[TowerTalk] Tower G4A

[donovanf at starpower.net]

Alfredo,

G4A is the designator of the 10 foot side rail of the military AB-105C/FRC tower. This tower is approximately midway between Rohn 55 and Rohn 65 in load bearing capacity.  

I have three 200 foot AB-105C towers and three 150 foot rotating AB-105C towers installed at my QTH with a wide variety of large HF Yagis.  I also have one heavier duty 200 foot 2400H tower, often known as "heavy duty AB-105," with two stacked full sized 40M 3 element Yagis.

Here are a few of the AB-105C specifications:

Maximum rated height: 280 feet
Weight: 11.2 pounds per foot
Face width: 24 inches
Maximum allowable bending moment at top of the tower: 20,000 ft-lbs

For many years, AB-105C Technical Manual TM 11-2615A was available on the Internet, but it is no longer on-line.

What specific AB-105C tower information do you need?

73
Frank
W3LPL



---- Original message ----
>Date: Thu, 2 Apr 2009 20:36:08 -0400
>From: "Alfredo Velez WP3C" <wp3c at aol.com>  
>Subject: [TowerTalk] Tower G4A  
>To: <towertalk at contesting.com>
>
>Hi
>
> 
>
>   My towers are Military G4A, did someone knows as site that talks about
>them? 73’
>
> 
>
> 
>
>Alfredo Vélez WP3C
>
>Web:  <http://www.wp3c.qth.com> http://www.wp3c.qth.com
>
>email:  <mailto:wp3c at aol.com> mailto:wp3c at aol.com
>
>WP3C DX Cluster Node:  <telnet://wp3c.hopto.org> telnet://wp3c.hopto.org
>
> 
>_______________________________________________
>
>
>
>_______________________________________________
>TowerTalk mailing list
>TowerTalk at contesting.com
>http://lists.contesting.com/mailman/listinfo/towertalk