What freq's do cobra's give off?

[Audi Quattro]

to set off our RD's?

[jimbonzzz]

Cobras might leak a variety of frequencies because of the sweeping LO. But, they periodically "park" during their sweep at different intervals, this causes much of the interference.

The majority of the leakage is on the following freqs:

9 Band models = 12.180 GHz (Produces harmonics at 24.36 and 36.54 GHz)
10 Band models = 11.350 GHz (Produces harmonics at 22.7 GHz and 34.05 GHz)
11 Band Models = 11.1 GHz (Produces harmonics at 22.2 and 33.3 Ghz) and 10.950 GHz (Produces harmonics at 21.9 GHz and 32.85 GHz)

Even if a harmonic is slightly outside the police radar band, it still might be detected as police radar, since all detectors scan slightly beyond the police radar bands to compensate for oscillator drift.

[Audi Quattro]

thx

[Arashi666]

Cobras might leak a variety of frequencies because of the sweeping LO. But, they periodically "park" during their sweep at different intervals, this causes much of the interference.

The majority of the leakage is on the following freqs:

9 Band models = 12.180 GHz (Produces harmonics at 24.36 and 36.54 GHz)
10 Band models = 11.350 GHz (Produces harmonics at 22.7 GHz and 34.05 GHz)
11 Band Models = 11.1 GHz (Produces harmonics at 22.2 and 33.3 Ghz) and 10.950 GHz (Produces harmonics at 21.9 GHz and 32.85 GHz)

Even if a harmonic is slightly outside the police radar band, it still might be detected as police radar, since all detectors scan slightly beyond the police radar bands to compensate for oscillator drift.

so basically sitting somewhere between X and Ku ranges, but then why do some report that Cobras set off their Ka sensors???

[DogGod]

I have never had a K false from a Cobra.

[Arashi666]

I have never had a K false from a Cobra.

some say they have had Ka falses off Cobras, I havent but its been around

[SmaartAasSaabr]

Harmonics

[kpatz]

so basically sitting somewhere between X and Ku ranges, but then why do some report that Cobras set off their Ka sensors???

See the frequencies I highlighted in bold below. These fall within the Ka band:

The majority of the leakage is on the following freqs:

9 Band models = 12.180 GHz (Produces harmonics at 24.36 and 36.54 GHz (slightly outside Ka but could still be picked up by some RDs))
10 Band models = 11.350 GHz (Produces harmonics at 22.7 GHz and 34.05 GHz)
11 Band Models = 11.1 GHz (Produces harmonics at 22.2 and 33.3 Ghz) and 10.950 GHz (Produces harmonics at 21.9 GHz and 32.85 GHz (outside but near Ka, could set off some RDs))

[Arashi666]

so basically sitting somewhere between X and Ku ranges, but then why do some report that Cobras set off their Ka sensors???

See the frequencies I highlighted in bold below. These fall within the Ka band:

The majority of the leakage is on the following freqs:

9 Band models = 12.180 GHz (Produces harmonics at 24.36 and 36.54 GHz (slightly outside Ka but could still be picked up by some RDs))
10 Band models = 11.350 GHz (Produces harmonics at 22.7 GHz and 34.05 GHz)
11 Band Models = 11.1 GHz (Produces harmonics at 22.2 and 33.3 Ghz) and 10.950 GHz (Produces harmonics at 21.9 GHz and 32.85 GHz (outside but near Ka, could set off some RDs))

oops........ sorry, missed that, gotta pay more attention.... :P

[cooljay]

I've picked up Cobras in both the K and Ka band. I'm not complaining because it means my RD is sensitive which I like and I can tell 99% of the time when it's a crapra causing my RD to go off.

I've also noticed my Whistler will "mute" out a false if a real LEO is around, which I love and I didn't even think would happen. Call me crazy? I don't know but just reporting personal experinces. Going to have to get a camera so I can start sharing my experinces with ya'll :wink: