Radio Frequency Interference (RFI) in Breathalyzers
In February 1982, Smith & Wesson, a major manufacturer of DUI breath testing devices, notified law enforcement agencies that its Breathalyzer Model 1000 had been found to experience interference from radio frequency transmissions under certain DUI test conditions, resulting in false test results. Subsequent investigation suggested that various power levels also affected Breathalyzer accuracy in Models 900 and 900A.
The potential sources of radio frequency interference (RFI) within the law enforcement environment are numerous – for example, AM and FM radios, police station dispatchers, hand-held police transmitters, teletypes, and police radar units. Each of these may emit the kind of interference that could cause specific DUI breath alcohol test devices to render false results. It was then learned that the federal government (National Bureau of Standards) was testing for RFI sensitivity in every type of breath testing device currently in use by law enforcement agencies in DUI investigations.
On September 10, 1982, Smith & Wesson issued a customer advisory suggesting that all breathalyzers used in drunk driving investigations be tested as a matter of preparedness for possible courtroom testimony to avoid the issue of RFI in breathalyzers.
"They will fight strategically to help you win your case."
These are the best lawyers in LA/OC when it comes to DUI cases. They will fight strategically to help you win your case. My ...Kendall L.
"I would recommend this firm with no qualms!"
I received counsel in a sensitive legal matter from Lawrence Taylor Sr., and his advice was spot on. I did some research and ...Jerry S.
"Christopher always made me aware of what was going on with my hearings, and got me the best outcome possible."
When you need to get a lawyer, you aren't usually in a great situation. I wasn't at least. Christopher and his team never ...Jessica S.
"Chris not only got me down to a Wet Reckless but was able to significantly reduce the penalties I would face."
Im am so glad that I read the reviews of Taylor and Taylor after my first "incident" and immediately contacted them. Chris ...Suzi J.
"Thankfully Mr. Taylor was able to help fight my case without me ever having to go to court"
You should never drink and drive anywhere, but especially don't do it in la Jolla! Cops down here have nothing better to do ...Steven K.
"Jeanne Normande is a great lawyer. She knows how the Riverside court judges work."
Jeanne Normande is a great lawyer. She knows how the Riverside court judges work. She will fight for you and will get you the ...Joe E.
"Mrs. Normandeau is by far the hardest-working and most diligent attorney I have ever met."
I cannot express enough gratitude towards Taylor and Taylor's Attorney, Jeanne Normandeau. I hired Mrs. Normandeau for a VERY ...Bruce R.
"This is a top level law firm. The Bible of DUI's comes from this firm!"
This is a top level law firm. The Bible of DUI's comes from this firm! These are the guys other attorneys call when they are ...Tania C.
"Won DMV hearing and got my case expunged for a minor issue"
Truly great team of lawyers. Handled everything the very best they could. Won DMV hearing and got my case expunged for a ...Nick T.
"I have come across many attorneys in my life and I have never been treated as well as I have her"
I have come across many attorneys in my life and I have never been treated as well as I have here. Every phone call was ...Anthony D.
With an average of 32 years of experience, a top A-V rating, and a listing in the Bar Register of Preeminent Lawyers, the firm continues to be widely recognized as California’s premier DUI defense attorney's and has twice been recognized in the American Bar Association Journal for its specialization and unique technical support staff of former law enforcement, blood-alcohol and DMV experts.