H - Electricity – 03 – J
Patent
H - Electricity
03
J
325/117
H03J 5/00 (2006.01) H04B 1/02 (2006.01) H04B 1/06 (2006.01) H04B 1/38 (2006.01)
Patent
CA 1318359
45MR 004814 RADIO COMMUNICATION DEVICE WITH CONTROLLED FREQUENCY AND AT LEAST ONE FURTHER VARIABLE OPERATING PARAMETER ABSTRACT OF THE DISCLOSURE The operating frequency of a radio transceiver and at least one further variable operating parameter of the radio transceiver are controlled in accordance with pre-stored information. Transmit operating radio frequency information is stored in a memory together with associated optimum modulation deviation level information (e.g., so as to maintain a predetermined modulation level at each operating frequency). Receive operating radio frequency information is similarly stored in the memory along with information indicating whether microprocessor clock oscillator frequency is to be shifted (e.g., so as to avoid spurious interfering harmonics emanating from the clock). When operating in the transmit mode, pre-stored modulation gain level information associated with selected transmit frequency controls the gain of the modulator circuits to compensate for expected changes in modulator circuit gain with change in transmit radio freguency. In the receive mode, the microprocessor clock oscillator frequency may be shifted in accordance with the selected receive frequency, thereby automatically shifting harmonics of the microprocessor clock oscillator out of the receiver bandpass when necessary to avoid locally-generated signals from interfering with signal reception.
615795
Garner Terry Neale
Sherman Ralph Raymond Jr.
Company General Electric
Craig Wilson And Company
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