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GEC BT5147 Revisited
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February 5, 2017
6:18 pm
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PYE625
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As they often show repeats on television, here is a repeat of an actual television instead.

I fired her up today after not being used since last May and I am pleased to report no faults. (Rather boring I know, sorry).

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Here is last years main thread....

http://www.forum.radios-tv.co......38;t=13096

Andrew, a Fenland fanatic.                                                                                     

                         

February 5, 2017
7:01 pm
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nuvistor
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That's a very impressive picture, how old is the set, 60 years or thereabouts?

Frank

February 5, 2017
7:07 pm
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PYE625
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Thanks Frank, yes it's over 60 by now assuming it was made in '53 or '54.

Andrew, a Fenland fanatic.                                                                                     

                         

February 6, 2017
11:21 am
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Cathovisor
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PYE625 said
Thanks Frank, yes it's over 60 by now assuming it was made in '53 or '54.  

5+1+47+(1900)= 1953.

To know yet to think that one does not know is best; not to know yet to think that one knows will lead to difficulty. Lao Tzu
February 6, 2017
11:26 am
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nuvistor
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Cathovisor said

5+1+47+(1900)= 1953.  

Someone has their thinking cap on this morningthumb_gif

Frank

February 6, 2017
3:35 pm
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Till Eulenspiegel
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The GEC BT5147 was the set that established the design philosophy for the following seven years of television production by the original company. In fact certain design features can be found in the 1962 model BT448 which was made after the manufacturing of GEC TVs was taken over by Radio and allied Industries. (Sobell)   A plinth type of Band 3 converter was made available for the BT5147. I seem to remember it was the BT304. These converters appeared for sale at knock down prices in the advertisement pages of the Practical Television magazine.

Till Eulenspiegel.      

February 6, 2017
4:34 pm
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Till Eulenspiegel
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And here is the advert for the plinth type converter, this advert was found in the April 1959 Practical Television.   The IFs are very close to the BREMA figures of 34.64 and 38.15Mc/s.   I bought one of these units in 1960 to convert my Pye FV1 12" TV set.  Like the GEC BT5147 the IFs in the FV1 are close to the later BREMA figures which became the norm from 1955 for almost all 405 line television receivers.  Only a few TV manufactures continued to use the older IFs of 16 and 19.5Mc/s, notably Masteradio. DSC_0194_2.jpgImage Enlarger

Till Eulenspiegel.

February 6, 2017
5:43 pm
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I wouldn't mind one of those plinths to go with my BT5147 hmm_gif

Although I do have a BT1746 which is almost the same as a BT5147 but with built in band III....Note the 3 controls on the side as opposed to 2.

Marc.

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February 6, 2017
8:52 pm
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Till Eulenspiegel
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GEC made their own 14" rectangular CRT, the type 7203A. Unlike the Mullard MW36-24 which has a tetrode gun assembly the GEC has a triode gun, similar to the Brimar C14BM.

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February 6, 2017
10:03 pm
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PYE625
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Till Eulenspiegel said
GEC made their own 14" rectangular CRT, the type 7203A. Unlike the Mullard MW36-24 which has a tetrode gun assembly the GEC has a triode gun, similar to the Brimar C14BM.

Till Eulenspiegel.DSC_0182_4.jpgImage Enlarger

   

Looks a better tube than the MW36-24 fitted in my set..... I'll phone 'em and place an order in the morning.

Andrew, a Fenland fanatic.                                                                                     

                         

February 6, 2017
11:11 pm
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But think carefully before you buy one.  Fourteen pounds fifteen shillings was a lot of money in 1956 and is that purchase tax extra or included in the price?

Till Eulenspiegel.

April 17, 2017
8:19 am
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Last weekend when the weather was really sunny I took a trip to Leek in Staffordshire with a pal of mine for a nose around the Saturday open-air antique market. I'd never visited before and was really quite taken with the place. Lots of nice old buildings, winding streets, covered arcades and also absolutely the best fish & chips I've had for a long while!

In one of the antique shops I spotted a GEC exactly like Andrew's on the sales counter. I was taken aback at how small they are.  Sadly this example was nothing but an empty case with a small fish tank placed inside. Down in the basement amongst the junk I found the chassis and then stumbled across the crt which had been necked. There were a couple of other tv chassis stuffed in a corner too, as well as a large round crt just sitting on a chair ready to be knocked about by the public (eek!) It seems that old sets that come in are routinely stripped out for sale as empty cabinets. There was a nice little early 50s HMV console which had suffered that treatment. Shame! Maybe next time I visit I should leave them my phone number to avoid any more sets being needlessly gutted.

Steve

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