Telecommunications – Transmitter and receiver at separate stations – Single message via plural carrier wave transmission
Patent
1984-10-03
1985-09-10
Ng, Jin F.
Telecommunications
Transmitter and receiver at separate stations
Single message via plural carrier wave transmission
455 18, 455127, 455128, 455129, 340905, H04B 100, H04B 103
Patent
active
045411190
ABSTRACT:
A portable advertising sign is positioned in proximity to a street and includes a message board. A low power transmitter is physically secured to the sign and generates a modulated RF output signal at a predetermined frequency within the broadcast band. An antenna colocated with the sign is coupled to the transmitter and radiates the transmitter output signal. A cassette tape player is positioned in a secure area physically spaced apart from the sign by a substantial distance and includes a colocated power supply for supplying a DC voltage. A cable conveys the audio output signal from the tape player and the DC voltage from the power supply to the transmitter. The sign message board displays the operating frequency of the transmitter to vehicles passing by the sign.
REFERENCES:
patent: 1810264 (1931-06-01), Bonitz
patent: 2047440 (1936-07-01), Sloss
patent: 2255055 (1941-09-01), Halstead
patent: 2259316 (1941-10-01), Lyle
patent: 2517891 (1950-08-01), Laeser
patent: 3131351 (1964-04-01), Herzfeld et al.
patent: 3550106 (1970-12-01), Gehman
patent: 3660762 (1972-05-01), Smith
patent: 4097808 (1978-06-01), Parke
patent: 4158813 (1979-06-01), Ellis et al.
patent: 4307466 (1981-12-01), Goldschmidt
patent: 4317220 (1982-02-01), Martin
patent: 4347626 (1982-08-01), Wenzel
Radio Amateur's Handbook, 1966 Edition, pp. 94-95.
Operating Manual for "Radio Realty", Model 1650, 1982.
Brochure entitled "Radio Sign System; Now, Transmitting Your Own Message on the Radio can be Easy and Inexpensive".
Cooper John R.
Sawyer Richard G.
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