According to the W1GHZ antenna book at : http://www.w1ghz.org/antbook/conf/Helical_feed_antennas.pdf
"The ground plane diameter is typically 0.94? in diameter" or about 25.25" for 440 MHz. John WA4WDL -------------------------------------------------- From: "Pete Norris, K1HZU" <[email protected]> Sent: Thursday, June 03, 2010 8:51 PM To: <[email protected]> Subject: [amsat-bb] HELIX REFLECTOR? > Hi All: > I am rebuilding a 440 MHZ Helix that I built several years ago . It worked > very well, but I would like to reduce the size of the reflector to a more > manageable size than I had before. The only reference to reflector size I > can find is, "minimum 20" ". I may be looking in the wrong places. I would > appreciate it, if someone would steer me in the right direction. > Thanks, > Pete, K1HZU > > > > > _______________________________________________ > Sent via [email protected]. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
