MSF 5000 VHF PA

[Fox4]

I'm retiring my old MSF 5000 VHF 2M repeater. It has issues I don't care to get fixed. I'm wanting to save the 100 watt PA. It seems OK.
Power supply not so much. Will a 30 volt 25 or 30 amp power supply be OK for it as an alternative? I've considered using it as a back up PA. What a brick that thing is!

 

[petnrdx]

Those are great PA's. I have one we are using here, and if I crank it up all the way it does 225 watts. I am sure it would not do that very long, but they will run all day at their rated power, loafing along. It's what they were built for.
As for PS, 30 VDC is a little high in my opinion.
But if it is a backup, you don't have much to loose by having it just in case.
I found all the MSF's were overbuilt.

 

[mmckenna]

Yeah, the PA's were pretty solid, designed to work as trunking control channels where they were keyed up for 24 hours (or more) straight.

I think a 30 volt supply would be fine. I think ours ran at 28.5 or so. Just don't try to float back up batteries off that. Likely the power supply can be turned down a bit.