(under subclass 298) Subject matter wherein channels of a low speed asynchronous data system are tuned to respective separate frequencies.
SEE OR SEARCH THIS CLASS, SUBCLASS:
295, for a frequency division duplex system.
343+, for combining or distributing information via frequency channels in communication over free space.
480+, for combining or distributing information via frequency
channels not limited to carrying low speed asynchronous data.
SEE OR SEARCH CLASS
334, Tuners, appropriate subclasses for a tuner, per se, that is adjustable to a particular frequency by adjusting the inductance or capacitance of the tuned circuit. 455, Telecommunications,
150.1+, for radio receiver signal selection based on frequency.
