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Title: The Blake Transmitter
Description: Toronto, The Author. 1974, First Edition. Original Wraps, 4to - over 9" - 12" tall. - The Blake transmitter was the first successful telephone transmitter (microphone). It was invented by Francis Blake in 1878 and used a carbon and platinum resistance element. It was later improved by Berliner and remained the standard for many years - 29 pages, + 15 pages appendix - a talk given to American Telephone Collector's Association in LaCross, Kansas in 1974 - stapled mimeo wraps, about fine - rare. Fine.

Keywords: The Blake Transmitter Was the First Successful Telephone Transmitter (Microphone). It Was Invented By Francis Blake in 1878 and Used a Carbon and Platinum Resistance Element. It Was Later Improved By Berliner and Remained the Standard for Many Years.

Price: US$ 25.00 Seller: alphabet bookshop (ABAC/ILAB)
- Book number: 12876

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