Round-the-clock recording on up to fourteen communication channels .. .that is the service afforded by the THERMIONIC MULTI-CHANNEL AIRPORT RECORDER.
Changeover from one reel of recording tape to the next is fully automatic and over-lapping; and in the event of breakdown in any vital circuit ancillary equipment is automatically switched in-giving absolute assurance that no signal will pass unrecorded.

· .. plus these outstanding facilities
• magnetic record ing tape can be reused indefinitely
• separate de-magnetising unit prevents erasure of recordings by unauthorised personnel
• basic 4-channel equipment readily expanded to maximum of 14-channels
• built to withstand all climatic extremes.

Further details and specifications on application to:
THERMIONIC PRODUCTS LIMITED
leaders in the field of magnetic recording.

AND BRUSH CRYSTAL COMPANY LIMITEDHYTHE - SOUTHAMPTON, ENGLAND