User talk:Ft93110

Pre-WWII public videophone services
Hello Ft93110:

I would like to improve an article you contributed to on 5th February in, Videophone, where you wrote:
 * "The first public video telephone service was opened by the German Reichspost in 1938 and closed due to the war in 1940. Video telephone lines linked Berlin to Nuremberg, Munich, and Hamburg. The terminals were integrated in public telephone booths and transmitted at the same resolution as the first German TV sets, at 440 lines. The British General Post Office operated another public video telephone service prior to World War II. "

The video telephone service of the Reichspost is well documented, however I have not found any literature or references of the equivalent British video telephone service run by the British General Post Office before the Second World War. Was that something you personally saw in Britain, or did you happen to read about it, and if so, where?

It would be good to mention the British service in detail, but that can only be done if we can cite a written reference to it. If you can point me in the right direction it would be greatly appreciated.

Thanks and best: HarryZilber (talk) 21:01, 25 June 2009 (UTC)


 * Hi Harryzilber,


 * Thanks for your interest. I read about the service in some publications that I now have to find again. To give you a more rapid answer I looked whether I would rapidly find the source via the Internet, but to my surprise the BT historical website does not speak about it. However, a website connected with BT speaks about a French service before WWII [. I shall look that as I have a history of the French telecoms somewhere among my books. So, for the British case I continue to look.


 * Regards,
 * --Ft93110 (talk) 17:38, 22 September 2009 (UTC)

Hi Ft93110: Thanks for your update. I wanted to let you know that I contacted both the British Postal Museum and the British Telecom Museum previously. Both reported back to me that they had no references on file for a pre-WWII public videophone system. You can see there email replies which I've posted on the Talk pages, as can be see here.

While researching TV history a few months ago, a came across a single sentence that alluded to a public videophone system in London, pre-WW2. It discussed the several miles of 'dual coax cable' that was installed in London prior to the war. It didn't directly mention videophone service, but as I understand the technology, you would use dual coax for videophone lines between videophone stations, with one 1MHz line for receiving and the other 1MHz line for transmitting -to me that appeared to be the most likely use for the coax that the book mentioned. Other than that single sentence, the book offered no other information on pre-WWII videophone services in the UK.

I appreciate your looking for the reference to the British pre-WWII system, and could you also kindly double check the website for the French service as well. I viewed the French webpage last night but didn't spot anything related to their pre-WWII videophone service; the first item starts in 1964.

Thanks and best, HarryZilber (talk) 17:21, 23 September 2009 (UTC)

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