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- Antenna System Information The antenna system is made up of everything that connects to the antenna connectors of the repeater receiver and transmitter.
- Backup and Alternative Power Equipment modification and setup articles plus reference material.
- Construction Projects Repeater-related construction projects. (Note that there are some homebrew antenna projects at the bottom of the Antenna System Information page above)
- DMR and D-STAR Information on digital communications equipment and operation, including MotoTrbo.
- Downloads Various downloads (software, powerpoint files, data files).
- IRLP The Internet Radio Linking Project is a worldwide community of radio/repeater systems. Here’s an overview page with a lot of links.
- Packet Radio / APRS notes (will open in a new window) Many new users of packet radio – be it for message handling or for APRS were disappointed with the results and gave up. It worked on strong signals, but failed on weaker signals. WA6ILQ fixed the issues that a few local hams in his area had with problems in level, deviation, preemphasis / deemphasis, tone twist, and impedance matching. Rather than rewrite John Ackermann N8URs excellent writeup we’ve just provided a pointer to his page. And Steven Smith WA8LMF has provided a downloadable Packet TNC Test CD Image File that is an excellent test tool (that link will open in a new window).
- Repeater Equipment Suppliers Antennas, Controllers, Duplexers, Feedline, Power Amplifiers, Preamplifiers, Repeaters, Voters, and more.
- Repeater Jamming and how to solve it / deal with it Information on catching indentifying repeater jammers.
- Repeater Linking Information on linking repeaters together.
- Repeater-oriented articles, by Peter Policani, K7PP These articles were published on his own site that has since left the web. Peter gracioiusly gave Repeater-Builder permission to host certain relevant articles here.
- Repeater related groups Links to several groups, mailing lists and email reflectors relating to repeaters.
- Radio Mobile is a free and powerful computer-aided tool that models the coverage of an antenna. It was witten by Roger Coudé VE2DBE. You can use the program by visiting the site and creating a free account. It’s free to amateur radio operators. It is used to plot antenna patterns and to predict the performance of radio systems from 20 MHz to 20 GHz. RM lacks easy to understand documentation. The best place for beginner info is the web site at http://www.g3tvu.co.uk/Radio_Mobile.htm or at http://www.pizon.org/radio-mobile-tutorial (both are offsite links and will open in a new window).
- A Sample Set of Repeater Radio Site Rules Here’s a sample of what to expect when you rent space at a commercial 2-way radio site. Here’s another set from N9ZIA (offsite link). And another one.
- A customizable tower site lease agreement DOC file Here’s a sample tower site lease agreement you can download and fill in with your specific information when you are looking to rent space at a commercial site. Lawyer-approved. Provided by Martin Flynn W2RWJ.
- Amateur Radio Club Repeater Operation Rules Here are some samples from various radio clubs: (several are offsite links)
The Target System WB1GOF Repeater Rules of Conduct K5QHD Repeater Usage Rules and Guidelines Mount Diablo Amateur Radio Club Repeater Operation Rules The Great South Bay Amateur Radio Club of New York Interstate Repeater Society of New Hampshire Repeater Conduct The Caravan Amateur Radio Club of Albuquerque New Mexico Repeater Rules & Etiquette The KB1AEV Repeater System Arlington Radio Public Service Club Rocky Mountain Radio League (near Denver, Colorado) Condor Connection Guidelines from a open linked 220 Mhz system that runs from Phoenix west to San Diego and north into Oregon Private system policies and rules from a now‑defunct linked private system (this is presented here only as a set of ideas that others can borrow from).
- Technical Information Various technical articles and reference material, including a glossary page of terms used around repeaters.
- Test Equipment Manuals (PDFs) and articles for communications test equipment, such as IFR / Aeroflex, Bird, Cushman, Helper, Motorola, and a few others. This page also has some articles on home-brew test equipment.
- The Two-Way Directory Site This web site was run by Rik Rasmussen WA4BAN until mid-2022 when he retired. This directory of the Land Mobile (commercial 2-way radio) industry had over 1600 links plus a interesting commentary page (scroll down to the “Two Way Radio Web Log”).
Note that the pointer is an offsite link to a snapshot page at the Wayback Machine and the information is a little dated but very useful.
- VoIP Information on Voice over Internet Protocol controllers and linking practices.