Topband: Rx antennas
charlesh3 at msn.com
Fri May 21 11:01:16 EDT 2004
My experience is the opposite! I had 2 phased arrays of Beverages up for 15
years, one antenna being 1900' and the other 2300' and were used mostly for
DX on the MW broadcast band. Separation between the two wires of each
antenna was approximately 100'.
I found there was almost always a sort of smoothing of the received signal
versus the signal received by T's, inverted L's, and any other non-Beverage
I had around. Sorry, I have no science to back me up here; no strip charts,
no mathematical analysis. I attributed the lack of fading at least partially
to spatial diversity.
If memory serves me, the honorable Dr. Beverage himself discussed this
subject in his 1923 AIEE paper and felt there was a reduction of fading.
From: topband-bounces at contesting.com [mailto:topband-bounces at contesting.com]
On Behalf Of Tom Rauch
Sent: Friday, May 21, 2004 6:50 AM
To: Greg - ZL3IX; Topband Reflector
Subject: Re: Topband: Rx antennas
> The remote steerable array that I now have out in the
country beats the
> socks off all of them, not only because of its pattern
> because of its distance from most of the man-made noise.
One thing I do
> find though, is that the QSB is much deeper on signals
being received on the
> array. Do other people using directional Rx antennas find
the same thing?
Do you mean the absolute signal level variation or your gut
feeling or mental impression of the depth of fading?
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