I first noticed that my TH7DX was not hearing as well as my other 15m
antennas. The TH7DX does not resonant on 10/15m but works fine on 20m. SWR at
the ant
is >3/1 from 21.0 to 21.9mhz, then decreases to 1.7/1@22.3mhz and back to 3/1
at 22.9 mhz. On 28mhz: SWR is 2/1 from 28.0 to 29.0mhz. The balum was removed
to collect this data. Does anyone have a systematic approach to determining
which trap or etc is the source of the problem. Hygain tech support was of
little assistance. Thanks in advance for your reply.
Russ - NN3Q
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