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Re: Interference problem RX/TX



Hello Again.

Ive tryed the duplex filters.
This like the drawing on http://www.amsat.org/amsat-new/echo/ModeJ.php , 
only i didnt have a dummyload for the unsued 2m output of the duplex flter.

I did some ruff tests before i connected it, 100watt FM TX and USB RX mode.

Uplink/Downlink
145920FM/436800USB = S 5 QRM
145920FM/436000USB= S 9+10 QRM
145920FM/435825USB= S 9+40 QRM

After the duplexer was connected:

Uplink/Downlink
145920FM/436800USB = S <1 QRM
145920FM/436000USB= S  <1 QRM
145920FM/435825USB= S <1 QRM

This worked realy well.

Thanks.

Regards
Brian OZ1SKY 
----
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