3012—Overview and specifications
NGT Transceiver System Technical Service Manual 295
Specifications
General
Power requirements
13.5 V DC nominal, 250 mA maximum (operating voltage range 10.5 to 15 V DC)
Data mode
High-speed selective repeat ARQ data transfer
2400 bps, 16-channel QPSK (selectable between 4 and 16 channels)
Effective transmission rate
uncompressed 1475 bps (under optimum conditions)
compressed Up to 6000 bps
Link establishment mode
Proprietary link establishment 80 baud CHIRP
2400 bps HF modem
TMS320C31 32-bit digital signal processor, 27 MHz
TR.29 based ‘AT’ port, 9600 baud RS232
Data compression
Transceiver control lines and press-to-talk
Front panel indicators
1 × multicolour LED
Throughput 10 × red LEDs indicating approximately 100 bps
per LED when using 16 channels QPSK
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