EH Scott Radio Enthusiasts

The Fine Things are Always Hand Made

Thomas Day
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  • Chicago, IL
  • United States
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Thomas Day's Discussions

Allwave 23 RF alignment

Started this discussion. Last reply by Thomas Day Jan 24, 2017. 5 Replies

The directions for the RF alignment of the Allwave 23 say that you connect the generator to the antenna terminals thru the "proper dummy". Capacitor? value? For all of the alignments I have done over…Continue

Allwave 23 Chrome covers

Started this discussion. Last reply by David C. Poland Apr 15, 2016. 1 Reply

I have a set of chrome covers in good condition for the power transformer for the Allwave 23.I also have the transformer, but it has a shorted primary winding. If anyone is interested let me…Continue

second allwave 23 added to collection

Started this discussion. Last reply by Thomas Day Feb 13, 2015. 3 Replies

I have just added J497 to my Allwave 23 collection. This is just the receiver chassis. It is in rough shape and has been 'modified' with extra controls. It looks to have been a 7 knob chassis and has…Continue

Silver Ghosts by JWF Puett

Started this discussion. Last reply by Kent King Oct 6, 2019. 8 Replies

I have a copy of this that I have had since the 1970's. It is the publication that got me hooked on Scott radios and finally led me to buy my Allwave 23. It was mentioned in a copy of Audio Magazine,…Continue

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Latest Activity

Thomas Day left a comment for mike hadley
"Mike: Nice power supply. I can source a similar used Heathkit supply here on Ebay. I worked for them from 1967 thru 1974. I left in 1975. Here, Hammond transformer company makes suitable transformers for tube equipment at reasonable prices. I also…"
Feb 28
Thomas Day commented on Frank DeFilippi's blog post WTB All Wave 23 amplifier/power supply
"One possibility that I am considering is building a power supply for an Allwave 23 chassis that I have. I bought the chassis as a parts chassis without a power supply. While I do have an original supply that goes with my complete all wave 23, I…"
Feb 27
Jon Ketron and Thomas Day are now friends
Feb 13
Thomas Day liked Dave's discussion AW 23 Volume Expander
Dec 15, 2019
Thomas Day left a comment for Chris J. Buttery
"Welcome to the group.   "
Nov 16, 2019
Thomas Day replied to Y2K Bruce's discussion AW 27 on my work bench
"Looks nice. Is there a cabinet?"
Nov 14, 2019
Thomas Day commented on Robert Feenstra's blog post Philharmonic AM/FM
"Great to know that everything should be OK."
Nov 12, 2019
Thomas Day commented on Felix-A. Gravel's photo
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Jensen A12 Speakers

"Felix: Check the values of the field coils.  Unless these are identical, Jensen A12 speakers can have different values. The A12's that were used by Hammond in their tone cabinets have different values because of their use in the power…"
Oct 30, 2019
Thomas Day replied to Troy Taylor's discussion Modified Allwave 23 questions
"Hard to tell. The build date seems to be 9th week of 1949, which was getting close to the end of EM speaker production. It could be that the person who replaced the original was able to find one with the right voice coll value and close to the right…"
Oct 14, 2019
Thomas Day replied to Dave's discussion AW 23 Volume Expander
"Troy: Probably just a coincidence, tubes do go bad in strange ways and not because of anything you did or didn't do. The VRE probably had nothing to do with the tube going bad, unless there was a DC voltage on the grid, but the inputs and…"
Oct 14, 2019
Kent King replied to Thomas Day's discussion Silver Ghosts by JWF Puett
"I talked to June fairly often in the 90s. He has been gone a few years now, I do not know if the family or estate have maintained the copyright. I have most of his publications around Scott, he also did a book on "big radios", supposedly…"
Oct 6, 2019
Thomas Day liked Kent King's discussion Scott serial numbers
Oct 6, 2019
Scott Seickel replied to Thomas Day's discussion Silver Ghosts by JWF Puett
"I have a 4th edition (1981) copy that is near mint.  I would be willing to have a high quality PDF copy made to give to fellow collectors, but I don't know how to tell if it is still has a valid copyright."
Oct 5, 2019
Dave replied to Thomas Day's discussion Silver Ghosts by JWF Puett
"Old thread but curious if anyone has made reprints of Mr Puett’s work, PDFs ??"
Oct 4, 2019
Thomas Day replied to mike hadley's discussion 30 into 23 will go
"Excellent work.  "
Sep 24, 2019
Thomas Day liked mike hadley's discussion 30 into 23 will go
Sep 24, 2019

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Comment Wall (6 comments)

At 5:28pm on April 28, 2011, David C. Poland said…

Look for a current drain.

 

My first AW-23 had a shorted primary when I acquired it 15 years ago. (I should have been suspicious of the 10 amp primary fuse  ...  like maybe a proper 3 amp fuse would blow.). Anyway, I recapped it before powering up the first time on my variac. The proper size fuse  would blow when my variac reached about 40 volts. I eventually obtained another power transformer from a rough amp, and the radio ran great. Then a year or so later the fuse blew Christmas day, after it had been playing 3-4 hours ..... same problem as before, blowing the fuse at moderate variac voltage.

 

The ultimate problem turned out to be in the speaker. The red B+ wire inside the pedestal from the speaker terminal strip to the field coil was laying across the point of a screw and made a partial connection at high voltage through the worn insulation. Excessive current was not quite enough to blow the fuse but enough to overheat the transformer,  progressively cooking  the transformer until the primary failed blowing the fuse the day I ran it several hours. I found the problem by close visual inspection of the routing of the wires in the speaker. Corrected the wire location, and the power transformer #3 has worked out fine for many years.

At 8:04pm on May 23, 2011, Kent King said…

Thom - Actually, it was Norman Braithwaite that put the checklist on here. I don't have a link handy right now, but I'll try to find it and post a link here...

Kent

At 8:05pm on May 23, 2011, Kent King said…
At 9:31pm on October 31, 2013, Dan Fox said…

Thanks, Thom, you were right-I am looking for a .25mfd @1250v, not 25mfd (wouldn't be the first time I've missed the point!).  Which leaves me with the same problem-where can I find one?

At 7:47pm on November 1, 2013, Dan Fox said…

Thanks again-I will give this information to my friend who has the chassis on his bench right now (waiting for condensers).  I have lived in Muskegon 25 years, and while I have been to the Frauenthal many times, I have never had a chance to go when the Damfinos get together.  That Barton pipe organ looks like a bear to operate!  An old aquaintance of mine, Cliff Martin, played it for many years.

At 10:07pm on September 9, 2018, Brian Sherrod said…

Hi Thomas, right after I posted my thread I discovered my model is a 310, not a 510.  I was relieved since the 310 did not have the power amp to begin with, and I thought mine was missing.  I removed my thread due to that since it was wasted space...  

Thanks for the comment and tip.

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