Description:
The modem is a high performance, full duplex, BPSK/QPSK digital modulator/demodulator for Frequency Division Multiple Access (FDMA) satellite communication sytems. It interfaces between SCPC fixed rate terminal equipment having a data rate of 50Kbps to 3.152 Mbps. The modem is a complete, self-contained unit in a standard 19" rack mountable enclosure weighing approximately 25 lbs.
Alternate views of the SDM-650A/B Modem:

Rear View
Open Face