Section Vi Operation - Icom IC-502A Instruction Manual

SECTION VI OPERATION -
After the batteries have been installed, or the IC-502A is connected to an external source,
turn the function switch ON. If the surrounding light is too dim to see the S & SR meter, turn
the switch to the LIGHT position, and the meter will be illuminated.
Extend the whip antenna to its full length, or if you wish to use an external antenna, connect
the cable to the EXT antenna connector on the back of the IC-502A.
Connect the microphone to the MIC connector on the front panel.
If you wish to use the CW mode of transmission, connect a key to the KEY jack on the front
panel. You do not have to disconnect the microphone for CW operation.
Key Wiring Diagram
Turn the tuning knob and the fine tuning knob until you reach the desired frequency or a
signal is heard. Adjust the volume control for a comfortable level of listening. If operating
SSB, you may wish to place the Noise Blanking switch in the NB position. This activates the
noise blanking circuit which will supress noise pulses. After selecting the operating frequency,
if the received signal seems to drift, adjust the RIT control until the signal is again clear. Avoid
adjusting the fine tuning knob for this purpose, as to do so will also change your transmitting
frequency. | | \
For SSB operation, hold the microphone close to your mouth, push the PTT switch on the
microphone, and speak in a clear normal tone of voice. To receive release the PTT switch.
For CW operation, after connection of your KEY, place the Mode switch in the CW-T position
and the ІС-502А will transmit when the KEY contacts are closed. To receive, place the switch
back in the REC position.