Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1990-11-30
1994-11-01
Kuntz, Curtis
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
455 66, 455270, A04B 122, H04B 700
Patent
active
053614054
ABSTRACT:
A broadband radio receiver monitors transmissions over a broadband of frequencies, and especially over the aircraft band, between aircraft and control towers or between the cockpit and ground stations at an airport. The radio utilizes an earphone having a lead which provides an antenna. The lead is AC coupled to an amplifier having band-pass filters connected to the input and to output thereof to provide selectivity while passing the entire band. An AM detector is connected to the output filter and produces an audio signal which is coupled, via an RF blocking inductor, to the earphone by way of the earphone lead. A miniaturized self-contained radio is therefore provided which does not utilize a local oscillator or other radiating signal generator and may be used on board or nearby aircraft without violating regulations for the use of electronic equipment.
REFERENCES:
patent: 2171679 (1939-09-01), Wohlfarth et al.
patent: 2280187 (1942-04-01), Case
patent: 2360726 (1944-10-01), Setchell
patent: 2535063 (1950-12-01), Halstead
patent: 4290144 (1981-09-01), Webb
patent: 4398304 (1983-08-01), Fathauer et al.
patent: 4419766 (1983-12-01), Goeken et al.
patent: 4520507 (1985-05-01), Moon
patent: 4569084 (1986-02-01), Takahama
patent: 4726072 (1988-02-01), Yamashita et al.
patent: 4727594 (1988-02-01), Ruppel
patent: 4893316 (1990-01-01), Janc et al.
Charouel Lisa
Kuntz Curtis
Lukacher M.
Ramsey Electronics, Inc.
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