[Antennas] Yagi at 45 feet

Sat Oct 16 09:42:23 EDT 2004

Tom,
I would think that the extra length and probably price would be worth it for 
a 3db gain IF they actually make the 4th element active on all bands. Many 
of the manufacturers ONLY add a 4th 10m element. You have to watch that. I 
think you will enjoy the difference between the dipoles you have used and 
the beam at 45'.
73,
Don, WB5HAK
----- Original Message ----- 
From: "Tom Crawford" <TMCsail at sbcglobal.net>
To: <antennas at mailman.qth.net>
Sent: Friday, October 15, 2004 11:51 PM
Subject: [Antennas] Yagi at 45 feet
> Hello to the group,
>> I've just moved to a new QTH and I'm considering moving up (no pun 
> intended)
> to a tower and a yagi. I have only used dipoles before. I have two 
> questions
> I'd like to toss out to the forum:
>> 1. I am thinking about a free standing mast at about 45 feet. There are
> trees (60 footers) to the South and West of the location - maybe 30 feet
> from the mast. Would one expect these trees to have any significant 
> affect?
>> 2. I am comparing two antennas: The larger (4 element) has a 3 dB 
> advantage
> over the shorter boom (3 element). Now, I understand the math. But, I'd 
> like
> for some old timers to tell me how much practical, on-the-air difference
> there will be between these two antennas.
>> Thanks in advance to all who may have a thought to share.
>> 73,
> Tom W3TMC
> P.S. I'm looking at 20 meters and higher.
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