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signal from the KX 125 navigation receiver. The KI 208 converts the composite signal into DC
signals that operate the CDI and TO-OFF-FROM meters.
The KI 208 receives electrical power from the navigation receiver (for example the KX 125). The
OBS selector knob turns the azimuth card. You set the azimuth card to a bearing that the VOR
course can be compared with. The reciprocal course is shown below the bottom course index
marker. A NAV warning flag shows when the VOR or LOC signal is not reliable. It also shows if
the NAV receiver has malfunctioned.
Figure 3: KI 208 VOR, LOC Indicator
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Figure 4: Bendix\King KX 155 NAV COMM
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C. Bendix\King KX 155 NAV COM
Figure 4 shows the KX 155 NAV COM. The KX 155 is a VHF communications transceiver and a
NAV receiver (See Chapter 23-10 for the COMM functions). The equipment can receive NAV
signals from 108.00 MHz to 117.95 MHz in 50 kHz increments. This gives 200 channel
operation.
The unit receives glideslope and NAV signals from the NAV antenna (Refer to Figure 1). A
diplexer on the instrument panel shelf divides the signals. The equipment can also give
VOR\LOC composite output and DME channeling (optional).
The right hand display panel shows NAV frequency data. The left side shows the NAV USE
frequency. The right side shows the STBY frequency.
When the power is off, a non-volatile memory holds the frequency that was last used. A photocell
in the display controls the display brightness.
The KX 155 has these controls:
− An OFF/PULL TEST switch.
− NAV frequency selector knobs.
− A NAV frequency transfer button.
− A PULL IDENT knob.
The OFF/PULL TEST rotary switch controls power to the equipment. The full counter-clockwise
position is OFF. 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/PULL TEST knob
clockwise from the OFF position.
To change the frequency, turn the large frequency selector knob for 1 MHz increments. Turn
the small frequency selector knob for 50 kHz increments. When you turn the selector knobs, the
STBY frequency changes. Push the NAV frequency transfer button to toggle the USE and
STBY frequencies.
If you pull the PULL IDENT knob, you hear both voice and ident signals. If you push the knob in,
you hear only the voice. Turn the knob to control the volume of both signals.
If the equipment finds an in-valid frequency in the non-volatile memory, both USE and STBY
frequencies show 120.00 when power is applied.
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Figure 5: KI 209 VOR, LOC, G/S Indicator
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D. Bendix\King KI 208 VOR, LOC, G/S Indicator
Figure 5 shows the KI 209 VOR, LOC, G/S indicator. The KI 209 indicator receives a composite
signal from the KX 155 navigation receiver. The KI 209 converts the composite signal into DC
signals that operate the CDI and TO-OFF-FROM meters. The KX 155 glideslope receiver
operates the glideslope deviation indicator and warning flag.
The KI 209 receives electrical power from the navigation receiver (for example the KX 155). The
OBS selector knob turns the azimuth card. You set the azimuth card to a bearing that the VOR
course can be compared with. The reciprocal course is shown below the bottom course index
marker.
A NAV warning flag shows when the VOR or LOC signal is not reliable. It also shows if the NAV
receiver has malfunctioned. The glideslope warning flag shows when the glideslope signal is
not reliable. It also shows if the glideslope receiver has malfunctioned.
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Figure 6: KLN 35A GPS
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E. Bendix\King KLN 35A GPS
Figure 4 shows the KLN 35A GPS. The avionics bus supplies power to the KLN 35A. The
GEN/BAT switch and the AVIONICS MASTER switch must be ON to supply power through the
circuit breaker to the GPS. The DIM/BRIGHT switch (located in the instrument panel) controls
the brightness of the display.
The KLN 35A receives signals from an active antenna. The antenna is located behind the
battery box.
The blind altitude encoder provides data to the KLN 35A. Refer to Chapter 34-20 for data about
the altitude encoder. You can up-date the KLN 35A data base though a data loading port. The
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