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carter840
02-05-2007, 02:18 PM
Looking at the speed trap section i noticed that suffolk county (NY) highway patrol uses Xband or so it says. I didn't know this was true and have Xband turned off on my detector. If they where to be using Xband what frequecy would it be. I ask becuase i normaly drive throught there at night so i can't see the cars and this way i will know if it is a flase or if it is real.
thanks

proudNMAmember
02-05-2007, 02:40 PM
The frequency for x band is 10.525 mhz.

carter840
02-05-2007, 02:43 PM
Are we sure that is the only one in use?
thanks

jimbonzzz
02-05-2007, 03:05 PM
ANY X-Band that your detector alerts to is potentially police radar.

Any X-Band radar gun is considered in spec if it is between 10.500-10,550 GHz. Most detectors sweep a bit beyond this band in order to compensate for oscillator drift in the detector. Although the guns are set to 10.525 GHz at the factory or during calibration, they drift around over time, temperature, etc.

Think about it: If you could determine a false alert based on frequency alone, why would the detector even alert to it in the first place?

Here's a post I made about this a while ago that applies here:

X and K Band police radar uses the same frequency range as microwave motion sensors. So, Tech Mode won't help you determine false alerts on these bands at all. Anything the detector alerts to is potentially police radar.

Although Ka false alerts are generally rare, they sometimes occur from leakage from cheap detectors. If the alert isn't in the bandpass of one of the Ka radars used in the USA (33.8, 34.7, or 35.5 GHz +/- 100 MHz) then it is more likely to be a false alert. But before you stomp the gas again, be very cautious about relying on this: Tech Mode has been known to be wrong before. Sometimes the detectors can lock on to an "image frequency" instead of the actual radar source and display a frequency outside one of these ranges, occasionally it even displays a frequency that is completely outside of the superwide police Ka band. Though it is great for a feature in a detector, it isn't a precision frequency counter. Under normal operation, testing has shown that the frequency displayed can be up to 30 MHz off from the actual frequency of the radar source. Two detectors often display a different frequency for the same radar source.

Remember: anything the detector alerts to could potentially be police radar. Your best bet is to be cautious and look for a source (if possible) before resuming speed.

proudNMAmember
02-05-2007, 03:47 PM
Thanks jim for completing my post in terms of all the x band frequencies. Show them to alpinestars please (joking).

carter840
02-05-2007, 04:34 PM
perfect thanks a lot.