This is a good starting point, my horizontally (40' above ground) mounted OCF Dipole (balanced feed input) suddenly, only works on one band, 20 meters.
I use a Dentron Super Tuner Plus with a Yaesu YC-60 watt-meter to read reflected watts between transceiver.
I go to the settings I have transcribed for each band and, the reflected watts shows that the Tuners is not transforming the load to the radio; the SWR meter on the radio shows a "bad match".
I hooked my MFJ-259 Analyzer in place of the radio and tried the settings for the different frequencies; tuner doesn't tune balanced load.
There is no arcing or singing from my tuner, running digital power levels; nothing over 25 watts so, how would you diagnose a bad balun in a 2 Kw antenna tuner?
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