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DATV PAs for 24cms

Posted: Thu Dec 06, 2018 12:25 pm
by radiogareth
A while ago (20years!!) I built a PA using one of the then popular bricks M57762 modules. Its on a Bob Platts PCB. As it was intended for ATV I didn't add any ptt in the box, making it a compact and fan cooled unit.
Is it suitable for DATV at reduced drive levels?
Be good to actually use it....
Gareth
2018-12-06 11.30.45.jpg
2018-12-06 11.30.45.jpg (86.47 KiB) Viewed 182 times

Re: DATV PAs for 24cms

Posted: Thu Dec 06, 2018 12:44 pm
by G8GKQ
Yes. I use one with reduced drive, but it is not very linear, so:
  • Only drive it to 5 watts output
  • Don't use it closer than twice your symbol rate in MHz to the band edges or anything else that you don't want to interfere with
Dave, G8GKQ