dual-frequency

The dual-frequency transmission was a well known communication technique in 1941 and necessary to communicate with a full fleet across a great distance.

DAY OF DECEIT ROBERT B. STINNETT 2001

Radio intercepts See also Decryption deceptive information provided for dual-frequency transmissions and of espionage activities first indication of Pearl Harbor as target of Heiyo Maru from Hitokappu Bay of imminent war declaration of Japanese approach to Pearl Harbor of Japanese approach to U.S. territory of Japanese fleet movements knowledge of Japanese communication procedures in leaked words and

DAY OF DECEIT ROBERT B. STINNETT 2001

The dual-frequency transmission was a well known communication technique in 1941 and necessary to communicate with a full fleet across a great distance.

DAY OF DECEIT ROBERT B. STINNETT 2001

The dual-frequency transmission was a well known communication technique in 1941 and necessary to communicate with a full fleet across a great distance.

DAY OF DECEIT ROBERT B. STINNETT 2001

The dual-frequency transmission was a well known communication technique in 1941 and necessary to communicate with a full fleet across a great distance.

DAY OF DECEIT ROBERT B. STINNETT 2001

Radio intercepts See also Decryption deceptive information provided for dual-frequency transmissions and of espionage activities first indication of Pearl Harbor as target of Heiyo Maru from Hitokappu Bay of imminent war declaration of Japanese approach to Pearl Harbor of Japanese approach to U.S. territory of Japanese fleet movements knowledge of Japanese communication procedures in leaked words and

DAY OF DECEIT ROBERT B. STINNETT 2001

Radio intercepts See also Decryption deceptive information provided for dual-frequency transmissions and of espionage activities first indication of Pearl Harbor as target of Heiyo Maru from Hitokappu Bay of imminent war declaration of Japanese approach to Pearl Harbor of Japanese approach to U.S. territory of Japanese fleet movements knowledge of Japanese communication procedures in leaked words and

DAY OF DECEIT ROBERT B. STINNETT 2001

Radio intercepts See also Decryption deceptive information provided for dual-frequency transmissions and of espionage activities first indication of Pearl Harbor as target of Heiyo Maru from Hitokappu Bay of imminent war declaration of Japanese approach to Pearl Harbor of Japanese approach to U.S. territory of Japanese fleet movements knowledge of Japanese communication procedures in leaked words and

DAY OF DECEIT ROBERT B. STINNETT 2001

The totalizer then causes the coin signal oscillator to readout a dual-frequency signal indicating the value deposited to ACTS (a computer) or the TSPS operator.

The Official Phreaker's Manual Version 1.1 by The Jammer and Jack the Ripper 1991

In older 3 slot phones: one bell (1050-1100 Hz) for a nickel, two bells for a dime, and one gong (800 Hz) for a quarter are used instead of the modern dual-frequency tones.

The Official Phreaker's Manual Version 1.1 by The Jammer and Jack the Ripper 1991