TELEPHONE No. 86
|CB Microtelephone for night operators.
Handset with press button in handle. The press button normally shorts the transmitter.
Possibly used on exchange switchboards for monitoring purposes.
This Telephone could also be supplied with a suspension loop and this was superseded by the Telephone No. 94 with loop.
Telephone includes (1928):-
Circuit diagram - N186.
Drawing No. 8777, 8778 and 8779.
Last revised: November 29, 2020