Wiktionary
subchannel
n. 1 (context radio English) A distinct division of a channel or frequency band 2 (context computing English) A distinct part of an I/O channel associated with a specific device
Usage examples of "subchannel".
The pressure waves would work their way along the subchannel, clear through the underground river passage right into the base.
They’re broadcasting just the video and audio of this meeting, no data subchannels or return broadcasts from either the Ousters near us or from the forest ring.
Chet steered cautiously south, searching out the deepest subchannels of the bay, avoiding anything suspicious.
They're broadcasting just the video and audio of this meeting, no data subchannels or return broadcasts from either the Ousters near us or from the forest ring.