Automatic channel scanning attachment for manual CB radio transc

Details Automatic channel scanning attachment for manual CB radio transc Automatic channel scanning attachment for manual CB radio transc

1978-04-27

1979-12-25

Richardson, Robert L.

325470, 325471, H04B 140

Patent

active

041807766

ABSTRACT:
An automatic channel scanning attachment is described for connecting to a CB radio transceiver having a manual channel selection. The attachment is designed to automatically manipulate the manual channel selector to scan the channel to select an active channel. The attachment includes a separate chassis having a wire for connecting to the transceiver squelch circuit to receive a squelch signal. The attachment includes a signal polarity network for producing a process signal of a desired polarity in response to a squelch signal of an unknown polarity. The process signal activates a scanning control network to generate a scanning signal that may be time delayed with respect to the squelch signal. The scanning signal is used to activate a selector actuator means to manipulate the manual channel selector to scan the channels until an active channel is found.

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patent: 3290602 (1966-12-01), Hayden
patent: 3447088 (1969-05-01), Guyton et al.
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patent: 3947774 (1976-03-01), Glemneur
patent: 3961261 (1976-01-01), Pelasterer
patent: 4112377 (1978-09-01), Tanner et al.

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