37-630 chassis in 37-610 cabinet? - Printable Version
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+--- Thread: 37-630 chassis in 37-610 cabinet? (/showthread.php?tid=18657)
37-630 chassis in 37-610 cabinet? - harleythatcher - 07-09-2018
Will the 37-630 chassis fit in a 37-610 Cabinet? I think this size radio is called the "Bullit"?
Tk you.
Tt
RE: 37-630 chassis in 37-610 cabinet? - Ron Ramirez - 07-09-2018
Yes, but clearance of the 5Y4G rectifier will be an issue since its socket is on top of the power transformer.
Use of a 5Y4GA (shorter tube) will take care of that.
I have a 37-640 chassis in a 38-623 or 624 "Big Bullet" cabinet. I used a 5Y4GA and it fits fine.
RE: 37-630 chassis in 37-610 cabinet? - harleythatcher - 07-09-2018
Tks Ron. How about the shadow meter on the 630? Will it fit? Not even sure if the 610 has one.
Tt
RE: 37-630 chassis in 37-610 cabinet? - Ron Ramirez - 07-09-2018
Ah yes, the shadowmeter. No, the 37-610 has no shadowmeter, so its escutcheon has no provision for one.
If you can find an escutcheon for a 37-630T, or a 37-640B, you can use it in place of the 37-610T escutcheon. A 37-630 or 37-640 console escutcheon is larger and will not fit.
Barring that, you can remove the shadowmeter and connect a 1000 ohm, 1/2 watt resistor under the chassis in place of the shadowmeter.
RE: 37-630 chassis in 37-610 cabinet? - harleythatcher - 07-09-2018
Tk u Ron
Tt
RE: 37-630 chassis in 37-610 cabinet? - mikethedruid - 07-09-2018
Actually, there were different models of the 37-630. One had the rectifier tube on top of the transformer, the other has it on the chassis. The one I am currently working on has it on the chassis.
RE: 37-630 chassis in 37-610 cabinet? - Arran - 07-09-2018
A 5Y4GA or a 5Y4GT? You could also use a "gasp" metal tube in it's place. I don't know why Philco insisted on mounting the rectifier tube socket on the top bell of the transformer, it was likely the same logic with using a modular chassis design, but it causes many issues that a 1950s TV set with the same install would not have.
Regards
Arran
RE: 37-630 chassis in 37-610 cabinet? - Ron Ramirez - 07-09-2018
(07-09-2018, 05:19 PM)mikethedruid Wrote: Actually, there were different models of the 37-630...
Right. The 37-630T chassis has the rectifier next to the audio output tube, on the chassis. The 37-630 console chassis has the rectifier tube on top of the power transformer.
I made an assumption that the OP had a 37-630 console chassis in which case my advice is correct regarding use of a 5Y4GA tube. If the OP has a chassis from a 37-630T, he's good to go as far as fit inside a 37-610T cabinet.
RE: 37-630 chassis in 37-610 cabinet? - harleythatcher - 07-09-2018
Sorry folks, I should have been more clear. I have a chassis for a 37-630 the table top small guy I think it is called the Bullit? The rec tube is NOT located on T1. However I do not have a cabinet for this so I was looking at a cabinet for the 37-610 on ebay and they seemed to be close enough. But i was not sure which is why I came to the experts here. What is the proper designation for this radio?
Thank you for everyone's help.
Tt
RE: 37-630 chassis in 37-610 cabinet? - Ron Ramirez - 07-09-2018
37-630T, Code 122
Late production version: 37-630T, Code 126 (RF unit is different, same frequency coverage)
RE: 37-630 chassis in 37-610 cabinet? - harleythatcher - 07-22-2018
Have almost completed rebuilding the 37-610T chassis and have one more question. THe shadow meter will not fit due to lower edge of speaker. I will replace with a 1k resistor. How about the lite that goes with the S/M? Can I just leave it out or is it needed in ckt? If needed what ohmage resistor would be needed to replace it?
Tks
Tt
RE: 37-630 chassis in 37-610 cabinet? - Radioroslyn - 07-22-2018
The lamp is just connected across the filament line so no need to add a load in it's place.