The latest technology of data transmission technology is applied in the radio modem, which made it
possible to ensure an error-free data transfer rate of up to 9600 bps, which distinguishes it from
modern modems.
The modem optimally provides high-speed data transmission with a HF channel width of 3.1 kHz.
Guaranteed data delivery in the HF channel is provided by the original protocol with a variable
packet length (from 64 to 1024 bytes).
KEDR radio modem software provides:
Work in the channel STK
Automatically establish a connection with a given subscriber
Data transfer with information speed of 300, 600, 1200, 2400, 4800.96 bps
File transfer with guaranteed delivery at a speed of 7.2 kbit / s;
Automatic channel quality control and adaptation according to speed and type of CCM (signal-code
combination, based on foreign standards MIL-STD-188-110B.
The KEDR radio modem provides single-channel signal reception with the following
characteristics:
Range of working frequencies, MHz 1.5 ... 30
Input impedance, Ohm 50
Sensitivity in the 3 kHz band, μV no worse than 0.5
Single-signal dynamic range in the 3 kHz band, dB, not less than 105
The dynamic range of the receiving path for intermodulation distortion of 2 and 3 orders of
magnitude relative to 1 μV, dB, not more than 80
Frequency selection of signals with bands 3, 6, 9, 12, 15, 18, 21, 24, 50, 100 kHz.
Single-channel generation of high-frequency signals by direct synthesis with the following
characteristics:
Range of working frequencies, MHz 1.5 ... 30
Output impedance, Ohm 50
Output signal level, W, maximum 10
Level of spurious emissions, dB, no more than 50
Powered by DC 12 V.
Additional options:
Power amplifier (up to 50 watts)
Small antenna