[TowerTalk] 6 or 8 ele 20 meter beam

[Dan Cisson]

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 at contesting.com] On Behalf Of Mike Ryan
Sent: Thursday, February 2, 2017 4:36 PM
To: towertalk at 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 at contesting.com] On Behalf Of Jim Thomson
Sent: Thursday, February 02, 2017 3:58 PM
To: towertalk at 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 at w0mu.com>
To: Towertalk <towertalk at 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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