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[TowerTalk] Re: Are higher HF antenna's really better?

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Subject: [TowerTalk] Re: Are higher HF antenna's really better?
From: (Jan Erik Holm)
Date: Sat, 12 Jan 2002 07:28:18 +0100

¨This bounced before so 2:nd try.

Jan Erik Holm wrote:

> From the top of my head , if you feed them out of phase you will
> get a main loobe at around 30 degs, that´s also a way to
> get a fill.
> I have a similar set up on 20 (65 over 135 ft) and sometimes it
> stinks in to USA when in phase but out of phase it´s a killer
> again, however long path in to VK/ZL  in phase is a giant killer.
> By the way, when there is high angle into USA a 4 el Yagi at
> 70 ft beats the stack with 10-15 dB if the stack is in phase.
> Now this was 20, on 10 and 15 I have similar stack´s (2 wl over 1 wl,
> 10 actually a bit higher) but on those bands it doesn´t pay off to have
> the in an out of phase switching. On 15 stack in phase is the best deal
> 90% of the time on everything and on 10 the stack is always best in
> phase on anything.
> I guess the sum of things are that if we are talking about 20/15/10 the
> only band you need to worry about is 20 if you have high antennas,
> this is ofcourse in general terms spoken.
> It might be different from other locations ofcourse
> 73, Jim SM2EKM

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