Viggo, I was worried about this same thing. I built a PIN diode switch that disconnected the RX antenna during transmit and that worked well, but it is quite a complex system because it requires a special power supply to switch the bias voltage from receive to transmit.
When I set up a new station I did something much simpler: I now have a limiter connected in line with the receive antenna input of the K3. I used this part from Minicircuits: RLM-33-2W+. https://www.minicircuits.com/WebStore/dashboard.html?model=RLM-33-2W%2B This part is quite costly, but it is the simplest way to limit power. It is able to absorb up to 2 W and limit the power level to +13 dBm (20 mW) at the receive input, which is safe for the K3/K4. I built it into a small box with coaxial input and output connectors. I hope you can try one of these interesting devices. Regards, Al W6LX ______________________________________________________________ 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]
