IEEE 187-1951

IEEE 187-1951 is a standards document for radio receivers that addresses the open field method of measuring spurious radiation from frequency modulation and television broadcast receivers. It is relevant to electromagnetic testing because it helps define how unwanted emissions are measured outside the receiver in a controlled field setup. For engineers and laboratories working with broadcast receiver performance, IEEE 187-1951 supports more consistent evaluation and comparison of results.

What is IEEE 187-1951?

IEEE 187-1951 sets out a technical approach for measuring spurious radiation from FM and television broadcast receivers using an open field method. In practical terms, it focuses on how receiver emissions are assessed in a test environment that reduces interference and improves repeatability. The standard is useful where measurement consistency matters, especially for comparing receiver designs or verifying performance against defined limits. As a superseded IEEE 187-1951 document, it reflects an established method within radio-frequency and broadcast engineering.

Where is IEEE 187-1951 used?

This standard is mainly used in broadcast receiver testing, electromagnetic compatibility work, and laboratory measurement of radiated emissions from consumer or professional receiver equipment. It is most relevant to frequency modulation receivers, television broadcast receivers, and test setups that require an open field measurement method. Organizations involved in receiver design, quality assurance, and compliance checking may rely on it when evaluating spurious radiation under controlled conditions. IEEE 187-1951 is especially useful where consistent test geometry and repeatable results are important.

Why is IEEE 187-1951 important?

IEEE 187-1951 matters because spurious radiation can affect both product quality and interference control. A defined measurement method helps reduce variation between test sites, supporting more reliable comparisons during development, approval, or procurement. For equipment makers and test laboratories, the standard can improve documentation and help confirm that receiver emissions are evaluated in a consistent way. In practice, this reduces uncertainty in performance assessment and supports better engineering decisions around broadcast receiver behavior.

• Open field measurement method
• Spurious radiation from receivers
• FM and television broadcast equipment
• Radiated emission testing context
• Superseded IEEE standard