Select this link for a description of the TN1 transmitter.
|This photo of a TN1 transmitter appeared in a Marconi advertisment in the front portion of the "Admiralty Handbook of Wireless Telegraphy", 1925 (actually a 1928 reprint) so it is older than that. (Submitted by Stan Barr)|
Contributors and Credits:
1) Stan Barr <g0clv(at)dsl.pipex.com>