Sunday, July 17, 2011

T Network Tuner

I came across a roller inductor and two large variable capacitors. No idea of what the values are. But certainly the makings of a tuner. So I cleaned them up and wired them up. The tuner seems to work. There are a jumpers on the caps to have the option of using half of each capacitor. I understand you need less capacitance for the higher bands.

The result is a little oversized for QRP portable. Also after some reading on the net, there is some discussion that a L network is preferable but this is my baseline experiment with the T network. I might employ this at my Dad's house where I hope to do some operating from his workshop.