At 08:57 PM 12/5/2005 -0500, you wrote:
The yard is about 160 feet on all 3 sides, and is shaped just like a slice
of pizza.
Hummm how about a delta loop inside a delta loop on their side. if you have
a couple high power load resistors you directional ant. you could even
install 12 volt remote relays and feed lines to change directions. as far
as that goes you could use two relays to change an 80 mt ant to a 40 mt one.
73 Tony
QBE ZUT DE WA4JQS SK
A1-OP FISTS # 10573
EXTRA
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Subject: Re: [AMRadio] Valiant and Loop progress
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In a message dated 12/5/05 5:15:43 PM, [EMAIL PROTECTED] writes (in
part):
I would like to have one antenna that is resonant on 80 and 40 meters
without an antenna tuner, that fits in the 90 foot space.
Brett,
How about an end fed wire 125' -130' long strung up in an inverted-L
configuration. Would operate as a half wave on 80 and a full wave on 40. Requires
a "tuner" but a simple L network will provide a match to 50 ohms. Since the
feed is at a voltage loop on both bands an extensive ground system would NOT
be required, a ground stake and/or the plumbing and heating ducts in your house
should serve just fine.
I've used such a system for the last 10 years at two different locations with
excellent results. Components with adequate voltage ratings will be
required for high power, of course. I currently use my wire as a quarter wave on
160M too which does require a bunch of ground radials and a different feed
network. Can provide additional details if interested.
Dennis D. W7QHO
Glendale, CA
