[amsat-bb] Helical Antenna for 2-meters
SaguaroAstro at cox.net
Sun Feb 5 21:31:59 UTC 2017
Please share the link. Sounds interesting
Sent from Mail for Windows 10
From: Dave Mann
Sent: Sunday, February 5, 2017 12:49
To: amsat-bb at amsat.org
Subject: Re: [amsat-bb] Helical Antenna for 2-meters
Thanks to all! I researched more and found a design on a VK's website. I'll be digging into that real soon now.
Sent from my iPad
> On Feb 5, 2017, at 09:06, Dave Mann <cwo4mann at comcast.net> wrote:
> I just did some calculations from the ARRL Antenna Handbook. I came up with a 6-turn helical with a diameter of 25.826" and a length of 121.65". My first thought was "whoa, dude, like OMG!" (I'm a high school teacher, ok?) I rechecked my calculations and came up with same, plus an impedance of 150 ohms.
> Years ago I used a Fritzel Helical for 2m when I was DA1BB and VP2EHF (during Hurricane Luis in 1994 it ended up someplace out in the Anagada Straights between Anguilla and Sombrero Island).
> What say, you all? Advice, comments welcomed
> Dave, N4CVX
> Sent from my iPad
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