Make them the same length as the antenna! Alex 4Z5KS -----Original Message----- From: antennas-bounces at mailman.qth.net [mailto:antennas-bounces at mailman.qth.net] On Behalf Of Dave Sparks Sent: Monday, August 30, 2010 11:47 PM To: antennas at mailman.qth.net Subject: Re: [Antennas] radial lengths for 102 inch cb whip antenna A standard ground plane uses 1/4 wavelength radials, usually 3 of them, sloping downward at a 45 degree angle. -- Dave - AF6AS -------------------------------------------------- From: "Patrick J" <pjm at nrvunwired.net> Sent: Monday, August 30, 2010 2:25 PM To: <antennas at mailman.qth.net> Subject: [Antennas] radial lengths for 102 inch cb whip antenna > Group, >> I am mounting a 102 inch cb whip on a building and would like to > add > some radials to improve performance. Could someone provide me the > calculation(s) I could use to determine the optimal length for the > radials? >> Thanks, >> Patrick > KJ4TRT >>> ______________________________________________________________ > Antennas mailing list > Home: http://mailman.qth.net/mailman/listinfo/antennas > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Antennas at mailman.qth.net >> This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Antennas mailing list Home: http://mailman.qth.net/mailman/listinfo/antennas Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Antennas at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html