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 Post subject: Re: Roaring 20s Superhets
PostPosted: Feb Sat 10, 2018 7:36 am 
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Location: Radio Heaven, North Carolina, near Charlotte, 28106-3015
I've had good results cleaning a panel like that using The Treatment.
Looking closely at the photos I think it would work good, Goop and
0000 steelwool I think would work great.

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 Post subject: Re: Roaring 20s Superhets
PostPosted: Feb Sat 10, 2018 7:48 am 
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Ron, thank you for the suggestion.


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 Post subject: Re: Roaring 20s Superhets
PostPosted: Feb Sat 10, 2018 8:22 am 
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Location: Radio Heaven, North Carolina, near Charlotte, 28106-3015
David Willenborg wrote:
Ron, thank you for the suggestion.



You're welcome David, glad to try to help.
If you try it, use a good bit of Goop or GoJo to keep the
panel lubricated, and don't bare down too hard on the 0000
steelwool, just let the weight of you hand press it down.

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 Post subject: Re: Roaring 20s Superhets
PostPosted: Feb Sat 10, 2018 2:19 pm 
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Location: Carmel, Indiana
That's just mineral buildup on that bakelite panel. I suggest using Meguiar's car polish. You should be able to get it at any auto parts store.

Image
http://www.meguiars.com/en/automotive/p ... -compound/

Once your finished, go over it with a high quality car wax and that panel will look like glass.

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 Post subject: Re: Roaring 20s Superhets
PostPosted: Feb Sat 10, 2018 4:00 pm 
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Location: Hollywood, Maryland
My regular go to is 3M Clear Coat Polishing Compound. This panel looks to have been exposed to water, and that can destroy the outside shiny layer of Bakelite. The volume control knob set screw had rusted away and I had to crush the knob with pliers to get it off. The volume control shaft is also badly corroded. I will do my best to clean the panel up. The chassis panel will clean up like new. Thanks.

David


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 Post subject: Re: Roaring 20s Superhets
PostPosted: Feb Sat 10, 2018 5:41 pm 
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Location: Central VA, 23005
Indiana Radios wrote:
That's just mineral buildup on that bakelite panel. I suggest using Meguiar's car polish. You should be able to get it at any auto parts store.

Image
http://www.meguiars.com/en/automotive/p ... -compound/

Once your finished, go over it with a high quality car wax and that panel will look like glass.

+1


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 Post subject: Re: Roaring 20s Superhets
PostPosted: Feb Tue 13, 2018 5:46 am 
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Posts: 188
Location: Phoenix, AZ
This Roaring 20s Superhets thread seems to have gotten a bit quiet recently. I find it a fascinating thread and a valuable resource, so I thought I'd post a couple images to maybe move things along a bit. I acquired this set about 15 years ago ... it's a Pressley superhet from around 1924-25, described in the December 1924 issue of Popular Radio magazine. The cabinet is relatively small compared to most superhets of that time, and the front panel is nothing special to look at, but the seven BBT '01As do look nice under the lid.
R/ John


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Pressley superhet 1.jpg
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 Post subject: Re: Roaring 20s Superhets
PostPosted: Feb Tue 13, 2018 8:15 pm 
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Location: Utah 84065
Great looking Pressley!
The BBT tubes look great also.
Were those tubes in the set when you acquired it?

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 Post subject: Re: Roaring 20s Superhets
PostPosted: Feb Tue 13, 2018 8:30 pm 
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Location: Phoenix, AZ
Yes, the BBTs were in it when I acquired it.
R/ John


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 Post subject: Re: Roaring 20s Superhets
PostPosted: Feb Sat 17, 2018 1:50 am 
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Joined: Jun Wed 21, 2006 1:56 am
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Location: Katy, Texas
I wonder if we can make an effort restore the lost images? If any of you contributors can load the images onto this site and restore the post it would be very much appreciated! This thread should them be archived.

I've got a couple sets to load ... neither have been posted before and one is a brand that must be quite rare so stay tuned. Should be able to do it sometime in march.

How's that for a teaser :)

Steve


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 Post subject: Re: Roaring 20s Superhets
PostPosted: Feb Sat 17, 2018 4:50 am 
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Location: Carmel, Indiana
This is the only superhet I picked up last year. It's a custom made set based on the Leutz C-7 superheterodyne design. On the front panel is inscribed "C. E. Hallan, Chicago, C-7" and the set uses Acratune dials and knobs. I don't know if C. E. Hallen was the builder of this set or a customer who purchased this set. If Mr. Hallen didn't build this set then, I figure, it was built by some independent outfit located somewhere in Chicago. With the high ratio geared tuning dials, the two vernier knobs arn't necessary to have. As with almost all of my 1920s superhets, I've substituted the 1st. detector UX-201A tube with a UX-112A tube with wonderful results, especially with those superhets that incorporate some sort of regeneration at the front end. DX sensitivity wise, it's like adding a RF stage to the receiver. This receiver can run on either an aerial or a loop antenna by the means of a small tap switch located at the upper left corner of the front panel. There's an extra connector post to the power supply post strip along the right edge of the panel and this is so that -16 volts can be used as grid voltage when a UX-271A tube is used in the final output stage.

Image

Image

Below are photos from the Estes web site showing what this receiver looked like at the January 2017 Estes auction.

Image

Image

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 Post subject: Re: Roaring 20s Superhets
PostPosted: Feb Sat 17, 2018 3:30 pm 
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otherzenithguy wrote:
Thanks Rick for the Rubicon ad. I removed one of the IF's to see if you guys can identify them. No evidence of a label on them that I can see. The bottom unscrews. The bottom does have in small lettering molded in pat pend and type ht..Barry


A very late response, those are Pink-A-Tone IF's.

R,

David


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 Post subject: Re: Roaring 20s Superhets
PostPosted: Feb Sat 17, 2018 8:19 pm 
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Location: Utah 84065
Steve: I can't wait to see your new superhets! You shouldn't tease an old man like this!

Michael: Excellent restoration job on the Leutz C7! I wish I had your skills.

David: There must be a connection between Pink-A-Tone and Radio Service Laboratories. I suspect the Pink-A-Tone transformers you purchased may have been made by Radio Service Laboratories, but identified with the Pink-A-Tone label. Here is the link to the page that you referenced above (with the quote from otherzenithguy), Read down the thread farther to see the connection with Radio Service Laboratories:

viewtopic.php?f=1&t=111490&start=860

My Wilson superhet seems to have the same type of IF transformer, but the transformers in my Wilson are not identified. I for one am somewhat confused. I hope someone can clarify the connection between Pink-A-Tone and Radio Service Laboratories.

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 Post subject: Re: Roaring 20s Superhets
PostPosted: Feb Sun 18, 2018 1:27 am 
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Here is a picture of the Pink-A-Tone transformers and boxes. Today I have restored some of my missing pictures on this thread, and added a couple more. I hope others will also try to restore their pictures. Duane did you download Dale's pictures before the link was broken?


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 Post subject: Re: Roaring 20s Superhets
PostPosted: Feb Sun 18, 2018 6:39 pm 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Utah 84065
David Willenborg wrote:
Duane did you download Dale's pictures before the link was broken?


I copied some of Dale's superhet photos, including these:

1. Ottacrat, from page 1 of the Roaring 20s superhets thread
2. Framingham (parts and documentatiom) from page 2
3. Savastano (and parts from Dale's "Barry" Receptrad), from page 3
4. Lavoy Novodyne (Remler IF's), from page 7
5. American (not Dale's radio), from page 17
6. Unknown with 3 main tuning dials (not Dale's radio), from page 18
7. Microdyne, from page 30

I would not be able to restore these photos to the thread, of coarse.

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 Post subject: Re: Roaring 20s Superhets
PostPosted: Feb Sun 18, 2018 11:11 pm 
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Can the admin do it?

DW


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 Post subject: Re: Roaring 20s Superhets
PostPosted: Feb Mon 19, 2018 3:07 am 
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Location: Utah 84065
Here are some photos of my latest superhet (purchased 9 months ago).
It is the only super I own that has windows in the front panel for viewing the brightness of the tubes.

Image

Here is an inside view. The IF amplifier is enclosed in a copper shield.

Image

A view of the IF transformers, made with Giblin-Remler duo-lateral coils. I call the set a Giblin-Remler because the oscillator coupler and the IF amplifier are made with Giblin-Remler coils.

Image

And finally, a close-up of the engraved panel.

Image

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 Post subject: Re: Roaring 20s Superhets
PostPosted: Mar Sun 04, 2018 3:03 am 
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Posts: 884
Location: Katy, Texas
Here is a Superhet I picked up Last month at the HVRA convention. This is an AE Hill Super-Hilco-Dyne. Searching the internet indicates that the coil / capacitor set was introduced in 1924. This one has a pre-engraved panel indicating it was "Built By AC Chamberlin". I assume AC Chamberlin was a set constructor and I assume a "re seller" trying and bypass patent laws. It has "Hilco Radio" Coils / transformers / fixed capacitors", Hammarlund Variable Condensors, and General Radio Audios. It also contains spring cushioned UV tube sockets.

Other than I can find no other example of an existing AE Hill superhet on the internet this one is a bit unique in that it as a Two Band set. Sometime in 1925 AE Hill seems to begin making a "shortwave coupler" and this set has both the Standard (long wave) and Shortwave couple that is switchable. How well this works I have my doubts about, but that make this the earliest radio I have run across or know of that at least claims to cover up to 15 meters.

This particular radio has had what was most likely a Weston 301 removed and replace by an incorrect meter. Also, this radio has a veneered and finished base. It was installed in a long lost cabinet at one time.

Here it is in all its dusty "before" glory. Should be a fun "preservation" project.

Steve


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shortwave.jpg
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1925ad.jpg
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 Post subject: Re: Roaring 20s Superhets
PostPosted: Mar Sun 04, 2018 4:23 pm 
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Location: Utah 84065
Interesting looking "Super Hilco-Dyne!" I have never seen another superhet using the Hilco parts. Thanks for posting the photos.

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 Post subject: Re: Roaring 20s Superhets
PostPosted: Mar Sun 04, 2018 4:28 pm 
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Joined: Jun Wed 21, 2006 1:56 am
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Location: Katy, Texas
1924 ad from December, Radio in the Home.

Steve


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