Re: SWR Meter
That looks like a good approach. The difficulty in building one will lie in calibrating it afterwards if you don't have trusted instruments available for comparison.
My preference with these things is to forget the VSWR set pot and just have two meters, one showing forwards power, the other reverse power. Best match is with reverse power dipped. Power amps will be happy if the reverse power is below some level. You can take the ratio of the powers and get the return loss of your antenna/feeder and if you want, calculate VSWR from that.
Hving two meters is good. Having one meter condemns you to keep flicking a switch backwards and forwards for eternity.
David
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Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done
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