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Radio Frequency Interference

Dayton DUI Attorney Charles Rowland > DUI Law  > DUI Process  > Radio Frequency Interference

Radio Frequency Interference

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Radio frequency interference (RFI) or electromagnetic interference can arise when radio signals transmitted in proximity to a breath testing instrument are amplified in a way indistinguishable from electronic signals generated by the instrument during an analysis.  Most instruments are shielded from such interference, have RFI detectors that prevent testing if significant RFI sources are present or both.  Breath testing protocols typically prohibit the use of handheld transmitters in the proximity of the instrument while it is being operated (National Safety Council, 1992).  Subject testing protocols that include the analysis of air blanks, known alcohol samples and agreement of duplicate subject test results can be used to demonstrate the lack of RFI.

If you find yourself accused of drunk driving, CONTACT Dayton DUI attorney Charles M. Rowland II at (937) 318-1384 [318-1DUI], 1-888-ROWLAND [888-769-5263] or visit www.DaytonDUI.com.

Portions of the above were taken from Garriott, Medical-Legal Aspects of Alcohol, 4th ed 2003.
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Charles Rowland


Charles M. Rowland II has been representing the accused drunk driver for over 20 years. Contact him at (937) 318-1384 if you find yourself facing a DUI (now called OVI) charge.

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