[amsat-bb] Re: 70cm Helicoil Good/Bad expensive?

[Bob- W7LRD]

Hello Kevin-I have built a few of these antennas over the years.  Mostly for 1.2ghz RHCP tx and 2.4ghz LHCP rx for a dish feed.  As mentioned the polarization is fixed.  The helix antenna is pretty  broad  banded.  I never built one for 70cm or 2m however I have been tempted.  Here it comes....Our next HEO will most certainly have L & S band capability.   I can only hope I will last that long.  If you want some pics I have many.  Yeah they do look cool. 

73 Bob W7LRD 

Seattle 



----- Original Message -----


From: "Kevin Deane" <summit496 at live.com> 
To: amsat-bb at amsat.org 
Sent: Monday, July 11, 2011 5:39:25 PM 
Subject: [amsat-bb]  70cm Helicoil Good/Bad expensive? 


Hello all, whats the take on these antennas? I am sure someone on here has used them and they certainly look cool but how do they perform? 
  
Dont you have to switch polerization on a cross polerized yagi? 
  
I know there is not a perfect antenna, just wondering about the Helicoil... 

Kevin 
KF7MYK 
                                                
_______________________________________________ 
Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author. 
Not an AMSAT-NA member? Join now to support the amateur satellite program! 
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb