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Old 30th Jun 2020, 12:01 pm   #1
Peter73
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Default Beethoven 4 valve set, Identified as a model 99.

Does anyone have any info' on this radio, I have drawn a blank so far.
The valve lineup is: PENA4, VP4B, 345V and an unidentified four pin rectifier.
I'm guessing that it dates from the late 1920's
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Old 30th Jun 2020, 12:04 pm   #2
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Default Re: Beethoven 4 valve set

Beethoven radios often had a model/serial number stamped on the rear of the chassis where the aerial sockets are.
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Old 30th Jun 2020, 12:49 pm   #3
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Default Re: Beethoven 4 valve set

Unfortunately there is nothing stamped on the chassis anywhere.
There is evidence of an ID plate having been removed just below a Mullard copyright plate on the inside of the cabinet.
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Old 30th Jun 2020, 12:55 pm   #4
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Default Re: Beethoven 4 valve set

Interesting frame aerial.

I assume this is a mains powered TRF set?
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Old 30th Jun 2020, 12:59 pm   #5
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Default Re: Beethoven 4 valve set

Yes it would appear to be.
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Old 30th Jun 2020, 3:08 pm   #6
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Default Re: Beethoven 4 valve set

That sort of dial would place it around 1933/34.
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Old 30th Jun 2020, 4:36 pm   #7
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Default Re: Beethoven 4 valve set

Yes, not likely to be earlier than about 1933. Droitwich opened in 1934, but the frequency would have been announced in advance and manufacturers would have labelled their dials accordingly.

At some time Beethoven switched from TRF to superhets. My own model 64 is a TRF and I believe "Radio Radio" shows a slightly later numbered model which was a superhet. The model shown would probably have had a lower model number than that.

EDIT. I just had a look at the circuit for model 77 which is a mains superhet.
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Old 30th Jun 2020, 4:57 pm   #8
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Default Re: Beethoven 4 valve set

Only similar sets listed in the Mullard Valve Replacement guide are:
AC78 : VP4 or VP4A (7 pin), 354V, PENA4, IW3
AC99 : VP4 (7 pin), 354V, PENA4, IW4/350
283 : AC/VP1, 354V, PENA4 (7 pin), IW4/350

If model 77 is the same as AC77 this is must be a superhet as has a FC4 in the list of valves.
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Old 30th Jun 2020, 5:25 pm   #9
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Default Re: Beethoven 4 valve set

Quote:
Originally Posted by Gridiron View Post
If model 77 is the same as AC77 this is must be a superhet as has a FC4 in the list of valves.

Mike.
Radio Museum have a picture of a 77, but none of an AC77. I don't know whether they're the same set.
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Old 1st Jul 2020, 10:42 am   #10
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Default Re: Beethoven 4 valve set

Thanks for your input gentlemen, I will keep looking.
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Old Yesterday, 2:55 pm   #11
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Default Re: Beethoven 4 valve set

Apologies gents, I should have gone to Specsavers ! How I missed the numbers on the Gram socket panel I really don't know.
99/4333 does this help?
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Old Yesterday, 3:01 pm   #12
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Default Re: Beethoven 4 valve set

Beethoven model 99 serial No. 4333.

That probably doesn't get you any further than a positive ID though.
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Old Yesterday, 4:08 pm   #13
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Default Re: Beethoven 4 valve set

Something odd to me about this receiver, cabinet front doesn't look right, another receiver planted in the cabinet? Different chassis but similar tuning scale and loudspeaker bars in this one:

https://www.radiomuseum.org/r/beetho...per_minor.html

Lawrence.

Last edited by ms660; Yesterday at 4:28 pm. Reason: Revised and link added
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Old Yesterday, 5:37 pm   #14
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Default Re: Beethoven 4 valve set

Here is another one: https://www.the-saleroom.com/en-gb/a...8-abeb0126de64
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Old Yesterday, 5:45 pm   #15
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Default Re: Beethoven 4 valve set

That's my theory out the window then.

Lawrence.
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Old Yesterday, 5:45 pm   #16
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Default Re: Beethoven 4 valve set

Looks like the mains transformer in the OP's set is a replacement.
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Old Yesterday, 7:16 pm   #17
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Default Re: Beethoven 4 valve set

Quote:
Originally Posted by ms660 View Post
That's my theory out the window then.

Lawrence.
Your theory could be close, maybe Beethoven ordered a load of cabinets and the chassis didn't fit so they reworked by slapping an outer panel on the front.
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Old Today, 2:14 pm   #18
Peter73
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Default Re: Beethoven 4 valve set, Identified as a model 99.

Thanks very much PJL for identifying my set, much appreciated.
Pete.
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