BendixKing KXP 756 - Manual (Page 38)

37
Channel/Frequency Select
This selector consists of two
concentric knobs that controls the
channel and frequency digits, plus the
lateral position of the cursor. These
switches function as Frequency
Control switches.
Channel Control
The outer knob is not functional
when the FREQ/CHAN switch is in
the CHAN position. The inner knob
will provide channel control from 1
through 99.
Frequency Control
The outer concentric knob
becomes a cursor (flashing light)
control with the FREQ/CHAN switch
in the FREQ position. Rotation of the
outer knob in a counterclockwise
direction, one step will cause the right
digit to flash. The flashing digit can be
increased or decreased with the inner
knob with rollover to 0 or 9 or optional
automatic carry or borrow to those
digits more significant than the cursor
digit. A clockwise rotation of the
outer knob will cause the cursor
(flashing digit) to move in a left to
right direction. The Tens megahertz
digit cannot be selected. The units
digit selects frequencies from 2 to
29MHz in 1MHz steps with rollover
from 2 to 29MHz and 29 to 2MHz.
Program (PGM) Switch
This switch enables channelized
data to be modified. The PGM
message will be displayed whenever
this switch is depressed.
Store (STO) Switch
This switch is used to store the
displayed data when programming
the preset channels.
System Power Up
When power is first applied
(OFF/ON VOL CONTROL), the
frequency display is blanked and
transmit is inhibited until the crystal
oven is heated up and synthesizer is
locked. If the FREQ/CHAN button is
in the depressed position, the active
channel will be displayed. The active
channel would be the last channel
used on transmit prior to system turn
off. The auto coupler is switched to
the “bypassed” state. The system is
functioning as a receiver connected
directly to the HF antenna.
The receiver frequency will
appear on the display (approximately
1-3 minutes after turn on) upon
synthesizer lockup and oven warm up.
The time delay will depend on the
temperature of the crystal oven at turn
on.
Depressing the mic key button
momentarily will initiate the coupler
auto tune sequence. Frequency will
again be blanked during the auto tune
cycle, the TX message will also flash.
Emission mode and channel number
will continue to be displayed. Active
frequency will reappear upon
completion of the coupler tune
sequence.
Channel Operation
Channel number, emission mode
and active frequency will be displayed.
When operating in the optional A3A
mode the AM and USB messages are
both illuminated. When transmitting in
the channel mode, the transmit
frequency and an added TX message
will be displayed. Rotation of the inner
control knob causes the channel
number to be increased or