This pair of articles is based on the content of a booklet designed for visitors to Rediffusion's main production centre in Wembley, North London and published in April 1967.
Production Facilities
Studios
STUDIO 1. 80’ x 55’ working height 16’ (4,400 sq. ft.)
STUDIO 2. 80’ x 41’ working height 16’ (3,280 sq. ft.)
STUDIO 4. 74’ x 42’ working height 11’ (3,108 sq. ft.)
Each of these studios is equipped with four 4 1/2” image orthicon cameras. The vision mixing panels include special electronic effects such as inlay, wipes and blinge. There are facilities for 18 low level and nine high level sound input channels, two grams and one magnetic tape recorder per studio. The lighting system in studio 1 is three phase at 180 amps per phase. There are 116 two kw and 6 five kw single phase outlets. Lighting in studio 2 is the same as studio 1 except that the total of two kw circuits is 100. Studio 4 operates from a two phase service at 150 amps per phase with 108 two kw and six 5 kw outlets.

Studio 5. 140’ x 100’ working height 40’ (14,000 sq. ft.)
Studio 5 can be operated separately as two self-contained studios (5a and 5b) by means of a sound proof steel partition which can be raised or lowered in 30 minutes. The acoustic
separation between the two halves of the studio is better than 65 db.
There are eight 4 1/2” image orthicon cameras which, in addition to 405 lines, can also be operated on the American 525 line or European 625 line standards. Fitted throughout are 21” programme monitors which are switchable to the three different standards (405, 525, 625 lines). Each half of the studio has its own vision, sound and lighting control rooms. Studio 5a vision control can control up to eight cameras and 5b up to five cameras. Normally four cameras are used in each half studio. The comprehensive vision mixing panels include special effects.
Studio 5a and 5b sound consoles each have facilities for 26 low level and nine high level input channels. Echo circuits, artificial reverberation and sound re-inforcement are provided, together with three disc reproducers and one magnetic tape recorder for each half of the studio. There are 52 microphone circuits available for the full studio, 26 for each when the two halves are used separately.

The lighting system is three phase at 1,200 amps per phase. A total of 340 single phase circuits are provided for each half of the studio. Of these 120 are controlled from the lighting control console, 100 are provided with 5 kw transformer dimmers, and 20 are contractor controlled. The lighting and power supply in studio 5 is at a level suitable for colour television.

Telecine
There are four machines at Wembley and seven at Television House. The Wembley equipment consists of one RCA Vidicon, one Cintel Flying Spot and two EMI Flying Spot. Both 16 mm and 35 mm film can be handled.
Videotaperecording
Rediffusion TeIevision has four muIti-standard Ampex VTR machines at Wembley and two additional machines at Television House.
Telerecording
The Wembley telerecording unit can record either on 16 mm (one channel) or on 35 mm (two channels).

Outside Broadcasts
Four mobile control rooms are based at Wembley. Four cameras are available with each control room and three have a capability of 14 microphone, tape and gram inputs. A simple vision mixing panel enables cutting and mixing between the cameras. Links are provided over six vision channels, two of which take sound also, and two sound only channels. There are two mobile generators, one to service a mobile control room, the other for the link equipment.
Transcription Unit
This unit provides for the editing of 1/4 inch magnetic tapes and has disc cutting equipment for 7 8 rpm discs.
Sound
EquaIisation and Iimiter/compressor equipment are available. There is a large sound effects library and also a good music Iibrary.
Film
All film facilities are at Television House.
Studio Hire
The production facilities listed above are in continuous use by Rediffusion Television but are hired out to other organisations on request. For further information write to Head of Studio Operations, Rediffusion Television Studios, Wembley Park Drive, Wembley, Middlesex. (Tel. WEMbley 8811) [Contact information provided for historical completeness only - Ed.]
A Note on ITV
Independent Television was set up by an Act of Parliament in 1954. A public corporation, the Independent Television Authority (ITA), was authorised to provide television programmes, financed by advertisements, in competition with the existing non-commercial television service of the BBC.
The ITA have appointed 14 different programme companies to produce the programmes of Independent Television. In the three largest areas of population - London, the Midlands and the North of England - four companies divide between them the task of providing programmes. In each of the 10 other areas a single company is responsible for the full week’s programmes.
Since 1955 Rediffusion Television (originally Associated-Rediffusion) has been providing the London weekday programmes of ITV. Together with the three other major companies in London, the Midlands and the North (ATV Network, ABC Television and Granada Television) Rediffusion provides a network service of programmes which are seen in the 10 smaller regional areas. Many of these programmes are recorded or are on film and are
distributed overseas by Global Television Services (3 Vere Street, London, W.1) acting as agents for Rediffusion Television.


