[TowerTalk] Rotor on AB577

[Joe Subich, K4IK]

> I have a AB577 mast and I need to put a rotor on it - if someone out
> there has done this and would like to share your approach with me,
> please drop me a line.  I built an adaptor I am not completely
> satisfied with out of the top piece I got for the 577.  Does anyone
> know if other top pieces for the mast are available somewhere?  For
> example, a mast adaptor to take the 5" diameter mast down to 2"?

The lower mast adapter for a Tailtwister (P/N 51467-10) will fit the 
AB-577 antenna adapter (stock number 5820-00-973-0200) just fine.  
Unfortunately, the lower mast adapter for the Ham-IV (etc.) series 
is just slightly small.  

73, 

   ... Joe, K4IK