[amsat-bb] NASA Helical Antenna Question

[Tom Clark]

Let me offer as a reference 
https://www.cv.nrao.edu/~demerson/helixgain/helix.htm by Darrell 
Emerson, AA7FV.

FYI, Darrell is an AMSAT member and he is the only person ever to 
achieve ZRO level 9 (see QEX, Jan 92. pg17 or online at 
http://www.qsl.net/aa7fv/DSPweak.htm) by copying a weak signal sent thru 
AO-13 at 0, -3, -6 ... -27 dB level steps.

73 de Tom, K3IO


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