Back to Home   Construction Projects, Articles and Reference Material
Contributions are ALWAYS welcome

The information presented in this section is copyrighted by repeater‑builder (the authors copyright, if any, supercedes it).
   

There are other good articles on the Technical Info page

Build an Isolated Tee Sampler for a Bird 43 Wattmeter   Build an IsoTee Sampler for the Bird from a blank slug!   By Kevin Custer W3KKC
A Photo Tour of a Bird Wattmeter Element   Ever wonder what's inside one of those elements? Bob took a bad one apart in an attempt to fix it, and took a bunch of photos along the way.   And yes, he fixed it!   By Robert Meister WA1MIK
PL-CG (CTCSS) Filter Construction Projects   Build several PL (CTCSS) Filters!
Audio Buffer and De-Emphasis circuit   Use this circuit after a repeater receiver to de-emphasize the audio going to your controller.   By Lou Harris  N1UEC (offsite link)
A Poor Ham's Deviation Meter   A theory and practice article on measuring deviation of FM transmitters, by Robert W. Meister WA1MIK
The Repeater Builders Friend   A device to help to you fix your repeater or program your controller   by Matt Krick KC7GSA.
Build Youself a Service Monitor ?   Well, sort of.   By Tom Alldread VA7TA   A simple deviation monitor circuit used with a scanner receiver.
Multi-Element Exposed Dipole for 2M.   A good exposed Four-Bay Dipole Array construction project.
Someone say "6 meter duplexer" ?   A comprehensive conversion of a lowband pass cavity to BpBr by Jeff DePolo WN3A.
Build a telephone line filter that doubles as a lightning protector.   A phone line filter and protector by Kevin Custer W3KKC
A Phone Line Busy Sensing Circuit   By Monte Smith, WDØDIR, from ACC Notes, April, 1986.   If you need to share a phone line between your home and a repeater here's how to tell the repeater controller that the phone line is in use.
Build an audio buffer amplifier.   Kick the audio in the butt by Kevin Custer  W3KKC
Build a set of CATV Hardline Matching Stubs   by Kevin Custer  W3KKC
Retuning a Stationmaster type antenna   By Jim Barbour WD8CHL
Build a good quality GaAs FET Preamp   For 2 meters, 220 and 440 by Kevin Custer W3KKC
Build a Two Channel Signal to Noise Voter   From the WB2WHC article in October 1992 QST.
Omni-Gain Collinear Repeater Antenna Construction Project   A great 2 meter to 1300 meg antenna project - and there are followup articles on the Antenna Systems page at this web site.
Use an Astron power supply remotely?   Look here!   Don't run to the repeater site to reset the Astron anymore! (scroll down to the Reset Circuits)
Build a set of Band Pass-Band Reject Two Meter Duplexers   From the W1GAN article in the July 1972 QST
Basic Stamp 1 and 2 Repeater Controller construction projects   Cheap controllers by Roger Cameron NØYOX.
Audio Limiter for NBFM   A hard audio limiter like used in broadcast audio.
A Push To Talk Delay Circuit   For ACC controller users
A COR Hang Timer Circuit   A simple controller of sorts
Build a COS Detector Circuit   For creating a COS signal on radios that don't have one
Repeater Controller Construction Projects   Build Controllers and stuff for them!
A Crystal Heater construction project   Make that crystal stable...   By Bob Dengler NO6B    
A Simple Repeater Fan Controller   an 18kb PDF file   By Robert Shepard KA9FLX
A Repeater Fan Controller using a 556 IC. 18kb PDF file   This is a followup to the above with a modification to a single 556 chip.   By George Henry KA3HSW    
Build a Rugged Half-Wave Coaxial Antenna   Same basic design as the CHP uses at base stations. Courtesy of the Scanner Buff Network   (offsite link)
A simple Echolink interface   Easily constructed with about $10 in parts from Radio Shack. Should work with any radio. Courtesy of Matt K3MK

Back to the top of the page
Back to Home


This web page, this web site, the information presented in and on its pages and in these modifications and conversions is © Copyrighted 1995 and (date of last update) by Kevin Custer W3KKC and multiple originating authors.   All Rights Reserved, including that of paper and web publication elsewhere.