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About Benchmarking

CAI Benchmarking Schemes

CAI benchmarking lays down minimum standards of product performance based on specified parameters for satisfactory signal reception and network distribution.  The testing and certification does not cover the standard of construction and durability.  These factors are left to individual manufacturer warranty descriptions.

There are two certification schemes - UHF aerials and coaxial cables.

The specifications for both have been compiled by industry wide committees who monitor the implementation of the schemes through the CAI Assessment Executive.

Applicants and holders of CAI benchmark certification are bound by legal binding contracts that secure adherence to all aspects of the certification*.

Sample testing of products sold to the trade or in the open market ensures ongoing conformity.

Both schemes are at the moment purely a voluntary arrangement within the industry.  However they are widely adopted by broadcasters and government departments.

Benchmarked products should always be used in conjunction with the installation practice laid down in CAI Codes of Practice and the recommendations in DTG R Books. http://dtg.org.uk/publications/books.html


AerialThis scheme lays down the minimum standards for the technical performance of UHF TV aerials based on the specific requirements for satisfactory digital terrestrial TV (DTT) reception.

Aerials are categorised into 2 standards, the standard achieved marked within the CAI benchmark logo found on the product packaging.  Both standards relate to aerials designed to minimise interference from Long Term Evolution products (LTE).

Standard F - Is the new LTE standard for 'Fringe' aerial reception and should provide acceptable reception for homes on the edge of the primary service area.
Standard S - Is the new LTE standard for 'Standard' aerial reception and is an intermediate level suitable for use across the whole of a DTT coverage area.

If you are an aerial manufacturer and have an aerial that you would like tested for certification the Guidelines on Process for Product Testing AERIAL document will detail all that you need to know.

The CAI/DTG Guidelines for the use of benchmarked aerials document can be downloaded here.

The current list of aerials on the aerial benchmark scheme can be downloaded here.


This scheme lays down minimum standards for the technical performance of coaxial cable based on the specific requirements for satisfactory reception and network distribution of signals from terrestrial or satellite transmissions.

There are currently 7 cable benchmarks:

Test HouseTwin 065  downloadable here
100 downloadable here
125 downloadable here
165 downloadable here
RG6-CAI-SDU downloadable here
100 5 Core downloadable here
Twin 100 downloadable here


If you are a cable manufacturer and have a cable that you would like to get tested and certified the Guidelines on Process for Product Testing CABLE document will detail all that you need to know.

The current list of cables on the cable benchmark scheme can be found here.

* CAI logos are registered trademarks and any misuse will meet with legal action.  Any misuse of the benchmark certification such as fraudulent claims or advertising product as certified which has not been tested, or persistent advertising of product where certification has expired, will be dealt with by trading standards.



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