"The book provides a background briefing on surveillance technology as it existed in 1976 - although classified devices of the period are not covered. There is a comprehensive description of telephone tapping techniques, wireless transmitters and how their transmissions are concealed, non-audio eavesdropping and tape-recording technology. Coverage is thorough and includes numerous block diagrams but no circuits or schematics. There is a section on counter measures (TSCM) which mostly emphasises how difficult this task is and another on the falsification of recordings." reviewed by John A. Faulkner "signalsnatcher" (Sydney, NSW, Australia)
Monday, April 26, 2010
"The book provides a background briefing on surveillance technology as it existed in 1976 - although classified devices of the period are not covered. There is a comprehensive description of telephone tapping techniques, wireless transmitters and how their transmissions are concealed, non-audio eavesdropping and tape-recording technology. Coverage is thorough and includes numerous block diagrams but no circuits or schematics. There is a section on counter measures (TSCM) which mostly emphasises how difficult this task is and another on the falsification of recordings." reviewed by John A. Faulkner "signalsnatcher" (Sydney, NSW, Australia)
