One supplemental note on the testing of the Arrow and ELK antennas. I indicated that having both the transmit and receive antennas in the same plane with the ELK might have some advantages.
I failed to mention that having the crossed yagi design of the Arrow isolates the 2 antennas from each other and may help to minimize UHF downlink desensing when transmitting on a VHF uplink. This can vary greatly with the configuration and the radios used, but certainly would provide significant isolation when separate radios are used for the uplink and downlink. Recent posts on the Alinco DJ-G7 also highlight the fact that the radio itself my desense on one band when transmitting on the other. In that case, all the isolation in the world might not make any difference. John Kopala N7JK _______________________________________________ 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
