Alberto telo's Comments

I'm modifying my comment - check for 500 ohms (not 500K). Although this doesn't appear on the AW12 diagrams, if you look at the AW15 diagram, these two resistors are there in the early (Wunderlich) AW15 diagrams. The 50? resistor is shown as 500 ohms. So if you do read something close to that (if the resistor reads at all) - I'd go with 500 ohms - based on the early AW15 diagram.

The burned area only obscures the multiplier dot. We can see enough green and the black end to know it is 50<something>. Most of the schematics don't have resistor values - but I'd do this - (1) read it with an ohmmeter; if it is close to 500k (which would be grn-blk-yellow dot), I'd go with that as a replacement. A modern 470k is the standard value component and should work. That's about what I'd expect in the circuit here.

Please, I looking for someone that does know the value of the resistor in the first RF Coil. When I open the cover I found that the RF Coil has two resistors, that the schematic don't have on it, and one the color has burned. I know for sure someone worked on the receiver in the late 40's (found few components that were belong to that time) but I don't think whoever was add the two resistors. I posted a couple of pictures. Thanks again.

Thanks for the info, 

The Scott recommended replacement for the Wunderlich tube was a Type 55 tube with a wire connected from the grid cap to one (either one) of the diode plate pins.  Not all Arcturus Wunderlich tubes were blue glass and a couple other companies made equivalents although the equivalents are rare.

Norman 

If there is a grid cap wire from below the chassis inside the tube shield for the 55 tube, may be the suggested conversion to use a 55 tube. The proper blue glass Arcturus Wunderlich tube was a 2.5 volt 6 pin tube with no grid cap. The Wunderlich tube was a low production tube which became unavailable. A number of AW-12 (and AW-15) Scotts used the Wunderlich for 2nd detector, and were later modified for Scott suggested use of the 55 substitute.

The Wunderlich tube socket has dark red center button instead of a tube number. 

The previous owner, or someone before him, substitute the Wunderlich tube with a 55. I haven't fire up the radio, I am waiting for replacing the filter caps and what ever will need to be replace, but I was wonder if I must have the Wunderlich tube. 

Thanks again, I will have time to start the restoration, or I hope so, during the Christmas time. Thanks again. 

Alberto - In Info Archive, in set folders, your set folder is Allwave Deluxe.

There are two owners manuals. Suggest you read through both. but print the one with Art Deco graphics on the cover, as it is for the AVC version with your 12 inch pedestal speaker.

The "Deluxe"  was for the single dial tuning, but it still evolved considerably from mid 1932 to mid 1934, with improvements in the tube line up, the speaker (single 11 inch, then twin speakers and finally Spring 1933 the Jensen pedestal you have), introduction of the rare Wundrlich 2nd detector tube December 1932 for AVC, and so on. Not all versions can be found with the exact circuit diagram. So if yours differs in some way, and the wiring looks original, then stick with the actual wiring you have.

Remember, Scott was a custom set builder. Each set was built upon receipt of an order. Scott was chasing performance and audio quality,  and Scott made design changes in pursuit of improved performance during a model run. Think of the hand built Rolls Royce automobile.

Restored, the AW-12 (aka Allwave Deluxe 12 tube) is a sensitive set with good audio for an early 1930's radio.

Thank you so much, for sure I will do check the technical info.

Likewise, I have 1933 Scott AW-12 with AVC in an unexpected cabinet. My Milton Grande cabinet was introduced 1934, many months after the AW-12 ceased production. Like Kent commented, my speculation is that Scott took the AW-12 radio in on a trade for a newer Scott model that was installed in the owners original cabinet. So Scott put the traded in AW-12 in an current cabinet. Like yours, the panel was obviously cut and drilled for the 1932-3 AW-12. The later Model 15 and 23 tube High fidelity models would fit most earlier Scott cabinets with minor panel alteration of holes for additional controls.

Scott offered several cabinets, priced separately. The Westminster is a nice cabinet to have, and less commonly seen. The 12 inch (Jensen) pedestal is associated with the AVC version AW-12 set using a blue glass Arcturus Wunderlich tube for 2nd detector.

Be careful during restoration to position the band switch in the full counter clockwise Broadcast band position  before dismounting the internal coil wheel, and do not disturb the band switch until the coil wheel is remounted. This is to avoid damage to the antenna coil switch above. Before commencing restoration and re-capping, read the technical info carefully - availble in the set folder on the Scott site.

That is nice...my wife doesn't really give me any crap about the radios, but she sure wouldn't travel that far just to get one! :-)

Thanks for let me know.  My wife and I, we drove 8 hours to pick up the Scott.  

So that is an EXCELLENT question. The earliest references to the Westminster cabinet are found in 1934 (2nd half of the year, in fact!). If this were a "back fit", we would have the hole for the AW15 BFO button under the bandswitch - but clearly it was never drilled. So...speculation: (1) maybe they bought the set without a cabinet originally, or a basic/inexpensive one, and when the Westminster came out, they liked it so much they ordered one for their set; (2) we know Scott sold refurbished sets at various times - perhaps this earlier AW Deluxe was traded in by a previous owner and resold in 1934/35 in a Westminster. 

The fact it was never drilled for a BFO shows it was built for an Allwave Deluxe - but I sure have no references to Scott offering that cabinet before the fall of 1934. I would keep them together - it is a truly unique combination and in great condition. You'll have a real showpiece with this one!

Kent

Thanks for let me know. I wonder if the Westminster cabinet is the right one, I know that the All Wave 15 used, but I didn't know that the All Wave 12 used as well. 

The set was built before Nov 1932, so it's a fairly early Allwave Deluxe. Very nice set!

Hi, happy to be in this group. The serial number is F-90

Alberto - Welcome! You can find a lot of information about your set in the "Scott Info Archive", click on the near the top of the page. Look in Set Folders >> Allwave Deluxe. There are lots of folks here who will be happy to help you. Finally, I would appreciate if you could give me the serial number of your set. Thank you!

Kent

Thank you so much for the suggestion.