Block Diagrams; Antenna And Communication Units - Furuno FELCOM 12 Service Manual

3.2 Block Diagrams

1. Antenna and Communication Units

12 ~ 16dBW (20W)
TX : 1626.5 ~ 1646.5MHz
IC-112
TX +8 ~ 13dBm
:
RX -120.5 ~ -94.5dBm
:
• +12V
• TX ON
• HPA ON
• SYN DATA/CK/LE
• HPA ON
• REF CONT
• TX ON
• 15.6MHz
• SYN UN-LOCK
• AGC LVL
Figure 3-2 Block Diagram of Antenna and Communication Units
-148 ~ -136dBW/m
+1.5dBi
+43dBm
-141.5 ~ -129.5dBm
DIPLEXER
TX RX
ANT
TX : -5 ~ +10dBm
RX : -118.5 ~ -91.5dBm
• D-FB-CV : 30m
• 8D-FB-CV : 50m
TX : +29V
• 12D-SFA-CV : 100m
RX : +18V
TX/RX L BAND
TX
TX : 28dB
RX : -2dB
TX/RX L BAND
RF CON
TX S-DATA RX IF 50kHz
CPU
2
RX : 1530.0 ~ 1545.0MHz
RX GAIN
DIPLEXER+ANT=33 ~ 38dB
GPS) 29 ~ 38dB
Loss : -3 ~ -13dB
TX : +30V
RX : +18V
REG
1575.42MHz
GPS
ANT VOL/CUR
IC-212
3-2
FAN
(on during TX)
CB1
HPA ON
+5/15V