Posted by
Dave Van Wallaghen on
Jul 27, 2009; 2:11pm
URL: http://elecraft.85.s1.nabble.com/Diversity-Receiving-Antennas-tp3331122p3333992.html
Bill,
Yes, I would agree with you. My transmitting doublet runs N and S while my unterminated wire runs E and W with a height difference of almost 30'. So I'm sure it meets the criteria you laid out.
For my more permanent installation I plan to use one of the ICE RF limiters on the Beverage input.
Thanks again for your comments. I'm starting to get a better picture of what I'm going to do.
73,
Dave W8FGU
------Original Message------
From: Bill W4ZV
Sender:
[hidden email]
To:
[hidden email]
Subject: Re: [Elecraft] [OT] Diversity Receiving Antennas
Sent: Jul 27, 2009 7:21 AM
Dave et al,
A diversity RX antenna doesn't need to be complicated. All you need is
something that is somewhat different than your TX antenna. By "different" I
mean:
1. different polarization (e.g. a vertical if you're using a Yagi).
2. different takeoff angle (e.g. a low tribander you're using a high one)
3. different azimuth angle (e.g. a tribander pointed in a different
direction)
Your "Beverage" was probably acting like a low horizontally polarized
antenna with a high takeoff angle, so it filled several of the above
criteria. If you do use another Yagi, take precautions to limit the RX ANT
input when transmitting.
73, Bill
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