Authorization for use of radios.

Every user of radio communication equipment is obliged to be in possession of the authorization title to use his equipment on the circuit of Spa-Francorchamps during the meeting of the Spa Six Hours.

Controls will be carried out by the BIPT at Spa-Francorchamps and, in the event of non-compliance, may result in legal proceedings and seizure of radio equipment.

It is therefore imperative to introduce the requests for obtaining the required authorizations via the BIPT website
https://www.bipt.be/nl/consumenten/radio/radionetwerken/mobiele-netten

BIPT also reports that the equipment used must comply with the regulations.
https://www.bipt.be/nl/consumenten/radio/radionetwerken/informatie-over-uw-radiocommunicatienetwerk

Some companies would provide non-compliant equipment.
One of the sine qua non conditions for a material to comply is that it bears the CE marking.
Pay attention, the "CE" marking should not be confused with the label "China Export":
Any non-compliant equipment will be seized by BIPT.