CP-100 linear amplifier

[Blackolive]

New toy arrived today.
Grubby and a couple of case screws missing, but looks very well built and unabused/screwdrivered inside.

Started with giving the heatsink a good bath, and dry out.
Derusted the back with citric acid(lemon juice) , then polished with brasso, then everythings had a coat of hard paste wax and a polish.

Next job to replace the electrolytics, fit more substantial power cable, then test

[Blackolive]

More pics

[Blackolive]

More pics

[Blackolive]

Finished

[Otter]

Does it work?

[Samalex]

looks good i had the 163 many moons ago and was a good work horse in the mobile worked the world with it and never really caused any issues or heat up much

[Blackolive]

Does it work?

Thats the next little job, testing, it doesnt look abused and those motorola MRF454 transistors are quite hardy.

It was a kitchen table job with the fire lit tonight, not fit to venture out to the shack

[The Collector]

Personally I'd have tested it first, then consigned it to the "Oh bugger it's knackered, what am I going to do with this?" pile if it didn't work.

I'm glad you seem to know what you're doing though

[Blackolive]

Personally I'd have tested it first, then consigned it to the "Oh bugger it's knackered, what am I going to do with this?" pile if it didn't work.

I'm glad you seem to know what you're doing though

Id worked on the assumption that the worst (most expensive ) case would have been a dead power transistor, which are still available.

tested it over the weekend at its giving out a healthy 65 watts into a dummy load with 4 watts in.
not sure whether the switchable receive preamp is working, but given local noise levels nowadays a receive preamp is neither use nor ornament anyway

[Colomane]

Just a thought , is there a manual/user guide for this CP-100 around