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CB handset, with press switch, used by supervisors in C.B. exchanges.
This handset has a three position switch in the handle:-
Position 1 - Microphone muted - disconnected.
Position 2 - Microphone on - connections made.
Position 3 - Microphone on - connections made and locked.
Succeeded the Telephone No. 86 with loop.
Superseded by Telephone No. 184C.
Drawing No. 8777.
Circuit diagram N194 (Dated 1917).
Telephone includes (1928):-
| Part |
Mark 234 |
Mark 235 |
Mark 236 |
| Conns., Mouthpiece, No. 1 |
- |
- |
1 |
| Cords, Inst., No. 123, Brown |
- |
- |
1 |
| Cords, Inst., No. 123, Orange |
- |
- |
1 |
| Cords, Inst., No. 124, Black |
- |
- |
1 |
| Cords, Inst., No. 124, Pink |
- |
- |
1 |
| Cords, Inst., No. 125, Brown |
- |
- |
1 |
| Cords, Inst., No. 125, Orange |
- |
- |
1 |
| Cords, Inst., No. 422 |
- |
1 |
1 |
| Cords, Inst., No. 427 |
1 |
- |
- |
| Earpieces, No. 2 |
1 |
1 |
1 |
| Mouthpieces, No. 1 |
- |
1 |
1 |
| Mouthpieces, No. 12 |
1 |
- |
- |
| Transmitters, Inset, No. 1 |
1 |
1 |
1 |
Telephone includes (1946):-
| Part |
Mark 234 |
Mark 235 |
Mark 236 |
| Conns., Mouthpiece, No. 1 |
- |
1 |
1 |
| Conns., Mouthpiece, No. 5 |
1 |
- |
- |
| Cords, Inst., No. 1/23E, Brown, 2.25" |
- |
- |
1 |
| Cords, Inst., No. 1/23E, Orange, 2.25" |
- |
- |
1 |
| Cords, Inst., No. 1/23E, Black, 10.75" |
- |
- |
1 |
| Cords, Inst., No. 1/23E, Pink, 10.75" |
- |
- |
1 |
| Cords, Inst., No. 1/25E, Brown, 6.25" |
- |
- |
1 |
| Cords, Inst., No. 1/25E, Orange, 6.25" |
- |
- |
1 |
| Cords, Inst., No. 4/22A, Brown, 72" |
- |
1 |
1 |
| Cords, Inst., No. 4/27A, Brown, 48" |
1 |
- |
- |
| Diaphragms, No. 12 |
1 |
1 |
1 |
| Earpieces, No. 2 |
1 |
1 |
1 |
| Mouthpieces, No. 1 |
- |
1 |
1 |
| Mouthpieces, No. 12 |
1 |
- |
- |
| Transmitters, Inset, No. 1 |
1 |
1 |
1 |
|