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

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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