Frequency display accuracy?

[o2bad455]

How accurate is it, such as for a Bel STi in tech mode? For example, if it displays 34.723 GHz, but the LEO produces a calibration certificate showing 34.665, how likely is it that the calibration certificate is for a different radar unit?

[djrams80]

How accurate is it, such as for a Bel STi in tech mode? For example, if it displays 34.723 GHz, but the LEO produces a calibration certificate showing 34.665, how likely is it that the calibration certificate is for a different radar unit?

There is no way an STi that is working properly would be off by that much.

[hockey005]

x2 DJ...also it may be off by the hundredths digit or something little but ur def gonna be able to tell if its MPH Ka 33.8, stalker Ka 34.7, or Kustom Ka 35.5

[erickonphoenix]

I believe the professor posted once that the signal can variate by +/- 100.

That said. My frequency on DPS is always Ka 34.747

[focalcivic]

Spec/Tech display will never be 100% accurate but pretty close. I use it as a guide but it should never be relied on all the time. It is good say you pass a X band every day at the same time, look at the spec display and if the number matches every time you will know it is a false.

Just so you know, typical K band averages around 24.150, but many door openers I pass are dead on to that freq, so in that case you need to use common sense.

[BlinderGuy]

I was wondering what the typical frequency display is for K band....I get them all over frequency range and can not tell what is real or false.

[jdong]

I was wondering what the typical frequency display is for K band....I get them all over frequency range and can not tell what is real or false.

That's because you can get K-band anywhere within that range. The spec meter is not designed to be used to guess if a signal is real or false. There's a reason why detectors detect the ranges they do.

[focalcivic]

I was wondering what the typical frequency display is for K band....I get them all over frequency range and can not tell what is real or false.

Base Marks:

X 10.525 I have seen as high as 10.538 as real

k 24.150 I have seen as high as 24.176 as real

ka 33.8
34.7
35.5

[jimbonzzz]

X2... if detectors could tell 100% the difference between a real alert and a false based on frequency alone, then they wouldn't alert to the falses in the first place.

In my testing, the frequency display on the Belscorts are reasonably accure, but they do have their limitations. For example, they can only display 7-8 "segments" for the entire K-Band, so worst case they could be off by 30 MHz or so, best case they could be right on, it just depends on the circumstances. For Ka, there might be a bit more room for error, but not a whole lot...

For reference, here is the 9500i testing:
http://www.radardetector.net/forums/...q-counter.html

However, that isn't all that relevant for o2bad455's example. Since the radar units drift over time and temperature, it should be considered no surprise that there would be a measurable frequency difference between a frequency recorded on a bench during calibration weeks or months ago, and am live unit operating in a patrol car.

[MEM-TEK]

There is no way an STi that is working properly would be off by that much.

I agree 100%. The M3 platform is extremely accurate -- especially at the center of the Ka band spectrum. I do know how accurate it is but can't disclose this info. Lets just say that it is way more accurate than the example shown in the first post of this thread.