Receiver; Dsc; Ch70 Watch Receiver - Furuno FM-8800D Service Manual

3. Receiver

(1) Frequency range
(2) Receiving system
(3) Intermediate frequency
(4) Sensitivity
(5) Adjacent channel selectivity
(6) Spurious response
(7) AF output
Handset earphone: 2 mW (150 ohms)

4. DSC

(1) Protocol
(2) Baud rate
(3) Modulation
(4) Frequency shift
Mark: 1300 Hz ± 10 Hz, Space

5. CH70 WATCH Receiver

(1) Receiving frequency
(2) Sensitivity Symbol error rate
(3) Conducted spurious emission
Simplex
FM-8800D
Duplex
Simplex
FM-8800S
Semi-duplex
Double superheterodyne
1st: 51.2375 MHz, 2nd: 37.5 kHz
µ
+6 dB V (20 dB SINAD)
70 dB or more
70 dB or more
Built-in speaker 3 W (4 ohms)
ITU-R Rec. M541-8, M493-10 (class A)
INTL Ver.: 0550215-02.xx, 03.xx
ITU-R Rec. M541-9,
Russian Ver.: 0550220-01.xx
1200 baud ± 30 ppm max.
AFSK
1700 ± 400 Hz
2100 Hz ± 10 Hz
156.525 MHz
Less than 1% (at 0 dB
Less than 2 nW
AP1-2
155.000 to 158.000 MHz
160.625 to 162.600 MHz
155.000 to 159.600 MHz
161.475 to 164.200 MHz
M493-11(class A)
µ
AP1) Specifications
V)