Found an interesting link.

Most of these Chinese military nets are on the air for many years. The ALE transmissions were first reported in early 2012. This

net is using 2G ALE to link stations and a FSK-8/PSK proprietary modem to exchange data. The ALE signals are usually

transmitted in USB. Sometimes you can hear clear Chinese voice traffic. Also used is 4+4 75/1000 or 4+4 75/3000 LSB.

http://numbersoddities.nl/Chinese-military-nets.pdf

http://numbersoddities.nl/files.html