[TowerTalk] Source for AB-577

[Joe Subich, K4IK]

I have had an AB-577 here in Florida with a dipole (double size 
G5RV) only on the top for about two years.  The bottom two sets 
of guy wires (top of the launcher and about 27') are installed 
but I have nothing other than the wire at the top.  I put it up 
"for a few days" to test the antenna ... but circumstances 
intervened.  

If one were able to attach insulators to the top guying assembly 
and install two dipoles at right angles, a bracketed installation 
might work.  However, one would want to install in absolutely 
calm weather and use the "launcher."  AB-577 mast absolutely can 
not be "walked up."  The size of the "launcher" would require a 
fairly large overhang (or very deep bracket) in a bracketed 
configuration.  

73, 

   ... Joe, K4IK 
 


> -----Original Message-----
> From: towertalk-bounces at contesting.com 
> [mailto:towertalk-bounces at contesting.com] On Behalf Of Dick Green
> Sent: Friday, September 05, 2003 2:26 PM
> To: 'Michael Tope'; towertalk at contesting.com; 'Mike Gilmer - N2MG'
> Cc: paule at sfu.ca
> Subject: RE: [TowerTalk] Source for AB-577
> 
> 
> In my opinion, the AB-577 is not stiff enough without guys, 
> even if the first 20 feet are bracketed. Each section is about 
> five feet in length, and they are connected with circular metal 
> spring clips. Even without a load on top, a very strong wind will 
> likely bend the 30 feet of tubing above the house enough to pop 
> one or more of the spring clips.
> 
> 73, Dick WC1M
>