[amsat-bb] M2 432 polarity switch

[on4cjq at telenet.be]

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 at amsat.org>
Aan: "amsat-bb" <amsat-bb at 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
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