Furuno FS-5000 User Manual

FM-7000
E1-12
3. Adjustment
3.1 Tx Power Adjustment
Item Rating Check Point Adjuster Condition
SIMP 20 to 25 W R54 Simplex CH, Power: HI
DUP 18 to 25 W R55 Duplex CH, Power: HI
LOW Loss than 1 W R56 CH16, Power: LOW
Hot Power 6 to 8 W
ANT connector
R53
CH16, Power: HI
(Temporarily disconnected
lead wire of posistor RT1.)
Note)
Hot power;
It reduces the power automatically to 6 to 7 w when the temperature at the power
amplifiers exceeds 100 degrees (actually 85 degrees)“HI” indication blinks when power
is reduced.
3.2 Frequency Adjustment
TX Freq. on CH16 (Rating) Conditions Adjuster
156.8 MHz
±
300Hz
(Rule:
±
10ppm)
PTT: ON
C68
(TX Board)
If the frequency is out of the rating, adjust C68 on TX Board to correct.
(Adjust to PLL reference OSC: 8 MHz )
R56 [Low]
R55 [DUP]
R54 [SIMP]
R53 [Hot]
TX Board
To check "HOT"
power,remove RT1
at solder side.
RT1
Power
meter
Frequency
Counter
ANT
MAIN UNIT
VCO
PA
C68
Pick up
Frequency ADJ. Power ADJ.

Furuno FS-5000 Specifications

General

Brand	Furuno
Model	FS-5000
Category	Marine Equipment
Language	English