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PostPosted: Feb Thu 18, 2010 1:22 am 
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Joined: May Thu 07, 2009 10:57 pm
Posts: 143
wbaradio,

Am I to assume the "tuna cans" for the coil have words "UNIT NO." rather than "TYPE"?

There were 5 different cans in the years Madison offered his radios. Your info will help to determine what version.

Although Harry Madison first offered his superhet to the Denver, Colorado radioists in August 1925, Citizens Radio Call Book introduced it to the world with blueprints dated February 19, 1926. It operated at a low 35KC [8575 meters], but was quickly boosted to 92.5.

Beautiful MM. I love that cabinet. You got a deal for $150! Give ya $175. Ha! :roll:

Rick

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 Post subject:
PostPosted: Feb Thu 18, 2010 1:27 am 
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Joined: Jan Mon 18, 2010 2:13 am
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Location: Dayton Ohio
Rick A wrote:
wbaradio,

Am I to assume the "tuna cans" for the coil have words "UNIT NO." rather than "TYPE"?

There were 5 different cans in the years Madison offered his radios. Your info will help to determine what version.

Although Harry Madison first offered his superhet to the Denver, Colorado radioists in August 1925, Citizens Radio Call Book introduced it to the world with blueprints dated February 19, 1926. It operated at a low 35KC [8575 meters], but was quickly boosted to 92.5.

Beautiful MM. I love that cabinet. You got a deal for $150! Give ya $175. Ha! :roll:

Rick


Hello Rick,

You were the one I talked to about my Superhets about a year ago.
its nice to meet you here!
Thanks again for your help!

-Steve
ka8riz


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 Post subject:
PostPosted: Feb Thu 18, 2010 1:42 am 
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Joined: May Thu 07, 2009 10:57 pm
Posts: 143
Steve,

Always a pleasure to talk to you.

Hoping I helped you back then. :?:

R

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 Post subject:
PostPosted: Feb Thu 18, 2010 1:46 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 232
Location: Chesapeake, VA USA
Rick, the tuna cans are marked as follows:

Madison-Moore
Radio Corp'n
Denver, Colo
Type M1

These are marked Type M1 through M5.

Steve, I'll email you the larger size pics per your request....

Thanks,
Britt


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 Post subject:
PostPosted: Feb Thu 18, 2010 7:46 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 560
Location: Eagle Mountain, Utah 84005
Hi Britt,

You have a very nice Madison-Moore superhet! It's probably worth several times what you paid for it. It's a good high-quality professionally built set.

I think the black audio transformer (with a red sticker) is a replacement. It looks like there is some type of oil stain from the original transformer.

Thanks for sharing.

Duane

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 Post subject:
PostPosted: Feb Fri 19, 2010 10:52 pm 
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Posts: 143
Britt,

Tracking the evolution of the Madison Moore receivers has not been easy.

I believe, the first IF "tuna cans" had UNIT NO. on the small metal label until the first part of 1926 when they used the word TYPE until late 1927, with two exceptions when they didn't use the metal labels. The cans with the word TYPE should have been tuned to 92.5 KC rather than the earlier 35 KC. After late 1926, they promoted their high frequency 490 KC "Type HW" transformers.

The second clue is in the use of 201As with the nickeled cans. By late 1926, MM hade two sets of cans. One was like yours but were used in association with 199s. The other was a can with a dark band around it and the rest showing nickeled edges. They were specifically for 201A usage.

Because your set was obviously laid out with 201As and had the all-nickeled tuna cans, I place your set from early 1926 to late 1926.

Now, I'd love for anyone to add their "history" of Madison Moore to this forum, please. Duane??? Dale??? Alan??? HELP! :shock:

Rick

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 Post subject:
PostPosted: Feb Sat 20, 2010 6:12 am 
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Posts: 560
Location: Eagle Mountain, Utah 84005
The 199s and 201As have different interelectrode capacitances, amplification factors, plate resistances, etc. However, the various differences between the two types of tubes are probably insignificant compared to the contants of a low-frequency IF transformer.

Did M-M actually make two different transformers for the different types of tubes, or did they just package the same transformer differently? I suspect the latter. I've read about some companies claiming their transformers worked with either 199s or 201As.

The Remler transformers are a good example. You see Remler transformers used with 199s or 201As all the time.

Duane

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 Post subject:
PostPosted: Feb Sun 21, 2010 4:44 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 4989
.

I don't know this will cast much light on the Madison Moore Transformers subject but thought I'd post a sacanned
MM ad from September 1927 that shows the Type "AC" transformers for AC powered sets as well as the more
conventional "HW" units.

Image


A closer look:

ImageImage

I doubt this adds much (if anything) to the discussion but thought some readers might like to see an advertisement
and pictures of some of the transformers being discussed.

.


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 Post subject:
PostPosted: Mar Fri 12, 2010 6:08 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 497
Location: AUSTRALIA
A few more "Hotspot 14" pics.

http://www.shlrc.mq.edu.au/~robinson/In ... HRSA1s.jpg
http://www.shlrc.mq.edu.au/~robinson/In ... HRSA2s.jpg
http://www.shlrc.mq.edu.au/~robinson/In ... HRSA3s.jpg


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 Post subject:
PostPosted: Mar Sat 13, 2010 5:03 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 560
Location: Eagle Mountain, Utah 84005
Thanks for the Hotspot Fourteen links golfguru. Here is a link to a little more info on that same set from Antique Radio Classified:

http://www.antiqueradio.com/Dec02_Begbi ... Radio.html

You must know the gent who owns this set?

Duane

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 Post subject:
PostPosted: Mar Sat 13, 2010 8:17 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 497
Location: AUSTRALIA
Quote:
You must know the gent who owns this set?


Not really - probably a few states to the south of me.

I have seen that ARF article before and did not make the connection. Hope my links were not "old news". :oops:


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 Post subject:
PostPosted: Jun Fri 04, 2010 1:14 pm 
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Posts: 965
There's a very nice looking Leutz C-7 in the Babcock collection to be auctioned at the Rochester AWA meet in August.
Image


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 Post subject:
PostPosted: Jun Sat 05, 2010 12:53 am 
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Location: LONG BEACH CA.( 90808}
ImageImagehere is one a good friend made for me JewelImage I MADE THE LOOP ANT.

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 Post subject:
PostPosted: Jun Sat 05, 2010 4:31 pm 
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Posts: 560
Location: Eagle Mountain, Utah 84005
Ted, thanks for the heads up on the Leutz C-7. It looks very nice, and I'm tempted to make the trip from Utah to New York to bid on it! It looks like there are possibly a few more 20s superhets in the Babcock auction; an Ultradyne L-1 and some type of Remler.

Jewel, that's a great looking superhet! What do the words say on the front panel?

Duane

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 Post subject:
PostPosted: Jun Sat 05, 2010 5:22 pm 
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Joined: Mar Wed 24, 2010 1:08 am
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Location: LONG BEACH CA.( 90808}
it says REMLER 8 TUBE SUPERHET IT ALSO HAS REMLER ON THE VOLT GAUGE Jewel

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 Post subject:
PostPosted: Aug Fri 20, 2010 6:30 pm 
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Location: Carmel, Indiana
I got this flier off of ebay a couple of months ago and thought I'd share it. I know of one example that does exist in a collection in Madison, Wis.

Image

Image

Image

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Last edited by Indiana Radios on Nov Sat 05, 2011 11:54 pm, edited 1 time in total.

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 Post subject:
PostPosted: Sep Fri 17, 2010 9:16 pm 
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Joined: May Mon 17, 2010 4:20 pm
Posts: 26
Location: buenos aires, argentina
From Argentina, here goes my only super..

[img]
http://foto.mercadofotos.com/orduna555/zdf/DSC00342.JPG
http://foto.mercadofotos.com/orduna555/zdf/DSC00345.JPG
http://foto.mercadofotos.com/orduna555/zdf/DSC00348.JPG
http://foto.mercadofotos.com/orduna555/zdf/DSC00352.JPG
http://foto.mercadofotos.com/orduna555/zdf/DSC00353.JPG
http://foto.mercadofotos.com/orduna555/zdf/DSC00354.JPG
[/img][/code]


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 Post subject:
PostPosted: Sep Sat 18, 2010 12:03 am 
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Location: Mission Viejo, southern California
That Tholen Special is yet another fine example of the fascinating innovation and competition of that era. My impression is that these are all expensive radios, mostly for serious collectors. What do such radios cost these days?

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 Post subject:
PostPosted: Sep Mon 20, 2010 5:13 am 
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Joined: May Thu 07, 2009 10:57 pm
Posts: 143
Welcome, orduna from Argentina!

Always glad to have new members to this antique superhet forum.

Really interesting "American Radio Manufacturing Company" superhet you're showing us.

May be your first, but I know it won't be your last...

Please, leave us here in the USA a few old radios! :oops:

Rick

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 Post subject:
PostPosted: Sep Mon 20, 2010 5:58 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 4989
.


I took the liberty of re-sizing and re-linking the pictures in Orduna's post. I agree with Rick A - - a very nice Superhet.

Rick A (also) wrote:

Quote:
Really interesting "American Radio Manufacturing Company" superhet you're showing us.


I suppose from Rick's reference "American Radio Manufacturing Company" must be who produced the IF transformers - -
a new one to me - - I'd not seen any of this brand previously.


Image

Image

Image

Image

Image

Image

Image


Here are a couple of photo sections I extracted so we might better see the transformers:

Image


The audio transformers look a bit like they could be Ferranti.

Image




I very nice Superhet indeed - - - congratulations Orduna - - - - as Rick A wrote,
Quote:
(It) May be your first, but I know it won't be your last...



.


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