[amsat-bb] RS-44 VU noise from TX

[on4cjq at telenet.be]

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