[amsat-bb] I wonder if this commercial quadrifilar helicoidal antenna any good?

[Ed Krome]

Google jcoppens.com
I just built one cut to 140MHz. Works OK (with rather broad 2M preamp) on both weather sats and cubesats. Doesn't have great input return loss; tweaking wouldn't hurt but I'm not going to mess with it. Get it as high and clear as you can. 

Ed K9EK

Sent from my iPhone

> On Mar 2, 2016, at 12:13 AM, Richard Tejera <Saguaroastro at cox.net> wrote:
> 
> I made one for 137mHz to decode the NOAA WX says. Easier than it looks. Cost was about $25. I found an online applet that calculates the dimensions and prints a drilling template
> If your intersted,let me know and I'll dig up the url. (Bookmarked on another computer)
> 
> Rick Tejera K7TEJ
> Saguaro Astronomy Club
> www.SaguaroAstro.org
> Thunderbird Amateur Radio Club
> www.w7tbc.org
> 
> On March 1, 2016, at 08:56, Eric Christensen <eric at christensenplace.us> wrote:
> 
> On 03/01/2016 10:11 AM, Andrew Glasbrenner wrote:
>> I have the UHF model. It lives on a magnet base stuck to the side of the AC air handler in my garage, and I hang my yard work hat on it. It was worse than a 2m 1/4 wave whip on receive on AO-51.
> 
> Thanks, Drew (and everyone else that responded).  I just need to figure
> out how to get those M2 yagis up in the air, really.
> 
> 73,
> Eric WG3K
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