DNET-100 is a data broadcasting system made by ComtechEFData, USA. It can provide cost-effective, flexible and reliable data broadcasting service. DNET-100 system consists of one uplink station and remote receive-only stations. Uplink station can broadcast data to the remote receive-only receivers over satellite. Uplink station can lock the transmission carrier to monitor its operating status.

System application:
File/data transfer
Paging coverage system
News and information distribution network
Real-time finance information distribution
Distance learning
Telex transmission
Presswork transfer

System characteristics:
Flexible broadcasting data rate, 4.8kbps-4.375Mbps with 1bit step.
Uplink station can be 1:1 redundant configuration to improve whole
　system reliability.
Remote receive-only station uses Phase Lock Loop LNB, improving data
　receiving quality.
SLRC, broadcasting network management system, can control each
　remote site within whole network over satellite, not occupying extra
　satellite source.
With DialMAC option, it can supervise all remote sites via PSTN even if
　the satellite link breaks off.

System performance:
C-band or Ku-band
Data rate ranges from 4.8kbps to 4.375Mbps with 1bit step
Supporting synchronous, asynchronous and SDLC
Selective EIA-232, EIA-422 interface:
BPSK, QPSK modulation
BPSK FEC1/2, QPSK FEC1/2,3/4,7/8
Multiplexing configuration can extend to 8 ports(each port data rate
　ranges from 600bps-4Mbps)

Figure

System composition
Broadcasting uplink center station:
ODU
　C-band:　　CST-5005, CST-5000
　Ku-band: KST-2000A, KST-2000L
Satellite Modem (internal built-in MUX as option) SDM-300
SLRC or DialMAC

Remote receive-only station:
LNB
　C-band:　　CLNB
　Ku-band: 　KLNB
Satellite receiver (internal built-in DEMUX as option) SDR-54