Sec. 22.401  Description and purposes of developmental authorizations.

    Communications common carriers may apply for, and the FCC may grant, 
authority to construct and operate one or more transmitters subject to 
the rules in this subpart and other limitations, waivers and/or 
conditions that may be prescribed. Authorizations granted on this basis 
are developmental authorizations. In general, the FCC grants 
developmental authorizations in situations and circumstances where it 
cannot reasonably be determined in advance whether a particular 
transmitter can be operated or a particular service

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can be provided without causing interference to the service of existing 
stations. For example, the FCC may grant developmental authorizations 
for:
    (a) Field strength surveys to evaluate the technical suitability of 
antenna locations for stations in the Public Mobile Services;
    (b) Experimentation leading to the potential development of a new 
Public Mobile Service or technology; or,
    (c) Stations transmitting on channels in certain frequency ranges, 
to provide a trial period during which it can be individually determined 
whether such stations can operate without causing excessive interference 
to existing services.