Tag Archives: diplexer

50MHz/70MHz diplexer, part 2

I bought a NanoVNA to properly measure the 6m/4m diplexer. The results were mixed: So, testing the 70MHz high pass showed that there was 22dB attenuation at 50MHz. Not too bad! I could try adjusting the coils for more attenuation, but there was no de-sense on the 4m radio So I’m happy to leave it… Read More »

50MHz/70MHz diplexer

I don’t have a huge garden for an antenna farm, so most of my antenna experiments are located in the attic. Also keeping the neighbours happy, and most importantly, the station manager happy, is a priority! I have several runs of RG213 and RG58 into the attic, but wanted to be able to use 4m… Read More »