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16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
SPLIT switch:
Selects the relationship of the two VFO' 5. In the out position, one VFO is for both transmit
and receive. In the SPLIT (in) position, the VFO selected by the VFO select switch is for
receive and the other is for transmit.
Squelch control and low power switch:
Turning this control clockwise sets the squelch threshold higher. To turn OFF the squelch
function, turn this control completely counterclockwise. As squelch circuit performs Auto
Stop detection during scaning, this control should be ata position where no noise is heard
during scanning.
By pulling the squelch control knob, the RF output power is reduced to 0.5 watts when the
power amp switch is in the 3W position. These functions activate in any mode.
Memory Scan switch:
Activates Memory Scan function to search memory channels M1 to M6 in sequence.
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.
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Program Scan switch:
Activates Program Scan function to continuously search the range of frequencies stored
in M1 and М2 at their corresponding scanning rate.
Mode select switch:
Selects any desired operation. mode.
NOTE:
Although the SSB has both USB and LSB, USBi is more commonly used on the 50
. .
MHz band.
FM operating Aps
an optional FM unit.
Mic connector:
Connect the supplied microphone to this jack. Optional Desk Microphone (ІС-5М5) and
Up/Down
Microphone (IC-HM11) can also be connected.
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NOTE:
Only а microphone with a built-in preamp can be used with this mic connector.
Key jack:
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Connect key in CW mode. Use the supplied key plug.
Phones jack:
Connect an 22695597 еагрһопе ог ап ехїегпа! speaker. Use supplied speaker plug.
Noise blanker (NB) switch:
In receive mode, turn on NB switch to cut pulse-type noise such
i as automobile ignition
noise. Note that the noise blanker circuit operates only in SSB and CW modes.
Rod antenna:
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Fully extend the 1.5 m antenna when
using it in operating the 1С-505. When
using ап
external antenna, fully retract rod antenna.
_
CAUTION:
Use an antenna matched in impedance with the IC-505 when operating itin
10 watt output mode.
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