THE WORLD OF FREE PACKET RADIO SOFTWARE IN AMSTERDAM
THE HAL CLOVER 2000 DSP 4100 PACKET RADIO MODEM
HAL COMMUNICATION CORP. - CLOVER 2000 - DSP 4100 MODEM
The DSP4100 2K is an HF data modem that provides clover 2000, a 2000 bits/sec voice bandwidth, adaptive waveform specifically designed for HF radio data communications.
clover 2000 measures real time hf signal conditions and sets the most efficient modulation for these conditions.
8 bit data is sent without extra manipulation or modification.
ARQ mode is simultaneously bi directional duplex and does not require an over command.
FSK waveforms cctr 476 / 625 tor, p-mode, baudot and asii are included. Housed in an rf tight shielded enclosure, the dsp modem operates on 10 to 18 volts dc.
Internal modem software can be uploaded into the dsp 4100 2k into non volatile flash memory, greatly simplifying addition upgrades.
The DSP4100 2K is particularly well suited for use with lap-top terminals pc's in a portable or field environment.
Many third party software packages are available.
SPECIFICATIONS
Format
8-bit transparent
Bandwidth
2000 Hz (500-2500 @ -50 dB)
ARQ Mode Modulation
BPSM, QPSM, 8PSM, 8P2A, 16P4A
FEC Mode Modulation
2DPSM, BPSM, QPSM, 8PSM, 8P2A, 16P4A
Tones
1500 Hz Center
Symbol Rate
62.5 per second
Error Correcting Coding
Reed-Solomon code:60, 75, or 90% Code Rate
ARQ protocol
2-level, multiblock auto adaptive modulation
Adaptive Mode Control
Measure S/N & Phase on all data, set TX mode
ARQ Thru-put
28 to 250 bytes/sec. 224 to 2000 bits/sec.
FEC Thru-put
14 to 167 bytes/sec. 112 to 1336 bits/sec.
FSK MODES
FSK Tones
500-3000 Hz, programmable
TTY Codes
Baudot and ASCII
TTY Rates
45, 50, 57, 100, 110 Baud
TOR Codes
CCIR-476 & CCIR-625
TOR Modes
ARQ, FEC, SEL-FEC
TOR Rate
100 Baud
P-MODE Modes
Auto-ARQ & FEC
P-MODE Rates
100/200 Baud
HARDWARE
Cabinet
Extruded 5.7x9.6x1.7 inch
DSP Processor
Motorola DSP56001
Control Processor
Motorola 68EC000
Analog I/O
TI TLC-320AC01 14-bit Codec
Memory
Flash RAM loaded via serial I/O
I/O Interface
Serial RS-232 9.6 kbps
Power Input
10 to 18 VDC, .25 A
Indicators
STBY, Call, Link, Error, TX, RX
Radio Performance
Tune in 10 Hz steps; +/-50 Hz stability
Radio Connections
Rx Audio, TX Audio, PTT, FSK, SEL-CAL 2nd serial I/O
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THE WORLD OF FREE PACKET RADIO SOFTWARE IN AMSTERDAM
