I need a schematic for a Sparton 274

[Dan Walker]

I have exhausted my efforts to find a schematic for a Floor model Sparton model 274.
There are some caps in there that only have numbers on them [no values.
I need some help in determining the MFD values.
Thanks
Dan in Calgary.

[Les Dickson]

Hi Dan. On the radiomuseum website the model was brought forward by Geopge Papaiz. Have you tried contacting him to see if he has any further information? If you’re a member you should be able to follow this link and email him.
https://www.radiomuseum.org/dsp_model_history.cfm?model_pk=230326

[John Greenland]

If you are looking for some part number cross references, there are some listed on the Sparton sheets in the Beitman manuals.
I have no idea if they are of any value.

See page 189 here– http://silverslingshot.com/beitman26_38/1926-38.pdf as an example.

Regards John G.

[Dan Walker]

I did get the part numbers from Sparton radios at nostalgia ,but still no schematic
and I even contacted Dave at Just radios and he does not have it.
I have changed the caps and it plays my MP3 if I connect it to the high end of the volume control BUT I still can’t get it to receive stations.
Dan in Calgary.

[John Greenland]

Dan,
I would suggest that you go back to the Nostalgia site and look at the info on a Sparton 303. It is on the page 2 of the pdf. Page one has a 202.

It has the same tube line up on the front end, (a 58, a24a and another 58) , as your 274 and may be able to offer some help.
It was also made around the same time.

Good luck.

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