I eliminated that by lowering the gain placing a resistor somewhere in the amp (don't ask me where exactly it is too long ago) GenTX, this too-high gain problem causes parasitic oscillations, very nasty. As the amplifier is also used in the transmitter path for The amplifier in the kit has TOO MUCH gain. IF you find the kit and want to perform it anyway: The result is a very poor strong-signal performance for the receiver on those 'out-of-ham' frequencies, so my advice is to spare yourself the money and effort. To circumvent that, this modification basically places a wideband amplifier (which is what the kit is) between the antenna and the mixer for all other frequencies than the amateur radio bands. The problem with this kit, the FT-980 radio has dedicated band filters in the receiver RF stage ONLY for the amateur radio bands. Many years ago, I performed this mod with the exact kit (d3000347) you are looking for. and some parts are now unobtainium.Īnswer on Usenet: is identical to your question, and explains why this was a dumb Yaesu hack. Please do not hack this 30 year old radio for CB usage. You likely read this 13 year old thread. Yaesu no longer offers this poorly designed $20 parts kit. This radio is NO LONGER Approved for MARS operations after 2000 (or CB operations, that your QRZ profile states). Click to expand.The Yaesu FT-980 is a very old (early 1980s) HF transceiver.

Yaesu ft 2980 mars mod