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receive COMM signals from 118.00 MHz to 136.975 MHz in 25 kHz increments. This gives 760
channel operation.
The KLX 135\135A has these controls:
− An OFF/VOL/PULL TEST switch.
− COMM frequency selector knobs.
− A COMM frequency transfer button.
The OFF/VOL/PULL TEST rotary switch controls power to the equipment. The full counterclockwise
position is OFF. Movement clockwise gives volume control. The KLX 135\135A has
automatic squelch. Pull the switch to cancel the squelch for test purposes.
The press-to-transmit buttons on the pilot’s control sticks (or hand mic) control the transmitter.
The transmitter can be keyed for a continuous period of 35 seconds. After 35 seconds the
transmitter stops transmitting and the COMM frequency display flashes the message ‘Stuck Mic’.
This gives protection against a sticking mic key (press-to-transmit button). Releasing the mic
key returns to the usual operation.
When the equipment transmits, a TX annunciator comes on next to the COMM USE frequency.
To change the frequency, turn the left-outer frequency selector knob for 1 MHz increments.
Turn the left-inner frequency selector knob for 50 kHz increments. Pull the left-inner knob out to
set 25 kHz increments.
To operate the unit set the GEN/BAT switch and AVIONICS MASTER switch to ON. The related
circuit-breakers must be closed. Turn the COMM OFF/VOL/PULL TEST knob clockwise from
the OFF position. The display will show the frequency last stored in the non-volatile memory.
The DIM/BRIGHT switch (located on the instrument panel) controls the brightness of the display.
See the operators handbook provided with the equipment for further data.
Communications
DA20-C1 AMM
Page 6
30 Apr 2009 23-10-00 Doc # DA201-C1
Rev. 15
Figure 4: GARMIN GNS430W COMM
DA20-C1 AMM
Communications
Doc # DA201-C1
Rev. 15 23-10-00 Page 7
30 Apr 2009
C. GARMIN GPS COMM
(1) GNS430W
The GNS430W is a VHF communications transceiver and a GPS receiver (Refer to Chapter
34-50 for the GPS functions). It also includes the a TSO’d airborne VOR/Localizer and
Glideslope receivers. It has two removable data cards, one with a Jeppesen database
(inserted in the left-most card slot) and the other the Terrain database (inserted in the rightmost
card slot).
The equipment can receive COMM signals from 118.00 MHz to 136.975 MHz in 25 kHz
increments. This gives 760 channel operations. The GNS430W is 6.25 in wide and 2.66 in.
high. The display is a 240 x by 128 pixel color LCD. See Figure 4.
The GNS430W has these controls:
(a) Left-Hand Keys and Knobs
COM Power/Volume Knob - controls unit power and communications radio volume. To
override the squelch function, press the COM power/volume knob.
VLOC Volume Knob – controls audio volume for the selected VOR/Localizer frequency.
Large (Outer) Left Knob – is use to tune the MHz value of the standby frequency for the
communications transceiver (COM) or the VLOC receiver.
Small (Inner) Left Knob – is use to tune kHz value of the standby frequency for the
communications transceiver (COM) or the VLOC receiver.
COMM Flip-Flop Key – is use to swap the active and standby COM frequencies.
VLOC Flip-Flop Key – is use to swap the active and standby VLOC frequencies.
(b) Right Hand Keys and Knobs
Refer to Chapter 34-50 for the GPS functions
To operate the unit set the GEN/BAT switch and AVIONICS MASTER switch to ON. The
related circuit-breakers must be closed. Turn the COM Power/Volume knob clockwise from
the OFF position. The display will show the frequency last stored in the non-volatile memory.
The DIM/BRIGHT switch (located on the instrument panel) controls the brightness of the
display.
Refer to the operators handbook provided with the equipment for additional information.
Communications
DA20-C1 AMM
Page 8
30 Apr 2009 23-10-00 Doc # DA201-C1
Rev. 15
Figure 5: GNS530W GPS COMM
DA20-C1 AMM
Communications
Doc # DA201-C1
Rev. 15 23-10-00 Page 9
30 Apr 2009
(2) GNS530W
The GNS530W is a VHF communications transceiver and a GPS receiver (Refer to Chapter
34-50 for the GPS functions). It also includes the a TSO’d airborne VOR/Localizer and
Glideslope receivers. It has two removable data cards, one with a Jeppesen database
(inserted in the left-most card slot) and the other the Terrain database (inserted in the rightmost
card slot).
The equipment can receive COMM signals from 118.00 MHz to 136.975 MHz in 25 kHz
increments. This gives 760 channel operations. The GNS530W is 6.25 in wide and 4.60 in.
high. The display is a 320 x by 2348 pixel color LCD. See Figure 5.
　
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