Digital audio over SST wireless links
Fred Wylie · 1997
With a combination of apt-X100 digital audio data compression and the latest developments in RF spread spectrum technology (SST) for operation in the 2.4GHz segment of the S-band it is possible to exchange high quality audio over a full duplex link. When fitted with suitable antennae this RF transceiver can either bridge a short gap (see appendix) or act as a stand alone, point to point, two way high quality audio link anything up to 50km long. Although capable of producing a transmitter power output of 650mW if operated with the radiated power limited to 100mW (20dBm), then in most countries there is no requirement for an operating license. This link can be configured to operate at 128 or 256kbit/s and is capable of delivering audio bandwidths from 7.5kHz to 15kHz, stereo or mono dual channels.