Hope someone can help clear this up. Just found a Crosley model 625 tombstone and I can not locate the schematic on this site or on my Rider's CD. What confuses me the most is that it is an a.c model with a vibrator. I have never heard of that combination. The metal i.d tag on the chassis and the stamp on the cabinet both say it is a model 625 and the label showing the tube line up matches the chassis. The tubes are # 15(3), 6A7, 38,and 30. Many thanks for any help.
Jon.

Hi Jon

Don't plug in this radio. With those tubes it might be a 6 volt DC radio? Vibrators are only needed in radios operating off of DC. 6A7 & 38 have 6 volt heaters. 15's are 2 volt and may be wired with filaments in series. A 30 tube uses 2 volts DC on the filament.

Someone could have modified your radio? Check where power wires connect. Crosley 625 is listed in my books.

Norm

:Hope someone can help clear this up. Just found a Crosley model 625 tombstone and I can not locate the schematic on this site or on my Rider's CD. What confuses me the most is that it is an a.c model with a vibrator. I have never heard of that combination. The metal i.d tag on the chassis and the stamp on the cabinet both say it is a model 625 and the label showing the tube line up matches the chassis. The tubes are # 15(3), 6A7, 38,and 30. Many thanks for any help.
:Jon.

I found a reference to a Model 625E in Stein's book. He lists it as a battery radio, c. 1936. He also cross references to a model called a "Battery 6, for which I couldn't find a scematic either.

But anyway, it must be a farm radio with a vibrator to supply the B+.

Many of these sets were later converted for AC operation. I've encountered a couple like that, and they were pretty well butchered by whoever made the conversion. You ought to be able to tell if the set has been converted - but maybe somebody started the conversion and didn't finish it.

If, in fact this is a converted farm radio, then you'll not find a factory schematic. It's kind of like finding a Model T Ford that some kid in the '50s dropped in a V8.

:I found a reference to a Model 625E in Stein's book. He lists it as a battery radio, c. 1936. He also cross references to a model called a "Battery 6, for which I couldn't find a scematic either.
:
:But anyway, it must be a farm radio with a vibrator to supply the B+.
:
:Many of these sets were later converted for AC operation. I've encountered a couple like that, and they were pretty well butchered by whoever made the conversion. You ought to be able to tell if the set has been converted - but maybe somebody started the conversion and didn't finish it.
:
:If, in fact this is a converted farm radio, then you'll not find a factory schematic. It's kind of like finding a Model T Ford that some kid in the '50s dropped in a V8.

Norm/Doug, Thanks for the responce. The set looks like it was factory wired with an a.c. cord(very old cloth covered)through what also looks like a factory fuse. The cabinet is stamped 625E so I guess that is what it originaly was. If I get a copy of the schematic I will re-convert it back the way it was. It was those # 15 tubes and the vibrator that got me wondering, a lot like several zenith 6 volts I have. Again, many thanks for your help. If anyone has the schematic for the 625E please forward it to my email address. thank you, Jon.jongirolami@aol.com

About a half a year ago I saw an Airline radio on eBay which had an AC/vibrator power supply. The power cord was connected to an octal plug which also had jumpers on it (I think this is how it worked). You plugged in the plug two ways. One connected the receiver for AC use and the other connected it for vibrator use. Very interesting. You could take this radio to different locations (including moving to a new house), and it'd be AC ready when your farm got AC.

If I remembered the model number, you all could see the schematic. It actually was originally made to be a dual power supply radio.

Thomas

:I found a reference to a Model 625E in Stein's book. He lists it as a battery radio, c. 1936. He also cross references to a model called a "Battery 6, for which I couldn't find a scematic either.
:
:But anyway, it must be a farm radio with a vibrator to supply the B+.
:
:Many of these sets were later converted for AC operation. I've encountered a couple like that, and they were pretty well butchered by whoever made the conversion. You ought to be able to tell if the set has been converted - but maybe somebody started the conversion and didn't finish it.
:
:If, in fact this is a converted farm radio, then you'll not find a factory schematic. It's kind of like finding a Model T Ford that some kid in the '50s dropped in a V8.

Doug, You were right on the money. After a closer look at schematics, this is a model 6B1,Battery Six. When I pulled up the Riders reference for a model 625 I saw what I thought was a # 80 rectifier tube when in reality it was the part number for the vibrator. Also the part # for the # 15 tubes is 75 which further made me think this was the wrong schematic. The radio now looks to be all original-even the fuse. Have not run across one with a fuse from this era-got to learn something new. Still don't understang the heavy a.c. cord though. Again many thanks, Jon.

Jon, I’m going to make a wild guess about the power cord and say that the radio may have been converted to operate in a home with a 32 volt lighting system. These rural homes operated from a gasoline powered generator that provided DC current to 32 volt light bulbs. If your radio was converted for this use, then it should have some kind of arrangement installed on the chassis to reduce the voltage.

When I was a kid, I only knew one family that could afford this system. There was a separate building behind their house for the generator, and it looked a lot like the Lincoln welding machines that I became familiar with in later years. I could be mistaken, but I believe the unit would start up automatically when a light in the house was turned on.

:Jon, I’m going to make a wild guess about the power cord and say that the radio may have been converted to operate in a home with a 32 volt lighting system. These rural homes operated from a gasoline powered generator that provided DC current to 32 volt light bulbs. If your radio was converted for this use, then it should have some kind of arrangement installed on the chassis to reduce the voltage.
:
:When I was a kid, I only knew one family that could afford this system. There was a separate building behind their house for the generator, and it looked a lot like the Lincoln welding machines that I became familiar with in later years. I could be mistaken, but I believe the unit would start up automatically when a light in the house was turned on.

Billy, Thanks for the info, now that I have found the schematic, it shows that the radio is all original, just someone put an a.c. plug on the end of the battery cables. Maybe someone set up a 6 volt battery with an a.c. outlet for some sort of reason. There are no changes to the circuit to handle 32 volts. I have a couple of the 32 volt sets that I converted to a.c. only so that they could be played. I do not normaly change radio operating voltages but I am not smart enough at this stuff to make a 32 volt supply. Now all I need is to find out what kind of knobs it had, the ones on it know are of several different types. I would like to run across one of the 32 v. generators but I think the neighbors would object to the noise. Jon Girolami
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