Bendix/King KTR 909A Pilot's Manual - Page 9

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Semi-Duplex Programming

This is available if the semi-duplex option was enabled during installation.
Different transmit and receive frequencies (semi-duplex) may be programmed into
every channel except the Guard. If semi-duplex operation is desired, then perform
the following steps:
•
Press and hold the CHAN button for at least three seconds. The top dis-
play line will flash P01 indicating the programming mode is active on
channel 1.
•
Rotate either the small or the large Frequency/Channel Select Knob to
change the channel number.
•
Momentarily press the MODE button, the frequency display begins to
flash.
•
Rotate the knobs to select the desired transmit frequency, refer to the
Entering a Manual Frequency section (if the channel is not programmed,
the large knob will need to be turned first).
•
Momentarily press the PUSH TONE button to select this frequency as the
transmit frequency.
•
Rotate the knobs to select the desired receive frequency, refer to the
Entering a Manual Frequency section (if the channel is not programmed,
the large knob will need to be turned first).
•
If more channels need to be programmed, press the MODE button and
repeat this procedure.
•
Press the CHAN button or wait ten seconds to exit the programming
mode.
This channel has now been programmed with different transmit and receive
frequencies.

Semi-Duplex to Simplex Conversion

To convert a semi-duplex channel to simplex (transmit and receive frequencies are
the same), perform the following steps:
•
Press and hold the CHAN button for at least three seconds. The top
display line will flash P01 indicating the programming mode is active on
channel 1.
•
Rotate either the small or the large Frequency/Channel Select Knob to
change the channel number.
•
Momentarily press the MODE button, the frequency display begins to
flash.
•
Rotate the large Frequency/Channel Select Knob until the display shows
dashes (between 399 and 225).
•
Momentarily press the PUSH TONE button.
•
Press the CHAN button or wait ten seconds to exit the programming
mode.
The former receive frequency is now the transmit and receive frequency.
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