Richard,

You can find some reviews of the Force 12 Sigma's on e-ham.  They are 
vertical dipoles so  it is a "complete" antenna and you would need no 
radials.    I  know some, maybe older versions, of the multibanders needed 
to be changed manually for bandswitching, but maybe not that way now.   I 
remember reading once how important it is to bring the feed line away at a 
90 degree angle from the center feed point.     Investigated slightly a few 
years ago, but never pursued it.

73, Steve KW3A
----- Original Message ----- 
From: "Richard Fiorello" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, February 22, 2007 11:00 AM
Subject: antenna info


> Hi everyone;
> I was casually looking at the Sigma-40XK
> Has anyone had any experience with one of these?  Supposedly! no radials 
> are
> necessary.  Haven't figured out if there is a remote control switch to
> change bands or if you have to go out and fiddle with the base.  Its seems
> to be self supporting but sounds of light.  If it sounds to good to be 
> true
> probably is.
> Any info will satisfy my curiosity.
> Richard antennas?
>
>
>