Tech Notes

Sound Card interface notes for digital modes including PSK-31

Where can I buy equipment for building a repeater?

Give eBay a try

Search for some of the more popular radio models that can be duplexed...
    Motorola: Maxtrac, Micor & Mitrek
    General Electric: MVP, Mastr Executive II, Mastr II

Motorola Maxtrac power set mod

Duplexer Tuneup Info...

Motorola T1504A duplexer wiring 

General Electric MVP modifications for repeater service by Bill Putney WB6RFW

   Modifications and tune up instructions

• R100 Programming Cable
• Duplex mods for repeater and link service for a Motorola Mitrek .
• Quick tune-up instructions for a Motorola Mitrek receiver (UHF) .
• Quick tune-up instructions for a Motorola Mitrek transmitter (UHF) .
• Motorola Micor modifications for repeater service by Jim Reese WD5IYT
• Motorola Micor modifications for repeater service by Bruce Perens KD6OTD
• BatWing web site with detailed instructions on the RIB and programming synthesized Motorola radios.

ICOM

W32 crossband repeat, IC-22S 5 Khz mod, CI-V level translator

• Sierra Radio Systems control systems
  
• Standard DB9 radio Interface connector pinout.

 

 

Six element "Cactus Standard" UHF Yagi antenna.
• "Cactus Standard" balun for the six element UHF yagi antenna.

Repeater Builders web site
• WA6TMJ's web site