A Report to the Secretary of State for Scotland
Scottish Home & Health Department, 1985 - Magnetic recorders and recording - 24 pages
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150 ohm balanced 2-tape system 485a Stereo Recorder 600 mV fixed 622C Recorder AMPLIFIERS Distortion Less Approx Battery Cardiod Microphone cassette recorders cassette stalling Central Scotland Police channel circuit cm/sec Condenser microphone control equipment Court playback dB Normal Ferric Dictaphone DIRECTORATE OF TELECOMMUNICATIONS Dolby eject mechanism Grampian and Strathclyde Grundig CR 485a HANNIMEX DUAL RECORDER leaderless tapes level Line output Load Impedance Loudspeaker mM/mm flux density monaural Neal Ferrograph Normal Ferric tape ohms 5 pin ohms phono output 600 mV Output Impedance pause facility POLICE INTERVIEWS Power Supply Pressure Zone Microphone procurator fiscal record level recording equipment SIGNAL TO NOISE Special Ferric speech Strathclyde Police SUSPECTED PERSONS switch is operated Tape Counter Tape Speed tape transport TAPE.RECORDING OF POLICE Tayside and Central Technical Specification TELECOMMUNICATIONS SCOTTISH OFFICE Total Harmonic Distortion track Transcription Machine voltage Volts Wow and Flutter Zone Microphone Frequency