Some guidance regarding Amateur use of circular polarization is given by IARU Region 1 in the VHF Managers Handbook.
IARU-R1 recommend that "Looking into the direction of transmission, helical beam aerials shall have a right-hand thread." See page 122 - 8.8.5 IARU region 1 Technical Recommendation P.1 at http://iaru-r1.org/index.php?option=com_remository&Itemid=173&func=startdown&id=428 73 Trevor M5AKA _______________________________________________ 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
