Laser Jammer
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I almost bought the M27, but I ended up splurging on the Laser Interceptor instead, it just works better. I just had it installed last week and I've been meaning to post pics.. maybe tomorrow. The M27 uses infrared LEDs to blind the guns, and produces jam codes, and eventually they will punch through.. the laser interceptor uses the same laser diodes on the Lidar guns, and can jam all the way to the gun on almost every model, and there's only one gun it will produce a jam code on. There's a discount code for them if you check the radarbusters forum.
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Joined: Jun 2009
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'09 C350 MM
I almost bought the M27, but I ended up splurging on the Laser Interceptor instead, it just works better. I just had it installed last week and I've been meaning to post pics.. maybe tomorrow. The M27 uses infrared LEDs to blind the guns, and produces jam codes, and eventually they will punch through.. the laser interceptor uses the same laser diodes on the Lidar guns, and can jam all the way to the gun on almost every model, and there's only one gun it will produce a jam code on. There's a discount code for them if you check the radarbusters forum.
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Joined: Nov 2008
Posts: 684
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From: Dallas TX area
M5, C63, 335Ci
I also have the Laser Interceptor unit. It did the best in the Guys of Lidar testing and has served me well. I'll take a pic or two of the jamming/receiving head installation spot behind my grill, but everything else is behind trim panels, etc. I ran the wires from the heads through the fusebox to allow easy access through the firewall. The control unit is above the drivers side underdash trim panel and the power switch is in the same trim panel. There is a group buy available on another forum that gets you a pretty good discount. PM me for details, but it saves your arund 20% off normal prices.
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MBWorld Fanatic!
Joined: Sep 2009
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From: Dix Hills, New York
2012 C250 Coupe
I have been debating the laser interceptor. Which one would you guys recommend, dual, quad, hi-power or not?
It can get pretty expensive, and I would love to see installation pictures, I am not crazy about the fact that the sensors have to be visible. It is pretty cool on the other hand that you can use them as parking sensors for the front and rear (not sure how that works if someone wants to review that).
But doesn't it warn when it is actively jamming? If so, whats the need for the valentine one, earlier detection?
It can get pretty expensive, and I would love to see installation pictures, I am not crazy about the fact that the sensors have to be visible. It is pretty cool on the other hand that you can use them as parking sensors for the front and rear (not sure how that works if someone wants to review that).
But doesn't it warn when it is actively jamming? If so, whats the need for the valentine one, earlier detection?
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Joined: Jun 2008
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2009 C350W on EDP
Better to Bank on Passive Detection and Warning...
I have been debating the laser interceptor. Which one would you guys recommend, dual, quad, hi-power or not?
It can get pretty expensive, and I would love to see installation pictures, I am not crazy about the fact that the sensors have to be visible. It is pretty cool on the other hand that you can use them as parking sensors for the front and rear (not sure how that works if someone wants to review that).
But doesn't it warn when it is actively jamming? If so, whats the need for the valentine one, earlier detection?
It can get pretty expensive, and I would love to see installation pictures, I am not crazy about the fact that the sensors have to be visible. It is pretty cool on the other hand that you can use them as parking sensors for the front and rear (not sure how that works if someone wants to review that).
But doesn't it warn when it is actively jamming? If so, whats the need for the valentine one, earlier detection?
Notwithstanding the marketing, IMO the effectiveness of active jammers is very dubious. The power/SNR physics simply do not work out in real-world encounters. I think the best defense is sensitive, "smart" passive receivers that looks in all directions simultaneously... like the Valentine.
Super Member
Joined: Nov 2008
Posts: 684
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From: Dallas TX area
M5, C63, 335Ci
Good question. The Valentine, and similar warning devices, are passive receivers. These are typically extremely sensitive devices. The impinging energy from the police laser transmitter arrives at your vehicle as an extremely narrow focused beam created by the precision optics of the laser gun, and it also aimed by the police directly at a suitably reflective surface on your car. This results in a very high Received Signal Strength Intensity (RSSi), but only for an extremely short period of time when a rapid sequence of pulses are transmitted to measure your range and range change/time = speed. These pulses need to arrive at you vehicle strong enough that the very small fraction of reflected laser energy, which is now scattering and non-focused by optics on the return path, travels back to be captured by the police laser receiver with adequate signal-to-noise ratio (SNR) that the receiver can decently detect the laser, and yet not issue false alarms based on weak/distorted signals. Because the police laser energy must go roundtrip, and the Valentine only has to detect the signal after one hop, there is a major signal strength advantage for the warning receiver that translates into a major warning range advantage over the police laser speed measuring range .... that is, unless they zap you with little waning.
Notwithstanding the marketing, IMO the effectiveness of active jammers is very dubious. The power/SNR physics simply do not work out in real-world encounters. I think the best defense is sensitive, "smart" passive receivers that looks in all directions simultaneously... like the Valentine.
Notwithstanding the marketing, IMO the effectiveness of active jammers is very dubious. The power/SNR physics simply do not work out in real-world encounters. I think the best defense is sensitive, "smart" passive receivers that looks in all directions simultaneously... like the Valentine.
Super Member
Joined: Nov 2008
Posts: 684
Likes: 2
From: Dallas TX area
M5, C63, 335Ci
I have been debating the laser interceptor. Which one would you guys recommend, dual, quad, hi-power or not?
It can get pretty expensive, and I would love to see installation pictures, I am not crazy about the fact that the sensors have to be visible. It is pretty cool on the other hand that you can use them as parking sensors for the front and rear (not sure how that works if someone wants to review that).
But doesn't it warn when it is actively jamming? If so, whats the need for the valentine one, earlier detection?
It can get pretty expensive, and I would love to see installation pictures, I am not crazy about the fact that the sensors have to be visible. It is pretty cool on the other hand that you can use them as parking sensors for the front and rear (not sure how that works if someone wants to review that).
But doesn't it warn when it is actively jamming? If so, whats the need for the valentine one, earlier detection?
See the attached pics.
As far as the warning goes, yes the LI does warn when it detects and then jams the laser. I actually have my V1 built into the center rear headrest and the display in my rear view mirror so the V1 can't pick up laser due to lack of sight to the signal. I used to have it on the windshield and actually programmed it to turn off laser after installing the LI to avoid the alse alarms from laser guided cruise control systems like on the Infiniti cars and trucks. The LI is much more precise in it's detection and doesn't false on those.
Last edited by qship5; Aug 26, 2010 at 11:00 AM.
Thread Starter
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Joined: Jun 2009
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'09 C350 MM
The unit you buy depends on what type of vehicle you are protecting. High power units are needed for SUVs, trucks, etc. Standard power units are plenty adequate for most cars. Most police radar targeting is done on the front of the vehicle with a small amount done from behind. It's your call if you want front only (2 head) or front and rear (4 head) protection. The sensors do not need to be in plain sight to work. They need a clear view ahead and behind the vehicle. Mine are mounted behind the front grille on some fabricated aluminum brackets and they work great and unless you are looking through the grille from close up, you would never know they are there. I might lose a little detection/jamming capability at extreme angles from the side, but this setup has worked great for me so far.
See the attached pics.
As far as the warning goes, yes the LI does warn when it detects and then jams the laser. I actually have my V1 built into the center rear headrest and the display in my rear view mirror so the V1 can't pick up laser due to lack of sight to the signal. I used to have it on the windshield and actually programmed it to turn off laser after installing the LI to avoid the alse alarms from laser guided cruise control systems like on the Infiniti cars and trucks. The LI is much more precise in it's detection and doesn't false on those.
See the attached pics.
As far as the warning goes, yes the LI does warn when it detects and then jams the laser. I actually have my V1 built into the center rear headrest and the display in my rear view mirror so the V1 can't pick up laser due to lack of sight to the signal. I used to have it on the windshield and actually programmed it to turn off laser after installing the LI to avoid the alse alarms from laser guided cruise control systems like on the Infiniti cars and trucks. The LI is much more precise in it's detection and doesn't false on those.
Super Member
Joined: Nov 2008
Posts: 684
Likes: 2
From: Dallas TX area
M5, C63, 335Ci
MBWorld Fanatic!
Joined: Sep 2009
Posts: 2,108
Likes: 7
From: Dix Hills, New York
2012 C250 Coupe
Thanks for all the info! I think I'm just going to stick with the Valentine for now, and see how it goes. Maybe if I come into a bit of cash I will purchase the laser radar.... Thanks again!
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As far as the Valentine1 goes, if it detects laser, the jammers will activate. All it does is add a third, very sensitive, receptor to your Laser Interceptor. Useful, and since the LI doesn't have anything to do with radar, you kind of need to have one.
Super Member
Joined: Nov 2008
Posts: 684
Likes: 2
From: Dallas TX area
M5, C63, 335Ci
You're blocking huge chunks from your transmission path with the grille. You should really consider moving it out from behind the grille or at the very least, cut out the grille from in front of them and move them forward.. but it seems like you're wasting a ton of money if your install blocks them from working when you need them.
As far as the Valentine1 goes, if it detects laser, the jammers will activate. All it does is add a third, very sensitive, receptor to your Laser Interceptor. Useful, and since the LI doesn't have anything to do with radar, you kind of need to have one.
As far as the Valentine1 goes, if it detects laser, the jammers will activate. All it does is add a third, very sensitive, receptor to your Laser Interceptor. Useful, and since the LI doesn't have anything to do with radar, you kind of need to have one.
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Joined: Aug 2009
Posts: 964
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It's not a question of how thick it is but how opaque it is... you're blocking a beam of light.. and I think the issue would be from 1000 feet away, not 10. Remember, they try to tag you with the gun before you can see them.
I hope it works for you, I really do.
I hope it works for you, I really do.
Super Member
Joined: Nov 2008
Posts: 684
Likes: 2
From: Dallas TX area
M5, C63, 335Ci
I understand your point and both the receive and transmit diodes are positioned so that the open part of the mesh is directly in front of them.
I am curious about your earlier post about the V1 activating the LI jamming sequence. How are you doing that? My V1 is not connected to my LI. Is your wired in somehow?
I am curious about your earlier post about the V1 activating the LI jamming sequence. How are you doing that? My V1 is not connected to my LI. Is your wired in somehow?
Super Member
Joined: Aug 2009
Posts: 964
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You need this special accessory cable to connect your V1 to LI.
Super Member
Joined: Nov 2008
Posts: 684
Likes: 2
From: Dallas TX area
M5, C63, 335Ci
You need this special accessory cable to connect your V1 to LI.
