UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Specific Vintage Equipment > Vintage Radio (domestic)

Notices

Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only.

Reply
 
Thread Tools
Old 10th May 2021, 2:57 pm   #1
Beardyman
Hexode
 
Beardyman's Avatar
 
Join Date: Jan 2018
Location: Portsmouth, Hampshire, UK.
Posts: 334
Default Wartime Civilian Receiver.

Had this one on the bench for a while now, looking rather forlorn & tatty. The top is separate, I would think the animal based glue has decomposed somewhat. As far as I can see, someone in its past, decided to give it a coat of dark varnish. It's mostly peeling off as you can see. No sign of the label on top either which kind of bolsters my suspicion that the finish isn't original. Speaker cloth isn't too moth eaten & it may well be possible to salvage it. Looking under the chassis shows the three 8uf caps have, at some point, been replaced with RS dry electrolytic types but a long time ago, haven't seen those grey types since the 70's. Whoever did it made a good job of it too, they may yet reform ok, you never know. One of the valves has lost most of its coating & according to a penciled note on the chassis is a CCH35, close to an ECH35 in every respect apart from filament voltage. This one is a U21 (Philco) & according to the dial was right around 1944. The waxy's are, well, runny. A quick probe around the resistors shows they aren't too far off mostly.The volume control was replaced at some point with a switched one (wrong value too) but they didn't bother to take the toggle switch out of circuit?!? It's going to be interesting as they say!
Attached Thumbnails
Click image for larger version

Name:	20210424_151523.jpg
Views:	210
Size:	122.9 KB
ID:	233719   Click image for larger version

Name:	20210424_151424.jpg
Views:	199
Size:	92.2 KB
ID:	233720   Click image for larger version

Name:	20210424_151216.jpg
Views:	182
Size:	73.3 KB
ID:	233721   Click image for larger version

Name:	20210424_151228.jpg
Views:	188
Size:	66.6 KB
ID:	233722  
__________________
The difference between stupidity and genius is that genius has its limits. (Einstein)
Beardyman is offline   Reply With Quote
Old 11th May 2021, 12:42 am   #2
Glowing Bits!
Octode
 
Glowing Bits!'s Avatar
 
Join Date: Oct 2011
Location: Wrexham, North Wales, UK.
Posts: 1,154
Default Re: Wartime Civilian Receiver.......

According to all the info available, the front end should be ECH35 & EF39.
The shielding flaking off is not good, it may lead to instability, it will be interesting to find out whether it behaves itself or not.
It would also be interesting to find out how the set performs with the CCH35.
__________________
Rick, the annoying object roaming the forum.
Glowing Bits! is offline   Reply With Quote
Old 11th May 2021, 6:54 am   #3
Beardyman
Hexode
 
Beardyman's Avatar
 
Join Date: Jan 2018
Location: Portsmouth, Hampshire, UK.
Posts: 334
Default Re: Wartime Civilian Receiver.......

Hi Glowing Bits!
Luckily I have an ECH35 & EF39 from a salvage job. When the time comes I'll try it with it's original line up of valves then take it from there. Having just finished scraping the old varnish off (messy!) & re-assembling/gluing the cabinet back together (top had become detached, several corner bracing pieces fallen off & the rest decidedly rickety) I'm going to let it stand for a few days until I tackle the chassis. The OPT looks as if it's a generic replacement, the markings look aftermarket. Speaker is in good order though, voice coil not scraping & the cone is intact. Managed to get the cloth off in one piece & gave it a gentle wash, the colour of the water was a sight to behold! Its been left to air dry on a piece of towel in the window of the workshop. We'll see how it's held up at the weekend, I'm hopeful it will survive. As I was scraping the cabinet I heard a muted twang from the chassis on the bench, I looked at it & found the tuning cord had snapped! Luckily it's a relatively simple run. Oh & the 8uf capacitors reformed excellently too. Rather pleased so far......
__________________
The difference between stupidity and genius is that genius has its limits. (Einstein)
Beardyman is offline   Reply With Quote
Old 11th May 2021, 9:26 am   #4
Lloyd 1985
Nonode
 
Lloyd 1985's Avatar
 
Join Date: Jun 2008
Location: Coningsby, Lincolnshire, UK.
Posts: 2,171
Default Re: Wartime Civilian Receiver.

I remember seeing your set for sale about the time I bought mine! I was tempted.. your thread reminded me to have a look at mine last night, it looked like someone had played with it before, but all the waxies were still in place, I gave it a warm up on the lamp limiter, and it came to life! The speaker had its voice coil stuck, but some careful adjustment after loosening the screws got it going, it sounds good!

Best of luck with yours!

Lloyd
Lloyd 1985 is offline   Reply With Quote
Old 11th May 2021, 4:59 pm   #5
Glowing Bits!
Octode
 
Glowing Bits!'s Avatar
 
Join Date: Oct 2011
Location: Wrexham, North Wales, UK.
Posts: 1,154
Default Re: Wartime Civilian Receiver.

The speaker tranny does look as though it has been replaced, almost any speaker tranny can be used in these sets, the primary resistance is not critical.
As for the cabinet, some panel pins may be of use, I had to glue & nail the base on mine, the bottom fell off!
Once you have the set restored, make sure it has a reasonable length of cable for the antenna, it will then perform well.
__________________
Rick, the annoying object roaming the forum.
Glowing Bits! is offline   Reply With Quote
Old 11th May 2021, 9:17 pm   #6
Richard_FM
Octode
 
Richard_FM's Avatar
 
Join Date: Sep 2017
Location: Stockport, Cheshire, UK.
Posts: 1,543
Default Re: Wartime Civilian Receiver.

Good to see another one being restored.

Will you be removing the dark varnish?
__________________
Hello IT: Have you Tried Turning It Off & On Again?
Richard_FM is offline   Reply With Quote
Old 11th May 2021, 10:01 pm   #7
Murphy Maniac
Pentode
 
Murphy Maniac's Avatar
 
Join Date: Aug 2009
Location: Liverpool, Merseyside, UK.
Posts: 241
Default Re: Wartime Civilian Receiver.

Does anyone know whether or not they were varnished when new, or were they just left as plain wood?
__________________
Geoff. (BVWS and Radiophile Member)
Murphy Maniac is offline   Reply With Quote
Old 12th May 2021, 6:37 am   #8
Beardyman
Hexode
 
Beardyman's Avatar
 
Join Date: Jan 2018
Location: Portsmouth, Hampshire, UK.
Posts: 334
Default Re: Wartime Civilian Receiver.

Richard FM:
TBH the dark varnish was so tatty & falling off in places, the only option was to remove it but I've left it in the grooves of the two front upright panels as a mark to its heritage as it were.

Murphy Maniac:
I can find no definite information as to whether they were varnished or left as plain wood, some say they were, others say they weren't. Perhaps this was down to which manufacturer & what was available at the time?

Glowing Bits!:
That at least is good to know! A quick check with the meter showed it was reading roughly what was expected as did the mains transformer, phew!

Lloyd 1985:
Oh boy did you get lucky there! Well done! I've never had much success with adjusting speakers so a definite result there for you.
__________________
The difference between stupidity and genius is that genius has its limits. (Einstein)
Beardyman is offline   Reply With Quote
Old 12th May 2021, 6:30 pm   #9
Glowing Bits!
Octode
 
Glowing Bits!'s Avatar
 
Join Date: Oct 2011
Location: Wrexham, North Wales, UK.
Posts: 1,154
Default Re: Wartime Civilian Receiver.

With regards to the cabinet finish, it would have been either varnished or waxed, some manufacturers may not have finished the cabinet with anything, although most were.
Once the set is up and running, a 10 metre length of cable should give good results, unless the set needs alignment.
Although these sets were designed as cheap as possible, that's very doubtful given how a dropper resistor would have saved a lot of money versus a rather expensive transformer.
__________________
Rick, the annoying object roaming the forum.
Glowing Bits! is offline   Reply With Quote
Old 12th May 2021, 8:03 pm   #10
SeanMcGee
Triode
 
Join Date: Mar 2021
Location: Cambridgeshire, UK.
Posts: 30
Default Re: Wartime Civilian Receiver.

I’ve become a bit obsessed with the Wartime Receiver, (2 so far!) and am looking forward to seeing how yours comes along
SeanMcGee is offline   Reply With Quote
Old 12th May 2021, 8:21 pm   #11
FERNSEH
Dekatron
 
FERNSEH's Avatar
 
Join Date: Mar 2005
Location: Gateshead, Tyne and Wear, UK.
Posts: 6,678
Default Re: Wartime Civilian Receiver.

A special model was made for AC/DC mains. Valves: CCH35, EF39, EBL31 and CY31. A ballast tube type C1 or C1C takes care the current regulation of the heaters.
Same cabinet and chassis metalwork as the AC only sets..

DFWB.
FERNSEH is offline   Reply With Quote
Old 12th May 2021, 8:27 pm   #12
Cobaltblue
Moderator
 
Cobaltblue's Avatar
 
Join Date: Dec 2010
Location: Exeter, Devon and Poole, Dorset UK.
Posts: 4,964
Default Re: Wartime Civilian Receiver.

Quote:
Originally Posted by FERNSEH View Post
A special model was made for AC/DC mains. Valves: CCH35, EF39, EBL31 and CY31. A ballast tube type C1 or C1C takes care the current regulation of the heaters.
Same cabinet and chassis metalwork as the AC only sets..

DFWB.
I have never seen an AC/DC model.

It would be interesting.

Cheers

Mike T
__________________
Don't care if it was a bargain why's it in my kitchen
Mike T BVWS member.
www.cossor.co.uk
Cobaltblue is offline   Reply With Quote
Old 12th May 2021, 8:42 pm   #13
Glowing Bits!
Octode
 
Glowing Bits!'s Avatar
 
Join Date: Oct 2011
Location: Wrexham, North Wales, UK.
Posts: 1,154
Default Re: Wartime Civilian Receiver.

I'm not sure whether I found one on Ebay a few years back, either way, they are not as common.
__________________
Rick, the annoying object roaming the forum.
Glowing Bits! is offline   Reply With Quote
Old 12th May 2021, 8:58 pm   #14
wartime sounds
Triode
 
wartime sounds's Avatar
 
Join Date: Dec 2009
Location: Bristol, UK.
Posts: 45
Default Re: Wartime Civilian Receiver.

Hi Mike,

As has been stated, the ac/dc receiver is certainly a more rarer variant of the Wartime Civilian Receiver. A picture of one can be found on my website listed below. This particular one was made for the British wireless for the blind fund.

Peter
__________________
"Wartime Sounds"
BVWS Member

www.wartimesounds.co.uk
wartime sounds is offline   Reply With Quote
Old 12th May 2021, 9:15 pm   #15
Cobaltblue
Moderator
 
Cobaltblue's Avatar
 
Join Date: Dec 2010
Location: Exeter, Devon and Poole, Dorset UK.
Posts: 4,964
Default Re: Wartime Civilian Receiver.

Thank you for that it's a new one for me

Does it have the usual manufacturer code?

Interesting modifications to stop the live chassis being exposed.

Cheers

Mike T
__________________
Don't care if it was a bargain why's it in my kitchen
Mike T BVWS member.
www.cossor.co.uk
Cobaltblue is offline   Reply With Quote
Old 12th May 2021, 10:21 pm   #16
DangerMan
Heptode
 
Join Date: Jul 2009
Location: Stoke-on-Trent, Staffordshire, UK.
Posts: 711
Default Re: Wartime Civilian Receiver.

Thanks for this, very interesting to see photos of the AC/DC version.. I’d seen mention of it before but have never seen one.

ISTR also seeing a photo and brief description of an American version, complete with RCA logo, which was AC only and used a 6V6 output valve plus (presumably) modifications to make up the lost gain. I think it was in Radiophile magazine, and I don’t think it was April!

Anyone else remember this or know any more about it?

Pete
DangerMan is offline   Reply With Quote
Old 13th May 2021, 7:31 am   #17
Beardyman
Hexode
 
Beardyman's Avatar
 
Join Date: Jan 2018
Location: Portsmouth, Hampshire, UK.
Posts: 334
Default Re: Wartime Civilian Receiver.

Quote:
Originally Posted by Glowing Bits! View Post
Although these sets were designed as cheap as possible, that's very doubtful given how a dropper resistor would have saved a lot of money versus a rather expensive transformer.
I must admit that had me puzzled, makes sense to fit a resistor instead of a thumping great transformer but, after reading about the remit for these sets, there is mention of reliability being a driving force behind the design. These sets were not cheap either. Now, whether a resistor is more or less reliable than a transformer is open to debate, well beyond this thread & definitely off topic.

There's a report from the BBC on this set, makes interesting reading, I get the impression they weren't that taken with it!

Back to the set:
The woodwork shows no signs of the dread woodworm but is extremely dry, almost like its been baked. I've given it a very light sanding & applied some Danish oil to the inside, just to see what happened. As the brush hit the wood it soaked straight in! Danish oil is runny & spreads, normally, very well, not so in this case. The wood soaked it up like a sponge. I'll leave that until the weekend to dry out for now.
Looking around the chassis (after cleaning it up) it all appears to be in remarkably good condition. C13 (25uF/25V) was found to be a resistor in behavior, rather than solder in a tiny modern replacement I took the time to re-stuff the old case, just for the look. I know the chances of it ever being seen by anyone other than me is remote but, well you know!
Then onto the tuning cord, after removing the required tuning scale & pointer I found the drum had been fitted incorrectly, the open side facing inwards. At this point I took the chance to clean & lubricate the relevant rotating parts. More later!
__________________
The difference between stupidity and genius is that genius has its limits. (Einstein)
Beardyman is offline   Reply With Quote
Old 13th May 2021, 8:10 am   #18
Glowing Bits!
Octode
 
Glowing Bits!'s Avatar
 
Join Date: Oct 2011
Location: Wrexham, North Wales, UK.
Posts: 1,154
Default Re: Wartime Civilian Receiver.

The cabinet is made from raw boxwood, no veneer is used to reduce costs hence why it soaks up lots of oil, at least 3 coats are needed to seal it before the real work can begin, I usually apply 7 - 8 coats to achieve a reasonable sheen but not to the point of having a mirror finish.
With regards to other variants, the universal version of this set used a barretter rather than a dropper, a battery version was available too.
__________________
Rick, the annoying object roaming the forum.
Glowing Bits! is offline   Reply With Quote
Old 13th May 2021, 11:59 am   #19
ms660
Dekatron
 
ms660's Avatar
 
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 11,086
Default Re: Wartime Civilian Receiver.

Quote:
Originally Posted by Glowing Bits! View Post
The cabinet is made from raw boxwood, no veneer
It won't be boxwood, probably blockboard with a pine veneer, the pine would most likely have been from home grown sources as would the rest of the timber.

Lawrence.
ms660 is offline   Reply With Quote
Old 13th May 2021, 2:42 pm   #20
Glowing Bits!
Octode
 
Glowing Bits!'s Avatar
 
Join Date: Oct 2011
Location: Wrexham, North Wales, UK.
Posts: 1,154
Default Re: Wartime Civilian Receiver.

I won't argue about the wood itself other than it's not the usual cabinet timber, it ain't heavy enough.
__________________
Rick, the annoying object roaming the forum.
Glowing Bits! is offline   Reply With Quote
Reply

Thread Tools



All times are GMT. The time now is 4:12 am.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Copyright ©2002 - 2021, Paul Stenning.