Furuno FS-1503, Service Manual

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4-14
How to adjust HI power
1. Select a TX channel. For example, select the ITU channel 401.
2. Press [TUNE/7].
TUNE appears on the display and the coupler starts tuning. When the tuning is
completed successfully, TUNE OK appears.
3. While pressing and holding down [ENT], press [8], and HI power data appears.
4001
220
J3E
ITU Channel Number
HI Power Data
ITU R
AGC
DUP
T appears during TX.
0 2 4 6 8 10
During TX, RF output level can be read.
NB
TR
4. Set power data by rotating the FREQ/CH knob.
The data can be set to from low power data plus 1 to 255. Read the power meter, if
connected, while pressing the PTT switch and whistling or speaking into the handset.
5. Press [ENT] to register the power data.
6. Repeat steps 1 to 5 to set another power data.
Power Data vs. Output Power (50 ohm dummy load connected)
Power Data 255 240 220 200 180 160 140 120 100 80 60 40 20 10 0
Output
(Wpep)
160 158 150 130 110 90 72 58 45 34 24 16 8 5 3