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Old May 24th 09, 06:17 AM posted to rec.radio.amateur.antenna
Jeff Liebermann[_2_] Jeff Liebermann[_2_] is offline
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Default Piano Wire Antenna for Experimental Rocket

On Sat, 23 May 2009 21:45:15 -0700, Jeff Liebermann
wrote:

You're reinventing the wheel. Look at photos of the original Explorer
I satellite (with Von Braun and others holding it over their heads).
There are 4 wires radiating from the tubular rocket casing forming a
circularly polarized double dipole "turnstile" antenna. Since it's
since one antenna is always visible, there's no blocking by the
missile body. Since it's circularly polarized, there's no positional
nulls and peaks.
http://history.nasa.gov/sputnik/expinfo.html


More photos:
http://www.redstone.army.mil/history/explorer/EXPLORER.html
http://www.redstone.army.mil/history/explorer/Explorer%20One%20Satellite%20Diagram.jpg


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Jeff Liebermann
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