Mic Connector - Icom IC260-A Instruction Manual

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Pushing the tuning speed switch IN, and rotating the tuning knob will result in changing the
frequency in 1KHz steps in any mode. This button will allow you to quickly OSY over a great
frequency range in SSB and CW and to tune in FM signals which are off from 5KHz-step
frequencies.
. NB (NOISE BLANKER) SWITCH
When pulse type noise such as automobile ignition noise is present, set this switch to the ON
(locked in) position. The noise will be reduced to provide comfortable reception.
(The Noise Blanker does not activate in the FM mode.)
. VFO GANG SWITCH
Selects the relationship between "A" VFO and "В" VFO. іп the GANG (up) position,
the second VFO will follow the selected VFO at the same frequency difference they were set
at. In the SEP (locked in) position, "А" VFO and "В" VFO do not have a relationship, and
both МЕО" сап be used independently.
. AGC (AUTOMATIC GAIN CONTROL) SWITCH
With this switch you can select the time constant of the AGC circuit. With the switch in the
AGC (up) position, the AGC voltage is released slowly, and thus is suitable for SSB reception.
With the switch in the FAST (locked in) position, the AGC voltage is released faster, and the
AGC is suitable for stations suffering from fast fading or when operating in the CW mode.
(The AGC circuit does not activate in the FM mode.)
VOLUME CONTROL and POWER SWITCH
When the control is turned completely counterclockwise, the power is OFF. By turning the
control clockwise beyond the "click", the unit is turned ON and the audio level increases by
further rotating it clockwise.
SQUELCH CONTROL and RF POWER SWITCH
Turning this control clockwise sets the squelch threshold higher. To turn OFF the squelch
function, turn this control completely counterclockwise.
By pulling the Squelch control knob, the RF output power is reduced to 1 watt. By depress-
ing the knob to the normal position, the RF output power returns to 10 watts.
MIC CONNECTOR
Connect the supplied microphone to this jack. If you wish to use a different microphone,
refer to the drawing on page 7.
VFO/MEMORY SWITCH
Selects operation with the tuning control ("А апа "B" positions) or operation with the
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