simplex: Simplex Radio Co.; All Wave

Dear Radio Friends 

I have here a "piece of junk". I think it is a Simplex Model W All Waves.
It seems it had been underwater. Perhaps it had crossed the ocean by swimming :-) . 
If it is a Simplex, I will try to restore it. It will be "brand new" again, I promise.

Its box is look like other Simplex models, though it is shorter and it has a different design, I must say.
 At the top there is an equal wrinkle piece (not visible in my picture). See: 

http://antiqueradios.com/albums/Simplex/Simp_P_Delux.sized.jpg

http://www.plasticradios.com/simplexrest.html



Why do I think it is a Simplex model W All waves?
 
It has: 
A- 5 colored bulbs to indicate    B -  5 band scales transparent dial




But if  it may be not a Simplex W ......

It has:

 - 7 tubes instead of  8 (as we can read in Nostalgia Air Simplex schematic Page 5-1)....

- quite different escutcheon ? .....




I hope you can help me in this task. Now, fortunately some friends from USA are in Rmorg. I'm sure you can help. 

Thank you in advance

Mário Coelho

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Hi Mario,

I guess it is a "W Allwave": if You put another 42 in front of the already placed one (for push-pull) You will get exactly the 8 tube socket layout as referred to in the "RCA Radio Set Socket Layout Guide 1921 to 1935" .
Isn´t there an empty socket ?

Good luck in restoring it!
KoBi

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Thank You Herr Konrad Birkner for your reply.

Once more, I'm much obliged to You.

I almost had forgotten you are an USA's radio sets expert.

Yes it may be a Simplex W All Waves. I hope so. There is an empty socket's hole in chassis behind the letter B in the  picture above (in my last tread).
I'll find out if that absent tube was ever used in the past in this set.(I'll  analyse carefully the wires around).

Now, about  "RCA Radio Set Socket Layout Guide 1921 to 1935" .
Do You please tell me here can I find that RCA Guide?

I think it may be very useful to identify USA radio sets.
I hope to find also any manual to identify sets by their escutcheons. 

Thank you for your luck wishes. I think I 'll need it.

Best Regards

Mário

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You´re welcome Mario,

That book I had bought years ago from Antique Radio Classified, but I fear it is now out of print. I quoted the complete title, and it was an undated reprint of the 1935 original.
Riders Perpetual vol.5 has the circuit diagram of the model "W allwave", and it displays a push-pull output stage, which would also work on one tube: less power and more distortion, but who cares...

kind regards

KoBi

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Thank You Herr Konrad Birkner for your reply


- About wires and  tubes:

I already checked its wires. There were some changes in this radio, and some possible explanations. The only Power pentode here, is not a 42 but a 6F6G.

I think, at time,as now, I must say, was difficult to get one 42 and it was changed by its equivalent, one 6F6G, changing also its socket. As You said it works without needing another tube in push-pull  :-).

Well. Now, I have two options: to include in this set another 6F6G or I've to try to get two tubes 42.

Do You know were can I get two cheap 42 in net's tube market?

- About the wood cabinet:

As I said before I need to build another cabinet.
I wonder if the old cabinet I have here follows the original design or it was invented.
The design already presented in:   http://www.plasticradios.com/simplexrest.html  is prettier but is not this model "all waves".

What do You suggest? Do I follow my sample's design or I've to follow another?
Is the truthful design for this model  somewhere to be checked or to be copied?

Kind regards

Mário

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