Only specially certified and licensed transceivers may be used; the manufacturer must provide a declaration of conformity as well as a concise manual in German and a CE mark.
The Federal Network Agency has laid out strict parameters for modulation, bandwidth and channel spacing in its ordinance.
Kenwood, Motorola, Retevis and a German re-seller, selling modified Wouxun radios under the brand "Team Tecom" are the only companies for Freenet devices.
Foreign regulatory bodies usually do not permit use of Freenet devices since the frequencies are often already allocated for different radio services.
Due to possible interference with Swiss military networks, it is not permitted to use the Freenet frequencies in the Black Forest and on the Swabian Alb at elevations of 600 metres (2000') or above.