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CAI benchmarking is a voluntary scheme for manufactures of
TV aerials within the industry.
The scheme is designed to set minimum standards for technical performance of
UHF TV aerials based on the requirements for DTT reception. The scheme does not
address issues regarding the build quality of the aerial.
The standards are determined by an industry wide committee who monitor the
scheme through detailed procedures and testing.
Benchmarked Aerials are graded in Standards 1 - 4 and the following is a
definition of those Standards.
Standard 1
Should provide adequate DTT reception even for homes on the fringes of coverage
areas.
Standard 2
Intermediate standard, suitable for use within the coverage.
Standard 3
Minimum standard required for good coverage conditions.
Standard 4
Recommended where better wideband performance is required.
Many people associate digital aerials with CAI benchmarked aerials, more
information about digital aerials can be found at the
Digital Aerial page.
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