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Details for TB 701-80 I1 - AE Type 80, Transistorized Amp (Hard of Hearing)

TB 701-80 I1 - AE Type 80, Transistorized Amp (Hard of Hearing)
Name:TB 701-80 I1 - AE Type 80, Transistorized Amp (Hard of Hearing)

Technical Bulletin 701-80
Issue 1, July 1958



The type 80 Transistorized Telephone employs a transistor amplifier in
the receiving circuit for the purpose of aiding hard of hearing
subscribers. The Type 80 Transistorized Telephone is a self contained
desk set; no separate ringer box is necessary.
The set is equipped with a volume control and a 3-conductor line cord
which terminates in a small plastic 3-conductor connecting-block. The
connecting-block accepts wiring for either bridged or divided ringing.
No soldering is required. Telephone can be used on only 48-volt systems.

The Type 80 Transistorized Telephone has a printed circuit amplifier
(page 28) ; no attempt should be made to repair it in the field. Remove
the printed wire board and replace it with a new one. (Order D-35290-A
as replacement board.)

Filename:AECo Bulletin 701-80 - H-o-H Set.pdf
Filesize: 3.71 MB
Filetype:pdf (Mime Type: application/pdf)
Created On: 10/29/2009 23:43
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Last updated on: 11/28/2010 22:28

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Telephone Collectors International was incorporated under the laws of the state of Kansas on May 13, 1986. The goal of the organization is "to educate the public, as well as the members of the Corporation, regarding the history of telephony, the value of old telephones and related items, their collectability and preservation; to research telephone history and publish and provide literature thereon; to promote the public exhibition of old telephones and related items; and to promote common courtesies and guidelines for use by the public." Telephone Collectors International is recognized by the Internal Revenue Service as a 501(c)(3) organization, to which U.S. tax deductible contributions can be made.