Tuned Rf Wavemeter

  
Ll and L2 form a tuned transformer. About a 1:3 turns ratio is optimum. L2 and CI tune to the desired frequency. The fre
Tuned Rf Wavemeter - schematic

quency range can be 10 kHz to over 200 MHz, depending on the value of CI. For HF use, CI can be a 140-pF variable. For VHF, use about 25 pF. Use of a 2.5 RF choke will yield an untuned wavemeter.




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