Icom IC-F3GS Marine Radio User Manual


 
2 - 1
SECTION 2 INSIDE VIEWS
• MAIN UNIT
Power amplifier
(Q1: 2SK2974)
Antenna swtching circuit
(D1, D2, D8: MA77)
TOP VIEW BOTTOM VIEW
RF amplifier
(Q12: 3SK293)
VCO circuit
1st mixer
Q13: 3SK239A [OTHER]
3SK320 B
Low-pass filter circuit
TX/RX switch
(D3, D4: MA77)
Mic amplifier circuit
APC
IC3A: NJM2902V
Q37: DTA144EU
FM IF IC
(IC2: TA31136FN(D))
CPU
(IC8: HD6433876B50H)
EEPROM
IC7: HN58X2432TI [OTHER]
HN58X2464TI H
D/A converter
(IC10: M62363FP-650C)
PLL reference oscillator
X1: CR-664A 15.3 MHz [OTHER]
CR-671A 15.3 MHz A, D
Crystal filter
FI1: FL-311 [OTHER]
FL-312 C
FL-333 F, G
FL-334 E
PLL IC
(IC1: µPD3140GS)
IF amplifier
(Q14: 2SC4215 O)
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A: W/N-type B: ETS/CEPT version
C: W-type of [GEN] D: EIA/TIA version
E: W-type of ETS/CEPT version F: N-type of ETS/CEPT version
G: M (20 kHz)-type H: 100 channel version