Trackers??
Trackers??
appologies in advance if this is another repost,, seriously looking into getting a tracker fitted to my sapph, anyone have one fitted to any of thier cars? what sort of price am i looking at and are they any good? tbh im after one that i can see on my own pc/laptop (if this exists?) rather than relieing on the old bill and there equiptment!
appologies in advance if this is another repost,, seriously looking into getting a tracker fitted to my sapph, anyone have one fitted to any of thier cars? what sort of price am i looking at and are they any good? tbh im after one that i can see on my own pc/laptop (if this exists?) rather than relieing on the old bill and there equiptment!
We sell it to fleet customers so most put it on a big screen in the office to see where their vehicles are at any given time
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http://www.seventelematics.co.uk/
this sort of thing is monitorable by yourself but i'm not sure if you are thinking about the stuff you see on the telly that james bond style peeps use
this sort of thing is monitorable by yourself but i'm not sure if you are thinking about the stuff you see on the telly that james bond style peeps use
Most but not all GPS trackers can be blocked! However the police are now actively looking for the Jammers and they are easy to detect. Due to the fact that a lot of things now use the GPS timing signal the police tend to through the book at you for doing this, this can include counter terror laws..... the http://www.tracker.co.uk people do one called the Horizon this apparently uses multiple whays of sending out an "i've been stolen" shout and multiple ways of locating it!
what ever you do at least make their eyes water if they try and take your pride and glory!
what ever you do at least make their eyes water if they try and take your pride and glory!
A qoute from a post i wrote on the last thread that ill-informed information came up on "cheap and easy" GPS jamming of trackers.
you dont understand gps very well...
the civilian available frequencys are currently based on 2 seperate frequency groups with a third in development. the early civilian GPS used whats known as the L1 frequency band.
In simple terms the early civvy GPS network uses a message that contains 3 core bits of info, satellite time/date info, emphemeris data (wherethat satellite is in orbit NOW), and almanac data (rough positions of all satellites).On top of that is a coarse/aquisation code which in essence helps you calculate the "offset". Then the computer once its locked onto 3 satellites (2d fix) and 4 or more satellites (3d fix) it uses the data to calculate a position.
it is more complicated than that in reality as its all the signals are modulated onto a carrier wave so have to be demodulated and broken down, errors calculated etc etc etc before you even get to the point of calculating a position.... but google if you want to know more
now the good old US has upgraded the civvy GPS to use the L2 frequency which does not use a CA code but uses two data streams to do ranging and hence offsets. so works slightly different as well as being on a different frequency.
most new GPS recievers use a combination of both frequencys and methods to get better positional accuracy and faster fixs.
most newer GPS recievers have anti-jam capabilities and sufficient redundancy to get past most basic GPS jammers.
Almost all jammers are focused on the L1 frequency. Especially anything you and I (and more importantly criminal scum) can afford. Anything sub Ł200 (including the ebay jammers) arfe simple continous wave jammers operating on the L1 frequency.
most modern GPS units can filter out continous wave jamming on the L1 frequency unless the signal is very strong or directly in line of sight of satellites.
the better jammers that cost several hundreds use noise generation on the L1 frequency and hence are much more effective.
Even so their range is very limited due to the very low power of these types of devices. It doesnt help that most are based on cigarette power supplies so low down in car, and its 50/50 whether the aerial is high up or low down. It will be minimally effective on a high up GPS aerial. But they can be quite effective on low down GPS units such as cheap/older units or the magnetic undercar trackers (which is what they were designed for countering really).
all this wont effect L2 frequencies so the GPS will still get a fix in quick order due to stored C/A data and alamanac data. Such jammers would only slow down a fix on L2 frequency for a cold start on a GPS unit thats got no data whatsoever in it.
of course none of this effects the precise positioning systems or the p-code military systems.
GPS tracking and electronic warfare against both jammers and GPS is a very interesting subject... some of the latest kit uses either electronically or physically steerable phased array aerials that can remove all ground interference for advanced anti-jamming meaning youd need an aircraft with a jammer to stand a chance at all of jamming such modern devices. However thats a bit beyond the scope of car usage and generally reserved for top level civvy and mostly military usage.
oh and most people dont realise that one of the other uses of the GPS satellites is to detect nuclear missile launches and detonations as part of the US defence network. Thats a small part of how in the nuclear war films NORAD can see where all the missiles come from and detonate cool or what???
Blocking the GSM network is much much easier.
however similar limitations apply to the units used. GSM jammers sited inside a car will have little/no effect on an underbody tracker and limited impact on a higher up GSM aerial or a GSM aerial sited outside the main cabin.
So jamming GSM and GPS isnt as simple as a Ł20 chinese piece of crap off ebay as people think. Its hit and miss both for us the car owner and them the thief. Thats why its common for them to dump the car or try and find the tracker as they know they cant defeat them all.
the best defence as phil says is a layered defence of a tracker that uses GPS, GSM AND VHF as even if the maniacs have dual GSM and GPS jammers they still will never stop the VHF.
Further to that, i was talking to a family member who is a communications engineer working in defence with aspects of the GSM sector (and i mean a degree qualified engineering and computing geek, not some mong with a screwdriver misusing the "engineer" title) and even the GSM jammers are not that effective hence why many trackers put the GSM aerial next to windscreen or a window edge.
People need to open thier eyes a bit and do some decent research before making thier mind up about a security product rather than using hearsay or ebay claims.
A layered defence principle is ALWAYS better than a one hit security device.
the civilian available frequencys are currently based on 2 seperate frequency groups with a third in development. the early civilian GPS used whats known as the L1 frequency band.
In simple terms the early civvy GPS network uses a message that contains 3 core bits of info, satellite time/date info, emphemeris data (wherethat satellite is in orbit NOW), and almanac data (rough positions of all satellites).On top of that is a coarse/aquisation code which in essence helps you calculate the "offset". Then the computer once its locked onto 3 satellites (2d fix) and 4 or more satellites (3d fix) it uses the data to calculate a position.
it is more complicated than that in reality as its all the signals are modulated onto a carrier wave so have to be demodulated and broken down, errors calculated etc etc etc before you even get to the point of calculating a position.... but google if you want to know more
now the good old US has upgraded the civvy GPS to use the L2 frequency which does not use a CA code but uses two data streams to do ranging and hence offsets. so works slightly different as well as being on a different frequency.
most new GPS recievers use a combination of both frequencys and methods to get better positional accuracy and faster fixs.
most newer GPS recievers have anti-jam capabilities and sufficient redundancy to get past most basic GPS jammers.
Almost all jammers are focused on the L1 frequency. Especially anything you and I (and more importantly criminal scum) can afford. Anything sub Ł200 (including the ebay jammers) arfe simple continous wave jammers operating on the L1 frequency.
most modern GPS units can filter out continous wave jamming on the L1 frequency unless the signal is very strong or directly in line of sight of satellites.
the better jammers that cost several hundreds use noise generation on the L1 frequency and hence are much more effective.
Even so their range is very limited due to the very low power of these types of devices. It doesnt help that most are based on cigarette power supplies so low down in car, and its 50/50 whether the aerial is high up or low down. It will be minimally effective on a high up GPS aerial. But they can be quite effective on low down GPS units such as cheap/older units or the magnetic undercar trackers (which is what they were designed for countering really).
all this wont effect L2 frequencies so the GPS will still get a fix in quick order due to stored C/A data and alamanac data. Such jammers would only slow down a fix on L2 frequency for a cold start on a GPS unit thats got no data whatsoever in it.
of course none of this effects the precise positioning systems or the p-code military systems.
GPS tracking and electronic warfare against both jammers and GPS is a very interesting subject... some of the latest kit uses either electronically or physically steerable phased array aerials that can remove all ground interference for advanced anti-jamming meaning youd need an aircraft with a jammer to stand a chance at all of jamming such modern devices. However thats a bit beyond the scope of car usage and generally reserved for top level civvy and mostly military usage.
oh and most people dont realise that one of the other uses of the GPS satellites is to detect nuclear missile launches and detonations as part of the US defence network. Thats a small part of how in the nuclear war films NORAD can see where all the missiles come from and detonate
cool or what???No they won't stop VHF tracking which is why i would only have a VHF and gps tracker. The blockers i have seen do NOT BLOCK GPS they only block the gsm signal the gps will work the tracker will be able to see where it is but will have no way of communicating with the operating center as it will have no gsm(mobile phone network) coverage the reason they use this is because it works theses products were designed for use in hospitals libarys and doctors surgerys etc.
however similar limitations apply to the units used. GSM jammers sited inside a car will have little/no effect on an underbody tracker and limited impact on a higher up GSM aerial or a GSM aerial sited outside the main cabin.
So jamming GSM and GPS isnt as simple as a Ł20 chinese piece of crap off ebay as people think. Its hit and miss both for us the car owner and them the thief. Thats why its common for them to dump the car or try and find the tracker as they know they cant defeat them all.
the best defence as phil says is a layered defence of a tracker that uses GPS, GSM AND VHF as even if the maniacs have dual GSM and GPS jammers they still will never stop the VHF.
People need to open thier eyes a bit and do some decent research before making thier mind up about a security product rather than using hearsay or ebay claims.
A layered defence principle is ALWAYS better than a one hit security device.
Not entirely sane
Joined: Sep 2005
Posts: 521
Likes: 13
From: Wiltshire
There are a couple of issues with any of the tracking devices, the first is that police forces have openly said that they don't have the available resources to jump on a report of a tracker equipped vehicle theft so may well not find it if they don't have the manpower available. The second is that the determined thieves quickly get the vehicle enclosed in a full metal box (normally a shipping container) which blocks all radio frequency signals. They then have all the time in the world to move the container so that the trace leads to a dead end and while the vehicle is in the container, they can find and defeat the tracker. High end car theft is a well organised affair and compared to the money they make, the cost of a truck and container is very small.
There are a couple of issues with any of the tracking devices, the first is that police forces have openly said that they don't have the available resources to jump on a report of a tracker equipped vehicle theft so may well not find it if they don't have the manpower available.
Last edited by saph cos rob; Mar 10, 2012 at 10:39 PM.
idealy you want 2 trackers, one for you and one for the police.
JFB tech, although you are right that containers are a good blocker, they dont totally block the vhf signal tracker uses so if you have a decent 3 way GPS/GSM/VHF live tracker then it will show a live trail to the container then if response is quick enough, a vhf signal that can be picked up within a mile as opposed to the 5 miles or so for a cop car tracking a car on the road. Aircraft can track much further ranges.
Thats why you want your own tracker so you can live follow the car before the container is shifted. Trust me, if you ring the cops saying ive found my stolen car and will retake it by force and assault people, they will come dead quick to protect the criminals from being assaulted
JFB tech, although you are right that containers are a good blocker, they dont totally block the vhf signal tracker uses so if you have a decent 3 way GPS/GSM/VHF live tracker then it will show a live trail to the container then if response is quick enough, a vhf signal that can be picked up within a mile as opposed to the 5 miles or so for a cop car tracking a car on the road. Aircraft can track much further ranges.
Thats why you want your own tracker so you can live follow the car before the container is shifted. Trust me, if you ring the cops saying ive found my stolen car and will retake it by force and assault people, they will come dead quick to protect the criminals from being assaulted
Fiesta ZS. FF feat nov'11
Joined: Oct 2011
Posts: 507
Likes: 0
From: Newcastle!
cobra Trak5 is 670 fitted and a 215 year subscription.
Texts when battery on car is low, car moved without card, battery is disconnected, cables are cut, signal is blcked, car is towed, car is jacked up.
Comes with 2 drivers cards. Cobra have the ability to shut down the engine on the say so of the police.
It really is an awesome peice of kit. Also, a live phone call is recived in less than 10 secs of an alert text being recived.
Texts when battery on car is low, car moved without card, battery is disconnected, cables are cut, signal is blcked, car is towed, car is jacked up.
Comes with 2 drivers cards. Cobra have the ability to shut down the engine on the say so of the police.
It really is an awesome peice of kit. Also, a live phone call is recived in less than 10 secs of an alert text being recived.
Last edited by Rossy43; Mar 11, 2012 at 01:18 PM.
police policies are too restrictive on grounds of public safety.
I can stop my engine myself by text and like fuck would i wait either.
Fiesta ZS. FF feat nov'11
Joined: Oct 2011
Posts: 507
Likes: 0
From: Newcastle!
And the vehicle becomes stationary at some point no?
when its driven into a metal container.....
like im waiting that long, just remote stop it wherever they are and they can coast to a halt and run away.
if you think the police can communicate and co-ordinate with cobra quickly enough to stop the car at a set of lights or a junction then you are sadly mistaken.
like im waiting that long, just remote stop it wherever they are and they can coast to a halt and run away.
if you think the police can communicate and co-ordinate with cobra quickly enough to stop the car at a set of lights or a junction then you are sadly mistaken.
Last edited by Psycho Warren; Mar 11, 2012 at 01:28 PM.
Fiesta ZS. FF feat nov'11
Joined: Oct 2011
Posts: 507
Likes: 0
From: Newcastle!
when its driven into a metal container.....
like im waiting that long, just remote stop it wherever they are and they can coast to a halt and run away.
if you think the police can communicate and co-ordinate with cobra quickly enough to stop the car at a set of lights or a junction then you are sadly mistaken.
like im waiting that long, just remote stop it wherever they are and they can coast to a halt and run away.
if you think the police can communicate and co-ordinate with cobra quickly enough to stop the car at a set of lights or a junction then you are sadly mistaken.
Last edited by Rossy43; Mar 11, 2012 at 01:32 PM.
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