Patent
1975-11-28
1977-09-13
Safourek, Benedict V.
325151, 325171, H04B 104, H04B 154
Patent
active
040485617
ABSTRACT:
In a transmitter or transceiver having alternately selectable transmission frequency channels, frequency selection switching is actuable for switching the transmitter from channel to channel and for stopping at the desired channel. A device, such as a microphone push-to-talk switch actuates the transmitter. Lock-out circuitry, interconnected with the transmitter actuating device and frequency selection switching, precludes simultaneous transmission and channel switching. In one embodiment, operating potential is removed from channel switching circuitry when the transmitter is in actuated condition and such channel switching circuitry is supplied operating potential only with the transmitter in its nonactuated condition. In further embodiments, frequency selection switching is disabled or blocked when the transmitter is actuated and only becomes enabled when the transmitter is deactuated.
REFERENCES:
patent: 2458558 (1949-01-01), Bradley
patent: 2837650 (1958-06-01), Keen et al.
patent: 3253222 (1966-05-01), Goldstein
patent: 3413554 (1968-11-01), Yates et al.
Translation of German Offenlegungsschrift No. 2,332,022 Jan. 16, 1975.
Packard Keith A.
Wilcox Glade
Robyn International, Inc.
Safourek Benedict V.
LandOfFree
Apparatus for preventing simultaneous transmission and channel s does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for preventing simultaneous transmission and channel s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for preventing simultaneous transmission and channel s will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-276795