I recently had the need to check a transceiver to ensure that it was on-frequency. This is easiest done with a frequency counter, which is included in an MFJ Antenna Analyzer. I use an inductive coupler made from some coil wire around a small (1/2 inch) piece of CPVC, with the coil connected to a BNC connector.
Inductive Coupler
Radio set frequency (28.5 MHz)
Frequncy (28.499 MHz, or close enough considering the potential error in the antenna analyzer)
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Category: Equipment
About the Author
Andrew is the owner of this blog and enjoys computer programming, building things, and photography. He's a pretty busy guy, which explains why updates to this blog are so infrequent.
