Furuno FS-5070 manual DSC/WATCH Keeping Receiver

FURUNO					FS-1570/2570/5070
1.3.3	Sensitivity	Input level at 10 ohm+250 pF (below 4 MHz) and 50 ohm
		(above 4MHz) to produce SINAD 20 dB
		Frequency Range		J3E/H3E
		100 kHz to 300 kHz		35 dBµV
		300 kHz to 1.6 MHz		25 dBµV
		1.6 MHz to 4.0 MHz		13 dBµV
		4.0 MHz to 30 MHz		7 dBµV
1.4	Intermediate frequency	1st: 72,455 kHz, 2nd: 455 kHz
1.5	Selectivity	J3E: 2.4kHz at -6dB, H3E: 6kHz at -6dB, J2B (F1B): 300Hz at –6dB
1.6	Inter-modulation	Better than 80 dBµV
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	FS-1570/2570:	Internal speaker: 3W/8 ohm
			External speaker: 4W/4 ohm
		FS-5070:	Internal speaker: 1W/8 ohm
			External speaker: 3W/4 ohm
		Handset: 2.5mW/150 ohm, Line output: 0 dBm/600 ohm
1.11	Standard features	Noise Blanker, Voice-activated squelch, Pre-selector

2 DSC/WATCH KEEPING RECEIVER

2.1DIGITAL 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	FS-1570/2570: ITU-R Rec.M493-10, M541-8, M1082-1
		FS-5070: ITU-R Rec.493-11, 541-9
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

2.2DSC/WATCH RECEIVER (FS-1570/2570)

2.2.1Frequency range

	DISTRESS	2187.5/ 8414.5 and 4207.5/ 6312/12577/16804.5 kHz
	ROUTINE	2187.5 kHz
2.2.2	Class of emission	F1B, J2B
2.2.3	Antenna impedance	50 ohm
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

2.2.6Intermediate frequency 1st: 54,455 kHz, 2nd: 455 kHz

SP - 2 E5656S01A-M

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