Student pilot on cross country flight temporarily lost contact with ATC.

Attributes
ACN	1356000
Time
Date	201605
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Small Aircraft High Wing 1 Eng Fixed Gear
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	Direct
Flight Plan	None
Aircraft 2
Make Model Name	Small Aircraft Low Wing 1 Eng Retractable Gear
Flight Phase	Cruise
Person 1
Function	Single Pilot
Qualification	Flight Crew Student
Experience	Flight Crew Last 90 Days 25 Flight Crew Total 220 Flight Crew Type 25
Events
Anomaly	Aircraft Equipment Problem Less Severe Conflict NMAC Deviation - Procedural Published Material / Policy
Miss Distance	Horizontal 100 Vertical 100

Narrative:

Flying a cross country solo student training flight from. While checking weather at the destination; I selected the Comm2 function on the G1000 and didn't realize that I'd turned off the Comm1 radio where I had been monitoring flight following. TCAS activated with a warning of traffic and I observed [another aircraft] cross from my right to left approximately 100 ft above my altitude. I was wondering why that traffic hadn't been called out to me when I realized that my Comm1 radio had been turned off. Approach contacted me and said they'd been trying to contact me for the last 20 miles. Obviously a situation where my attention to the radios needs to be improved.

Original NASA ASRS Text

Title: Student pilot on cross country flight temporarily lost contact with ATC.

Narrative: Flying a cross country solo student training flight from. While checking weather at the destination; I selected the Comm2 function on the G1000 and didn't realize that I'd turned off the Comm1 radio where I had been monitoring Flight Following. TCAS activated with a warning of traffic and I observed [another aircraft] cross from my right to left approximately 100 ft above my altitude. I was wondering why that traffic hadn't been called out to me when I realized that my Comm1 radio had been turned off. Approach contacted me and said they'd been trying to contact me for the last 20 miles. Obviously a situation where my attention to the radios needs to be improved.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.