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

[Zach Metzinger]

On 05/24/20 13:43, Jerry via AMSAT-BB wrote:
> 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?).

I have been eyeing the "144 MHz 5 Pole Low Pass Filter for > 0.75 KW 
built by DL2FCN" on this page:

http://dg7ybn.de/technical/Filters.htm

There is just enough build detail to try constructing my own. I plan to 
test it with the nanoVNA (v1) and also a sweep generator + HP8568 SA.

--- Zach
N0ZGO