Garmin GNC 420 - Manual (Page 34)

GNC 420(A) Pilot’s Guide and Reference 2-6
SECTION 2
COM
Stuck Microphone
As mentioned previously in this section, when the GNC
420 is transmitting, a ‘TX’ indication appears in the COM
Window. If the microphone key is stuck, or accidentally
left in the on position, or the microphone continues to
transmit after the key is released; the COM transmitter
automatically times out (ceases transmitting) after 35
seconds of continuous broadcasting. A ‘COM push-to-
talk key stuck’ message (Figure 2-11) is displayed as long
as the condition continues.
Figure 2-11 Message Page
190-00140-20 Rev. K