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Subject: Radar Detectors and GUNN Diodes
Posted by: Steve McNeese
E-mail: steven(dot)mcneese(at)sw(dot)boeing(dot)com(no spam)
This is a message I posted on a sci.electroncs newsgroup that did not get much attention. Hopefully someone here may have some information for me.
Steven McNeese ¼g¹D¡G
> Way back when in my younger years when I would speed and had a radar
> detector, I remember the thing would always get set off by grocery
> store doors. If I remember correctly, it was the X band at 10.525 Ghz
> that was affected more that the K band at 22 Ghz. Today, GUNN diodes
> are available in many frequency ranges. I have a situation on the
> residential street in front of my house where people speed
> constantly. I complain to the local police and eventually they will
> patrol or put out a mobile speed detector. This works for about a
> week or so and then its back to normal. I would like to build a
> device that can emit a radar signal in the X and K bands to hopefully
> stop these people (mostly kids) from speeding through the
> neighborhood. Is the radiation from a GUNN diode harmless to humans
> and pets? Can a simple device be built to meet this objective?
> I could probably buy a motion detector used on the grocery store
> doors, but I imagine that they would be very expensive. GUNN diodes
> by themselves run around $10-$15. If someone can provide me with a
> little help or knows if a device like this exists or where I might
> obtain a schematic, I would be grateful.
> Thanks for your help,
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