The i.AM.radio Transmitter and companion extended range antenna tuning unit is FCC certified as I.D.# DLB5LTT98
The i.AM. 100mw unlicensed transmission system is FCC approved for unlicensed broadcast under Part 15.219 of the FCC rules. Our certification includes the use of our external "range extender" antenna tuning unit, defined as the final device in the transmission system.
Tests have been recently conducted to confirm that the final input power is within the maximum 100mw at this final stage and every transmitter is factory calibrated to conform to this input power prior to shipping.
Copies of these recently performed tests are available here.
When transmitting a radio broadcast signal in the commercial AM band, different Federal regulations apply. These vary depending on your status (licensed / unlicensed, individual, institution, government agency, etc.), desired coverage range, and frequency.
For some, licenses allowing broader coverage are available.
Part 15 / subpart C of the rules of the Federal Communications Commission govern the use of “Intentional Radiators.” These are the regulations that apply to users who want to broadcast without a license on the AM band. These regulations outline the technical details regarding field strength, power, and transmitter frequency accuracy, and permitted spurious emission limits. The original and full texts of these various sections are below, however, the most pertinent regulations for most Part 15 broadcasters include:
15.209 - Radiated emission limits; general requirements
15.219 - Operation in the band 510-1705 kHz.
15.221 - Operation in the band 525-1705 kHz.
15.239 - Operation in the band 88-108 MHz. (for FM)
All part 15 sections are conveniently available at the FCC website. There are also some pretty good resources provided by the FCC including the web site titled "Low Power" Broadcast Radio Stations and the federally authored document entitled “Understanding the FCC Regulations for Low-Power, Non-Licensed Transmitters
Unlicensed Broadcasting for Educational Institutions
Special provisions were enacted by the FCC in 1990 which allow the relatively unrestricted broadcasting of an AM signal that remains contained within the campus or grounds of the institution. As long as the signal is contained to the owned property of the institution, no content, antenna, or output power restrictions are enforced.
Specific regulations are highlighted on this rulemaking notice. Available products from Radio Systems can be found at their Low Power AM Radio and their free radiate page.
Licensed Low-Power Broadcasting for Government Entities and Municipalities
Under PART 90.242, within the “Private Land Mobile Radio Services” section of the FCC rules are regulations for the use of “Travelers Information Radio Stations,” available only for use by Government entities (State Parks, Highway authorities, municipalities, etc.) More information is available at the FCC web site. The rulemaking is per this document and from our distributor, Information Station Specialists.
To avoid competition and confusion with licensed commercial stations that share the AM band, TIS stations are restricted from airing commercials, music, and must band limit their frequency response above 3000 cycles.
i. AM. radio