RedLine and V1 interference.

CJR238

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This was an excellent post by billybob that sparked some great information on how a V1 can interfere with a RedLine (M3). Though there is no obvious interference when you run them together, it's very obvious when run separately.

This goes for all RD's (not just RedLine V1 which seem to do better than most together). Running 2 RD's together may not cause falsing, but it may cause delayed alerting.

Please only discuss interference issues, and say on topic appropriate for general assess.


So, I have been running redline and v1 (ka guard off) together lately. V1 is on the left side of my windshield and redline is on the right side. About 3 feet apart. I have a tahoe and the windshield is fairly straight so they don't point to the outside like they would in a car.
Here is what I have noticed.
1. 35.5, redline 80% of the time alerts first but by a split second.
2. 34.7, v1 alerts first by a split second. Haven't had any extreme off axis encounters where redline would probably win.
3. Don't have any 33.8 where I live.

Like the other members that run the same combo, I assumed that v1 is not interfering with the redline much, specially because the way redline alerts to ka, its hard to tell between a late alert due to interference and a regular alert that sounds urgent. Then I noticed nine_c1 running his s7 RX65 with the v1 so I pulled out my old rx65 M4 and ran it with the v1. Interestingly, my rx65 beats my v1 in every band by a second or two and sometimes more on 35.5 specially off axis.

Then I tried running rx-65 and redline together and there is no comparison. Redline always alerts a couple of seconds before rx 65 no matter which band and k band detection on redline is just awesome.

This made me come to the conclusion that there is indeed interference between between v1 and redline and the detection of a redilne suffers while running together with the v1. Ofcourse it is possible that my rx-65 is interfering with my v1 but with ka guard off, I still get 1 dot ka alerts when running with rx65 so there was no obvious interference. The v1 does false on k band while running with rx65 if I put them close together.

I would very much like to know the opinions of others that are running a similar combo with a leaky detector and an M3. I have seen the tests by CJ and company on quick trigger on the escort forum and am aware of the interference conclusions presented by them. A v1 redline combo works nicely but I miss those wow alerts that I used to get running the redline by itself. But I have way too many state troopers doing 1-2 second I/Os where I live and I don't want to miss any of that so the dilemma.

Sti-R + is not an option since I am not willing to spend that much on one detector. I don't mind paying that much for multiple detectors since I enjoy the hobby but can't justify a 1300 dollar purchase no matter how I do the math.

Thanks for reading.
Bill.
 

CJR238

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Forward facing Ka 34.7 (Ka guard off, RedLine, V1, 9500CI):

http://www.youtube.com/watch?v=BgWTVwycz44

Same FF encounter but no V1 (Ka guard on, RedLine, Whistler, 9500CI):

http://www.youtube.com/watch?v=5O7QXMjRuS0

With V1 off RedLine alerted first. With V1 on RedLine alerted last. Not a big difference
I was giong to mount my v1 in the back of my vehicle like you although I don't have a car. Then I thought that I would get less interference mounting it beside the redline (off axis) as compared to behind the redline (direct line of sight). I know you do it that way mainly to eliminate interference with the ci. Absolutely, I defiantly get more interference to my RedLine with my V1 on the back deck, but as you said I did it mainly to stop interference with the CI.

I am also fully aware of your stance in regards to q/t and I mostly agree with you on the subject but I have been traveling to Texas lately and don't want to test my luck against q/t by just running the redline. The off axis I/O detection of the redline that you talk about has been diminished ever since I have started running the combo. Maybe ka guard off is making the v1 more responsive and I am not seeing that much difference between the two giving me the impression of diminished performance;) Plus I have a hotter v1 now, my first one was a dud and practically blind against 35.5 and with ka guard off, its a beast now on all bands.
I agree, I would not run the RedLine alone in TX ether.

Thanks for putting those videos for us noob folks in your post and not putting them in advanced section:D Not a problem for interference discussions that don't assist LEO's defeating us. I'm sure you know what those discussions could be, and why they are in the Advanced sections. :ssh:

Edit: Forgot to add, that is around 4-5 second difference in alert time if you take CI as base. Can't really see your speed but it seems to be above 40 mph. At 50mph, its around 73 feet per second so about 350 feet difference roughly. Not too bad but bad enough to miss an I/O blip.
Here is 2 excellent videos of what a V1 can do to a RedLine causing a huge delay in alerting. Though it may not always happen like this, it certainly can. (special thanks to Riptide and mrkookm for these 2 videos):

http://www.youtube.com/watch?v=Me85phNIwJU&feature=player_embedded

http://www.youtube.com/watch?v=oeg7tbk-tY4&feature=player_embedded

So in my vids you can only barley tell there is interference and could be written off as just the encounter. But the 2 videos above that Riptide and mrkookm did show it very obviously. So weather you see/experience interference or not its still there, the question is how much and if you are willing to accept it like you and I do for the potential for the greater good.
 

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right, it is all very easy to understand - basically, you get more interference than at other times, and the v1 does affect the redline..

so my question is - if one is mounted on the rear of the car (V1), do you get less/more/same interference....

also, if you put the redline horizontal on the front, and the v1 vertical on the back - would that make a difference:confused: has anyone tested this??
 

CJR238

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right, it is all very easy to understand - basically, you get more interference than at other times, and the v1 does affect the redline..

so my question is - if one is mounted on the rear of the car (V1), do you get less/more/same interference....

also, if you put the redline horizontal on the front, and the v1 vertical on the back - would that make a difference:confused: has anyone tested this??
Excellent questions! :)

I run my V1 on the back deck of my car specifically so it will decrease the chances of it interfering with my remote 9500ci, though it still does at times (when close behind vehicles sometimes) its quite a bit less then the interference the V1 causes to my RedLine on the windshield.
Because most of what causes interferance is the emissions from the antenna, some have been hapy running the RedLine and V1 side by side (a few feet apart).

Basically its a bad idea to run any 2 RD's together (except for 2 M3 Belscorts, though there can be issues here too). It's up to the individual and what they are willing to accept for potential positive advantages.


Your idea of running redline horizontal on the front, and the v1 vertical on the back may be a really good idea for other country's where some of the radars are vertically polarized to detect at a better distance without loosing regular radar range with the horizontal redline. However if i was to do this if i lived in Europe i would mount the RedLine vertically. But ether way you will still get interference.
 

Nazar

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Excellent questions! :)
Your idea of running redline horizontal on the front, and the v1 vertical on the back may be a really good idea for other country's where some of the radars are vertically polarized to detect at a better distance without loosing regular radar range with the horizontal redline. However if i was to do this if i lived in Europe i would mount the RedLine vertically. But ether way you will still get interference.
it was worth asking, i figured the polarization being vertical and the other being horizontal, you might get a lot less interference.......... oh well

thanks for the answer
 

CJR238

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it was worth asking, i figured the polarization being vertical and the other being horizontal, you might get a lot less interference.......... oh well

thanks for the answer
Its an excellent question still, but there is a big loss of normal radar sensitivity when mounted vertical. So it would definitely be worth testing for those that have vertically polarized speed enforcement.

Thanks for the great question.
 

Nazar

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Its an excellent question still, but there is a big loss of normal radar sensitivity when mounted vertical. So it would definitely be worth testing for those that have vertically polarized speed enforcement.

Thanks for the great question.
are you currently organizing someone to do a test?? because i would be greatly interested........ as where i am, the verticals seem to have better reception than the horizontal......... or should i ask in a separate thread "test asked - front horizontal,back vertical or other way around"
 

CJR238

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are you currently organizing someone to do a test?? because i would be greatly interested........ as where i am, the verticals seem to have better reception than the horizontal......... or should i ask in a separate thread "test asked - front horizontal,back vertical or other way around"
Post it up separately (that wouldn’t be post padding;)), maybe others have an answer. Especially since your questions need to be answered by someone familiar with Australia as opposed to the US.

Yes, some of the radar in your area is vertically polarized, so a vertical mount will help. But if someone in the US tried this they would get owned since in the US vertically polarized radar is not used.
 

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Its an excellent question still, but there is a big loss of normal radar sensitivity when mounted vertical. So it would definitely be worth testing for those that have vertically polarized speed enforcement.

Thanks for the great question.
Nazar and CJR, I addressed this (sorta) very issue on the my round trip to Fla and back last month. Ran BOTH units, V-1 and Redline. V-1 on the back window mounted horizontally since we don't get a whole lot of "vertical stuff" here and the Redline in front. Note that this is a black 2011 Toyota Sienna SE model so there's a LOT of separation between the V-1 and the redline. (at least 12 feet by my measurements) See my post on another forum:

Just got back from 3500 mile trip using both Redline and V-1

Well, well , well.....just got back from a 3500 mile round trip from Chicago to Florida to see the final shuttle fly. I ran three units, the SC55 mounted on my Belscort Redline and in the rear I ran a V-1. Not to be Captain Obvious here, BUT running these two in unison does not seem to affect their performance as they are separated by about 12 feet of vehicle space as well (Toyota Sienna/ black).

The Escort SC55 acquitted itself quite well in all states where there are redlight cameras (Georgia still has a few left for some reason). There's a ton of them in IL and also Florida. Not once did I miss a camera (they are posted as well) and saw a few where I never imagined the traffic volume would suffice to support the revenue, BUT they were there nonetheless. When did the Daytona area suddenly become a mecca of enforcement cameras??

ON to the Redline. I have the Redline mounted below the SC 55 and it slaves off the alerts on the SC55. The Redline, again this is my unbiased unscientific opinion, is absolutely awesome on Ka. (Note that I also own three V-1s ). Even when I was running the V-1 on the back window which is just like a big back windshield, the Redline alerted at least 3-5 seconds BEFORE the V-1 on Ka. Granted the V-1 was mounted backwards and was at a disadvantage in that regard, BUT the performance of the Redline on Ka was excellent. On Lidar, the Redline was absolutely miserable, if not totally ineffective at all. On SB I-75 in Georgia and also the related by- passes, I took at least 10 lidar hits from the front or front top (over-passes) and NOT once did the Redline sound off. Believe it or not, the V-1 mounted in the back alerted to 5 of the 10 hits as it was mounted on the rear window and it wasnt anywhere in the line of fire to even sound off?? I think Belscort really needs to go back to school on the Lidar exposure since my Redline was worthless. Were it not for a few Florida-bound rabbits in the front of me, all of whom were tagged and stopped, I would have been toast. GSP and the local county sheriffs just love there lidar down there on 75. They are also getting fond of using the over-passes to get you. Fortunately, at the FL line just south of Valdosta, the Redline did acquit itself quite well as a single motorcycle cop with handheld Ka (almost sounded like QT) was knocking em off and then they were being pulled over by about 10 FSP near the welcome center. Welcome to Florida now here's your love letter from the state of FL!!! Again, in fairness to the V-1, it didnt catch the Ka as quick as the Redline, BUT in its position, I am not sure I could expect it to. Still, the performance of the Redline on the Ka is very good as other vehicles running units in front of me would brake well "after" I had already gotten my Ka alert.

I love my V-1 which I have been using since Mike first came out with them. I do however like the functionality of the SC55 combined with the Redline. It gives Redlight camera performance of the 9500iX on an M3 platform of the Redline. BUT, to reiterate, the Lidar sensitivity of the Redline flat out scares me. Its basically ineffective compared to the V-1 (not that it matters anyway in the absence of a L.I.)
 

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Hopefully you guys don't mind me bumping this up. I've been running the redline on top to the right of the RVM and the V1 mounted 6" above the dash recently. I just figured out how to play around with the settings on the V1 and changed POP ON and KA GUARD OFF.

Before when I had them mounted in this fashion, both preformed fine, however I can't comment if there was any interference. I wasn't getting any abnormal false alerts from either detector, however I'm not sure if the range was suffering.

After I turned KA guard off I seem to be getting many random spurts of KA, obviously falses. The thing is, a lot of this is when there are no cars around me. The first few times I figured it was a cheapo detector (and I have a bushnell for that), but recently I've noticed that it happens all the time, often when I'm the only one on the road.

My question is: Is it at all possible for the Redline to give the V1 false KA alerts? Once again, I'm still a RDF noob, so bare with me on the "search" function.
 

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My question is: Is it at all possible for the Redline to give the V1 false KA alerts? Once again, I'm still a RDF noob, so bare with me on the "search" function.
Its highly unlikely, in testing and observations by many there has been no interference. What you are probably getting is Ka falsing due to Ka guard being off, the V1 is unbearable with Ka guard off. POP on will also increase Ka falsing.

Most would recommend POP off and Ka guard on.
 

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Its highly unlikely, in testing and observations by many there has been no interference. What you are probably getting is Ka falsing due to Ka guard being off, the V1 is unbearable with Ka guard off. POP on will also increase Ka falsing.

Most would recommend POP off and Ka guard on.
Seeing this makes me wonder if I should try and run the Magnum with the 3.891. The Magnum and Redline do not play well together. My suspicion would be the Magnum would interfere more with the V1 than the Redline would.
 

CJR238

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Seeing this makes me wonder if I should try and run the Magnum with the 3.891. The Magnum and Redline do not play well together. My suspicion would be the Magnum would interfere more with the V1 than the Redline would.
Magnum shouldn't interfere with the V1 or the RedLine. The RedLine and Magnum should work fine with each other because both are M3's and don't give off the same amount of emissions as a non shielded RD. If there is interference they may be too close to each other or something is wrong with one of them.
 

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Its highly unlikely, in testing and observations by many there has been no interference. What you are probably getting is Ka falsing due to Ka guard being off, the V1 is unbearable with Ka guard off. POP on will also increase Ka falsing.

Most would recommend POP off and Ka guard on.
Thanks for the response CJR. I guess I should run the V1 in POP OFF and Ka Guard ON when paired with the Redline. The Redline seems tied if not ahead of the V1 on KA anyway. I might play around with some different mounting solutions with the V1 to see if I can minimize the falses. Maybe mount it on the rear deck, similar to yours.
 

CJR238

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Thanks for the response CJR. I guess I should run the V1 in POP OFF and Ka Guard ON when paired with the Redline. The Redline seems tied if not ahead of the V1 on KA anyway. I might play around with some different mounting solutions with the V1 to see if I can minimize the falses. Maybe mount it on the rear deck, similar to yours.
I keep trying to use my V1 with Ka guard off, but it totally drives me crazy. I just cant deal with the random Ka falses.

Use the muting features for K filtering, here is an article all about the K band filtering on my V1: https://www.rdforum.org/content/122-v1-review-options-settings-quiet-down.html

The V1 on my back deck helped my 9500ci's performance, but not so much for the RedLine.
 

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Would you say the Redline gives you the "omg.." long Ka alerts even when running a V1?
 

CJR238

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Would you say the Redline gives you the "omg.." long Ka alerts even when running a V1?
On occasion my RedLine really rocks while running my V1, but not as often as when i run my CI and RedLine with out the V1. Lately i have been driving with my V1 off, and i can see the difference in the RedLines performance.
 

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On occasion my RedLine really rocks while running my V1, but not as often as when i run my CI and RedLine with out the V1. Lately i have been driving with my V1 off, and i can see the difference in the RedLines performance.
Hmm. I want to see I/O testing of running each detector without the other one on, and again with both on. If they don't vary too much, I wouldn't mind the slight difference in C/O detection I've heard a few members notice.
 

CJR238

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Hmm. I want to see I/O testing of running each detector without the other one on, and again with both on. If they don't vary too much, I wouldn't mind the slight difference in C/O detection I've heard a few members notice.
Well it can greatly depend on placement. If the RedLine and V1 are both on the windshield reports have been good with normal I/O & C/O. The key is to prevent each antenna from seeing each other or being in the same line of sight. My V1 on the back deck effects the RedLines performance quite a bit at times, but never really a bad issue.

You will see in this vid that the CI isn't effected at all, but the RedLine was, and the V1 preformed the same as always does.
[video=youtube;DV4m0VUMk4E]http://www.youtube.com/watch?v=DV4m0VUMk4E[/video]
 

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Magnum shouldn't interfere with the V1 or the RedLine. The RedLine and Magnum should work fine with each other because both are M3's and don't give off the same amount of emissions as a non shielded RD. If there is interference they may be too close to each other or something is wrong with one of them.
There's definitely interference between the Magnum and Redline. It wasn't that way with the STi Driver and Redline, though.
 

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