Ka 33.2

[upstatedoc]

Received this warning on a well know strip of highway via my 8500 x50 blue (the wifey's car). No falses on this strip normally, not a LEO or Cobra to be found...

[djrams80]

Ka band starts at 33.4 GHz. Your alert was over 100 MHz below that. None of my RDs even scan down to 33.2 GHz.

[upstatedoc]

Ka band starts at 33.4 GHz. Your alert was over 100 MHz below that. None of my RDs even scan down to 33.2 GHz.

^^ Yeah, I wonder, maybe it's time for a tune up? The unit is almost three years old.

[djrams80]

^^ Yeah, I wonder, maybe it's time for a tune up? The unit is almost three years old.

I don't own an X50, so I have no idea how much they are supposed to overshoot the Ka band. Maybe it's normal.

[METEORIC]

My X-50 reported something below 33.4, but I cannot remember how low it was. I am thinking that it was around 33.3, but it was a long time ago.

[QuickCummins]

i had a ka 33.3??? today

[dpatel01]

I had a quick 33.200 last night but it wasn't the first time. In an earlier instance I recall it quickly changed to 35.5xx and the encounter last night it was against a usual speed sign I drive by and it changed from 33.200 to 34.7xx a second or two after the initial encounter.

Sometimes my X50 reports K-band down to 24.000 and as high as 24.300 but the alerts havent lasted very long.

[jimbonzzz]

For some reason, most Belscort detectors will display 33.2 for a 35.5 radar source on occasion.

[DidacticSlip]

The specs say (escortradar.com):

Operating Bands
X-band 10.525 GHz ± 25 MHz
K-band 24.150 GHz ± 100 MHz
Ka-band 34.700 GHz ± 1300 MHz
Laser 904nm, 33 MHz Bandwidth

So if I'm doing my math right, Ka should normally scan between 33.4 and 36.0 Ghz.

However, 200 Mhz is not much on a microwave receiver, and it would make sense for the detector to actually scan a bit outside the nominal bandwidths. Better that than missing an in-band alert.

Is it really cold where you are? I'm wondering if the temperature might be affecting it temporarily. Along the lines of what's already been stated, it would make sense for a harmonic of 35.5 to be alerting at 33.2.

Unless it starts doing weird things all the time, I wouldn't worry about it.

[upstatedoc]

[quote=DidacticSlip;494003]
Is it really cold where you are?quote]

^^ It's been arctic here for over a week, - 4 this am on the way to work.