Hoi,
Instead of putting a diplexer as filter( best is to use 1 per band), if you have the possibilty to make stuff your own, just 'split' a diplexer by making an LPF (low pass filter) at the 2m antenne and a HPF ( high pass filter) at the 70cm antenne. Or find some to buy (MINI CIRCUITS maybe?). This way you have a filter at both antennas. Mostly a diplexer is used only on one antenna, while the other diplexer port is closed with a small dummy load. Keep in mind the tx-pwr!
Best 73's
Jerry,ON4CJQ
----- Oorspronkelijk bericht ----- Van: "amsat-bb" amsat-bb@amsat.org Aan: "amsat-bb" amsat-bb@amsat.org Verzonden: Zondag 24 mei 2020 11:14:51 Onderwerp: [amsat-bb] RS-44 VU noise from TX
Hi
any good suggestion how to reduce noise from VHF TX on receiving on UHF fo RS44
I'm using two antenna antena 8meters away each other but is hard to hear anything when TX.
73 Andy _______________________________________________ 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: https://www.amsat.org/mailman/listinfo/amsat-bb