2 reducing transmitter power, 3 condition of the transmitting unit – Furuno FS-5070 User Manual

Page 28

2. SSB RADIOTELEPHONE

2-4

completed, TUNE: OK appears. If tuning fails, TUNE: NG appears.

2. Hold the handset close to your mouth, press the PTT switch and speak clearly.

Note: When tuning is initiated in the two control units system, the display of the idle control

unit shows “OCCUPIED(ANOTHER CONTROLLER).” In this case, only the
DISTRESS button is operative on the idle control unit. Further, if a control unit is in
use when the other control is tuned, the display of the activated control unit shows
“OCCUPIED” plus the reason why cannot use: ANOTHER CONTROLLER or NBDP
to inform you that tuning is not operated.

2.3.2

Reducing transmitter power

To minimize possible interference to other stations, reduce the transmission power. This
should be done when using the transceiver in a harbor, near the shore or close to
communication partner (other ship).

1. Rotate the ENTER knob to choose HIGH, MID, LOW (1) or LOW2 (shown on FS-5070)

in the equipment states area and then push the ENTER knob.

HIGH

MID

LOW1*

LOW2

SSB SIMP HIGH FAST NB SQ

SEN

10.0A

MMSI xxxxxxxxx

35 00.0000N

135 00.0000E

CH:

200

Tx:

2182.0 kHz

Rx: 2182.00 kHz

UTC 00:00
EPFS 23:59

HIGH

MID
LOW1
LOW2

FS-1570 FS-2570 FS-5070

150Wpep 250Wpep 500Wpep

100Wpep 125Wpep 350Wpep

68Wpep 90Wpep 200Wpep

110Wpep

(The above figure shows FS-5070.)

*: For FS-1570/2570, "LOW"

(Power: ITU401CH)

POS

2. Rotate the ENTER knob to choose a power as appropriate and then push the ENTER

knob.

Note: Power amplifier temperature is monitored, and when its temperature rises above a

certain temperature output power is automatically reduced. For FS-5070, when the
over current is detected, output power is automatically reduced.

2.3.3

Condition of the transmitting unit

While transmitting, you may display RF (PA output), IA (antenna current), IC (collector
current) or VC (collector voltage), at the lower left-hand side of the radiotelephone screen.

1. Rotate the ENTER knob to choose RF, IA, IC or VC (whichever is displayed) in the

equipment states area, and push the ENTER knob.

Equipment states area