2. SSB RADIOTELEPHONE

Checking the transmitting power

During transmission, the IA bar deflects according to the current being fed to the antenna feeder from the antenna coupler. The unit of readout is amperes. The antenna current varies with the effective antenna impedance. The reading differs by the frequency and antenna length. The output power is proportional to the square of an antenna current.

CH:

200

 

 

 

 

 

 

 

 

Tx:

2182.0

 

 

kHz

Rx:

2182.00 kHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SSB SIMP HIGH FAST NB SQ

SEN

 

 

 

 

S

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IA

 

 

 

2.1A

 

 

 

 

 

 

 

 

 

 

Antenna Current

 

 

 

 

 

 

 

 

 

 

 

 

 

MMSI xxxxxxxxx

UTC 00:00

POS 35

00.0000N

135

00.0000E

EPFS 23:59

2.4Receiving

Check if the emission mode and receiving frequency are set properly. If necessary, set them again referring to section 2.1 and 2.2.

2.4.1RF gain (sensitivity) adjustment

In normal use the sensitivity should be set for maximum. If the audio on the received channel is unclear or interfered with other signals, adjust (usually reduce) sensitivity to improve clarity.

1.Rotate the ENTER knob to choose SEN in the equipment states area and then push the ENTER knob.

SEN

2. Rotate the ENTER to adjust and then push the ENTER knob.

2.4.2S-meter

The S-meter shows relative signal strength coming into the receiver front end. Note that the S-meter does not function when the AGC is turned off.

CH:

200

Tx:

2182.0 kHz

Rx:

2182.00 kHz

SSB SIMP HIGH FAST NB SQ

Equipment states area

SEN

 

 

 

S

 

 

 

 

IA

 

 

 

10.0A

 

 

 

 

S-meter

MMSI xxxxxxxxx

UTC 00:00

POS 35

00.0000N

135

00.0000E

EPFS 23:59

2-5

Page 29
Image 29
Furuno FS-5070 manual Receiving, RF gain sensitivity adjustment, Meter, Checking the transmitting power