M-20 pilot reported fatigue contributing to distraction and using the incorrect frequency.

Attributes
ACN	1687228
Time
Date	201909
Local Time Of Day	1801-2400
Place
Locale Reference	VNC.Airport
State Reference	FL
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	M-20 Series Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Route In Use	Visual Approach
Flight Plan	IFR
Person 1
Function	Single Pilot
Qualification	Flight Crew Instrument Flight Crew Private
Experience	Flight Crew Last 90 Days 60 Flight Crew Total 3299 Flight Crew Type 3299
Events
Anomaly	Conflict Ground Conflict Critical Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT
Miss Distance	Vertical 30

Narrative:

Fatigue-final landing after 11 hours of flying. Unable to activate runway lights. Assumed lights were defective. Turned off ipad with synthetic vision due to brightness. Began approach to runway 5 with VFR guidance from GPS. Focused on 2 bright white lights which were from a golf practice range next to runway 5 and I thought that they were VASI lights. Golf range had 60 ft. Poles with netting to trap golf balls. None of the poles had a red light. Passing through 100 ft. Turned right to land on runway 5. Discovered on taxiing that I had 120.72 instead of 122.72 tuned in to activate the lights.

Original NASA ASRS Text

Title: M-20 pilot reported fatigue contributing to distraction and using the incorrect frequency.

Narrative: Fatigue-final landing after 11 hours of flying. Unable to activate runway lights. Assumed lights were defective. Turned off iPad with synthetic vision due to brightness. Began approach to Runway 5 with VFR guidance from GPS. Focused on 2 bright white lights which were from a golf practice range next to Runway 5 and I thought that they were VASI lights. Golf range had 60 ft. poles with netting to trap golf balls. None of the poles had a red light. Passing through 100 ft. turned right to land on Runway 5. Discovered on taxiing that I had 120.72 instead of 122.72 tuned in to activate the lights.

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.