Ducastel DAHG 125 (225) 1936

 

Pictures of the original condition (above):

A long term project, started in Spring 2001, was the restauration of a French Ducastel radio from 1936. Regarding the tube complement it must be a model DAHG 125 or DAHG 225.

10 months and a couple of working hours later (below):

The Ducastel's tube complement consists of:

80 Rectifier
6A7 1st Detector, Oscillator
6D6 I.F.
75 2nd Detector and A.V.C.
42 Power Amplifier

So it is obviously an American Design, using American pre-Octal tubes!

Condition of the radio's chassis was very bad, very rusty, and nothing would work. In place of the type 75 tube an ABC1 was installed. I had a lot to do. I cleaned the chassis from all rust and made all the tuning mechanics workable. The large power supply capacitors sitting on the chassis were not reliable to me. So I opened the cans and replaced the old content with new electrolytic caps. I have partially rewired the radio and replaced all capacitors and all resistors.

A look under the chassis.

A view from the backside, tube shields removed.

The chassis, free from components except the R.F. coils.

Transformer and variable capacitor.

Parts of the tuning mechanism.

The PS caps' cans with new electrolytics ready to fill.

Surprise: after finishing the restauration the radio started immediately to work. I did a fine tuning, replaced the grid cable of the 75 with a shielded cable. I'm really satisfied with this job. The Ducastel is now receiving on all 3 bands, and working really good on standard broadcast. 

The wooden case was sanded and got a new painting. One of the original knobs was missing and it was impossible to get an identical spare knob. But at Fairradio I found black knobs with a design close enough so I decided to take 3 new ones.

Now the radio is back in daily service. Photos of the finished job:

I've found a schematic of a Ducastel radio from 1937. This has the newer Octal tubes, but it is very similar to the older model with UX-base tubes: Ducastel_302 (124k)

 

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Last update: 24/February/2002