STi-R - where the detector detects Ka-band?

[Snail]

Hi.
Recently I bought and mounted STi-R detector into the Mercedes GL and I need to know which side detects Ka-band. I can't insert a picture here, please insert someone here image of STi-R with a description of which side detects Ka-band.
Radars in the Czech Republic have very little power and I need to install the part which is detecting Ka-band up to where the detector has a better view.
Thanks

[djrams80]

Here's an internal picture of the Belscort M3 antenna. When right-side up, the horns are positioned like this.

[Snail]

Thanks, I test to turn the antenna 180 degrees and the detection had improved slightly (overall is excellent, but everything can be better)