Bird has been the industry's standard in radio frequency product reliability for over 75 years. The criticality and definition of "reliability" can range from accuracy and precision to longevity and clarity. That can differ. The uses can range from commercial applications to military maintenance to electronic military instrumentation. That can differ. The measures of radio frequency products’ quality (and success) can range from data analysis to power measurement to signal strength. That can differ.  What cannot differ is the single-minded devotion to reliability — no matter the criticality, use, or metrics. Bird = the world's most reliable radio frequency products because we have to.