Would a gas discharge tube save the sensitive parts? David G3UNA
> On 05 June 2021 at 16:20 "Dr. William J. Schmidt" <[email protected]> wrote: > > > This happened with my backup amp at the contest station on J6. I left it > connected by accident overnight (too much rum) and we had some static > storms. Took out the pin diodes (well, more accurately the diodes that act > like PIN diodes). When put in operate, the receive drops by 30+ dB but > still transmits fine. A simple replacement of the four diodes and three (?) > transistors solved the problem. Dirt cheap. You can make these > measurements at the test-points to confirm: > > > TP2= RX 13.1, TX 0.8 > TP4= RX 3.9, TX 13 > > > Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ > > email: [email protected] > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
