Hi all,
I have been given a chassis of a Scharmberg Strauss set that I’m having trouble finding any info on. I know the info is scarce but maybe a forum member might be able to help.
It looks as though it is from a console, and, unusually, it has a magic eye above the dial glass - something I’ve not seen on a SS chassis before, and i’ve not been able to correlate any images of sets with the knob setup on my chassis.
Judging by the line up of valves, 6D6 RF, 6A7 converter, 6D6 IF, 6B7 Detector/AGC, 42 output and 80 Rectifier, dates this to say around maybe late 30 to early 40’s I’m guessing.
Does anyone have a circuit that might be around this era of SS set?
I haven’t included an image but will do so if someone requests it.
Kind Regards!

What magic eye is used? Going by the other valves, I'd guess 6E5.

You are 100% correct, it’s a 6E5

Actually, it’s a 6G5

I think you mean Scharnberg, with an 'n' not an 'm'.

There is very little information on Radiomuseum about that brand, so some good, sharp photos may help.

No mention of Scharnberg Strauss at all in either of Stokes Golden Age of Radio, or in the first four ARTS&P.

Some results of a Trove search:

https://trove.nla.gov.au/newspaper/article/74348307

https://trove.nla.gov.au/newspaper/article/74208368/7305032

The first might have an indicator tube.

S S was evidently made by National Radio owned by Ern Smiths of Adelaide.

N R does feature in ARTS&P. A fit for the valve lineup is Model 51 an AC broadcast receiver: 6A7, 6D6, 6B7, 42, 80, 6E5 indicator. Can submit a scan of the circuit.

Oh wow STC830
Those brochure pics are pretty close matches- especially the control shaft layouts. The second brochure dial pic is similar but not quite the same layout, still single pointer in a circular dial.
If you could supply a scan of the model 51 that would be very much appreciated. This chassis has a shortwave section as well as broadcast.
It has no speaker/field coils assy so I’d love to find the resistance of the field coil so I can either find a suitable choke or bodge in a high wattage resistor. The 42 output valve should be happy with around 7000k of transformer like a100V speaker line transformer.
I will upload some pictures asap.

I'll look in later ARTS&P and see if there is a MW/SW circuit. Will scan and submit to Brad for inclusion here.

Have found Model 48, dual wave with 6E5 indicator, and 2000ohm field. Also Model 41, also dual wave, but no indicator, and field of 2500. Have submitted both to Brad for inclusion here, in case there is some wrinkle and you have an indicator with a field of 2500ohm.

National Radio Model 41 Circuit Diagram
National Radio Model 48 Circuit Diagram
National Radio Model 69 Circuit Diagram

Thanks so much for that STC830. I’m going to have a red hot go at getting this goin, the more info the better. Cheers

No worries, good luck.

Photos uploaded to Post 7. Sorry for the delay - I've been away for the past few days.
Documents uploaded to Post 9.

Re Model 51; I read the wrong model number on that page of 1938 AORSM, it was actually Model 48.
Should be a good performer given the RF stage.

The knob looks very much like a 1938 STC wheel knob.

Thanks for the uploads Brad and STC830, Thanks for the schematics, those at least give me a starting point.
This radio seems to have an extra 6D6 as an RF amp. There seems to be a 6D6 RF, an 6A7 converter, a 6D6 IF, a 6B7 detector AGC a 42 output and an 80 rectifier. There’s a 6G5 magic eye but the 6E5 could be the original and the G is a replacement.
Now to begin the cleanup, and bodging up a suitable speaker and field coil replacement
Thanks again!

The closest 6 valve is model 69 but does not have an indicator tube:
6D6, 6A7, 6D6, 6B7, 42, 80.

This is in both Volumes 1 & 2 of AORSM. Will submit this to Brad too if you like.