Installation Instructions

GTN 6XX/7XX AML STC Installation Manual 190-01007-A3
Page 5-38 Rev. 4
5.5.2.3 COM Transmit Power
When the optional 16W COM power is configured, the GTN COM will transmit with 16 watts rather than
the standard 10 watts. 16W COM transmit power should be enabled for aircraft certified to fly above
FL180. This section describes how to enable the 16W COM transmit power.
NOTE
The 16W COM Enablement must only be used in 28V installations.
NOTE
The 16W COM Enablement Card can only be used on one GTN (for dual GTN
installations a separate Enablement Card must be used on each GTN). A new 16W
COM Enablement Card must be used for each GTN that has the 16W COM feature
activated.
1. Turn the GTN off by pulling the circuit breaker.
2. Remove the database SD card from the SD card slot
and insert a 16W Enablement Card,
P/N 010-00878-04.
3. Enter configuration mode by applying power to the
GTN (closing the circuit breaker) while holding the
HOME key.
4. Go to the COM Transmit Power page from the GTN
Options page. Touch the 16W key.
5. A window will appear with ‘Enable 16W COM? This
will consume a feature unlock key when selected.’
6. Touch Yes to enable 16W COM.
7. When the 16W COM feature is activated, the 16W
key will be lit green, as shown in Figure 5-23.
Figure 5-23.
COM Transmit Power
Configuration Page