"The phone is a remarkably complex, simple device, and very rarely ever needs repairs, once you fix them." - Dan/Panther
Started by Sargeguy, April 08, 2015, 10:20:31 PM
QuoteThe map is hand drawn and tracks the owner's career through the Bell System. It looks like he worked for Bell Labs, the research division of the Bell System. Harry B. Coxhead invented a signalling system for mobile phones back in the 50s, an important milestone in the development of cell phones. The figure in the upper right hand corner is a rendition of the "Spirit of Communication", a statue commissioned by AT&T and used occasionally as the Bell System/Bell Labs/Western Electric logo. The line "May you always find that extra jack" refers to telephone jacks. From the Bell Laboratories Record, July 1946: HARRY B. COXHEAD visited the White House to consult with the staff regarding communication matters.
QuoteThe line "May you always find that extra jack" refers to telephone jacks.
Quote from: Sargeguy on April 09, 2015, 12:42:56 AMThis explains why the picture of the radio she sent me has a handset:
Quote from: AE_Collector on April 09, 2015, 01:48:17 AMQuoteThe line "May you always find that extra jack" refers to telephone jacks. Not certain about that. Telephone Jacks as we know them didn't exist when he retired in 1957 (18 days after I was born) and i doubt that even the 4 prong jacks existed yet.But switchboard jacks existed and since he seems to have spent his career working on what would be used for trunking it might be that he was always looking for spare jacks on toll boards to connect his trial circuits to for testing.Terry
Quote from: Sargeguy on April 10, 2015, 07:33:17 PMInteresting, I wonder if there is something about the handset that would make it more suitable for radio telephone use? Here is another picture:
Quote from: 19and41 on April 10, 2015, 08:29:40 PMThe device was designed to allow transcription of telephone conversations and it only used the current of the telephone line. no amplification.