That was in 1988.... I sent him the details of the 7 el on 65 ft boom I have
now @ 151 Ft...73 Dan N4GNR
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Mike Ryan
Sent: Thursday, February 2, 2017 4:36 PM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] 6 or 8 ele 20 meter beam
You guys are talking the size that Dan, N4GNR is accustomed to. His is 10
elements on a 120ft boom. Did I mention that the boom was Rohn 25 tower? -
Mike
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Jim
Thomson
Sent: Thursday, February 02, 2017 3:58 PM
To: towertalk@contesting.com
Subject: [TowerTalk] 6 or 8 ele 20 meter beam
Date: Wed, 1 Feb 2017 12:12:24 -0700
From: W0MU Mike Fatchett <w0mu@w0mu.com>
To: Towertalk <towertalk@contesting.com>
Subject: [TowerTalk] 6 or 8 ele 20 meter beam
I am looking to side mount and maybe rotate a 6 or 8 element 20 meter beam
would anyone care to share their designs? I have a bunch of aluminum itching
to become an antenna!
W0MU
## side mount on what type of tower ? Maybe rotate ? If it
is fixed in direction, you are stuck in one direction, with half power points
well below 48 degs.
## dave is right, stacking a pair of small yagis would provide the same aprx
amount of gain. A pair of 204BAs, at 40 lb each, is
a lot easier than 60-88 ft long boom monsters. Then you can use
the typ top – bottom – both config. The monster yagi, at the wrong
height for that particular time of day leaves you with no options.
## with a boom in the 60-88 ft long range, the tq issue on the tower has to
be dealt with. Along with ice + snow loading, ice + wind at the same time.
If the swr is off a bit, then what, haul the monster back down ? Any type of
feedline or balun issue, and again, it has to come back down. There is big,
then
there is too big.
Jim VE7RF
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