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" <summit...@live.com> To: amsat-bb@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@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 _______________________________________________ Sent via AMSAT-BB@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
