Wednesday, November 21, 2012

New Data Mode Uses Chinese Characters

As the use of amateur radio grows in China, a new digital mode has been developed that uses Chinese characters rather than the Western European/American alphabet. Southgate Amateur Radio News reports that the new mode is called CP-16 and is based on the 16x16 dot-matrix display used to generate Chinese characters on computer screens. It uses 16 on-off keyed audio characters spaced at 17-Hz intervals, resulting in a total signal bandwidth of less than 400 Hz. Transmission speed is two-to-five characters per second and it can be received on any software defined radio (SDR) receiver or SSB receiver/computer combination running waterfall-display software. The characters will appear directly on the waterfall display. More information is available at <>.