At 05:11 PM 08/06/09, you wrote: >Hello Repeater Builders! > >I am seeking info on making an Icom IC-RP4520 (450-470 >25 watt version) work on 442.825. > >Background story: I am a member of the Shoreline ACS (near Seattle, >WA) and our primary repeater is very old and is failing. It needs >parts (tripler I am told) that we have been unable to find. > >We were recently given an Icom 4520, and are hoping to use it as a >replacement. > >Our repeater site is at a place called CRISTA here in Shoreline - >our antenna is 183' up on their tower. It has great coverage (when >it works!). > >Any information would be greatly appreciated. Thanks! > >-Josh KD7PAJ
The 4530 service manual is downloadable as a PDF from the Icom page at www.repeater-builder.com What is the primary repeater? This mailing list has over 4600 members, and there are a LOT of junque boxes out there (for those unfamiliar with the term, "junque" is high class junk). Someone is bound to have the part you need. If it's a UHF Micor station (which are famous for eating triplers) then I suggest that you read this: <http://www.repeater-builder.com/micor/micor-uhf-station-tripler.html> That article references the UHF mobile low level amplifier. Mods to it are covered here: <http://www.repeater-builder.com/micor/micor-uhf-mobile-lla.html> I think that if you repair the Micor that you will find that when properly set up it will easily outperform the Icom. Mike WA6ILQ
