Strange - Roadside speed displays not setting off my Valentine 1 radar detector

some use X band is my guess, and most people have x band turned off.

 

Mike- I had the same thing happen with my V1. Turns out that th V1 needed to be recalibrated by Valentine-I had to send it back to them. Check it out before the radar signasl you're not picking up is a roadside cop.

 

I've noticed the same thing with my V1. I didn't worry about it, I figured fewer false alarms is better. It never fails to notice the CHP way in advance, that's my biggest concern around here.

 

I noticed the sensitivity on my V-1 had fallen way off; it no longer lit up like a xmas tree or beeped like crazy in places it formerly did.

Worst of all, it didn't pick up some obvious cop / radar operations.

I sent in back to the factory with a brief letter of explanation, they repaired or updated it (never said what they did) and sent it back, gratis.

Man, there is nothing like a V-1 to save your bacon!

 

How old is your V1? If it's one of the latest gen V1's then it might be "junking" the signal. Or that's what the people at radardetector.net tell me

 

I suspect you are talking about Lyons. Worst part is they set up radar directly behind the display right where the road turns and shoot the gun over the top of the display. Everyone gets used to the false signals and gets hit with the gun. Our neighbor (Boulder PD, just found out the hard way a short time ago.) With the Blue Grass Festival going on I knew the local law would be busy with traffic problems and not praticing their aim.

Dave

 

If so... then mine is also mis-set or out of adjustment.
I noticed these signs did not light up the V1 - likely in the same area you did this weekend. My theory at the time was that the sign was bogus and just making up speeds for display.

 

My V1 always catches those displays... while we're on the topic though, anyone notice that if you go really fast by them (like say you're trying to see how high you can get the number to go ) It simply flashes two dashes? Looks to me like the K band radar might have a hard time picking up speeds if you're accelerating by.

-R

 

Link to info?

 

Mike was it in Lyons? If it was I know my V1 picks up those road side speed checks.

 

I have noticed that too with my V1 here in CT.

 

I don't have a V1, but I do have a passport... it shows many of those signs as X band....

 

Hey Mike on the next Breakfest run we can test your and mine V1 side by side to see whats up.

 

THE SIGN IS A FM-CW (Frequency Modulated Continuous Wave) SPEED SIGN SO YOUR V1 IS NOT SUPPOSED TO ALERT TO IT.


This is according to Mike Valentine himself at Valentine Research.

The failure to alert to a particular speed sign might have one of
several causes:

1) The speed sign may employ an FM-CW modulation technique to sense the direction of vehicles in its field of view. This feature is used to isolate departing from oncoming traffic. The V1 does not recognize FM-CW modulation as a valid police radar signal and tries to reject it. FM-CW is allowed for license-free "Part 15" devices by the FCC. FM-CW is not allowed for police radar. There are numerous traffic-volume sensors using FM-CW spread all around metropolitan areas these days that detector owners would rather not produce an alert. Otherwise freeway driving (in Cincinnati, at least) would be very annoying. It's a good thing that the V1 rejects FM-CW modulated signals.

2) The speed sign may have drifted out of the police radar band from aging or temperature. "Part 15" devices are somewhat notorious for this behavior. Automatic door sensors and Doppler security sensors are both "Part 15" devices, too. Few automatic door sensors use FM-CW because of the added expense. The speed sign devices can afford the added cost of including the FM-CW modulating hardware.

3) The V1 in question may need for our service department to have a
look at it to make sure it is operating correctly."