VG-2 in plain language
VG-2 is a system designed to detect emissions from some radar detectors. It is different from a police radar gun, which measures vehicle speed.
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Guide
What Is VG-2 on a Radar Detector and What Does It Do?
VG-2 is a radar detector detector system. A detector’s VG-2 setting concerns that system, not police radar detection or universal stealth.
What a VG-2 alert means
An alert means the detector believes it encountered VG-2 activity according to its sensing and alert logic. Check the manual for the exact meaning and response.
What VG-2 immunity does not mean
A feature described as VG-2 immunity is specific to VG-2. It does not prove that the detector cannot be identified by every RDD or in every condition.
VG-2 versus Ka band
Ka is a radar frequency band; VG-2 is an RDD system. A Ka alert and a VG-2 alert refer to different signal sources.
Check the law first
Detector legality varies by jurisdiction and vehicle type. Federal rules bar detectors in commercial motor vehicles, and interference equipment is treated separately.
Common questions
Questions before you buy
What does VG-2 mean on a radar detector?
VG-2 refers to an RDD system that looks for emissions from some radar detectors.
Does VG-2 detect police radar?
No. VG-2 looks for detector emissions, while police radar measures vehicle speed.
What does VG-2 immunity mean?
It describes a detector’s response to VG-2 as specified by its maker; it does not establish immunity to every RDD.
Should I turn VG-2 on or off?
Use the setting described in your model’s manual and follow local law. Options vary by detector.
Sources and how we chose
- Uniden R8 product information · 2026-10-15
- ESCORT product help and manuals · 2026-10-15
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