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

[Steve Kristoff]

I've considered getting Mini-Circuits high and low pass filters to go between my handhelds and my Arrow antenna. But the datasheets for the ones that I looked at only rate the filters at 0.5W. I'd be pushing about 5 W through them. 
Does anyone here have experience doing that to these filters and can comment on whether that works or not?
Are there Mini-circuits filters that will handle 5 W comfortably?
Steve AI9IN
 
----- Original Message -----
From: Jerry via AMSAT-BB (amsat-bb at amsat.org)
Date: 05/24/20 14:45
To: Andy Brian (briaandy at gmail.com)
Cc: amsat-bb (amsat-bb at amsat.org)
Subject: Re: [amsat-bb] RS-44 VU noise from TX

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