Two Radar Detectors At Once?

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Apr 27, 2007 | 12:31 PM

#21

TJ VETT

Racer

Joined: Oct 2004

Posts: 491

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From: Washington Twp. New Jersey

I have a cordless solo and a passport and the one time I tryed both on a trip one definitely interferred with the other!!!!!!! Tom

Apr 27, 2007 | 01:22 PM

#22

WilliamCall

Racer

Joined: Oct 2004

Posts: 432

Likes: 49

From: Southern Maryland

I think the following link has the best explaination as to not using two detectors at once,

http://www.guysoflidar.com/twodetectors.html

Apr 27, 2007 | 04:41 PM

#23

Craig Wagner

Pro

Joined: Nov 2005

Posts: 605

Likes: 0

Quote:

Originally Posted by WilliamCall

I think the following link has the best explaination as to not using two detectors at once,

http://www.guysoflidar.com/twodetectors.html

What kind of radical lunatic are you, introducing science and fact into this discussion.

Apr 27, 2007 | 09:27 PM

#24

LoneStarFRC

Team Owner

Joined: May 2001

Posts: 36,836

Likes: 244

From: Dear Karma, I have a list of people you missed.

St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16

Quote:

Originally Posted by WilliamCall

I think the following link has the best explaination as to not using two detectors at once,

http://www.guysoflidar.com/twodetectors.html

Very good article and explains some of the physics involved. In order to prevent local oscillator "bleed back" through the antenna, one particular method that is employed is to use mutiple RF stages (preferrably 3) through which the incoming signal passes and it's these that prevent the signal from being radiated back out. Naturally it costs more to build a receiver with 3 RF stages in it and can account, in part, for the added price.
The design of military electronics equipment has had this requirement for a very long time and the existence of local oscillator feedback also accounts for the FAA's ban on electronic devices during certain critical stages of flight so as to not interfere with any onboard Nav/Comm equipment.
Yes Virginia, receivers can (and some do) transmit.

Last edited by LoneStarFRC; May 1, 2007 at 04:27 PM. Reason: Typos; yak!

Apr 28, 2007 | 08:20 AM

#25

Cajun99

Le Mans Master

Joined: Aug 2001

Posts: 6,213

Likes: 1

From: South Alabama

Quote:

Originally Posted by seawolf

Incorrect, most do have "leakage" and "may" interfere with each other. That is how some police systems can detect if you are using a radar detector.

Ok..Ok..after reading the guysoflidar info I am humble enuff to change my position on "it's not a good idea to run two together" as I did not thoroughly understand the oscillator issues prior to this. I've been aware of leakage issues for a while, considering Virginia's LEO radar detector "detectors"...but didn't and still don't consider radar detectors in general as active transmitters. They don't transmit a signal per se, but rather they bleed some of their own electrical activity. After reading the article I now understand this issue much better.