Study › Technician › T1D › T1D02

T1D02

COMMISSION'S RULES · Authorized and prohibited transmissions; Sale of equipment

T1D02§ 97.113(b), 97.111(b)T1D →

Under which of the following circumstances are one-way transmissions by an amateur station prohibited?

  1. AAnnouncements of upcoming ham radio operating events
  2. BBroadcasting
  3. CInternational Morse Code Practice
  4. DTelecommand or transmissions of telemetry
Why Section 97.113(b) bars amateur stations from broadcasting, meaning one-way transmissions intended for reception by the general public. The rule is about who the intended audience is, not about the transmission being one-way: 97.111(b) specifically permits several one-way modes, including telecommand, telemetry, beacon signals, Morse code practice, and bulletins of interest to amateur radio operators. So a one-way transmission aimed at fellow hams is fine, while one aimed at the public is not.
Watch out Code practice, telemetry/telecommand, and announcements about ham radio events are all one-way transmissions the rules expressly allow, so none of them is the prohibited category.
One-way is OK for hams, not for the public. If the general public is the target audience, it's broadcasting and it's banned.
HamSandwich explanation, first draft. The question and answers are the NCVEC text.
47 CFR 97.113(b) Prohibited transmissions.

(a) No amateur station shall transmit:

(1) Communications specifically prohibited elsewhere in this part;

(2) Communications for hire or for material compensation, direct or indirect, paid or promised, except as otherwise provided in these rules;

(3) Communications in which the station licensee or control operator has a pecuniary interest, including communications on behalf of an employer, with the following exceptions:

(i) A station licensee or station control operator may participate on behalf of an employer in an emergency preparedness or disaster readiness test or drill, limited to the duration and scope of such test or drill, and operational testing immediately prior to such test or drill. Tests or drills that are not government-sponsored are limited to a total time of one hour per week; except that no more than twice in any calendar year, they may be conducted for a period not to exceed 72 hours.

(ii) An amateur operator may notify other amateur operators of the availability for sale or trade of apparatus normally used in an amateur station, provided that such activity is not conducted on a regular basis.

(iii) A control operator may accept compensation as an incident of a teaching position during periods of time when an amateur station is used by that teacher as a part of classroom instruction at an educational institution.

(iv) The control operator of a club station may accept compensation for the periods of time when the station is transmitting telegraphy practice or information bulletins, provided that the station transmits such telegraphy practice and bulletins for at least 40 hours per week; schedules operations on at least six amateur service MF and HF bands using reasonable measures to maximize coverage; where the schedule of normal operating times and frequencies is published at least 30 days in advance of the actual transmissions; and where the control operator does not accept any direct or indirect compensation for any other service as a control operator.

(4) Music using a phone emission except as specifically provided elsewhere in this section; communications intended to facilitate a criminal act; messages encoded for the purpose of obscuring their meaning, except as otherwise provided herein; obscene or indecent words or language; or false or deceptive messages, signals or identification.

(5) Communications, on a regular basis, which could reasonably be furnished alternatively through other radio services.

(b) An amateur station shall not engage in any form of broadcasting, nor may an amateur station transmit one-way communications except as specifically provided in these rules; nor shall an amateur station engage in any activity related to program production or news gathering for broadcasting purposes, except that communications directly related to the immediate safety of human life or the protection of property may be provided by amateur stations to broadcasters for dissemination to the public where no other means of communication is reasonably available before or at the time of the event.

(c) No station shall retransmit programs or signals emanating from any type of radio station other than an amateur station, except propagation and weather forecast information intended for use by the general public and originated from United States Government stations, and communications, including incidental music, originating on United States Government frequencies between a manned spacecraft and its associated Earth stations. Prior approval for manned spacecraft communications retransmissions must be obtained from the National Aeronautics and Space Administration. Such retransmissions must be for the exclusive use of amateur radio operators. Propagation, weather forecasts, and manned spacecraft communications retransmissions may not be conducted on a regular basis, but only occasionally, as an incident of normal amateur radio communications.

(d) No amateur station, except an auxiliary, repeater, or space station, may automatically retransmit the radio signals of other amateur station.

eCFR text as of 1 Sep 2026 · read on ecfr.gov
47 CFR 97.111(b) Authorized transmissions.

(a) An amateur station may transmit the following types of two-way communications:

(1) Transmissions necessary to exchange messages with other stations in the amateur service, except those in any country whose administration has notified the ITU that it objects to such communications. The FCC will issue public notices of current arrangements for international communications.

(2) Transmissions necessary to meet essential communication needs and to facilitate relief actions.

(3) Transmissions necessary to exchange messages with a station in another FCC-regulated service while providing emergency communications;

(4) Transmissions necessary to exchange messages with a United States government station, necessary to providing communications in RACES; and

(5) Transmissions necessary to exchange messages with a station in a service not regulated by the FCC, but authorized by the FCC to communicate with amateur stations. An amateur station may exchange messages with a participating United States military station during an Armed Forces Day Communications Test.

(b) In addition to one-way transmissions specifically authorized elsewhere in this part, an amateur station may transmit the following types of one-way communications:

(1) Brief transmissions necessary to make adjustments to the station;

(2) Brief transmissions necessary to establishing two-way communications with other stations;

(3) Telecommand;

(4) Transmissions necessary to providing emergency communications;

(5) Transmissions necessary to assisting persons learning, or improving proficiency in, the international Morse code; and

(6) Transmissions necessary to disseminate information bulletins.

(7) Transmissions of telemetry.

eCFR text as of 1 Sep 2026 · read on ecfr.gov
← T1D01 All of T1D T1D03 →

The rest of T1D

  1. T1D01 With which countries are FCC-licensed amateur radio stations prohibited from exchanging communications?
  2. T1D02 Under which of the following circumstances are one-way transmissions by an amateur station prohibited?
  3. T1D03 When is it permissible to transmit messages encoded to obscure their meaning?
  4. T1D04 Under what conditions is an amateur station authorized to transmit music using a phone emission?
  5. T1D05 When may amateur radio operators use their stations to notify other amateurs of the availability of equipment…
  6. T1D06 What, if any, are the restrictions concerning transmission of language that may be considered indecent or obs…
  7. T1D07 Which of the following is an example of an auxiliary station?
  8. T1D08 In which of the following circumstances may the control operator of an amateur station receive compensation f…
  9. T1D09 When may amateur stations transmit information in support of broadcasting, program production, or news gather…
  10. T1D10 How does the FCC define broadcasting for the Amateur Radio Service?
  11. T1D11 When may an amateur station transmit without identifying on the air?
  12. T1D12 Which of the following is required when making on-the-air test transmissions?
Baofeng UV-5R Dual Band Two Way RadioSponsored · View on Amazon →Baofeng BF-F8HP Pro Dual Band HandheldSponsored · View on Amazon →