Re: [amsat-bb] I wonder if this commercial quadrifilar helicoidal antenna any good?
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@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 _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
On 03/02/2016 12:13 AM, Richard Tejera 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)
Always interested. Thank you!
--Eric
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@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@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 _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
participants (3)
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Ed Krome -
Eric Christensen -
Richard Tejera