Yay! Sparton winter project...

[nasadowsk]

I got my hands on an interesting, albeit a bit ugly, Sparton tabletop from '50 or so. That one on fleabay in NJ. Pretty weird set, actually. Continuous tunner that goes 2......3,4,5,6....13,12,11,10,9,8,7. 5Y3 for the 'low voltage' B+ stuff - IF, RF, audio - 130V filtered with an inductor and 2 40mfd caps, and a 5U4 for the sweep crap.

It gets better - there's TWO horizontal outputs in parrallel! And it's only a 16 inch rectangular glass tube. Looks 70 degree deflection. No idea what the heck they were thinking there.

Magnetic focus, typical single ended audio stages, blah blah. Two transformers in it - one for the B+, one for filiments.

4 IF stages, 2 audio IF stages. I didn't look to see if was intercarrier or not.

The set's in decent shape. Mr Mouse moved in years ago, but he didn't munch on anything in there. Mr Vacuum evicted him, and that was that.

The underside of the chassis is pretty simple, the top side's typical dusty dirty.

Should be an interesting set - 4 IF stages should mean it's a bit better than average hopefully, and in any case, it's a weird design, not just another 630 clone....

I'ts barely alive. There was a bit of HV, the B++ doesn't come up to the listed 340, but it's not horrid. The HV issues are easy - both 6BQ6s look pretty beaten up. The 5U4 was trashed internally - filliment exploded into a few pieces (!). I'm guessing with real HV on the CRT it should do more interesting things.

The suction cup is a gonner. Need another. Oh well.

Still looking for one of them New Vista B&W portables, with a transformer power supply. Haven't found one yet