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Page 7-4 LMM for the Kodiak 100
190-02102-00 Rev.4
7.2.2 VHF COM Interference Test
Conduct this test outside. A GPS repeater operating inside a hangar may
result in a failed test. This procedure assumes the system is currently set to
25 kHz COM channel spacing.
1. Monitor GPS signal strength bars on the Aux-GPS Status page (see Figure 7-2).
2. On the PFD, ensure the CDI is set to GPS. It it is not, press the CDI softkey until
GPS ENR is displayed.
3. Make sure the GPS INTEG flag is out of view.
4. Select 121.150 MHz on the COM1 transceiver.
5. Transmit for a period of 35 seconds while monitoring GPS1 signal strength levels.
6. During the transmit period, make sure the GPS INTEG flag does not come into
view on the PFD and that GPS1 does not lose a 3-D navigation solution on the
MFD.
7. Repeat Step 5 and Step 6, and re-transmit while monitoring GPS2 signal levels
on the MFD.
8. Repeat Step 4 through Step 7 for each of the following frequencies:
• 121.175 MHz
• 121.200 MHz
• 131.250 MHz
• 131.275 MHz
• 131.300 MHz
9. Repeat Step 4 through Step 8 for the COM2 transceiver.
10. On the MFD, select the Aux-System Setup page.
11. Under the COM CONFIG field, change the COM channel spacing from 25.0 kHz
to 8.33 kHz.
12. Go back to the AUX-GPS Status page.
13. Select 121.185 MHz on the COM1 transceiver.
14. Transmit for a period of 35 seconds while monitoring GPS1 signal strength levels.
15. During the transmit period, make sure the GPS INTEG flag does not come into
view on the PFD and make sure that GPS1 does not lose a 3-D navigation solu-
tion on the MFD.
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