Jump to content

Narrowband modem

From Wikipedia, the free encyclopedia

In telecommunications, a narrowband modem is a modem whose modulated output signal has an essential frequency spectrum that is limited to that which can be wholly contained within, and faithfully transmitted through, a voice channel with a nominal 4 kHz bandwidth.

Note: High frequency (HF) modems are limited to operation over a voice channel with a nominal 3 kHz bandwidth.

References

[edit]

Public Domain This article incorporates public domain material from Federal Standard 1037C. General Services Administration. Archived from the original on 2022-01-22. (in support of MIL-STD-188).