Aside from the demodulator, the rest of the radio setup was off-the-shelf.

The nanotech device is a demodulator, a simple circuit that decodes radio waves and turns them into audio signals.

Using a modem (modulator-demodulator) is relatively easy if you follow the instructions that come with the modem and the communications software.

A "modem," or modulator-demodulator, is a device which translates the digital impulses of computers into audible analog telephone signals, and vice versa.

Fronting the street, it had special glass in the windows so no one could see inside or use a demodulator to listen in on conversations.

An acronym for MOdulator-DEModulator.