🚀 go-pugleaf

> 
> 
> Simple question, I hope easy answer:
> 
> 	I have a vinyl nose mask on my car.  It has cloth backing.  The
> ...
> 
> 	My question:  Is the front of my car 'stealthy' (sorry for the word,
> but what the h*ll); i.e. will it make a bad reflector for radar signals?

Most likely, the plastic cover is trasparant to radio waves.  Therefore,
the answer is no.

> PS:  Anyone ever use a radar interference unit?  What do you use it for if
> all the ads say "be carefull in use when near police radar"?

I've never heard of this, but from your description it sounds like an ECM
(electronic counter measure) device.  ECM is used by the military to counter
radar and is an active device as opposed to your attempted stealth device
which is passive.  If this is the case, it would be illegal to use since
a radio station license would be required from the FCC which you could not
obtain for police frequencies.  Also, there are probably laws (state and/or
local) pertaining to interference of police activities.  Police radar works
by measuring the Doppler shift of the reflected signal frequency against the
transmitted signal frequency.  The simplest method of interference is to
"white wash" the radar spectrum with noise so that the reflected signal cannot
be detected.  In this case, you would be invisible to the radar.  A more
sophisticated method is to detect (from the vehicle) the transmitted radar
signal and re-transmit a strong signal that is frequency shifted down.  This
will have the effect of fooling the radar unit into thinking that your speed
is lower than it actually is.  Of course you could also shift the frequency up.
This will fool not only the the radar unit but also the cop.  He'll take the
unit into the shop to be fixed when it reads a speed of 250 MPH in a 35 MPH
zone.  BTW, I've been told by someone who works in the ECM field that it is
possible to make a passive ECM device for police radar by constructing a
properly designed antenna/reflector.  However, he would not elaborate.

I will repeat, such devices are illegal.