Guys, I'm confounded by the complexity suggested for all band coverage
of 160m "Top Loaded T Antenna".
May I make a simple suggestion. A simple T antenna will have a radiation
resistance of 10-12 Ohms with electrical height of say 43ft with a Good
ground system of quarter wave radials. By trimming the top load portion
(both legs equal) to resonance on the high end of the band 12 turns of
quarter inch copper tubing wound on a 4 inch ABS pipe with length of 12
inches and three relays would provide entire band coverage when
connected to 12.5 Ohm Un-Un transformer. Cheap generic DPDT relays may
be used to switch resonant points and can handle legal power limit.
Just sayin...
Bob W7RH
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W7RH DM35OS
It has become appallingly obvious that our technology has exceeded our humanity.
Albert Einstein
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