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FAQs



How can The Talking House Transmitter (TH5.0) operate without a license?


The transmitter is FCC certified (ID #DLB5LTT98) and approved for unlicensed broadcasting under Part 15.219 of FCC rules. which allow unlicensed operation of a 100mw AM transmitter without a license as long as the antenna + ground is 3 meters or fewer.
Is there a way to broadcast with more signal coverage?

Yes, if you have an outdoor antenna. The same FCC rules contained in Part 15.219 govern use of both indoor and outdoor antennas. But an outdoor antenna and especially one mounted high above the ground will yield more range. The InfOspot License Free Transmitter System provides a means of doing this. See also Extended Range.

Yes, if you are an educational institution. Special provisions were enacted by the FCC in 1990 that allow unlicensed broadcasting of an AM signal that remains contained within the campus or grounds of the institution. No content, antenna, or output-power restrictions are enforced, and no license is required under FCC Rules Part 15.221. See also Extended Range.

Yes, if you are a governmental agency and/or if you provide emergency medical response. See FCC Rules Part 90.242 which govern this form of broadcasting under Travelers Information Stations. Up to 10 watts of power are allowed, and a license is required. See also Extended Range.
What are the FCC's rules that govern these forms of broadcasting?

Unlicensed Broadcasting

These are the regulations that apply to operators 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.

Licensed

Part 90.242 of the rules of the Federal Communications Commission governs the licensing and operation of Travelers Information Stations.
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*  Until June 2017, Radio Systems, Inc., marketed a modified version of the Talking House Transmitter under the name i A.M. Radio.
   Our offering does not include any such modifications. All warranty support and services on purchases made through Radio Systems
   are handled by Radio Systems, Inc., at
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