Two band 25 channel cordless telephone system

Telecommunications – Radiotelephone system – Including private cordless extension system

Patent

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Details

4551881, 4551911, 4551931, 455296, H04M 1100

Patent

active

057220794

ABSTRACT:
A cordless telephone system divides the 25 channel bandwidth allocated by the Federal Communications Commission (FCC) into two bands in order to obtain improved noise performance. The front end is tuned to the center frequency of each band and the tuning of the receiver to specific channel frequencies is accomplished via a PLL.

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patent: 5535432 (1996-07-01), Dent
patent: 5548821 (1996-08-01), Coveley

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