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View Full Version : STI-R Plus filtering out K band incorrectly?



Fezzik
04-05-2011, 12:50 PM
Hi. Well I've got my sti driver and my sti-r plus next to each other in the window to compare how they are doing. The area i live at leave Ka on and K as well. Problem is that K band is not going off on some cops. Also there were 3 cops that went by and the sti-r plus said stored while the driver was blaring K band. Anyway to fix this?

Also the Driver will find Ka band sometimes on the interstate but not the Plus. Could this be the false Kas from Cobra owners? Does the Plus filter this as well?

kpatz
04-05-2011, 01:18 PM
Hi. Well I've got my sti driver and my sti-r plus next to each other in the window to compare how they are doing. The area i live at leave Ka on and K as well. Problem is that K band is not going off on some cops. Also there were 3 cops that went by and the sti-r plus said stored while the driver was blaring K band. Anyway to fix this?Turn off auto-lock.
Also the Driver will find Ka band sometimes on the interstate but not the Plus. Could this be the false Kas from Cobra owners? Does the Plus filter this as well?If RDR is on or you use the Ka band segmentation feature, it may filter out Ka falses (or actual LEOs if you turn off the wrong segments) more than the STi Driver.

CJR238
04-05-2011, 01:24 PM
Hi. Well I've got my sti driver and my sti-r plus next to each other in the window to compare how they are doing. The area i live at leave Ka on and K as well. Problem is that K band is not going off on some cops. Also there were 3 cops that went by and the sti-r plus said stored while the driver was blaring K band. Anyway to fix this?Turn off auto-lock.
Also the Driver will find Ka band sometimes on the interstate but not the Plus. Could this be the false Kas from Cobra owners? Does the Plus filter this as well?If RDR is on or you use the Ka band segmentation feature, it may filter out Ka falses (or actual LEOs if you turn off the wrong segments) more than the STi Driver.

X2, it should also unlearn the signals it stored if the signal is no longer at that location.

Fezzik
04-05-2011, 01:27 PM
Thanks. Will turning autolock off unlearn the spots its done this too?

is there specific freq that the cobra's leak out the Ka?
Thanks!

kpatz
04-05-2011, 01:38 PM
Actually, if you drive through that area again and there's no radar there, it should "unlearn" that location automatically. At least that's how the 9500ci works. I don't have an STi-R+ manual handy.

Cobras usually leak around the 33.6 GHz range. Turning off Ka segment 1 should minimize most Cobra falses. Many people run with just segments 2, 5, 8 on, which covers the 3 main frequencies that Ka radar guns in North America use.

Also, if it happens again (a signal gets locked out accidentally), just hold the MUTE button down for a few seconds to unlock the signal.

Are you running either of your units in "Tech" mode (frequency display)? Then you'll know what Ka frequencies you're seeing, both for LEOs and falses.

CJR238
04-05-2011, 01:46 PM
Note: it takes about ~6 passes with no signal present to unlock a signal automatically and you need to be over ~35mph.

Fezzik
04-05-2011, 01:50 PM
Actually, if you drive through that area again and there's no radar there, it should "unlearn" that location automatically. At least that's how the 9500ci works. I don't have an STi-R+ manual handy.

Cobras usually leak around the 33.6 GHz range. Turning off Ka segment 1 should minimize most Cobra falses. Many people run with just segments 2, 5, 8 on, which covers the 3 main frequencies that Ka radar guns in North America use.

Also, if it happens again (a signal gets locked out accidentally), just hold the MUTE button down for a few seconds to unlock the signal.

Are you running either of your units in "Tech" mode (frequency display)? Then you'll know what Ka frequencies you're seeing, both for LEOs and falses.

This is great info thanks!

Great info also from everyone else. I'm just a little paranoid b/c the cops have someone pulled over every day here and its dishearting to see that the plus did give me a K.

barryswanson
04-05-2011, 03:36 PM
You said the two detectors where right next to each other, how close exactly? Keep in mind that even though these detectors are stealth at very close range they do emitt RF and could be interfering with each other.

Fezzik
04-05-2011, 07:20 PM
I'm positive it's not them throwing each other off. The k bands went off as each cop came over the hill and turned onto the street i was on.

CJR238
04-06-2011, 08:35 AM
I'm positive it's not them throwing each other off. The k bands went off as each cop came over the hill and turned onto the street i was on.

Thats not necessarily the case, with close mounting (within a foot or so) there can be regular EMI emissions that can cause one to not alert appropriately while the other is fine. Most likely antenna to get interference would be the Plus antenna.

insidercw3
04-06-2011, 09:43 AM
I'm positive it's not them throwing each other off. The k bands went off as each cop came over the hill and turned onto the street i was on.

Thats not necessarily the case, with close mounting (within a foot or so) there can be regular EMI emissions that can cause one to not alert appropriately while the other is fine. Most likely antenna to get interference would be the Plus antenna.



???Why would the STi-R+ be the "most likely antenna to get interference" ? Do you have some insight to base this statement upon? The OP didn't indicate that he was running with RDR off and even if he were the M3s are not subject to RDR algorithms due to the frequencies of the M3 LOs.

CJR238
04-06-2011, 02:11 PM
I'm positive it's not them throwing each other off. The k bands went off as each cop came over the hill and turned onto the street i was on.

Thats not necessarily the case, with close mounting (within a foot or so) there can be regular EMI emissions that can cause one to not alert appropriately while the other is fine. Most likely antenna to get interference would be the Plus antenna.



???Why would the STi-R+ be the "most likely antenna to get interference" ? Do you have some insight to base this statement upon? The OP didn't indicate that he was running with RDR off and even if he were the M3s are not subject to RDR algorithms due to the frequencies of the M3 LOs.

One is a window mount unit sitting next to a remote unit, one is in cased in plastic one is in cased in a mettle body. I agree RDR has nothing to do with it, i am talking regular EMI interference with any electronic device.

Technically its a remote unit and should not be installed in the car, and really shouldn't be placed right next to any RD, even an M3 IMO.

ZPrime
04-06-2011, 03:43 PM
I'm positive it's not them throwing each other off. The k bands went off as each cop came over the hill and turned onto the street i was on.

Thats not necessarily the case, with close mounting (within a foot or so) there can be regular EMI emissions that can cause one to not alert appropriately while the other is fine. Most likely antenna to get interference would be the Plus antenna.



???Why would the STi-R+ be the "most likely antenna to get interference" ? Do you have some insight to base this statement upon? The OP didn't indicate that he was running with RDR off and even if he were the M3s are not subject to RDR algorithms due to the frequencies of the M3 LOs.

One is a window mount unit sitting next to a remote unit, one is in cased in plastic one is in cased in a mettle body. I agree RDR has nothing to do with it, i am talking regular EMI interference with any electronic device.

Technically its a remote unit and should not be installed in the car, and really shouldn't be placed right next to any RD, even an M3 IMO.

Escort have said several times that the antenna used in the Redline/9500ci/STIR Plus should be immune to cross pollution with the same units. IOW, you could run 3 redlines on your dash and it shouldn't be a problem.

I don't know what antenna the Driver uses though?

CJR238
04-06-2011, 04:12 PM
I'm positive it's not them throwing each other off. The k bands went off as each cop came over the hill and turned onto the street i was on.

Thats not necessarily the case, with close mounting (within a foot or so) there can be regular EMI emissions that can cause one to not alert appropriately while the other is fine. Most likely antenna to get interference would be the Plus antenna.



???Why would the STi-R+ be the "most likely antenna to get interference" ? Do you have some insight to base this statement upon? The OP didn't indicate that he was running with RDR off and even if he were the M3s are not subject to RDR algorithms due to the frequencies of the M3 LOs.

One is a window mount unit sitting next to a remote unit, one is in cased in plastic one is in cased in a mettle body. I agree RDR has nothing to do with it, i am talking regular EMI interference with any electronic device.

Technically its a remote unit and should not be installed in the car, and really shouldn't be placed right next to any RD, even an M3 IMO.

Escort have said several times that the antenna used in the Redline/9500ci/STIR Plus should be immune to cross pollution with the same units. IOW, you could run 3 redlines on your dash and it shouldn't be a problem.

I don't know what antenna the Driver uses though?

Yes, it shouldn't be a problem, but being right next to each other is not a good idea IMO (sounds like a few inches).
I'm not talking about normal interference from one antenna to another with regular antennas like we talk about, I am talking regular electrical interference from any electronic device. Like EMI or RFI. Electromagnetic interference (EMI) is a concern with multiple electrical systems within close proximity. This is the disruption of one electronic device caused by a nearby electronic device.

The Driver uses an M3, so it wont interfere like a regular non M3 antenna if at all, if spaced properly.