• 2-6A-Series, 2 Watt RF Attenuators

    Wanted: The Perfect Impedance

    Posted 05/01/2019 by Bird RF Engineer

    Since 1942, Bird has been supplying quality instruments for RF power measurement for 50 ohm coaxial line systems, and since 1942 we have had customers asking why 50 ohms is the standard impedance in the United States. This is a great question! So today, we will explore why 50 ohms has become the integer-of-choice in the US as well as the math behind this decision.