Another problem - hopefully the last.....

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G4WIM
Posts: 379
Joined: Thu Jan 29, 2015 8:36 pm

Another problem - hopefully the last.....

Post by G4WIM » Tue Mar 17, 2015 8:34 pm

So I was just putting the finishing touches to my 70cm DATV set up which included fitting a rather nice 70cm DCi bandpass filter on the output of the Dolphin TTRX power amp.

I had read that these amps don't like driving 'hi Q' filters as they can go unstable - well surprise surprise it went unstable, luckily no damage done.

Time for an isolator / circulator between amp and filter - fingers crossed that should fix it.

Any idea where to get one ?

73 Tim
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