A major breakthrough in Wireless Telegraphy Control. You will have read about the evolution of Wireless Telegraphy equipments and how, on the transmitter side, we moved fromSPARK to ARC to VALVE to SOLID STATE CIRCUITRY, and on the receiver side, from COHERER to CATSWHISKER to CRYSTAL to VALVE to HETERODYNE to SOLID STATE, and all evolutions dealing with pieces of kit with their own unique way of being controlled/used by operators, local or remote.

  In the 1930's the Admiralty designed the first of the many control systems which would deploy equipments to their users as a SYSTEM rather than as separate pieces of kit, and this was named as:


  In its day, it revolutionised the way in which the ships were managed and fought, giving the Command a flexible and versatile communications 'tool'.

  The system was an arrangement of W/T equipments in which transmitter were grouped in one or two transmitter rooms (TR's) remote from, but normally controlled by the Central Receiving Room (CRR) in which all the main receivers were fitted. The object of the arrangement, in conjunction with separated aerials and aerial filter units, was to reduce the interference caused by a ship's transmitters to her own reception and hence to reduce the necessity of detailing W/T guards (other ships whose reception was not interfered with keeping a watch for the ship whose reception was so affected).

  At the same time the System was to expedite the handling of messages, making arrangements for coding and distribution of messages to be carried out in one office adjacent to the CRR.

  Arrangements were made also to enable the operator at any receiver in the CRR or, with certain limitations, for any operator in any remote control position to control any transmitter.   Local change-over boards and an emergency receiver were fitted in the TR's to enable transmission and reception to be carried out at local control positions in the TR's.


  The following nomenclature was used for ships in which the above arrangements were made:-


  Further reading:

    CCS Schematic
    CCS Simplified Schematic
    CCS2 Board 2S Central Control
    CCS Photographs

  These pictures are self explanatory. The horizontal rows are the ships transmitters sited in their respective remote TR's. The vertical rows are the users of the equipment. Over on the right hand side of the matrix panel you will see switches (off to North West (as drawn) and on to North East) which are outlined in white. These are non-communicator user positions. All transmitters are remotely started from this control panel each circuit having its own voltmeters or pilot lamps. Once started, any transmitter can be switch on (on the matrix above) and keyed from a desired position. At each key, a neon lamp lights when the key is connected to a set and the filaments are lit. The output of all receivers (except the emergency receivers fitted in each TR) is taken to the Board Central Control which enable any remote control position to be plugged into any receiver, with certain limitation in the case of the gunnery control positions.

**********from little acorns big oaks grow**********

and this first system opened the doors to many new and better control system. These are shown in other files and the next logical file to view is that covering the concept known as the Centralised W/T System (CWS). CLICK HERE