TRANSMITTERS &
TRANSMITTERS INSET


Transmitter No. 1

Standard Transmitter for CB telephones.  Uses a Mouthpiece No. 4.

 

 
Transmitter No. 2

Standard Transmitter for LB telephones.  Uses a Mouthpiece No. 4.

 

 
Transmitter No. 3

LB Deckert transmitter

 

 
Transmitter No. 4

LB Breastplate transmitter used by operators on primary battery trunk exchanges.

 

 
Transmitter No. 5

CB Breastplate transmitter used by operators on secondary battery trunk exchanges.

 

 
Transmitter No. 6

LB Transmitter used on Telephones No. 3.  Uses a Mouthpiece No. 5.

 

 
Transmitter No. 8

Used on CB exchanges with Arm Transmitter No. 2.  Fitted with a Mouthpiece No. 4.

 

 
Transmitter Inset No. 9

Used on Electrophone Stage Circuits.  Installed in a Transmitter No. 16.

 

 
Transmitter Inset No. 10

Carbon granule transmitter introduced in the early 1930's and used in all Bakelite handsets, later Candlesticks and some early 700 types.

Superseded by Transmitter No. 13.
 

Transmitter Inset No. 13

Carbon granule transmitter used in all Bakelite handsets and some early 700 types.

Superseded by the Transmitter No. 16 for 700 type telephones.
 


 
Transmitter Inset No. 15

Carbon granule transmitter used in Trimphones and headsets.

The rubber grommet on the front is removed when used in Trimphones.


 
Transmitter No. 16

LB transmitter used on Electrophone Stage Circuits.  Fitted with an Angelini type transmitter and used a Mouthpiece No. 13.

The Mark 234 model used a Transmitter Inset No. 9.

 

 
Transmitter Inset No. 16

Carbon granule transmitter in general use from around 1960.  Superseded by the Transmitter No. 21.

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Transmitter No. 17

Fitted on Tables, Electrophone, NT.

 

 
Transmitter No. 21

Used for signalling deposits of coin in prepayment coin collecting boxes.
 

 
Transmitter Inset No. 21A

Two types available.

Introduced Oct 1982

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Last revised: May 12, 2015

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