Radar detecter alternatives. Techie input needed

[igor]

for christs sake man ya ride a BMW what tje hell do ya need a detector for

[gman]

what you need is something that absorbs rader energy and laser energy.something that stops them getting a fix on you.no fix no reading.stop trying to over engineer it and it becomes simple.

[Jeremy]

What speeds you talkin' 'bout? Relativistic? You have FTL drive on bike?
Do you find time dilation a problem?
"I went out for a ride .When I got home the Apes had taken over Earth!"
Don't think you'll have a problem with doppler effect ,red shift,blue shift etc on a terrestrial vehicle .

The doppler effect at 300km/h is ~1.00075, sure it doesn't seem like much however your allready trying to detect a very faint signal that lies with a very narrow band. And the shift is enough to require compensation. They have to take it into account with digital signal transmission when they're launching satellites and stuff, otherwise the signal gets all screwed up as well.

[Slingshot]

I'd be interested in hearing from the coppers on this site that have had experience using a laser to ping a bike. I've got a few questions...

What part of the bike is generally preferred to target?
At normal operating range, how much of a bike would you see through the scope?
In your experience, does the colour of the bike/car have any impact on the ease of locking onto the target?
Likewise, matt vs. gloss paint...any difference?

[250learna]

On that reflection type thingy, get some shiny shiny plastic type stuff (forgot name) and put it over the licence plate, will save you tickets from flashers.

(due to reflection delay etc, so all they see is a white feedback produced by the flash, no matter what - and it is still fine for anyone following directly behind you such as the police and such)

No I dont do this

yeah but its against the law to cover the plate with that stuff, just like the reflective spray that they sell in cans... so you mite get a ticket from a patrol car :eyepoke:

A bloke down the pub told me that many of the nations police coughiffers may or may not be slowly migrating over to a new radio system soon. A digital one. This 'guy' told me that the system may or be transmitting AVLS (advanced vehicle loaction system, similar to GPS) information, information that is sent by the police vehicle, over the radio system to their respective HQs informing the dispatcher where, within 10 metres, each vehicle is.

Now imagine that you had access to an AVLS/radio decoder..........if only I could remember the 'blokes' name.

I wouldnt be surprised, Wellington combined taxis do that with their whole fleet bout 400cars i think. They know exactly where you are when you are loged on.

thats my 2c anyhoo

[250learna]

but who need to avoid the cops at high speeds... have fun and play with them

[Biff]

This has already happened in Northants, UK. They are supposed to be un-scanable. It works on a similar system to mobile phones, I think. In fact the handset is quite like a mobile with extra features on it.

I can neither confirm nor deny I led the project team responsible for selling your force, in fact the entire UK police force, the digital radio service (they don't own it) that you're referring to. It's a Tetra based technology operated by Airwave (part of 02).

Thankfully NZ police have opted for a different digital radio standard as Tetra is pretty lame. It is ‘scannable’ if you have access to a Tetra scanner (www.tetrascanner.com) and access to their algorithm - allegedly. And no - I couldn't possible tell you where to get hold of this algorithm, cos that would be illegal, and you might be a :raghead: (please don't take offence - but I've always wanted to find a use for this smiley).

Your force uses Sepura SRP2000 handsets I believe, and you're right - they do look a like mobile phones, but are more feature rich, and bloody expensive in comparison.

I be a hexpert on these things ya know. I just love waffling on about things I know about and showing off!

[Sniper]

but who need to avoid the cops at high speeds... have fun and play with them

Nice, where did you get that?

[250learna]

Nice, where did you get that?

http://www.linienmc.dk/mc-uheld/2003...sh_police.mpeg
its bout 13mb woth, but its worth it

[Krusti]

Have a read through here....http://www.radarjammertechnology.com/index.php

[Stevo]

This is interesting
http://www.radar.co.nz/nz/report1.html

[Zapf]

you think you would be able to buy cheap radar absorbing material from china these days :P

[Stevo]

you think you would be able to buy cheap radar absorbing material from china these days :P

Close I have just found a laser equivalent of what you have suggested! I have found these two very in depth (but if you have a spare quarter hour) well worth reading sites even if they are American.
http://www.speedzones.com/
http://motorcycleinfo.calsci.com/Electronic.html#Radar
The second one here is not quite as good.