the background. The background process later sends the results directly to send_ctl. mb_ctl mailbox control. The mailbox keeps messages in a file system, header information is stored in the database. usr_ctl user administration (logins, logouts, logbook). usc_mng manages external user commands and command extensions. iu_com inter user communication (talk, conference). send_ctl transmit spooling, handling priorities. icl_com inter node communication (processing and generating PCxx messages). clx_ctl system administration, installing shared memory pages. int_com manages internal program communications. o The following is the only application program which can be run on the console: loc_usr allows console operator(s) to log in like a normal user. Future enhance planned are: o A console monitor to watch ongoing activities o Speed optimization o An internal clx protocol o An additional command shell for experienced users Where and How to obtain it: ftp.funet.fi <ftp://ftp.funet.fi/pub/ham/unix/Linux/cluster> There are five files that make up the package: o 00Index o clx_200.tgz o install.clx o README Licensing/Copyright clx (c) by Franta Bendl (DJ0ZY) and is available for non- commercial use, but the authors want to keep track of who is using their product, so before you can actually use the software you have to ask for an encrypted callsign string to be placed in the configuration file. You must send mail to <clx_us@dl6rai.muc.de> to organise this. Contributed by: Bernhard ("Ben") Buettner, DL6RAI 5.7. Single floppy disk AX.25 router. Author Alan Cox, GW4PTS, iialan@iifeak.swan.ac.uk Description A single floppy disk version of linux with enough software to allow a PC to act as an AX.25/IP router. Status Development, not yet released. System requirements. As for any Linux system a 386SX class PC or better. Detail No detail yet. Where and How to obtain it. Not yet available. Licensing/Copyright Unknown/Undecided. 5.8. TNT. Author Mark Wahl, DL4YBG, DL4YBG @ DB0BLO.#.DEU.EU, wahlm@zelator.de Description A Hostmode terminal program for TNC's that support the WA8DED hostmode protocol. Status Version 0.8 is reportedly stable. System requirements TNC supporting WA8DED hostmode protocol, serial line. Detail TNT is a full featured hostmode terminal program. Compiling it on Linux is as difficult as untarring the source and typing `make'. It provides both a `dumb' terminal and X11 version. It comes with some comprehensive documentation which describes its features in some detail. Its main features are: Multiple sessions: TNT supports multiple packet radio connections on virtual screens that you can switch between. Each session window provides split screen (seperate transmit and receive text) operation with a status line. Commands can be entered in either a command session, or in any terminal session using a command key. Each of the virtual screens can be larger than the physical screen and can be scrolled around. Data capture, file transfer and logging: A number of options are available for logging received text to files. You can log transmit, receive or both to a log file. You can overwrite or append received data to existing files. You can use the `autobin' protocol to transmit or receive binary files. Remote Shell operation: You can provide a shell to remote users so that they can access other programs on your computer. You can also run a program and direct its input/output to a channel so that users can use it. Redirection of devices to a channel: TNT allows you to redirect input/output from a channel to a device, a modem for example. Umlaut conversion: TNT provides umlaut conversion if necessary. Remote mode: Remote users can issue command themselves if allowed to do so. Socket mode: You can configure tnt so that it opens a socket for users to telnet to that allows them operation just as you have from the console. This is useful where your linux machine is on an ethernet and you want other terminal on the net to have use of your radio. Where and How to obtain it. The software is available by anonymous ftp from: ftp.funet.fi <ftp://ftp.funet.fi/pub/ham/unix/packet/tntsrc09.tgz>. This site is mirrored at a number of places so you will probably find it at other places as well. Licensing/Copyright GNU Public License. Freely redistributable, no warranty. Contributed by: Steffen Weinreich, DL5ZBG. 5.9. IPIP encapsulation daemon. Name Mike Westerhof's IPIP encapsulation daemon. Author Mike Westerhof KA9WSB (original code), then Bdale Garbee N3EUA (port to BSD), then Ron Atkinson N8FOW and John Paul Morrison (port to Linux), then Bdale rolled it all back together again. Description A daemon that will allow you to use your linux machine as an IPIP encapsulating gateway. Status Ron is running this code himself, and the other version have been run quite successfully. System requirements KISS TNC, any version of Linux supporting RAW sockets. Detail If you've ever used an internet gateway from your amateur packet radio you have probably been connected by an encapsulation gateway of some descpription. Most run KA9Q's NOS and DOS, but others run Unix and this daemon. It allows you to encapsulate IP within IP, so that you can 'tunnel' IP connections over the Internet. The software allows you to connect a KISS TNC to your linux machine and to have all datagrams received on it carried across the Internet to a similar gateway. Bdale has installation instructions in the package. Where and How to obtain it. This software is available from the col.hp.com <ftp:///col.hp.com/hamradio/packet/etc/ipip/ipip.tar.gz> ftp site. Licensing/Copyright etc. Freely distributable, though Bdale asks that if you use the code and like it you might send him a QSL card or a postcard. Contributed by: Ron Atkinson, N8FOW, and Bdale Garbee, N3EUA 5.10. AXIP encapsulation daemon. Name Mike Westerhof's AXIP encapsulation daemon. Author Mike Westerhof KA9WSB, ported to Linux by Ron Atkinson N8FOW. Description A daemon that will allow you to use your linux machine as an AXIP encapsul ating gateway. Status Not properly tested, but assumed to work ok. System requirements KISS TNC, any version of Linux supporting RAW sockets. Detail This daemon is the partner to the IPIP encapsulation daemon. It allows you to encapsulate AX.25 frames in IP to carry them across the Internet. This is useful for linking AX.25 networks in remote areas. Ron has supplied a Makefile for linux, and with it the software compiled without errors on my system running a recent version kernel. Ron has also written some README files which give you the detail necessary to compile the system and the original documentation describes how to configure it. Where and How to obtain it. This software is available in the sunsite.unc.edu ham apps directory <ftp://sunsite.unc.edu/pub/Linux/apps/ham/ax25ip.tar.gz>. Licensing/Copyright etc. Freely distributable so long as the original copyright notice is not removed. Contributed by: Ron Atkinson, N8FOW 5.11. Ping-Pong Convers Server Name Fred Baumgartens Convers Server for Linux. Author Fred Baumgarten, DC6IQ, <dc6iq@insu1.etec.uni-karlsruhe.de> Description This is a version of the convers server that allows multiple users to simultaneously chat with each other in a round-table style conversation. It is compatible with the NOS convers servers, but provides extra facilities such as saving/restoring of Personal Text and Chanel Topics. Status In use of a number of popular convers servers, appears very stable. System requirements. Linux, GNU make, C compiler. Detail. Complete installation instructions are included in the INSTALL file that is included in the distribution. Where and How to obtain it. A distribution of this software is available at sunsite.unc.edu <ftp://sunsite.unc.edu/pub/Linux/apps/ham/convers/>. The home of the software is at insu1.etec.uni-karlsruhe.de ftp server <ftp://insu1.etec.uni-karlsruhe.de/pub/hamradio/convers/convers> Licensing/Copyright etc. Presumably copyright Fred Baumgarten (not specifically stated), but some portions appear to be free for non-commercial use and copying provided the copyright notices stay intact. 5.12. AX.25 digipeater for Linux Name axdigi Author Craig Small vk2xlz <csmall@acacia.itd.uts.edu.au> Description Allows Linux to digipeat across different ax.25 ports Status Beta release System requirements Requires Alan Cox AX.25 kernel support Detail. Allows frames to come in one port and out another using normal ax.25 digipeater methods. Changes the digipeater callsign to the correct one for the correct return port. Where and How to obtain it. sunsite.unc.edu <ftp://sunsite.unc.edu/pub/Linux/apps/ham/axdigi.tgz> ftp.ucsd.edu <ftp://ftp.ucsd.edu/hamradio/packet/tcpip/linux/axdigi.tgz> Licensing/Copyright etc. GNU GPL Contributed by: Craig Small vk2xlz <csmall@acacia.itd.uts.edu.au> 5.13. Gracilis PacketTwin kernel driver Name Gracilis PacketTwin kernel driver Author Craig Small vk2xlz <csmall@acacia.itd.uts.edu.au> Description Device driver for Gracilis PackeTwin cards. Status Alpha - needs testing and bug reports. System requirements. Gracilis PackeTwin card, Linux AX.25 kernel software. Detail. Provides kernel based driver support for the Gracilis PackeTwin card using the kernel AX.25 code. Where and How to obtain it. The current version can be obtained from sunsite.unc.edu <ftp://sunsite.unc.edu/pub/Linux/apps/ham/pt-driver-0.04.tgz> Licensing/Copyright etc. GNU GPL. Contributed by: Craig Small vk2xlz <csmall@acacia.itd.uts.edu.au> 5.14. RSPF Daemon Name RSPF - Radio Shortest Path First routing daemon for Linux Author Craig Small vk2xlz <csmall@acacia.itd.uts.edu.au> Description An implementation of the Radio Shortest path First routing protocol for linux. The daemon supports version 2.2 of the protocol which corrects a lot of bugs and problems that were present in version 2.1. Status Alpha - running, needs testing and bug reports. Current version is 0.05 System requirements. Requires Alan Cox's kernel based AX.25 code. Detail This program will allow Linux to become an RSPF router. It addresses some of the quirks of RSPF v2.1, the version in NOS which means that it is incompatible with the NOS version. It will also allows remote/local queries via a tcp session for debugging and diagnostic purposes. Where and How to obtain it. Current versions are always available from sunsite.unc.edu <ftp://sunsite.unc.edu/pub/Linux/apps/ham/> or from the author. Licensing/Copyright Will be covered by the GPL when formally released. Contributed by: Craig Small vk2xlz <csmall@acacia.itd.uts.edu.au> 5.15. Z8530 SCC driver. Name generic Z8530 SCC device driver. Author Joerg Reuter, <DL1BKE@melaten.ihf.rwth-aachen.de> Description A device driver to allow you to use a range of 8530 based SCC cards under Linux. Status stable System requirements. a modern Linux kernel Detail The Zilog Z8530 SCC provides Synchronous/Asynchronous, HDLC, NRZI encoding and other capabilities. There are a number of peripheral cards that use the Z850 as the basis of their design. The driver is generic enough to be pushed into service for just about any sort of 8530 card. The README file that comes with the package provides detail on installation and configuration. Where and How to obtain it: The driver can be obtained from: ftp.ucsd.edu <ftp://ftp.ucsd.edu/hamradio/packet/tcpip/incoming/z8530drv-1.8.dl1bke.tar.gz> for kernel versions older than 1.3.*. Kernel version 1.3.* supports the driver in the standard distribution. Licensing/Copyright GNU Public License. 5.16. Multidrop kiss program. Name mkiss Author Kevin Uhlir, <kevinu@cricket.vware.mn.org> Description a program that will allow you to make use of the feature of multidrop kiss mode tncs. Status stable, released. System requirements. A modern linux kernel and AX.25 kernel support. Detail The existing KISS support in the linux kernel is designed for simple single channel KISS TNC's. A number of TNC's support what is called multidrop mode where a single TNC may support a number of modems, each being controllable via an individual KISS port across the same serial interface. Kevin has overcome the lack of multidrop support by writing a program that takes two seperate kiss feeds from the kernel and combining them into a single multidrop feed which it passes to the tnc. The reverse process also takes place where it splits the single multidrop feed into the appropriate individuals feeds. Instructions on how to compile, install and use the software come in the package. Where and How to obtain it: The program is available from sunsite.unc.edu <ftp://sunsite.unc.edu/pub/Linux/apps/ham/mkiss-1.0.tgz>. Licensing/Copyright GNU GPL Contributed by: Kevin Uhlir, <kevinu@cricket.vware.mn.org> 6. Morse Code Software for use in conjunction with, or for facilitating Morse communication. 6.1. GW4PTS Morse trainer. Author Alan Cox, GW4PTS, iialan@iifeak.swan.ac.uk Description A Morse Code trainer that uses the PC internal speaker Status stable, works quite well, unfinished. System requirements Linux, any version Detail Alan wrote this small program in only an hour. It is quite neat, and allows you to play morse at a range of speeds and frequencies through the PC internal speaker. You can specify the text to be played either from the command line, from a file, or the program is capable of generating random character groups. As it stands you must invoke the program from a Linux Virtual Console, as it relies on certain kernel calls to produce the sound, and these don't work as easily from an XTerm. As it sounds each character it lists the character in verbal form (Di, Dit, Dah etc.) to the screen. Alan is hoping that someone will take the code and enhance it with the features he has listed in the comments at the head of the source file. Where and How to obtain it. I've had a large number of responses from people seeking this code, so I've obtained Alan's permission to make it available. You can obtain it from sunsite.unc.edu <ftp://sunsite.unc.edu/pub/Linux/apps/ham/GW4PTS.morse.tar.gz>. Copyright/Licensing GNU Public License 2, freely redistributable, no warranty. 6.2. morse (aka superiormorse) Author Joe Dellinger, Hawaii Institute of Geophysics, University of Hawaii at Manoa, joe@sep.stanford.edu, jdellinger@trc.amoco.com, joe@soest.hawaii.edu Description A morse-code practice program for UNIX workstations. Status Quite stable System Requirements Currently supports X11, Sun4, HP, Indigo, and Linux Detail Lots of features and options. Includes a utility for generating random content QSOs, similar to those used in the FCC exams. Where and How to obtain it: morse can be obtained from: sepftp.standford.edu <ftp://sepftp.stanford.edu/pub/UNIX_utils/morse/morse.tar.gz>. Licensing/Copyright Freely Redistributable Contributed by: Brian Suggs, AC6GV, and John Gotts, jgotts@engin.umich.edu 7. AMTOR Software. Software for use in conjunction with, or for facilitating AMTOR. 8. PACTOR Software. Software for use in conjunction with, or for facilitating PACTOR. 9. Slow Scan Television Software. Software for use in conjunction with, or for facilitating Slow Scan Television. 10. Facsimile Software. Software for use in conjunction with, or for facilitating Facsimile. 11. Design and Construction Software. Software to assist in the design and construction of amateur radio related things. Antenna, Circuit Board, Filter, and QSL card design packages are all good candidates for this section. 11.1. Software Oscilloscope Author Jeff Tranter, Jeff_Tranter@Mitel.COM Description Scope is a simple software emulation of an oscilloscope. It graphically displays voltage as a function of time. Status ALPHA. First release. System requirements Sound card with input capability supported by the kernel sound driver. SVGALIB is used to do the display work. Detail Scope uses the /dev/dsp device to take audio in from the soundcard and displays it on the screen in a manner similar to an oscilloscope. Jeff claims Scope was written more for amusement value than for any serious purpose. Where and How to obtain it. You can obtain source, makefile and man page for Scope from: sunsite.unc.edu <ftp://sunsite.unc.edu/pub/Linux/apps/circuits/scope-0.1.tar.gz> Licensing/Copyright GNU Public License, Freely redistributable, No warranty. 11.2. Printed Circuit Board design tool. Author Thomas Nau, <Thomas.Nau@rz.uni-ulm.de> Description An X11 based interactive printed circuit board design tool. Status Vers 1.3, stable. System requirements X11 Windowing system and a recent flex program. Detail The pcb package comes with good instructions on how to compile and install the software. I compiled it without error under X11R6. It comes with package layouts for a range of popular components and the example layout nicely demonstrates the capabilities of the package. Where and How to obtain it. You can obtain the pcb package from: sunsite.unc.edu <ftp://sunsite.unc.edu/pub/Linux/apps/circuits/pcb-1.3.tar.gz> or from: ftp.medizin.uni-ulm.de <ftp://ftp.medizin.uni- ulm.de/pub/pcb-1.3/pcb-1.3.tar.gz> Licensing/Copyright GNU Public License 11.3. Chipmunk circuit design and simulation tool Author Dave Gillespie <daveg@synaptics.com> and John Lazzaro <lazzaro@cs.berkeley.edu> Description Schematic Entry and Digital or Analog Simulation. Status vers 5.10, stable. System requirements X11 windowing system and older (XFree86-2.x) libs, 8 bpp (256 color) only Detail I haven't tried this one out yet. Where and How to obtain it. You can obtain the Chipmunk package from: sunsite.unc.edu <ftp://sunsite.unc.edu/pub/Linux/apps/circuits>or ifi.uio.no <ftp://ifi.uio.no/pub/>. Licensing/Copyright Modified GNU Public License, Caltech specifically disclaimed from liability. 11.4. irsim Author Dmitry Teytelman, dim@leland.stanford.edu Description An event-driven logic-level simulator for MOS circuits Status Version 9.2, production. System Requirements X-Windows. Detail irsim is an X11 based simulator for MOS circuits. It has two simulation modes, either switch where each transistor is modelled as a voltage controlled switch, or linear where each transistor is modelled as a resistor in series with a voltage controlled switch, and each node has a capacitance. Where and How to obtain it. You can obtain irsim from: sunsite.unc.edu <ftp://sunsite.unc.edu/pub/Linux/apps/circuits/irsim-9.2.linux.1.tar.gz>. Licensing/Copyright Freely Redistributable 11.5. Spice vers. 3f4 Author University of California, Berkeley, port by Jeff@RyeHam.EE.Ryerson.Ca Description Spice is an analog circuit emulator. Status Stable release. System requirements Unknown. Detail Spice allows you to design and test circuits in a computer modelled environment to see how they will behave without having to touch a soldering iron, or solder. A readme file comes with the package. To install I did the following: # cd /usr/src # gzip -dc spice3f4.tar.gz | tar xvf - # cd spice3f4 # ./utils/build linux # ./utils/build linux install Where and How to obtain it. You can obtain version 3f4 of Spice from: sunsite.unc.edu <ftp://sunsite.unc.edu/pub/Linux/apps/circuits/spice3f4.tar.gz> Licensing/Copyright Copyright held by University California, Berkeley. Freely redistributable provided you are not unfriendly to the U.S. 11.6. svgafft - Spectrum analyser Author Andrew Veliath, drewvel@ayrton.eideti.com Description svgafft is a spectrum analyser for Linux. Status Alpha software, but usable. System requirements F77, Linux supported sound card, svgalib, a 486DX33 or better. Detail svgafft uses the /dev/dsp device and currently supports 16-bit and 8-bit sample resolution on supported Linux soundcards. It's display is something akin to a high-end spectrum analyzer with falling peaks. Where and How to obtain it: You can find the software at sunsite.unc.edu <ftp://sunsite.unc.edu/pub/Linux/apps/sound/svgafft-0.2c.tar.gz>. Licensing/Copyright GNU Public License. 11.7. Audio Spectrum Analyser Author Philip VanBaren, phillipv@eecs.umich.edu Description An audio spectrum analyser for Linux SVGALIB or X-Windows. Status Alpha but usable System requirements Linux supported sound card, svgalib or X-Windows. Detail freq5a1 uses the /dev/dsp device, samples the incoming audio, performs a fast fourier transform on the data and displays the output in either 640x480 VGA or an X-Window. Where and How to obtain it: You can obtain freq5a1.tar.gz from: sunsite.unc.edu <ftp://sunsite.unc.edu/pub/Linux/apps/sound/freq5a1.tar.gz> or by mail from the author. Licensing/Copyright GNU Public License vers 2.0. 12. Training/Educational Software. Software to assist in education or training for amateur radio. Morse Code tutorials, technical examination database, Computer Based Training software, and the like are listed here. 13. Miscellaneous Software. Software that didn't neatly fit into any other category. 13.1. Linux for HAMS CD-ROM Author Bruce Perens, bruce@pixar.com Description A complete linux distribution on CDROM specifically designed for Amateur Radio operators. Status Not yet available. System requirements. Linux compatible hardware, some software will obviously require specialised hardware to operate. No additional software should be required. Detail A complete Linux distribution specifically catering for Amateur Radio operators. It will include a fully featured Linux installationplus a range of amateur radio specific software such as those listed in this document. Bruce has detail and updated status report available at the LinuxForHams WWW page <http://www.rahul.net/perens/LinuxForHams>. Where and how to obtain it: It isn't yet available, details will be made available when it is released. Licensing/Copyright GNU Public License. Contributed by: Bruce Perens, bruce@pixar.com 13.2. SunClock Author John Mackin, john@cs.su.oz.AU Description A clock that will show you instantly what parts of the globe are exposed by sunlight and what parts aren't. Status Released. System requirements. X-Windows. Detail sunclock is another of those desktop gadgets that most people think look nice but really don't have a lot of use for. I use sunclock to obtain an at-a-glance indication of the time anywhere in the world. In its iconic form it sits in a small Mercator projection. When maximised it produces the same image but obviously larger with slightly more detail. It also displays the date, local time and UTC. sunclock actually calculates mathematically what parts of globe are sunlit and which aren't, it seems quite accurate, so long as you assume the earth has no atmosphere. Where and How to obtain it. I haven't seen any precompiled sunclock binaries for Linux about, so check your nearest archie server. sunclock compiled straight out of the box for me. Licensing/Copyright Public Domain and may be freely copied as long as the notices at the top of sunclock.c remain intact. 13.3. Xearth Author Kirk Johnson, <tuna@cag.lcs.mit.edu> Description A rotating earth for X-windows root window. It has real life shading, and options for geostatic view, and non geostatic view. A prettier and more modern version of sunclock but requires a bit more processing power. Status Version 1.0. System requirements. X-Windows. Detail xearth is a sophisticated program which draws a colour picture of the earth onto your X Windows display. It offers either an orthographic view as you would see from space or the map like mercator projection. You have a number of options in determining the behaviour of the view. The details are available from the xearth Home Page <http://cag-www.lcs.mit.edu/~tuna/xearth/> and in the documentation which is supplied with the package. Where and How to obtain it. The source can be obtained from its home site at cag.lcs.mit.edu <ftp://cag.lcs.mit.edu/pub/tuna/> or just about any X11/contrib directory. Licensing/Copyright Copyright (C) 1989, 1990, 1993 by Kirk Lauritz Johnson. The copyright notice included states that xearth is freely redistributable so long as the copyright notice is left intact, and be included in documentation. Contributed by: Kirk Johnson" <tuna@kanchenjunga.lcs.mit.edu> 14. Installation, Configuration, Hints and Tricks. This section provides some detail on how to actually install and use some of the listed software. It will also detail some solutions to some tricky problems that you might encounter with the software. 14.1. AX.25/NetRom - Packet Radio protocol software. The AX.25 protocol offers both connected and connectionless modes of operation, and is used either by itself for point-point links, or to carry other protocols such as tcp/ip and netrom. It is similar to X.25 level 2 in structure, with some extensions to make it more useful in the amateur radio environment. The NetRom protocol is an attempt at a full network protocol and uses AX.25 at its lowest layer as a datalink protocol. It provides a network layer that is an adapted form of AX.25. Alan Cox developed some early kernel based AX.25 software support for Linux. Jonathon Naylor <g4klx@g4klx.demon.co.uk> has taken up ongoing development of the code, has added NetRom support and this is available in ALPHA form for you to experiment with. The Linux code supports KISS based TNC's (Terminal Node Controllers), the Ottawa PI card and the Z8530 SCC driver. Any bug reports relating to the AX.25 or Netrom software should now go to Jonathon. The User programs contain a simple PMS (Personal Message System), a beacon facility, a line mode connect program, `listen' an example of how to capture all AX.25 frames at raw interface level and programs to configure the Netrom protocol. Included also are an AX.25 server style program to handle and despatch incoming AX.25 connections and a NetRom daemon which does most of the hard work for NetRom support. 14.1.1. Where to obtain the AX.25/Netrom software. The AX.25 software is comprised of two components, the kernel source and the utility programs. As of the version 1.3.* release of Linux kernel source the AX.25, Netrom, Z8530 SCC and PI card drivers are all included as a standard. I recommend you obtain and use the version 1.3.* kernel source. There are three reasons I'm recommending you use the alpha version software and they are: o it makes the process of building and configuring the software a whole lot simpler. There are no patches to apply it is a simple matter of configuring and compiling a kernel with the appropriate options enabled. o it is the most recent software and is most likely to provide the most satisfactory results. o like all new software, it needs testing and bug reports. The more people that take the software and attempt to use it in their own configurations the more likely it will be that bugs are uncovered and the easier it will be to get the software debugged. Join the team, contribute bug reports and help everybody. Be warned though, this software is alpha and may have problem that you wouldn't otherwise encounter. Please take all the usual precautions and be sure to keep a working kernel as backup when testing new kernels. It is wise to test a new kernel by booting from it from floppy before actually installing it with lilo, though I haven't bothered for about 90 kernels revisions so I'm fairly confident you can pretty safely run with alpha kernels. You can obtain the latest kernel source from: ftp.funet.fi /pub/OS/Linux/PEOPLE/Linus/v1.3/ You will also need the utility programs. The latest version of those can be found at: sunsite.unc.edu /pub/Linux/apps/ham/ax25-utils-1.3.30.tar.gz or: ftp.ucsd.edu /hamradio/packet/tcpip/incoming/ax25-utils-1.3.30.tar.gz 14.1.2. Installing the AX.25 software. The software comes in two parts, the kernel source, and the user programs. 14.1.2.1. The kernel source. If you are using the 1.3.* kernel source then all you have to do is build the kernel as you would normally. The following should be safe: # cd /usr/src/linux # make config # make dep;make o Be sure to answer `yes' when you are asked if you should include the AX.25 support in the make config step. o You will also need to answer `y' to including SLIP if you want the AX.25 code to support a KISS TNC or if you intend running a version of NOS on your system and you wish to be able to link it with the rest of your system. o You will be asked if you wish to include the Z8530 driver. o If you wish to support the Ottawa PI driver then you must answer `y' when asked: Do you want to be offered ALPHA test drivers ? and: Other ISA cards ? then `y' when prompted: Ottawa PI and PI/2 support. 14.1.2.2. The user programs. To install the user programs you should try: # cd /usr/local # gzip -dc ax25-utils-1.3.30.tar.gz | tar xvvof - # cd ax25-utils-1.3.30 ... if you are using a.out binaries: # install.sh a.out ... if you want to install ELF binaries: # install.sh ELF If you want to compile your own binaries then you should do the following: # cd src # make clean # make install 14.1.3. Configuring an AX.25 connected mode interface. Configuring an AX.25 port is very similar to configuring a slip device. The AX.25 software has been designed to work with a TNC in kiss mode or an Ottawa PI2 card. You will need to have the TNC preconfigured and connected to your serial port. You can use a comms program like minicom or seyon to configure the TNC into kiss mode if you wish. You use the axattach program in much the same way as you would use the slattach program (refer to the NET-2-HOWTO for more information on slattach and the other network software for Linux). For example: # /usr/local/sbin/axattach -s 4800 /dev/ttyS1 VK2KTJ-1 & # sleep 2 would configure your /dev/ttyS1 serial device to be a kiss interface at 4800 bps, with the hardware address VK2KTJ. The sleep of 2 seconds is necessary just to give the kernel a little time to do some housekeeping that it has to do before you try and change the interface. You can use the axsetcall command to change the callsign of an AX.25 interface after it has been created if you wish. All this step has done is to actually activate the device in the kernel, you need to run other programs before you an actually make use of the port. The AX.25 ports have a configuration file that can be read by any program that wants to use AX.25 to find information about the port. This file is called the: /usr/local/etc/axports file. The format of the file is as follows: callsign baudrate window label where: callsign is the AX.25 callsign you want to assign to the port. baudrate is the speed at which you wish the port to communicate with your TNC. window is the AX.25 window (K) parameter. This is the same as the MAXFRAME setting of many tnc's. label is a name for the port. In my case, mine looks like: VK2KTJ-1 4800 1 radio At this stage not all of this information is used, it will be picked up and used in later developments. You now should be able to make outgoing AX.25 connections. To test AX.25 connected mode you could use something similar to the following: /usr/local/bin/call VK2DAY via VK2RVT The call program is a linemode terminal program for making AX.25 calls. It recognises lines that start with ` ' as command lines. The ` .' command will close the connection. Please refer to the man pages in /usr/local/man and the README file in ax25-utils-1.3.30 distribution for more information. 14.1.4. Configuring Linux to accept Incoming AX.25 connections. Linux is a powerful operating system and offers a great deal of flexibility in how it is configured. With this flexibility comes a cost in configuring it to do what you want. When configuring your Linux machine to accept incoming AX.25 connections there are a number of questions you need to ask yourself. The most important of which is: "What do I want users to see when they connect?". As detailed in the software list at the start of this document there are BBS systems that are being developed that you might want users to see when they connect, alternatively you might want to give users a login prompt so that they can make use of a shell account, or you might even have written your own program, such as a customised database or a game, that you want people to connect to. Whatever you choose, you must tell the AX.25 software about this so that it knows what software to run when it accepts an incoming AX.25 connection. You do this within the /usr/local/etc/ax25d.conf. This file is the configuration file for the ax25d AX.25 daemon which handles incoming AX.25 connections. The file is a little cryptic looking at first, but you'll soon discover it is very simple in practise, with a small trap for you to be wary of. The format of the ax25d.conf file is as follows: # This is a comment and is ignored by the ax25d program. [<interface_call>] <peer1> window T1 T2 T3 N2 <mode> <uid> <cmd> <cmd-name> <arguments> <peer2> window T1 T2 T3 N2 <mode> <uid> <cmd> <cmd-name> <arguments> defaults window T1 T2 T3 N2 <mode> <uid> <cmd> <cmd-name> <arguments> <peer3> window T1 T2 T3 N2 <mode> <uid> <cmd> <cmd-name> <arguments> default window T1 T2 T3 N2 <mode> <uid> <cmd> <cmd-name> <arguments> Where: # at the start of a line marks a commment and is completely ignored by the ax25d program. <interface_call> is the AX.25 callsign of the interface that this particular paragraph is for. <peer> is the callsign of the peer node that this particular configuration applies to. If you don't specify an SSID here then any SSID will match. window is the AX.25 Windows parameter (K) or MAXFRAME parameter for this configuration. T1 is the Frame retransmission (T1) timer in half second units. T2 is the amount of time the AX.25 software will wait for another incoming frame before preparing a response in 1 second units. T3 is the amount of time of inactivity before the AX.25 software will disconnect the session in 1 second units. N2 is the number of consecutive retransmissions that will occur before the connection is closed. <mode> provides a mechanism for determining certain types of general permissions. The modes are enabled or disabled by setting or resetting bits in an 8 bit map. You set that map by setting <mode> to the sum of the following values: 1 Setup utmp, and run on a ptty (planned). 2 UNUSED. 4 UNUSED. 8 UNUSED. 16 UNUSED. 32 UNUSED. 64 Disallow digipeated uplinks, only allow direct connections. 128 Lockout, Barred, immediate disconnect. <uid> is the userid that the program to be run to support the connection should be run as. <cmd> is the full pathname of the command to be run, with no arguments specified. <cmd-name> is the text that should appear in a ps as the command name running (normally the same as <cmd> except without the directory path information. <arguments> are the command line argument to be passed to the <:cmd> when it is run. You pass useful information into these arguments by use of the following tokens: %U AX.25 callsign of the connected party without the SSID, in uppercase. %u AX.25 callsign of the connected party without the SSID, in lowercase. %S AX.25 callsign of the connected party with the SSID, in uppercase. %s AX.25 callsign of the connected party with the SSID, in lowercase. You need one section in the above format for each AX.25 interface you want to accept incoming AX.25 connections on. There are two special lines in the paragraph, one starts with the string `defaults' and other starts with the string `default' (yes there is a difference). These lines serve special functions. The `default' lines purpose should be obvious, this line acts as a catch-all, so that any incoming connection on the <interface_call> interface that doesn't have a specific rule will match the `default' rule. If you don't have a `default' rule, then any connections not matching any specific rule will be disconnected immediately without notice. The `defaults' line is a little more subtle, and here is the trap I mentioned earlier. In any of the fields for any definition for a peer you can use the `*' character to say `use the default value'. The `default' line is what sets those default values. The kernel software itself has some defaults which will be used if you don't specify any. The trap is that the these defaults apply only to those rules below the `default' line not to those above. You may have more than one `default' rule per interface definition, and in this way you may create groups of default configurations. Ok, an illustrative example: # ax25d.conf for VK2KTJ - 21/11/95 # This configuration uses the AX.25 port defined earlier. [VK2KTJ-1] NOCALL * * * * * 0 guest /usr/games/fortune defaults 1 10 * * * 0 root /bin/login ax25login VK2XLZ-1 * * * * * * * * * VK2DAY-1 * * * * * * * * * default 1 10 5 100 5 0 root /usr/local/bin/bbs bbs %u # This example says that anybody to the interface on my machine with the callsign VK2KTJ-1 will have the following rules applied: Anyone whose callsign is set to `NOCALL' should use the kernel default parameters and have the fortune program run as guest for them. The defaults line changes two parameters from the kernel defaults (Window and T1) and will run the /bin/login login program for them. Any copies of login run this way will appear as ax25login in a ps listing so that you can easily distinguish AX.25 logins from others. Following are definitions for two stations who will receive those permissions. The last line in the paragraph is the catch all definition that everybody else will get (including VK2XLZ and VK2DAY using any other SSID other than -1). This definition sets all of the parameters implicitly and will cause the bbs program to run with a command line argument of the callsign of the connecting peer in lower case with no SSID. If you wanted to define rules for another interface, even a Netrom interface, then you would add another paragraph coded in the same way with rules and callsign appropriate to it. This example is a contrived one but I think it illustrates clearly the important features of the syntax of the configuration file. Jonathon includes a much longer and more detailed example in the ax25-utils package. 14.1.5. Configuring an AX.25 interface for tcp/ip. If you want to carry tcp/ip over the AX.25 port you have configured, all you need to do is use the ifconfig program to configure the ip address and netmask details for the port and add a route via the port. # /sbin/ifconfig sl0 44.136.8.5 # /sbin/ifconfig sl0 netmask 255.255.255.0 # /sbin/ifconfig sl0 broadcast 44.136.8.255 # /sbin/ifconfig sl0 arp mtu 256 up # /sbin/route add -net 44.136.8.0 sl0 # /sbin/route add default sl0 The commands listed above are typical of the sort of configuration many of you would be familiar with if you have used NOS or any of its derivatives or any other tcp/ip software. Note the default route might not be required if you have some other network device conifgured. To test it out, try a ping or a telnet to a local host. 14.1.6. Configuring an AX.25 interface for Netrom. To configure Netrom for an AX.25 interface you must configure two files. The first is the /usr/local/etc/nrports file. This file describes the Netrom port. This file is formatted as follows: callsign alias description Where: callsign is the callsign that the Netrom traffic from this port will use. alias is the Netrom alias this port will have assigned to it. description is a free text description of the port. An example would look something like the following: VK2KTJ MTCOLAH Netrom Switch Port Note again that the first line refers to the first Netrom interface, the second line refers to the second Netrom interface and so on. The second file is the /usr/local/etc/nrbroadcast file. This file is formatted as follows: port min_obs def_qual worst_qual verbose Where: port is the port number obtained from the /usr/local/etc/axports file. The first line in the file describes AX.25 port number one, the second describes port number two etc. If you do not have an entry in /usr/local/etc/nrbroadcasts for a port then this means that no Netrom routing will occur and any received Netrom broadcasts will be ignored for that port. min_obs is the minimum obselesence value for the port. def_qual is the default quality for the port. worst_qual is the worst quality value for the port, any routes under this quality will be ignored. verbose is a flag determining whether full Netrom routing broadcasts will occur from this port or only a routing broadcast advertising the node itself. An example would look something like the following: 1 1 200 10 1 2 1 200 10 1 14.2. Ottawa PI/PI2 card driver. The Ottawa PI card is a Z8530 SCC based card for IBM PC type machines that is in common usage by Amateur Radio operators worldwide. While it is most commonly used by Amateur Radio Operators, it could be pressed into service in other fields where it is desirable to have the features of a Z8530. It supports a high speed half duplex (single DMA channel) port, and a low speed (<9k6bps interrupt driven) half duplex port. The PI2 is a new version of the card that supports an on board radio modem, and improved hardware design. A driver for this card has been written by David Perry, <dp@hydra.carleton.edu>, and is available from in the standard linux kernel. Please refer to the AX.25 section above for details on how to configure the kernel to include the PI card driver. Once you have the PI card driver configured into your kernel then you should reboot and when you do you should see mention of the PI card driver in the messages that appear on the screen while the kernel is booting. The kernel tests each of the I/O port addresses that a PI card might be configured for and reports any that it finds. You should then look at the /proc/net/dev file and you should see reference to devices called pi0a and pi0b etc. If you don't then recheck that you have configured and compiled your kernel correctly and that you are in fact actually running your new kernel. If you still don't then this suggests that your PI card was not detected by the kernel while it is booting and may indicate that you have some sort of hardware conflicting with your PI card that prevented it being detected. If all of the above went as planned then you will need to configure your PI card for IP. The configuration of the PI card is virutally identical to that of any other IP interface. Something like the following should work ok for you: # /sbin/ifconfig pi0a 44.136.8.5 # /sbin/ifconfig pi0a netmask 255.255.255.0 # /sbin/ifconfig pi0a broadcast 44.136.8.255 # /sbin/ifconfig pia arp mtu 256 up # /sbin/route add -net 44.136.8.0 pi0a # /sbin/route add default pi0a Note that pi0a refers to the `a' port on the first PI card found, and that pi0b would therefore refer to the `b' port on the first PI card found etc. As usual, when this has been done you can test the interface with the ping or telnet command to ensure it is working. 14.3. HOWTO link NOS and the Linux kernel networking software Many people like to run some version of NOS under Linux because it has all of the features and facilities they are used to. Most of those people would also like to have the NOS running on their machine capable of talking to the Linux kernel so that they can offer some of the linux capabilities to radio users. Brandon S. Allbery, KF8NH, contributed information to explain how to achieve this. Since both Linux and NOS support the slip protocol it is possible to link the two together by creating a slip link. You could do this by using two serial ports with a loopback cable between them, but this would be slow and costly. Linux provides a feature that many other unix-like operating systems provide called `pipes'. These are special pseudo devices that look like a standard tty device to software but in fact loopback to another pipe device. To use these pipes the first program must open the master end of the pipe, and the open then the second program can open the slave end of the pipe. When both ends are open the programs can communicate with each other simply by writing characters to the pipes in the way they would if they were terminal devices. To use this feature to connect the Linux Kernel and a copy of NOS, or some other program you first must chosoe a pipe device to use. You can find one by looking in your /dev directory. The master end of the pipes are named: ptyp[1-f] and the slave end of the pipes are known as: ttyp[1-f]. Remember they come in pairs, so if you select /dev/ptypf as your master end then you must use /dev/ttypf as the slave end. Once you have chosen a pipe device pair to use you should allocate the master end to you linux kernel and the slave end to the NOS program, as the Linux kernel starts first and the master end of the pipe must be opened first. You must also remember that your Linux kernel must have a different IP address to your NOS, so you will need to allocate a unique address for it if you haven't already. You configure the pipe just as if it were a serial device, so to create the slip link from your linux kernel you can use commands similar to the following: # /sbin/slattach -s 38400 -p slip /dev/ptypf & # /sbin/ifconfig sl0 broadcast 44.255.255.255 pointopoint 44.70.248.67 / mtu 1536 44.70.4.88 # /sbin/route add 44.70.248.67 sl0 # /sbin/route add -net 44.0.0.0 gw 44.70.248.67 In this example the Linux kernel has been given IP address 44.70.4.88 and the NOS program is using IP address 44.70.248.67. The route command in the last line simply tells your linux kernel to route all datagrams for the amprnet via the slip link created by the slattach command. Normally you would put these commands into your /etc/rc.d/rc.inet2 file after all your other network configuration is complete so that the slip link is created automatically when you reboot. Note: there is no advantage in using cslip instead of slip as it actually reduces performance because the link is only a virtual one and occurs fast enough that having to compress the headers first takes longer than transmitting the uncompressed datagram. To configure the NOS end of the link you could try the following: # you can call the interface anything you want; I use "linux" for convenience. attach asy ttypf - slip linux 1024 1024 38400 route addprivate 44.70.4.88 linux These commands will create a slip port named `linux' via the slave end of the pipe device pair to your linux kernel, and a route to it to make it work. When you have started NOS you should be able to ping and telnet to your NOS from your Linux machine and vice versa. If not, double check that you have made no mistakes especially that you have the addresses configured properly and have the pipe devices around the right way. 15. How to contribute or update an entry. I'd like for this list to be as complete and up-to-date as possible. So I'm keen to hear about any developments or products that I don't already know about, or that the entry is obselete or outdated for. What I'd like as a minimum set of requirement would be something like the following: Name The name of the software in question. Author Who wrote, or ported the software. An email address, or some other means of contacting them is also essential. Description A single line description of what the software does. Status An indication of the software's status. Is it still in testing? Is it a production release? Is it still in the design stage? System requirements What does the software require to run? Does it require X- Windows? Does it need a soundcard? Does it need a certain version of kernel? Does it need other software to support it? Detail I'm not keen on including a large amount of detail on each piece of software as this would consume a lot of time reading and trying to keep up to date. So instead what I'd like to list is what makes this software unique, anything special about it. Perhaps its most outstanding features, that sort of thing. Where and How to obtain it. If the software is freely distributable then ftp details would be great. If it is commercial software then the name of the company distributing the software, and an address or telephone number. If it is available only by some other means, say mail order, then details on where and how to obtain it. Licensing/Copyright Is the software Copyleft? Copyright? Shareware? Public Domain? Restricted in use in any way? Don't worry if you don't know all of these details, just send me what you do know and I'll list what I can. I'd rather have an incomplete listing than no listing at all. Please mail any contributions to: 94004531@postoffice.csu.edu.au or terry@perf.no.itg.telecom.com.au I'd list a packet radio address too but I'm still not properly operational again yet after moving house. 16. Discussion relating to Amateur Radio and Linux. There are various places that discussion relating to Amateur Radio and Linux take place. They take place in the comp.os.linux.* newsgroups, they also take place on the HAMS list on vger.rutgers.edu. Other places where they are held include the tcp-group mailing list at ucsd.edu (the home of amateur radio tcp/ip discussions), and you might also try the #linpeople channel on the undernet irc network. To join the Linux linux-hams channel on the mail list server, send mail to: Majordomo@vger.rutgers.edu with the line: subscribe linux-hams in the message body. The subject line is ignored. To join the tcp-group send mail to: listserver@ucsd.edu with the line: subscribe tcp-group in the body of the text. Note: Please remember that the tcp-group is primarily for discussion of the use of advanced protocols, of which tcp/ip is one, in Amateur Radio. Linux specific questions should not ordinarily go there. 17. Copyright. The HAM-HOWTO is Copyright (c) 1995 Terry Dawson. Permission is granted to make and distribute verbatim copies of this document provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this document under the conditions for verbatim copies above, provided a notice clearly stating that the document is a modified version is also included in the modified document. Permission is granted to copy and distribute translations of this document into another language, under the conditions specified above for modified versions. Permission is granted to convert this document into another media under the conditions specified above for modified versions provided the requirement to acknowledge the source document is fulfilled by inclusion of an obvious reference to the source document in the new media. Where there is any doubt as to what defines 'obvious' the copyright owner reserves the right to decide.