Furuno RC-1800F, Operator'S Manual, Page: 28 / 32

SP - 10
E5637S01F-M
1.6 Inter-modulation Better than 80 dB µ V
1.7 Spurious Response Better than 70 dB
1.8 AGC SLOW/FAST/OFF
1.9 BFO Frequency Telex/DSC: 1,700 Hz, Facsimile: 1,900 Hz
1.10 Audio Output Power Internal speaker: 1W/ 8 ohms
External speaker: 4W/ 4 ohms
Handset: 2.5mW/ 150 ohms
Line output: 0 dBm/ 600 ohms
1.11 Standard Features Noise Blanker, Voice-activated squelch, Pre-selector
2 DSC/WATCH KEEPING RECEIVER
2.1 DIGITAL SELECTIVE CALLING
2.1.1 Frequency Shift Space: 1785.0 ± 0.5 Hz, Mark: 1615.0 ± 0.5 Hz
2.1.2 Baud Rate 100 bps ± 30 x 10
-6
2.1.3 Protocol Complies with ITU-R Rec.493-10, 541-8, 1082-1
2.1.4 Modulation AFSK
2.1.5 Distress Alarm 3.5 s to 4.5 s self-repetition
2.1.6 Distress Alarm Memory 50 messages
2.2 DSC/WATCH RECEIVER
2.2.1 Frequency Range
MF/HF specification 2187.5/ 8414.5 and 4207.5/ 6312/12577/16804.5 kHz
MF specification 2187.5 kHz
2.2.2 Class of Emission F1B, J2B
2.2.3 Antenna Impedance 50 ohms
2.2.4 Local Oscillator 1st: F+54,455 kHz, 2nd: 54,000 kHz, 3rd: 456.7 kHz
2.2.5 Frequency Stability ±10 Hz
2.2.6 Intermediate Frequency 1st: 54,455 kHz, 2nd: 455 kHz
2.2.7 Selectivity
-6 dB: 270 Hz to 300 Hz,
-30 dB: within ± 380 Hz,
-60 dB: within ± 550 Hz
2.2.8 Receiving System Double-conversion superheterodyne
2.2.9 Radiation within 2 nW
2.2.10 RX Error Rate 1 % or less at 1
µ
V input voltage
2.2.11 Spurious Response 31.6 mV non-modulated at 10 µ V 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