9500ci Going Deaf to X-Band?

[swarga]

There are a couple of shopping centers near my house that I use for testing because they have lots of radar sources. While playing with the Expert Meter mode on my 9500ci I have been going to this one particular parking lot because it has at least 4 X-Band sources so the Expert Meter will show 4 X signal bars - at least is was until last night.

Last night I drove to that parking lot and got nothing on X-Band. The usual K-Band false was there, but X was completely silent. That's never happened before; I always pick up X-Band when I drive past. Unfortunately I didn't have my V1 with me at the time.

So tonight I went back and this time I brought my V1. With the V1 turned off, I was picking up 2 X-Band sources. Better than the previous night's 0, but still short of the usual 4. Then I turned the V1 on; its bogey counter immediately registered 5-6 bogeys on X and K. So it appears my 9500ci is going deaf on X-Band. AFAICT K and Ka are unaffected.

In all cases the 9500ci was running in Highway mode with GPS filtering turned off, so none of the received signals should have been filtered out.

[djrams80]

Maybe some of the doors are turned off at night?

[CJR238]

Maybe some of the doors are turned off at night?

X2, and Expert mode tends to weed out the X band garbage/ghosting usually.

[Cips]

Maybe some of the doors are turned off at night?

He said he brought the V1 with him and it registered 5-6 bogeys.

Maybe some of the doors are turned off at night?

X2, and Expert mode tends to weed out the X band garbage/ghosting usually.

In Expert mode it won't even show the X band 'garbage' alerts?

[djrams80]

Maybe some of the doors are turned off at night?

He said he brought the V1 with him and it registered 5-6 bogeys.

Yeah, that was a different night and he wasn't able to specify how many of those contacts were X band and how many of them were K band. On that night, the 9500ci showed 2 X band radar contacts. My guess is that the V1 uses much tighter frequency blocks for determining how many radar contacts are present. The tighter blocks is why the V1 tends to ghost and the looser blocks is why the Escorts tends to under-report radar contacts.

[CJR238]

Maybe some of the doors are turned off at night?

X2, and Expert mode tends to weed out the X band garbage/ghosting usually.

In Expert mode it won't even show the X band 'garbage' alerts?

no, it will, but not as many like the V1, because of what DJ mentioned above.

[swarga]

DJ is right, I don't know for sure that they didn't just turn off some of the door openers on that particular night.

Grueling as it will be, I'm just going to have to go back again and collect some more data.

[BuickGN]

There are a couple of shopping centers near my house that I use for testing because they have lots of radar sources. While playing with the Expert Meter mode on my 9500ci I have been going to this one particular parking lot because it has at least 4 X-Band sources so the Expert Meter will show 4 X signal bars - at least is was until last night.

Last night I drove to that parking lot and got nothing on X-Band. The usual K-Band false was there, but X was completely silent. That's never happened before; I always pick up X-Band when I drive past. Unfortunately I didn't have my V1 with me at the time.

So tonight I went back and this time I brought my V1. With the V1 turned off, I was picking up 2 X-Band sources. Better than the previous night's 0, but still short of the usual 4. Then I turned the V1 on; its bogey counter immediately registered 5-6 bogeys on X and K. So it appears my 9500ci is going deaf on X-Band. AFAICT K and Ka are unaffected.

In all cases the 9500ci was running in Highway mode with GPS filtering turned off, so none of the received signals should have been filtered out.

This detector has a learn function in which if you pass the same place with the same false alerts three times he won't go off anymore when you go by those places. You do know that right?

[swarga]

In all cases the 9500ci was running in Highway mode with GPS filtering turned off, so none of the received signals should have been filtered out.

This detector has a learn function in which if you pass the same place with the same false alerts three times he won't go off anymore when you go by those places. You do know that right?

I'm sorry, what did you say?

[snoopyc4]

There are a couple of shopping centers near my house that I use for testing because they have lots of radar sources. While playing with the Expert Meter mode on my 9500ci I have been going to this one particular parking lot because it has at least 4 X-Band sources so the Expert Meter will show 4 X signal bars - at least is was until last night.

Last night I drove to that parking lot and got nothing on X-Band. The usual K-Band false was there, but X was completely silent. That's never happened before; I always pick up X-Band when I drive past. Unfortunately I didn't have my V1 with me at the time.

So tonight I went back and this time I brought my V1. With the V1 turned off, I was picking up 2 X-Band sources. Better than the previous night's 0, but still short of the usual 4. Then I turned the V1 on; its bogey counter immediately registered 5-6 bogeys on X and K. So it appears my 9500ci is going deaf on X-Band. AFAICT K and Ka are unaffected.

In all cases the 9500ci was running in Highway mode with GPS filtering turned off, so none of the received signals should have been filtered out.

This detector has a learn function in which if you pass the same place with the same false alerts three times he won't go off anymore when you go by those places. You do know that right?

That "learn" function (Truelock) can be deadly:

http://www.radardetector.net/forums/...me-ticket.html

http://www.radardetector.net/forums/...ck-errors.html

http://www.radardetector.net/forums/...yet-again.html

That is why I have truelock turned off for now until we find a solution to this problem.