The PHILCO Phorum
1937 Coronado Model 650 Farm Radio - Printable Version

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RE: 1937 Coronado Model 650 Farm Radio - captainclock1988 - 01-01-2021

I used a Meissner replacement 456 kHz Oscillator Coil. 

I just used a couple of 1.2v NiMH Rechargeable Batteries to power the filaments on this thing. I have a Radio Shack 2 D Cell battery clip that is wired up to a 1N4007 diode for voltage drop and I put my rechargeable D batteries in there.

I was actually able to get about 3 1/2 hours of play time out of the radio with that setup with plenty of juice to spare, and my D batteries weren't even fully charged! :^D

RE: 1937 Coronado Model 650 Farm Radio - RodB - 01-01-2021

My great grandad George was a farmer and he would have been proud to hear something like that working again Well done! Happy New Year.

RE: 1937 Coronado Model 650 Farm Radio - captainclock1988 - 01-08-2021

OK So a strange issue going on with my radio, it had been working like a champ for a week and a half but now all the sudden it refuses to power on, and no its not the batteries because I checked those and they were fine. 

I have a feeling its the power switch as it was kind of acting wonky when I first got this going where it would require being turned on and off a couple of times before it would finally power on.

Any ideas as to what the problem could be?

Thanks,

Levi

RE: 1937 Coronado Model 650 Farm Radio - Paul Philco322 - 01-08-2021

You may have nailed it, power switch........does any current get into the circuit when switch open?

Paul

RE: 1937 Coronado Model 650 Farm Radio - David - 01-08-2021

If you are feeling lucky apply a small amount of WD40 to the switch and work it open and close a few times. let it sit for about a hour then power up your set. Good luck David

RE: 1937 Coronado Model 650 Farm Radio - captainclock1988 - 01-08-2021

Thanks, I'll give those things a try.