Naked Science Forum

Non Life Sciences => Technology => Topic started by: MartinTheK on 14/08/2009 03:02:34

Title: car remote clicker phenomenon - a kitchen scfience gizmo?
Post by: MartinTheK on 14/08/2009 03:02:34
I recently had gone out of range to lock my car via the remote clicker, but I remembered that someone had once said that you could extend the clicker's range by using your mouth as some sort of reflecting antenna. It works!

You open your mouth towards the car and then point the remote at your phaynx and push the button Shazaam! it works.
Title: car remote clicker phenomenon - a kitchen scfience gizmo?
Post by: Stefanb on 14/08/2009 03:33:06
It is most likely just the aliens messing with you. I'm sure out of some control system on their ship they have a button that unlocks your car whenever they see you pointing your keys at your mouth.

That's what I'd do if I was an alien anyway :P
Title: car remote clicker phenomenon - a kitchen scfience gizmo?
Post by: Nizzle on 14/08/2009 12:25:12
If you want to extend the range of your remote, anal probing is the way to go!
Title: car remote clicker phenomenon - a kitchen scfience gizmo?
Post by: Don_1 on 14/08/2009 13:18:59
I just tried this, it worked, sort of, the top of my head opened!!!!
Title: car remote clicker phenomenon - a kitchen scfience gizmo?
Post by: MartinTheK on 20/08/2009 00:54:51
Tsk! Tsk! and this in the cradle of the great Francis Bacon!

I am describing a repeatable phenomenon here.

If you take a 2003 Honda Accord with a standard remote you can reliably (and repeatably)
extend the remote's range by bouncing the signal out of your open mouth if you shoot the remote at your pharynx from about a foot away.

But be careful you don't do it around "smart" people who just might accuse you of witchcraft.
Title: car remote clicker phenomenon - a kitchen scfience gizmo?
Post by: Nizzle on 20/08/2009 06:04:00
Is it required to have a nice parabolic throat cavity? Or will any throat do?

To be truly scientific, you should try with a whole set of throats [;)]
Title: car remote clicker phenomenon - a kitchen scfience gizmo?
Post by: RD on 20/08/2009 06:42:15
Quote from: Nizzle on 20/08/2009 06:04:00
Is it required to have a nice parabolic throat cavity? Or will any throat do?

Radio wavelength is too long for throat (or temple) to be a parabolic reflector,
however the whole body could be acting as an antenna.

Try pointing the remote at your temple and you may find the extended range effect is not throat/mouth specific.

http://www.instructables.com/id/Extending-the-range-of-your-keyless-entry./
Title: car remote clicker phenomenon - a kitchen scfience gizmo?
Post by: MartinTheK on 23/08/2009 17:27:43
This opens another avenue of enquiry.

Is it possible to make a bank shot off a fence? Is car remote snooker ion our future?

I will try a temple shot when I go off to buy groceries today.

What frequency do these things operate at?
Title: car remote clicker phenomenon - a kitchen scfience gizmo?
Post by: RD on 24/08/2009 01:29:44
Quote from: MartinTheK on 23/08/2009 17:27:43
I will try a temple shot when I go off to buy groceries today.

Don't mix up the remote with your tazer (http://en.wikipedia.org/wiki/Taser)  [:)].


Quote from: MartinTheK on 23/08/2009 17:27:43
What frequency do these things operate at?

Can depend on country ...

Quote
RF Receiver ... 315 MHz (North America), 433 MHz (UK and ROW).
http://www.rangerovers.net/repairdetails/becm/alarm.html

So the wavelength is approximately 3/4 of a meter.

Throat height on an average male would be about two wavelengths from the ground.

Quote
When a transmitter is connected to an antenna by a feed line, the impedance of the antenna and feed line must match exactly for maximum energy transfer from the feed line to the antenna to be possible. The impedance of the antenna varies based on many factors including: the antenna's natural resonance at the frequency being transmitted, the antenna's height above the ground
http://en.wikipedia.org/wiki/Standing_wave_ratio#Practical_implications_of_SWR