137kHz

Last winter, I tried 137kHz WSPR and OPERA even though my FT817 is very deaf on LF.

In the past, when I was fit, I put my 137kHz beacon on QRSS3 and looked for the signal with a mag-mounted E-field probe on the car. Even though the ERP was low milliwatts at most, I got good copy the far side of Cambridge at about 24km.

At some point I should try 137kHz TX again. It was good fun. Maybe I should resurrect my 137kHz transverter. It is somewhere around.