STi Driver the area of frequency

[Youthan]

Hello.

I'd like to ask about the frequency what STi Driver excatlly search.

I asked about that because my STi recived a false alert at 10.484 GHz.

I know that the X band is between 10.500 GHz and 10.550GHz , so my STi shouldn't recived a signal beyond the X band frequency.


Do you have same similiar experience ?

Or. do You possess some equipment to emission specified frequency radiation to be able to make sure what exactly frequency STi receives ?

I heard that can receive a signal in Ka bands yet from 33.200 GHz ??

Thanx for answer
Youthan

[kpatz]

There's a slight overscan on each side of the band to compensate for the local oscillator drift.

Also, weak signals sometimes cause inaccurate frequency readouts on one extreme or other on the band, for example, the 33.200 on Ka.

[Youthan]

There's a slight overscan on each side of the band to compensate for the local oscillator drift.

Can you tell me how many MHz does this overscan have ?

Does it mean, that if my RD can catch false alert in 10.470 GHz, will be able to catch the gun which operates 15 MHz beyond X band frequency ??

[Ace_Racer]

Can you tell me how many MHz does this overscan have ?

Does it mean, that if my RD can catch false alert in 10.470 GHz, will be able to catch the gun which operates 15 MHz beyond X band frequency ??

Hi Youthan,

I believe it is + or - 30 GHz on either direction.

Ace

[jdong]

I don't think there's an exact number for that -- these detectors are fairly dynamically self-tuning. My hunch is that there's some bandpass filter range corresponding to legit X, K, and Ka areas as it sweeps the LO, and any signal that shows up past these filters are accepted as legit. The frequency display probably uses an entirely separate and independent estimation algorithm for display. i.e. the frequency you see displayed is likely NOT the "frequency" the detector used to sweep and filter.


Bottom line, all we can say is that if a signal is within the specced range, the detector will alert to it if it's working correctly. I don't think we can say much about signals slightly outside the specced range.