Magnetic amplifier switch for automatic tuning of VLF transmitti

Details Magnetic amplifier switch for automatic tuning of VLF transmitti Magnetic amplifier switch for automatic tuning of VLF transmitti

1989-06-09

1991-07-23

Kuntz, Curtis

Amplifiers

With magnetic means amplifying device

455121, 455127, H04B 102

Patent

active

050346970

ABSTRACT:
A magnetic amplifier switch is connected to a transmitter and antenna of a LF transmitting system. The transmitter is operable to produce a signal which is modulated to first and second frequencies, for example "mark" and "space" frequencies, at different times. The magnetic switch is connected with inductors which are also connected with the transmitter and antenna. Opening and closing of the magnetic amplifier switch changes the inductance of the antenna such that the antenna is automatically tuned to resonance at the one or the other of the modulated frequencies being transmitted at a given time.

REFERENCES:
patent: 2504967 (1950-04-01), Edinborgh
patent: 3162869 (1964-12-01), Yax
patent: 3189748 (1965-06-01), McMurray
patent: 3273071 (1966-09-01), Jackson
patent: 3278937 (1966-10-01), Leydorf
patent: 3739291 (1973-06-01), Buchhold
patent: 3922679 (1975-11-01), Campbell
patent: 3965474 (1976-06-01), Guerrino et al.
patent: 4458248 (1984-07-01), Lyasko
patent: 4521913 (1985-06-01), Huber et al.
patent: 4843634 (1989-06-01), Pike

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