NAVIGATION AND
COMMUNICATION
AIRPLANE
OPERATIONS
MANUAL
2-18-21
Page
6
Code
01
MARCH 30, 2001
4 - Enter the receive frequency and mode of operation.
Set the desired receive frequency using the four frequency select
knobs. This procedure is identical to tuning a discrete frequency
which has been previously described. The receive frequency will
appear in the FREQ kHz display. Next, select the desired operating
mode (USB, LSB, AM, TEL SUP CAR, or TEL PLT CAR) by pulling
out on the PULL MODE knob and rotating it until the appropriate
mode appears in the MODE display.
5 - Store the receive frequency and mode of operation.
With the desired receive frequency and mode being displayed,
press the PGM button once again to store the data. The CTL-230
display will blank for a short period of time to confirm storage.
6 - Enter and store the transmit frequency.
When the display returns, it will be blinking faster with the transmit
frequency displayed (initially this is the same as the already
programmed receive frequency). At this point, you have
approximately 20 seconds to begin entering the desired transmit
frequency. If no changes are made during the next 20 seconds, the
currently displayed transmit frequency will become invalid and you
will have created a receive-only channel. Set the desired transmit
frequency using the four frequency select knobs. This procedure is
identical to entering the receive described above. With the desired
transmit frequency shown in the FREQ kHz display, press the PGM
button once again to store the data.
As before, the CTL-230 display will blank for a short period of time
to confirm storage. The display will then return to normal with the
new channel data (channel number, mode, and receive frequency)
showing.
7 - Tune the antenna.
Momentarily key the PTT to initiate the antenna coupler tuning
cycle. Adjust the volume (V) and squelch (S) controls, as desired.
NOTE: If additional user channels are to be programmed, repeat
steps 2 through 6 at this time. Ensure that you make and
keep for reference a list of channel numbers, and the
receive and transmit frequencies, as well as the mode of
operation that are programmed on the individual channels.
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