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Success Stories If you have successfully repaired or restored a piece of equipment, why not write up what you did and post details here. Particularly if it was interesting, unusual or challenging. PLEASE DO NOT POST REQUESTS FOR HELP HERE!

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Old 5th Mar 2021, 11:26 am   #1
vinrads
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Default It's nice when a plan comes together.

I had this idea of building a speaker/ power supply for a Telefunken three valve set, the power supply consists of an LT TX for the 4 volt heaters regulated, a 9 volt neg adjustable for the o/p valve grid bias, and HT 120 volt full wave smoothed. the pot on top of the chassis is for adjusting the HT on the detector for best results surprising how low it is around 30 volts. the o/p TX was kindly supplied by Chris (Herald) .
The case was made from a sheet of aluminium, grill all cut out by hand, the lid on the power pack was from a Gecophone purchased from eBay just the case, no innards, I had to reduce it in length, the bottom was made from scratch, an octal socket was fitted on the rear. I am very pleased with the end results. It is just as I envisaged. Mick.
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Last edited by vinrads; 5th Mar 2021 at 11:52 am.
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Old 5th Mar 2021, 11:50 am   #2
paulsherwin
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Default Re: It's nice when a plan comes together.

Very nice job Mick.
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Old 5th Mar 2021, 12:49 pm   #3
Uncle Bulgaria
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Default Re: It's nice when a plan comes together.

That's very smart! A particularly good job on getting it to look the part.
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Old 5th Mar 2021, 2:41 pm   #4
Petedox
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Default Re: It's nice when a plan comes together.

Well done Mick. I find it hard to keep up with all your projects!
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Old 5th Mar 2021, 6:48 pm   #5
wd40addict
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Default Re: It's nice when a plan comes together.

Also marketed by GEC:

https://www.radiomuseum.org/r/genera...r_3_model.html

Advert claims 'made in England', hmm...
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Old 5th Mar 2021, 7:15 pm   #6
vinrads
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Default Re: It's nice when a plan comes together.

It could well be under licence , the case on the Gec one is 8. 3/4 " long where as the Telefunken one is 7.1/4" must have a different paxolin chassis . Thanks for the positive comments Mick.
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Old 11th Mar 2021, 1:45 am   #7
FStephenMasek
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Default Re: It's nice when a plan comes together.

Very nicely done! How well does that radio work?
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Old 11th Mar 2021, 6:06 am   #8
Gabe001
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Default Re: It's nice when a plan comes together.

Nice job Mick, looks great

Ps, particularly enjoyed the title from the "A-team" too
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Old 11th Mar 2021, 8:05 am   #9
vinrads
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Default Re: It's nice when a plan comes together.

Quote:
Originally Posted by FStephenMasek View Post
Very nicely done! How well does that radio work?
Hi Stephen How does it perform ? well for a trf it's quite well behaved you do need a good aerial , I think one of the valves is a bit low, if I change the first two valves around that is the detector and first af amp I works better one way round than the other ,I don't have another valve, plus they are very expensive ,It may look like there are no tuning coils they are under the paxolin chassis laying flat .
Thanks all for the positive comments. Mick.
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