Furuno FS-2570 (150W) User Manual

 

E5637S01G-M 

1.6  Inter-modulation 

Better than 80 dB

μV 

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 

 

2.1.1 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 
 

2.2.1 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 

μV input voltage 

2.2.11 Spurious response 

31.6 mV non-modulated at 10

μV 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 

 

2.3.1  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