EH Scott Radio Enthusiasts

The Fine Things are Always Hand Made

Latest Activity

David C. Poland replied to mike hadley's discussion Wunderlich substitute
"Joe - I did not make extensive notes  on that radio other than the use of the 2 type 57 tubes. and that it was pretty much the May 1934 diagram. Do you have the May 1934 factory diagram?"
1 hour ago
David C. Poland replied to mike hadley's discussion Dogbone resistors
"Nice"
5 hours ago
Joseph W Strickland replied to mike hadley's discussion Wunderlich substitute
"Mike; Did you get a chance yet to check your audio output tubes to see if the one with high voltage has low emission? I have one tube tester that covers the older tube types such as the 2A3, 56, 58, 80 etc. and another one that covers all the more…"
12 hours ago
Joseph W Strickland replied to mike hadley's discussion Dogbone resistors
"Mike; That is a job well done! They look just like the originals and have the advantage of new parts inside with closer tolerances and correct values. I have also found that metal film resistors are quite reliable and stand overheating quite well as…"
12 hours ago
mike hadley posted a discussion

Dogbone resistors

Some of the dogbone resistors have been removed from my allwave fifteen and replaced with a collection of rather dubious types, as it is my intention to tidy things up I want to replace these resistors with types similar to the original, realising tha new old stock may have drifted as far out as those in service left me with a problem,After trawling through the Internet I found this"http://www.radiomuseum.org/forum/replicating_old_dogbone_resistors.html"The results are pretty spectacular, I…See More
14 hours ago
Joseph W Strickland replied to mike hadley's discussion Wunderlich substitute
"I looked at the specifications for the type 57 and type 58 tubes. There is little difference, some slight differences in input and output capacitance. The data on the type 57 says it is similar to a type 6J7 metal tube and the type 58 says it is…"
yesterday
Norman S Braithwaite commented on Y2K Bruce's status
"Yes.  EH Scott Radio Laboratories started using the serial number plates with the Allwave Deluxe.  Prior to that time, if you are lucky, you may find a four digit number handwritten in pencil.  To my knowledge, nobody is collecting or…"
yesterday
Joseph W Strickland replied to mike hadley's discussion Wunderlich substitute
"David; I prepared a second version of the All Wave 15 equipped with the Wunderlich tube based on your comments and the schematic that I did for the first version. Would you please take a look at it and see if you can identify the resistors that were…"
yesterday
Y2K Bruce posted a status
"In process of buying AW12 Dual dial from original family.Does not have a serial plate on it in back. Is that normal to be missing the plate?"
yesterday
Joseph W Strickland replied to mike hadley's discussion Wunderlich substitute
"David; Thanks for the compliment on the schematic redraw. It would be interesting to see what the differences are between the type 57 and 58 tubes. The type 57 may have had slightly better RF gain or different internal capacitances that provided…"
Monday
David C. Poland replied to mike hadley's discussion Wunderlich substitute
"Joe,  Nice job on your cleaned up April 1934 diagram. More on set variations: I kept the 5-17-1934 diagram on which I made notes for a Wunderlick set I had for awhile -  Ser# #H-416. Contrary to the April 1934 version you started with and…"
Monday
Lance Hughes commented on Steve Brown's status
"Good morning Steve. That someone is my friend. LOL!!! Great person and rest assured the radio is going to a great home where it will be enjoyed. Thank you for the prompt response."
Sunday
Joseph W Strickland replied to mike hadley's discussion Wunderlich substitute
"David; Thanks for those differences mentioned. I am not surprised after seeing the number of differences already documented in official E. H. Scott schematics and parts lists. The technology was rapidly advancing during this period and Mr. Scott was…"
Sunday
mike hadley replied to mike hadley's discussion Wunderlich substitute
"Hi Joe, I will be working on my allwave over the next few weeks, I have printed off your schematic, I intend to make any further modifications and alterations as I go, I think that I will have to find some 56 tubes  as I have odd plate voltages…"
Sunday
David C. Poland replied to mike hadley's discussion Wunderlich substitute
"Joe, FYI - There are 5 Scott model Fifteen diagrams that I know of reflecting the evolution of this model. Two for the Wunderlick. The first with a 55 tube appears to use the same center tapped secondary of the final I F transformer with the…"
Sunday
Dave posted a status
"Let me know Steve, I'm a buyer and visiting the area at this time"
Sunday

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Forum

Wunderlich substitute

Started by mike hadley. Last reply by David C. Poland 1 hour ago. 19 Replies

Has anyone tried to substitute the wunderlich as fitted to the all wave sets,I was thinking along the lines of an old tube base turned into an adaptor with a 3a5 that has its anodes connected…Continue

Dogbone resistors

Started by mike hadley. Last reply by David C. Poland 5 hours ago. 2 Replies

Some of the dogbone resistors have been removed from my allwave fifteen and replaced with a collection of rather dubious types, as it is my intention to tidy things up I want to replace these…Continue

Some progress on the Early 800B

Started by Joseph W Strickland. Last reply by Joseph W Strickland on Saturday. 2 Replies

Today I finished the replacement of the outer jacket on the 12-wire cable from the radio-tuner chassis to the power supply. I took time to ohm out each wire from the 12-pin plug to its destination in…Continue

ALLWAVE 23 EXPANDER UNIT ADAPTER-PLUG

Started by Jeff Barna. Last reply by Norman S Braithwaite on Saturday. 4 Replies

Help! I need the 'adapter-plug' that connects the Expander unit to the Amplifier unit (mine was broken years ago when the radio was moved to our house). It is a 7-prong plug that goes between the…Continue

Blog Posts

Shield Grid 9 Renewing...........

Posted by Steve Larrabee on March 13, 2017 at 8:00pm 6 Comments

Hi Kent:  I am working on a Shield Grid 9 now that is in very good shape. I have dismounted the SGA (shield grid assembly) because of low filament voltage on the three 22s - max I can get is 2 volts with 5 volts on the entry bus.  Taking that SGA off and opening it was much more of a chore than necessary because the designer apparently didn't think it would ever be required.  The paperwork discusses the short wave ability of the SG-9 and the need to change the coil in the 630 Antenna…

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PBS "American Experience" YouTube "Empire of the Air"

Posted by Tom Jardine on March 7, 2017 at 11:24am 0 Comments

Here's a YouTube link to the PBS American Experience special "Empire of the Air", much taken from the Tom Lewis book. If you like old radio, you'll love this. https://youtu.be/-YEFlHGQLEE

Super XII Restoration

Posted by Kent King on January 27, 2017 at 1:48pm 8 Comments

A Fast Tour

 

The first step I always take is to remove all the tubes, shields, covers and anything else that can be removed from the chassis. This leaves us with something that looks like this:

 

And underneath we have:…

Continue

McMurdo Silver Schematic

Posted by Dave on January 21, 2017 at 12:48pm 8 Comments

Need help with schematics for the Masterpiece 6. There was an early/late version, mine the earlier with dual choke power supply. There may
Be other variations much like Scott.
 
 
 

Notes

Welcome to our Site!

Welcome to The E.H. Scott Enthusiasts Site. If you are looking for manuals or service data on a Scott set, please click on the "Scott Info Archive" link above. If you have questions for forum members, a picture is worth a thousand words, please post a pic or two to help describe your question or problem. Finally, this forum works best when we all contribute. Answer questions, provide feedback, and if you have a document worth sharing, please scan it in as a PDF and forward it to me: Kent…

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