Use of SQUELCH control
This control is used to eliminate noise when Signal is ab- sent. Turn the control slowly until noise disappears. When the control is properly adjusted, only the receive Signal is heard from the speaker. This control is also used according to the strength of input Signal during mobile Operation.
Transmission
Notes:
1. Before transmitting, perform all the necessary pro- cedures for Optimum reception. Make sure that the fre- quency you have selected does not interfere with other stations.
2.Check to make sure that the antenna connected is of the proper type. Use of an improper antenna will result not only in insufficient power but also in TV1 and BC1 .
DO not attempt to operate the transceiver without con- necting antenna as it will Cause darnage to the transceiver.
Fig. 10 Transmission
Set the controls referring to Fig. 9. For transmission, use the following procedure:
1.Set the MODE switch to FM and the STANDBY switch to SEND (when the PTT switch is pressed, Signal is transmitted at the REC Position of the standby switch). Check to see that the RF meter is working and the ON AIR indicator is lit. Set the STANDBY switch to REC.
2.Adjust the microphone gain by turning the FM MIC con- trol. Normally, Optimum gain is obtained in the Center Position of the knob . If required, turn the control counterclockwise to reduce the gain.
C e n t e r Dosition
Fig. 11 MIC GAIN Adjustment
Use of LOW POWER Switch
This switch is used to reduce transmit power during Operation with a local Station, thus preventing interference to other stations. lt is also effective to reduce the power consumption.
Set the switch to the up Position and the transmit power is reduced to about 1 Watt.
The transmit power is indicated on the RF meter. Since the indication on the RF meter depends on the installation condition of antenna, it will not indicate the exact output power. If the meter indicates “8” at the rated power, then the reading of the meter will be “1” or “2” when the LOW POWER switch is turned on.
Note:
The LOW POWER switch is used in FM mode only.
5-3. SSB Mode
Reception
On VHF bands, USB is traditionally more often used than LSB. As far as the operating technique is concerned, there is no differente between two. Generally, the “zero- in” technique in SSB mode required a little experience.
For SSB Operation, set the knobs and switches as described in section on “FM Mode”, except that the MODE switch should in USB Position.
Fig. 12 Transmission in SSB Mode | 1 |
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After the settings have been completed, proceed as follows:
1.Turn the POWER switch ON and adjust the AF GAIN knob for suitable loudness.
2.Turn the VFO tuning knob slowly to receive SSB Signal. First set the VFO knob a few kHz lower than the receive frequency (turn the knob counterclockwise) and you will hear a high pitched tone such as is heard from a magnetic recording tape set in the
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