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Old 04-06-2004, 07:03 PM   #1
Scooby Specialist
Member#: 31816
Join Date: Jan 2003
Default Radar Detector triggers

Just to satisfy some of my curiosities...

Why do those electronic signs that have arrows or letters on the sides of highways (usually interstates) set my radar detector off?
I have a Valentine 1.

Also, when I pass commercial areas a lot of signals get triggered. This is because of microwaves and automatic doors and stuff?

Neon lights also give me a LASER warning on my V1.

samwY is offline   Reply With Quote
Old 04-06-2004, 07:25 PM   #2
Trust no one
Member#: 11170
Join Date: Oct 2001
Chapter/Region: Tri-State
Location: NYC
02 WRX
15 WRX/05 GTO


The signs are triggering the laser detection, I get that all the time with my V1. It's because the light output from the signs has some infrared content in the same wavelength as used by PD laser. Same thing for neon lights, and you'll find other things that do this as well (such as the third brake lights on newer GM SUVs).
Your guess about the radar false alerts is accurate, they are caused by radar-operated motion sensors for doors and alarms.
If you keep your V1 in full-logic mode it will minmize the false radar alerts but won't eliminate them completely.
Mulder is offline   Reply With Quote
Old 04-07-2004, 12:56 AM   #3
Scooby Guru
Member#: 43447
Join Date: Sep 2003
Chapter/Region: MAIC
Location: Herndon, VA
2009 STI
The Good Grey


The signs appear to use K-band around here to determine when they should display their message (vehicle detection).

It costs a lot of power to run those lights, and the signs are solar/battery powered.

Some of them even have the ability to display vehicle speed. One on the DOE complex where I used to work would even calculate your speeding ticket amount...

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