Hello Mike
there is a much cheaper way!! M² is good but VERY pricy. just put a tohtsu cx-120A or CX-140 coaxrelay in a box, a folded dipole and a 1/2 coax balun. The relay has 2 connections at 1 side and 1 connection at the other side. the one side with the 2 connections: connect each side of the folded dipole to either relay contact, the side with the 1 relay-conection is for the feeder to trx. i made this for 2m and 70cm crossyagis, and works FB for switching from RHCP to LHCP. the price for the relay cx-120: 37.50€ , a small plastic box: a few €'s....the price for the M²'s: multiply by 7 or 8
best 73's
Jerry,ON4CJQ
----- Oorspronkelijk bericht ----- Van: "amsat-bb" amsat-bb@amsat.org Aan: "amsat-bb" amsat-bb@amsat.org Verzonden: Zondag 25 maart 2018 15:58:45 Onderwerp: [amsat-bb] M2 432 polarity switch
M2 sells a driven element assembly that allows polarity switching for there 435 antennas. Has any one used this product and can comment? Is there a cheaper way to do this? Thanks Mike _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb