Appendix 4) Specifications
AP4- 3
2.2.11 Spurious Response 31.6 mV non-modulated at 10µV input voltage,
at error rate within 1%
2.2.12 Scanning Reception max. 6 frequencies within 2 s (MF/HF)
2.2.13 Diagnosis Transmit high frequency signal of DSC
2.3 GENERAL WATCH KEEPING RECEIVER (FS-2570 ONLY, OPTION)
2.3.1 Frequency Range 1,606.5 kHz to 27.5 MHz
2.3.2 Class of Emission J2B, F1B
2.3.3 Antenna Impedance 50 ohms
2.3.4 Local Oscillator 1st: F+54,455 kHz, 2nd: 54,000 kHz, 3rd: 456.7 kHz
2.3.5 Frequency Stability within ±10 Hz
2.3.6 Intermediate Frequency 1st: 54,455 kHz, 2nd: 455 kHz
2.3.7 Selectivity -6 dB: 270 Hz to 300 Hz,
-30 dB: within ± 380 Hz,
-60 dB: within ±550 Hz
2.3.8 Receiving System Double-conversion superheterodyne
2.3.9 Radiation within 2 mW
2.3.10 RX Error Rate 1 % or less at 1 µV input voltage
2.3.11 Spurious Response 31.6 mV non-modulated at 10µV input voltage,
at error rate within 1%
2.3.12 Scanning Reception max. 6 frequencies within 2 s (MF/HF)
2.3.13 Diagnosis Transmit high frequency signal of DSC
3 NBDP FUNCTION (OPTION)
3.1
GENERAL
3.1.1 Communication Mode ARQ, FEC, DIRC (FSK)
3.1.2 Protocol ITU-R M625-3, M476-5, M490, M491-1, M492-6
ID code 4, 5, 9 column
Line cord 4B/3Y (Intl.)
Modulation AFSK
Tone frequency 1615/1785Hz ± 0.5 Hz (mark/space)
Tracking range ±80 Hz
3.1.3 Applications
Auto-reception Setting timer and frequency (max. 10 settings available)
Frequency scanning 10 group max., 20 station as each group
User-channels 100 channels max.
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