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Kent King's Discussions

AW23 alignment issue

Started this discussion. Last reply by Alex R. Whitaker Nov 29, 2023. 8 Replies

Looking for advice and ideas. I'm restoring an early AW23 for a friend. I replaced all the wax caps and have replaced the resistors in the C divider (out of spec, now have good divider voltages). IF…Continue

Kutztown - Things I am bringing

Started this discussion. Last reply by Robert Meader Sep 5, 2023. 7 Replies

Who's going to Kutztown?I have the following items I'll be taking to Kutztown. If you are interested in any of these items, please let me know! I will add each item as a reply to this…Continue

Restored AW23 in Westminster cabinet

Started this discussion. Last reply by Kent King Aug 30, 2023. 1 Reply

Folks -This set is available for sale in the central Ohio (near Columbus) area. I can also deliver it to Kutztown if you make a deal with the seller before then. I restored this set a few years back,…Continue

Need power transformer

Started Aug 19, 2023 0 Replies

An odd request coming from me...I need a power transformer for a McMurdo-Silver Masterpiece VI. It is a horizontal transformer, nothing special really: 5V, 6V and Plate windings, nothing unusual. It…Continue

 

Kent King's Page

Latest Activity

David C. Poland replied to Kent King's discussion The first Allwave 12 Deluxe
"With the AW 12 and AW 15 models, works well to replace the filter caps and the metal bathtub one riveted in place in the tuner, (except the large ones across the back if they are larger, about twice the size of the others). Rather than dismounts the…"
6 hours ago
Richard Sowry replied to Kent King's discussion The first Allwave 12 Deluxe
"Thanks Alex.  The problem is there are no values on the schematic. I've got information on the color codes of the mica caps if they follow the normal color codes of the times, meaning the 1920s and 30s.  I'm probably going to…"
8 hours ago
Kent King replied to John Stafford's discussion AW 23 amplifier voltages low
"John - That is interesting, with today's high line voltages, I always use the "Hi" setting and still have voltages near the top of the acceptable range. What is your local line voltage (mine is usually around 123VAC)?  Check the…"
10 hours ago
Alex R. Whitaker replied to Kent King's discussion The first Allwave 12 Deluxe
"Micamold capacitors, in my experience, are usually mica.  If they are large then they're probably paper.  Military gear uses a lot of the paper ones, and there are some micamold paper caps in the Philharmonic (at least there were in…"
11 hours ago
Richard Sowry replied to Kent King's discussion The first Allwave 12 Deluxe
"Thank You very much Kent.  I don't want to damage anything so I will definitely wait till I restore all the components.  And I'll leave the micas alone.  Till I have another question. I thank you!! Dick"
yesterday
Kent King replied to Kent King's discussion The first Allwave 12 Deluxe
"Dick - Don't power up the amp without the tuner and speaker, the voltage on the first capacitor will go sky high and damage it. It must be run under load. The set B+ should be around 225-250 after the field and filters. Does you set have the…"
yesterday
Richard Sowry replied to Kent King's discussion The first Allwave 12 Deluxe
"Thanks Kent.  I'm a little leery about all the mica caps in this thing.  They are Micamold brand and I've always heard that they are really paper.  What is this forum's opinion?  I opened one up not too long ago…"
yesterday
Kent King replied to Kent King's discussion The first Allwave 12 Deluxe
"Probably not...I think the early AW12 just had an R/C circuit there for the cathode bypass. Kent"
yesterday
Richard Sowry replied to Kent King's discussion The first Allwave 12 Deluxe
"The caps along the back apron on this receiver aren't very big.  They are .1MFD with a 3k resistor in parallel.  They aren't any bigger than the other bathtub caps in the rest of the receiver.  Do these still have the coil…"
yesterday
mike hadley replied to Kent King's discussion The first Allwave 12 Deluxe
"As Dave mentioned earlier the larger bathtub caps have a cap and a coil, they are riveted to the rear apron and the backs are soldered on, here is a photo from one removed from an allwave fifteen, yes a later radio but does share a lot of similar…"
yesterday
Richard Sowry replied to Kent King's discussion The first Allwave 12 Deluxe
"Yes I did.  He said he had it for some time in his living room and was never going to get to restore it so he sold it."
yesterday
David C. Poland replied to Kent King's discussion The first Allwave 12 Deluxe
"Richard - you get that Scott Deluxe from Barry? "
yesterday
David C. Poland replied to Kent King's discussion The first Allwave 12 Deluxe
"Caution, the 3 larger bathtub caps across the rear apron of the Deluxe 12 tube receiver contain a coil. They are in the cathode circuits of the IF amp tubes - in Low stress circuits and I leave these 3 alone, unless there is a problem with cathode…"
yesterday
Richard Sowry replied to Kent King's discussion The first Allwave 12 Deluxe
"Mine is the AW-12 without AVC, with twin speakers.  This is my first Scott so I'm going to restuff everything.  It's kind of like the Philco Bakelite Blocks except they are rivetted in.  I will either replace with screws and…"
Wednesday
David C. Poland replied to Kent King's discussion The first Allwave 12 Deluxe
"I have experience with several AW-12 and AW-15 examples. Never had a new filter cap fail, much less explode. I replace the 8 MFD caps with modern 10 MFD at 450 volts."
Tuesday
Auroraoldradios replied to Kent King's discussion The first Allwave 12 Deluxe
"I used a pair of 10/450 caps on my AW12, but a few months later one of them exploded on power up. Maybe it was defective, but I replaced them with 10/500v. I haven't had any trouble since then."
Tuesday

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Kent King's Blog

Sales Brochure Wanted

Posted on July 3, 2023 at 8:27pm 0 Comments

I found this reference in a 1928 sales booklet. I would like to find the piece described. Next best - a good scan of one if you have it:

Is this a McMurdo Silver cabinet?

Posted on June 27, 2023 at 7:00am 3 Comments

The title says it all...does anyone recognize this as a McMurdo Silver cabinet? I'm guessing it is not, obviously the mounting is all wrong. Opinions?…

Continue

Volume Expander

Posted on March 4, 2023 at 9:16pm 3 Comments

OK folks...question: Here is the schematic of the outboard volume expander for an AW23. I was working on one earlier today and noticed a mod that I had not seen before. If this mod isn't factory, it was done a <long> time ago - near its original production. The mod is simple - a 20ufd/25VDC cap is wired from the 6A7 cathodes to ground (+ side on the cathode). It is soldered right on the wiper of the balance potentiometer. Any thoughts on what this might do? Should I remove it/leave it…

Continue

Comment Wall (21 comments)

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At 10:58am on October 30, 2023, Thomas Day said…

Hi Kent:

I can send the money for the power supply Wednesday. Let me know how and where to send it. iI have used paypal in the past. 
Thanks Thom. 6448 S Fairfield Ave. Chicago, Il 60629. 7737324913

At 11:08am on April 27, 2022, Bill Whelan said…

Hi Mr. King-  I trust you have seen many of the customer cabinets that EH Scott customers commissioned in the 1930.  I a trying to identify if this cabinet originally has EH Scott electronics installed in it.  If not, any ideas?

 Thanks you, Bill Whelan

At 6:28pm on July 16, 2021, norman david warren said…

got the trimmer ok  Thanks  Norman W.

At 12:52am on July 29, 2018, Ralph Kearton said…

Hi Kent 

I'm Keen to get a copy or the collectors guide 

However I would need it shipped to NZ 

The eBay listing doesn't ship herec

Got any ideas as to. How I can get one 

I've just signed up to pay pal if that helps 

Cheers Ralph kearton

At 5:57pm on January 28, 2017, Kent King said…

that image is great! I will add it to the archive. Thank you!

At 2:50pm on January 28, 2017, Joseph W Strickland said…

Kent;

I hope this attachment works. I finished the composite figures 26 and 30 for the Late version 800B. I found this helpful in tracing out the electric tuning arrangement of the 800B receivers.

JoeIf this turns out to not be satisfactory resolution and detail, let me know and I will try sending the *.pdf file which is 5.3MB.

Joe

At 1:58pm on January 14, 2017, Joseph W Strickland said…

Kent;

I took a closer look at the Late 800B parts radio tuner chassis that I have. It is SN 6182 and I found its final test stamp inside the preset tuning assembly backplate and the date is Jan 15, 1947. So that one can be added to your database.

I took the time to take a good photo of the Late version 800B AM SW RF compartment underneath. This unit has never had any parts replaced in that area, so this part of it is unmolested. I had just noticed that the Early version SN 1035 that I have had already been worked on and there were some changes to bypass capacitor placement that I do not agree with. My intent is to put it back as close to original lead dress and parts placement as possible. Sometimes changes in part placement and lead dress can cause significant problems to develop and result in inability to properly align RF circuits.

Joe

At 7:34am on November 23, 2016, Kent King said…

Thanks you! I have added your cleaned up diagrams to the Scott Info Archive 800B folder. Your work is greatly appreciated!

Kent

At 4:50pm on November 21, 2016, Joseph W Strickland said…

Kent;

Yes I am willing to contribute these for fellow members and others use. I enjoy doing this type of work. I was originally in product documentation at Collins Radio which included doing schematics.

Joe

At 8:00am on November 21, 2016, Kent King said…

Joe -

That's great...when you get them done, I will post them in the archive if you are willing. All such work helps everyone here. That is what this forum is all about!

Kent

 
 
 

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