BendixKing KLX 135A - Pilots Guide - Manual (Page 134)

5.5 BLIND TUNING FEATURE
Turning the unit on while holding the flip-flop (
A
) button will bring
the KLX 135A up in the active frequency entry mode,
automatically loading 120.00 MHz into the active
COMM frequency (figure 5-12). This allows the pilot to
“blind-tune” the radio in the event of a display failure.
The COMM standby frequency will also be 120.00 MHz, although it is
not displayed during active entry.
To accurately tune the active frequency on the COMM, count up 1
MHz for each clockwise click of the left outer knob, and down 1 MHz
for each counterclockwise click of the knob. Similary, count up or
down 50 kHz or 25 kHz per click of the left inner knob, depending on
whether it is pushed in or pulled out, respectively.
IMPORTANT NOTE: In order to have the ability to change the
COMM frequency, the pages of the turn-on sequence (Self-Test,
Initialization, VFR, and Data Base) must be approved. Hold the
A
button down for about two seconds after appliying power to the KLX
135A. Then, wait about 20 seconds and press the
F
button four
times to approve these pages.
KLX 135A Pilot’s Guide COMM Operation
5-5 Effective Date 5/95 006-08789-0000 Rev 0
COMM Operation
Chapter 5
120.00
>Leg
Figure 5-12