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- From: jeh@cmkrnl.com
- Newsgroups: sci.electronics
- Subject: Re: Radar Detectors, and Radar Detector Detectors
- Message-ID: <1992Jul28.113924.608@cmkrnl.com>
- Date: 28 Jul 92 18:39:24 GMT
- References: <92Jul23.162259edt.176@orasis.vis.toronto.edu> <1992Jul23.204831.28487@news.columbia.edu>
- Organization: Kernel Mode Consulting, San Diego, CA
- Lines: 23
-
- In article <1992Jul23.204831.28487@news.columbia.edu>, gmw1@cunixa.cc.columbia.edu (Gabe M Wiener) writes:
- > In article <92Jul23.162259edt.176@orasis.vis.toronto.edu> oliverb@vis.toronto.edu (Oliver Bengtsson) writes:
- >> Could someone out there please tell me how a radar detector detector
- >>works? I thought that a radar detector was a passive device, nothing more
- >>than a receiver tuned into detect a certain radio frequency used in radar
- >>guns. If this is the case, how can they be detected?
- >
- > All receivers work by resonance, and this resonance can be detected with
- > the appropriate equipment.
-
- Nonsense. Oh, this is possible theoretically, but practically speaking it
- would be next to impossible to do at any useful working distance under field
- conditions.
-
- Radar detector detectors (and Britain's TV detector vans) operate by detecting
- spurious emissions from the receiver. In the case of the radar detector, the
- emissions come from the local oscillator. In the case of the TV set, a TV
- radiates ALL KINDS of hash, mostly harmonics from the horizontal scan
- frequency.
-
- --- Jamie Hanrahan, Kernel Mode Consulting, San Diego CA
- Internet: jeh@cmkrnl.com, hanrahan@eisner.decus.org, or jeh@crash.cts.com
- Uucp: ...{crash,eisner,uunet}!cmkrnl!jeh
-