Re: [Elecraft] Fw: Interesting K3 QRM problem

2014-11-11 Thread alexandr.kobranov
. 2014 17:17:51 Předmět: [Elecraft] Fw: Interesting K3 QRM problem In this recent discussion here on K3 QRM from strong local broadcast stations, W4TV brought up the noise generated in the T/R switching diodes. In doing some experimentation with a bandpass flter in the loop between the RX

Re: [Elecraft] Fw: Interesting K3 QRM problem

2014-11-11 Thread Joe Subich, W4TV
73! Lexa, ok1dst -- Původní zpráva -- Od: Russ Tobolic eru...@att.net Komu: Elecraft@mailman.qth.net Elecraft@mailman.qth.net Datum: 10. 11. 2014 17:17:51 Předmět: [Elecraft] Fw: Interesting K3 QRM problem In this recent discussion here on K3 QRM from strong local broadcast

[Elecraft] Fw: Interesting K3 QRM problem

2014-11-10 Thread Russ Tobolic
In this recent discussion here on K3 QRM from strong local broadcast stations, W4TV brought up the noise generated in the T/R switching diodes. In doing some experimentation with a bandpass flter in the loop between the RX antenna out and in on the KXV3A I have discovered something which has

Re: [Elecraft] Fw: Interesting K3 QRM problem

2014-11-10 Thread Vic Rosenthal 4X6GP/K2VCO
The intermod is generated in the T/R switch, which is before the RX IN/OUT circuitry, so putting a filter in the loop won't help. It must be between the T/R switch and the antenna, which means it has to be able to handle transmitter power. There is a T/R switch in the KPA100 and one in the