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Old 13th Dec 2018, 8:33 am   #1
FIXITNOW
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Default Early Oak Boxed radio ID please

picked this up yesterday can any one id please
Early Oak Boxed radio ID please
3 valve battery
Basic parts list from what I can see
Radogrand Telsen transformer Ratio 3-1 LF Transformer
Radogrand Telsen transformer Ratio 5-1
Variable selectivity aerial coil

Valves from all I can see

1 marked2D2
Other only marking “300”
Both show made in Austria ?

Other no markings
the Ebonite pane has a box engraved type panel see first image
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Old 13th Dec 2018, 8:34 am   #2
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Default Re: Early Oak Boxed radio ID please

I guess home made but either kit or mag project can anyone id please
more pictures
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Old 13th Dec 2018, 8:35 am   #3
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Default Re: Early Oak Boxed radio ID please

and a few more
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Old 13th Dec 2018, 9:20 am   #4
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Default Re: Early Oak Boxed radio ID please

First thought was a Graves but not sure,possibly homebrew?
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Old 13th Dec 2018, 10:13 am   #5
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Default Re: Early Oak Boxed radio ID please

I do not think it was a kit
I was thinking more of a magazine of the time and hoping it rang a bell with someone
but the patterning of the Ebonite is unusual as most was smooth and may ring a bell with someone
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Old 13th Dec 2018, 11:29 am   #6
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Default Re: Early Oak Boxed radio ID please

The filament bulb in its holder is a surprise, and it's not near the front panel so the light is wasted, not even recycled as a pilot.

David
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Old 13th Dec 2018, 11:32 am   #7
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Default Re: Early Oak Boxed radio ID please

Quote:
Originally Posted by Radio Wrangler View Post
The filament bulb in its holder is a surprise, and it's not near the front panel so the light is wasted, not even recycled as a pilot.

David

I think it is a HT fuse bulb
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Old 13th Dec 2018, 12:42 pm   #8
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Default Re: Early Oak Boxed radio ID please

Built-in lamp limiter. Would have saved a lot of more recent valve equipment from major damage.

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Old 13th Dec 2018, 3:10 pm   #9
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Default Re: Early Oak Boxed radio ID please

Almost certainly a Cossor Melody Maker kit, of which there were several from 1927 - 32. It

These links will help:

https://cossor.com/

http://www.cossor.co.uk/the-early-kit-sets

There was an advantage in building such sets from kits for a while, in that they were I believe, exempt from the BBC Royalty fee, and back in those days, the average householder still had a connection between their brain and their hands, so were able to put things together and take them apart. Hence, building such a kit posed few problems, so was an enjoyable and cost effective activity.
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Old 13th Dec 2018, 3:20 pm   #10
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Default Re: Early Oak Boxed radio ID please

having looked at them they all seem to use Cossor made parts
but in this set all parts are made by Telsen
but will down load circuits and compare
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Old 13th Dec 2018, 3:31 pm   #11
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Default Re: Early Oak Boxed radio ID please

Quite probably started out as a kit, the two rheostats suggest it may have originally been a 2 valve set from the mid-20's. It's very common to find commercially made mid 20's sets that in the late 20's early 30's were gutted and rewired with more recent components or even converted to jewellery box or similar.

I have a tatty large up-market solid oak radio box with lid and doors. It has a 4 valve radio in it of pretty poor construction using seemingly random parts that are slightly earlier than yours. Not sure what to do with it as the valves in it are from 1926/27 and are mixed filament voltage. Restoring it doesn't make much sense as the constructor would have been a complete amateur with limited knowledge and experience.

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Old 13th Dec 2018, 3:42 pm   #12
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Default Re: Early Oak Boxed radio ID please

It looks home made. You could buy all the parts and the cabinet separately or as a kit.
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Old 13th Dec 2018, 3:49 pm   #13
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Default Re: Early Oak Boxed radio ID please

Quote:
Originally Posted by crackle View Post
It looks home made. You could buy all the parts and the cabinet separately or as a kit.

Agreed
I was hoping it was from a magazine of the time and someone would possible know which one
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Old 13th Dec 2018, 4:43 pm   #14
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Default Re: Early Oak Boxed radio ID please

Quote:
the average householder still had a connection between their brain and their hands
Well said, we were looking for a "maker person" at work, plumped upon a delightful Romanian man who uses tools like a lacemaker. Back on topic, there is a lovely set of photographs with descriptions about a man making a Brown kit radio in "The Setmakers", shows your ordinary (well paid I suspect) office type making it.
 
Old 13th Dec 2018, 8:05 pm   #15
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Default Re: Early Oak Boxed radio ID please

I don't think it's Cossor related at all.

The front end at least doesn't resemble any of the front ends in any of those Cossor circuits.

Note the use of a differential capacitor in the photo's for the reaction control, the front end circuit could well be based on that used in some of the Telsen designs such as the Conqueror 3 which uses a differential capacitor and what appears to be the same variable selectivity antenna coil and the three point wave change switch:

https://www.americanradiohistory.com...iomag_No.1.pdf

The receiver looks like a re-hashed bitsa, no two knobs look alike, the innards isn't very well constructed.

The cabinet looks as though it was designed to take a full width terminal panel, Peto Scott were a popular supplier of cabinets.

Lawrence.

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Old 13th Dec 2018, 8:59 pm   #16
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Default Re: Early Oak Boxed radio ID please

Hi, Telsen produced "The Telsen Radiomag", about 6 editions in the mid/late 20's.
I think these are online somewhere, but they detailed many sets like this as well as selling the parts by post. I think it is most likely one of theirs.
The mags, as well as circuits showed the full range of parts they supplied, including fusebulbs and holders.

Ed
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Old 14th Dec 2018, 10:20 am   #17
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Default Re: Early Oak Boxed radio ID please

Thanks guys, yes looks to be based on the Conqueror 3 and is a good starting point/option to become this version
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Old 14th Dec 2018, 10:59 am   #18
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Default Re: Early Oak Boxed radio ID please

Telsen Radiomag, link to the six editions:

https://www.americanradiohistory.com/Telsen.htm

Lawrence.
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Old 14th Dec 2018, 8:57 pm   #19
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Default Re: Early Oak Boxed radio ID please

Fascinating magazines and well spotted - what a wonderful resource the America Radio History site is!

What always strikes me is just how very expensive everything was back then, when indexed to today's prices. In issue 2 of the magazine, the price list of components for the 'Empire 4' four valve receiver tots up to £4.7s.3d. When adjusted for inflation, that amounts to £292 in 2018, but of course, that's just the start of it. The price list doesn't include the four valves at £1.00 each (2018 = £260 for the four), so we're already up to £552 - the price of a 40" 'smart' TV or a half decent laptop. Then there's a 2V accumulator to buy, HT battery, headphones/speaker.

All in all, a rich man's game in an era when few families had any disposable discretionary income, especially during the 1930s depression years.

Despite that, such sets and components appear with regularity at swapmeets and BVWS Auctions, but never seem to attain high prices. Despite the appeal which they may have to us, with their neat breadboard layouts, maybe the low prices are because they look rather more like scientific instruments than radios, so not very attractive to have on display in say a living room, where - as often as not - they'd be deemed to be 'dust traps' by others members of the household. That's a point I'd have to concede, but they don't look half as interesting if housed in a cabinet.

I have a replica 'Unadyne' one valve radio which were sold in kit form in Australia in the 1950s, consisting of vintage components and valves. I have maybe forty radios on display around the house, mostly on shelves in a small dressing room. A while ago, I noticed it was missing and asked my wife if she knew where it was. She said "yes - it's in the loft - it's been there at least a year, so it's gathering dust up there - not down here". She has a point - it's really just an interesting item (AKA 'dust trap') from the 1950s from the antipodes.
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