Pa/Fil Board (05P0667)/Sw Reg Board (05P0668) - Furuno FS-1503 Service Manual

4. PA/FIL Board (05P0667)/SW REG Board (05P0668)

R15 (13 V ADJ)
SW REG
05P0668
(OPTION)
DRIVE: 2SC3133
TX FIL Circuit
B1 B4 B2 B5 B3 B6 (Note 1)
R39
PA: 2SC3240
(PA BIAS)
Note 2) BC BAND FIL Setting
• J9, 8
• J8, 9
3-3
Note 1) TX FIL ranges
• B1: 0.1 to 2.4
• B2: 2.4 to 3.6
• B3: 3.6 to 6.0
• B4: 6.0 to 10.0
• B5: 10.0 to 18.0
• B6: 18.0 to 30.0 MHz
J9
BC BAND
FIL (Note 2)
J8
: 1.6 to 30.0 MHz
1
: 0.1 to 30.0 MHz (Default)
2