|[AMRadio] Legal-Limit tuner advice....?|
jpl15 at panix.com
Thu Aug 17 14:35:40 EDT 2006
Soon I'll want an antenna tuner that can handle full-legal-limit AM from
an unbalanced output into a balanced-feedline, balanced loop HF antenna.
There's the Ameritron ATR-30 (I have a 15 currently) - but I thought I'd
ask the Great Convened Masters if anyone had any experiences pro or con
with the various Tuners extant, new or easily available used.
I am going to build one eventually that will automatically tune my
fence-loop at the feedpoint of the antenna over the complete range of
impedances that will be seen at that point - probably use coax or hardline
for the transmission line from the Transmitter - but until then, I'll be
looking for something that can handle, say 500 watts continuous at 100%
My current set-up is: Johnson Valiant unbal out into Ameritron ATR-15,
balanced out into 450-ohm ladder-line to the feedpoint of a loop, approx
450' circumference, around my back fence at a height of roughly 6 feet
AGL. And it tunes 1.1:1 on the AM Windows of 80 M... so the Concept is
working, at least.... A bigger transmitter is, however, on the
Thanks in advance...
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