[Towertalk] lmr 400 question

[K7LXC@aol.com]

In a message dated 10/20/02 9:15:40 AM Pacific Daylight Time, 
n4zr@contesting.com writes:

> I've noticed that the portable news-gathering vans seem to use an 
>  alternative sort of rotation loop for their antenna masts.  It looks like 
>  they wrap 6-7 turns of coax around the mast, with the top fixed at the 
>  antenna and bottom end fixed to the truck body, such that when they rotate 
>  360 degrees the coil just loosens or tightens a relatively small 
>  amount.  That seems like a mechanically superior approach.  Anyone tried 
it 
>  in ham installations?  

    Yep. It works FB and eliminates potential hang-ups with a traditional 
rotation loop. 

>  Would it work better with the stiffer cables?
>  
    Sure - there is less actual feedline movement so is pretty benign to 
stiff cables and those with solid center conductors. 

Cheers,
Steve     K7LXC
TOWER TECH -
Professional tower services for commercial and amateur