Topband: Low Dipole for RX
Robin
wb6tza at socal.rr.com
Thu Oct 1 20:41:48 PDT 2009
Its based on the situation. In SE Asia, it appears that at Sunset it is
often true that signals arrive at very high angles. At XZ0A it was
responsible for something like 50% or more of our NA contacts- under
conditions where NO signals were audible on the beverages.
IF you have local noise sources that arrive at low angles, a high angle
antenna might not hear as much noise compared to signal.
Also, I suspect that it will be most useful at sunset/sunrise, or in
disturbed conditions.
On top band, you CAN NOT HAVE too many receive antennas. If it accounts
for ONE contact every few months that you otherwise could not have
accomplished, hasn't it served its purpose?
Robin, WA6CDR
XZ0A-XZ1N-VP6DX
----- Original Message -----
From: "Hardy Landskov" <n7rt at cox.net>
To: "GALE STEWARD" <k3nd at yahoo.com>; "topband reflector"
<topband at contesting.com>
Sent: Thursday, October 01, 2009 08:46
Subject: Re: Topband: Low Dipole for RX
>I put one up here in AZ and it was a waste of time & energy. But Robin (he
> has a 6 call but I can't remember what it is) used one at XZ and said it
>>> Anyone using a low dipole on 160 for RX? By low, I mean 8-10ft. I could
>> install one of these until some of the foliage dies off and I can
>> install
>> my two-wire beverage.
>>
>> Would this be useful or a waste of time? Also, if anyone is using one of
>> these, did you attach the feedline directly or use some type of
>> matching?
>> Since the Z is pretty low (a few ohms), I thought a 9:1 xfmr might be
>> appropriate.
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