Help identifying 1920s TX. please? - UK Vintage Radio Repair and Restoration Discussion Forum

x72 · 27th Mar 2008, 7:20 pm

I acquired this:
http://radioshop.co.uk/vintage.radio...dingbridge_tx/ recently and have been trying to work out exactly what it is. I have dated some parts and it appears to be a transmitter from 1919-1921 but that's about as far as I have got.

Does anyone here have any thoughts on it? or maybe pictures of something similar?

Regards,
Graham

XTC · 27th Mar 2008, 9:43 pm

Have you tried the Marconi Museum in Oxford?

http://www.mhs.ox.ac.uk/marconi/

Pete

x72 · 7th Apr 2008, 6:45 pm

Thanks, Pete. I have talked to someone associated with the Marconi Collection who helped to date some of the components.

I have updated the web page to include the dimensions of the rings that may have held a valve:
The two insulated rings, in picture 10 (http://radioshop.co.uk/vintage.radio...main_front.jpg), are ~33mm inside diameter and are spaced at about 90mm. The spacing is adjustable. The two larger rings are connected together and are about 93mm inside diameter.

Regards,
Graham

Alan Stepney · 9th Apr 2008, 9:14 am

I dont have any suggestions, but it might be worth contacting someone at Amberley Museum (used to be the Chalk Pits museum) as there radio/electronics section has a lot of early wireless equipment.

The main expert there used to be Ron Ham, but I am 99% sure he is no longer with us.
However, I am sure that they have other experts on that era.

ppppenguin · 9th Apr 2008, 9:34 am

You could try John Narborough at Amberley. curator"...a..t..."milnemuseum=dot=org.uk It's not really his speciality but he has a very wide knowledge and he'll know who to ask. Replace the garbage with @ and . which I've put there to stop spambots harvesting his email address. Don't worry if you don't get a reply for a few days.

(To mods: I hope it's OK to include an email address in this context. In theory it's no different to giving a URL for an organisation which has a list of contact email addresses)

x72 · 13th Apr 2008, 6:56 pm

Thanks both for the Amberley tips. I'll try there.
Regards,
Graham

27th Mar 2008, 7:20 pm	#1
x72 Tetrode Join Date: Sep 2006 Location: Chelmsford, Essex, UK. Posts: 85	Help identifying 1920s TX, please I acquired this: http://radioshop.co.uk/vintage.radio...dingbridge_tx/ recently and have been trying to work out exactly what it is. I have dated some parts and it appears to be a transmitter from 1919-1921 but that's about as far as I have got. Does anyone here have any thoughts on it? or maybe pictures of something similar? Regards, Graham Last edited by x72; 27th Mar 2008 at 7:31 pm. Reason: Typo

27th Mar 2008, 9:43 pm	#2
XTC Retired Dormant Member Join Date: Oct 2004 Location: Bristol, UK. Posts: 837	Re: Help identifying 1920s TX. please? Have you tried the Marconi Museum in Oxford? http://www.mhs.ox.ac.uk/marconi/ Pete

7th Apr 2008, 6:45 pm	#3
x72 Tetrode Join Date: Sep 2006 Location: Chelmsford, Essex, UK. Posts: 85	Re: Help identifying 1920s TX. please? Thanks, Pete. I have talked to someone associated with the Marconi Collection who helped to date some of the components. I have updated the web page to include the dimensions of the rings that may have held a valve: The two insulated rings, in picture 10 (http://radioshop.co.uk/vintage.radio...main_front.jpg), are ~33mm inside diameter and are spaced at about 90mm. The spacing is adjustable. The two larger rings are connected together and are about 93mm inside diameter. Regards, Graham

9th Apr 2008, 9:14 am	#4
Alan Stepney Rest in Peace Join Date: Feb 2008 Location: Dorset, UK. Posts: 947	Re: Help identifying 1920s TX. please? I dont have any suggestions, but it might be worth contacting someone at Amberley Museum (used to be the Chalk Pits museum) as there radio/electronics section has a lot of early wireless equipment. The main expert there used to be Ron Ham, but I am 99% sure he is no longer with us. However, I am sure that they have other experts on that era.

9th Apr 2008, 9:34 am	#5
ppppenguin Retired Dormant Member Join Date: Dec 2003 Location: North London, UK. Posts: 6,168	Re: Help identifying 1920s TX. please? You could try John Narborough at Amberley. curator"...a..t..."milnemuseum=dot=org.uk It's not really his speciality but he has a very wide knowledge and he'll know who to ask. Replace the garbage with @ and . which I've put there to stop spambots harvesting his email address. Don't worry if you don't get a reply for a few days. (To mods: I hope it's OK to include an email address in this context. In theory it's no different to giving a URL for an organisation which has a list of contact email addresses)

13th Apr 2008, 6:56 pm	#6
x72 Tetrode Join Date: Sep 2006 Location: Chelmsford, Essex, UK. Posts: 85	Re: Help identifying 1920s TX. please? Thanks both for the Amberley tips. I'll try there. Regards, Graham