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Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only. |
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15th Jun 2018, 2:58 pm | #41 |
Hexode
Join Date: Nov 2012
Location: Limoges, Haute-Vienne, France.
Posts: 280
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Re: DUCASTEL AC563 no sound
Pic...
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15th Jun 2018, 4:22 pm | #42 |
Dekatron
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 13,454
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Re: DUCASTEL AC563 no sound
You could run it from a suitably rated 115 volt transformer without too much modification, anode of the rectifier connected to 115 volt, perhaps in series with a low value resistor, a couple of 12v 200mA bulbs in series with the valve heater chain connected to 115 volts.
Lawrence. |
16th Jun 2018, 8:58 am | #43 |
Hexode
Join Date: Nov 2012
Location: Limoges, Haute-Vienne, France.
Posts: 280
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Re: DUCASTEL AC563 no sound
Having spoken to Gerry at Crowthorne tubes, and done the appropriate calculations, I'm going to replace the R20N with a 25w bulb.
If anyone sees any pitfalls please let me know! Cheers R |
7th Jul 2018, 1:32 pm | #44 |
Hexode
Join Date: Nov 2012
Location: Limoges, Haute-Vienne, France.
Posts: 280
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Re: DUCASTEL AC563 no sound
Back to the transformer, where can I source something suitable? Not much at RS or Cricklewood...
Cheers R |
21st Jul 2018, 1:26 pm | #45 |
Hexode
Join Date: Nov 2012
Location: Limoges, Haute-Vienne, France.
Posts: 280
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Re: DUCASTEL AC563 no sound
Good reception now...thaks all. Video available on youtube RR |
14th Aug 2018, 1:07 pm | #46 |
Hexode
Join Date: Nov 2012
Location: Limoges, Haute-Vienne, France.
Posts: 280
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Re: DUCASTEL AC563 no sound
Just to draw a line under this one, herewith picture of a beautiful R20N donated by a very kind Jean-Yves from the French site Rétro-Forum.
Merci beaucoup Jean- Yves! Santé R |
14th Aug 2018, 4:40 pm | #47 |
Rest in Peace
Join Date: Mar 2011
Location: Basildon, Essex, UK.
Posts: 4,100
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Re: DUCASTEL AC563 no sound
I was advised that a mains tungsten halogen bulb GU10 type was the best substitute for a baretter, they come in various wattages.
Is that wirewound resistor covered in an asbestos material? Mike |
14th Aug 2018, 5:04 pm | #48 |
Hexode
Join Date: Nov 2012
Location: Limoges, Haute-Vienne, France.
Posts: 280
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Re: DUCASTEL AC563 no sound
Well I never thought of that. Were resistors of this vintage asbestos coated? Maybe I should seal the offending article with PVA or similar?
R |