47 CFR 97.307 - Emission standards.

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§ 97.307 Emission standards.
(a) No amateur station transmission shall occupy more bandwidth than necessary for the information rate and emission type being transmitted, in accordance with good amateur practice.
(b) Emissions resulting from modulation must be confined to the band or segment available to the control operator. Emissions outside the necessary bandwidth must not cause splatter or keyclick interference to operations on adjacent frequencies.
(c) All spurious emissions from a station transmitter must be reduced to the greatest extent practicable. If any spurious emission, including chassis or power line radiation, causes harmful interference to the reception of another radio station, the licensee of the interfering amateur station is required to take steps to eliminate the interference, in accordance with good engineering practice.
(d) For transmitters installed after January 1, 2003, the mean power of any spurious emission from a station transmitter or external RF power amplifier transmitting on a frequency below 30 MHz must be at least 43 dB below the mean power of the fundamental emission. For transmitters installed on or before January 1, 2003, the mean power of any spurious emission from a station transmitter or external RF power amplifier transmitting on a frequency below 30 MHz must not exceed 50 mW and must be at least 40 dB below the mean power of the fundamental emission. For a transmitter of mean power less than 5 W installed on or before January 1, 2003, the attenuation must be at least 30 dB. A transmitter built before April 15, 1977, or first marketed before January 1, 1978, is exempt from this requirement.
(e) The mean power of any spurious emission from a station transmitter or external RF power amplifier transmitting on a frequency between 30-225 MHz must be at least 60 dB below the mean power of the fundamental. For a transmitter having a mean power of 25 W or less, the mean power of any spurious emission supplied to the antenna transmission line must not exceed 25 µW and must be at least 40 dB below the mean power of the fundamental emission, but need not be reduced below the power of 10 µW. A transmitter built before April 15, 1977, or first marketed before January 1, 1978, is exempt from this requirement.
(f) The following standards and limitations apply to transmissions on the frequencies specified in § 97.305(c) of this part.
(1) No angle-modulated emission may have a modulation index greater than 1 at the highest modulation frequency.
(2) No non-phone emission shall exceed the bandwidth of a communications quality phone emission of the same modulation type. The total bandwidth of an independent sideband emission (having B as the first symbol), or a multiplexed image and phone emission, shall not exceed that of a communications quality A3E emission.
(3) Only a RTTY or data emission using a specified digital code listed in § 97.309(a) of this part may be transmitted. The symbol rate must not exceed 300 bauds, or for frequency-shift keying, the frequency shift between mark and space must not exceed 1 kHz.
(4) Only a RTTY or data emission using a specified digital code listed in § 97.309(a) of this part may be transmitted. The symbol rate must not exceed 1200 bauds, or for frequency-shift keying, the frequency shift between mark and space must not exceed 1 kHz.
(5) A RTTY, data or multiplexed emission using a specified digital code listed in § 97.309(a) of this part may be transmitted. The symbol rate must not exceed 19.6 kilobauds. A RTTY, data or multiplexed emission using an unspecified digital code under the limitations listed in § 97.309(b) of this part also may be transmitted. The authorized bandwidth is 20 kHz.
(6) A RTTY, data or multiplexed emission using a specified digital code listed in § 97.309(a) of this part may be transmitted. The symbol rate must not exceed 56 kilobauds. A RTTY, data or multiplexed emission using an unspecified digital code under the limitations listed in § 97.309(b) of this part also may be transmitted. The authorized bandwidth is 100 kHz.
(7) A RTTY, data or multiplexed emission using a specified digital code listed in § 97.309(a) of this part or an unspecified digital code under the limitations listed in § 97.309(b) of this part may be transmitted.
(8) A RTTY or data emission having designators with A, B, C, D, E, F, G, H, J or R as the first symbol; 1, 2, 7 or 9 as the second symbol; and D or W as the third symbol is also authorized.
(9) A station having a control operator holding a Novice or Technician Class operator license may only transmit a CW emission using the international Morse code.
(10) A station having a control operator holding a Novice Class operator license or a Technician Class operator license and who has received credit for proficiency in telegraphy in accordance with the international requirements may only transmit a CW emission using the international Morse code or phone emissions J3E and R3E.
(11) Phone and image emissions may be transmitted only by stations located in ITU Regions 1 and 3, and by stations located within ITU Region 2 that are west of 130° West longitude or south of 20° North latitude.
(12) Emission F8E may be transmitted.
(13) A data emission using an unspecified digital code under the limitations listed in § 97.309(b) also may be transmitted. The authorized bandwidth is 100 kHz.
(14) In the 60 m band:
(i) A station may transmit only phone, RTTY, data, and CW emissions using the emission designators and any additional restrictions that are specified in the table below (except that the use of a narrower necessary bandwidth is permitted):
60 M Band Emission Requirements
Emission type Emission designator Restricted to:
Phone 2K80J3E Upper sideband transmissions (USB).
Data 2K80J2D USB (for example, PACTOR-III).
RTTY 60H0J2B USB (for example, PSK31).
CW 150HA1A Morse telegraphy by means of on-off keying.
(ii) The following requirements also apply:
(A) When transmitting the phone, RTTY, and data emissions, the suppressed carrier frequency may be set as specified in § 97.303(h).
(B) The control operator of a station transmitting data or RTTY emissions must exercise care to limit the length of transmission so as to avoid causing harmful interference to United States Government stations.
[54 FR 25857, June 20, 1989; 54 FR 30823, July 24, 1989, as amended at 54 FR 39537, Sept. 27, 1989; 60 FR 15688, Mar. 27, 1995; 65 FR 6550, Feb. 10, 2000; 69 FR 24997, May 5, 2004; 77 FR 5412, Feb. 3, 2012]

Title 47 published on 2013-10-01

The following are only the Rules published in the Federal Register after the published date of Title 47.

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  • 2014-06-20; vol. 79 # 119 - Friday, June 20, 2014
    1. 79 FR 35290 - Amateur Service Rules
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      FEDERAL COMMUNICATIONS COMMISSION
      Final rule.
      Effective July 21, 2014.
      47 CFR Part 97

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

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United States Code
U.S. Code: Title 47 - TELECOMMUNICATIONS

§ 151 - Purposes of chapter; Federal Communications Commission created

§ 152 - Application of chapter

§ 153 - Definitions

§ 154 - Federal Communications Commission

§ 155 - Commission

§ 301 - License for radio communication or transmission of energy

§ 302 - Repealed. June 5, 1936, ch. 511,

§ 302a - Devices which interfere with radio reception

§ 303 - Powers and duties of Commission

§ 303a - Standards for children’s television programming

§ 303b - Consideration of children’s television service in broadcast license renewal

§ 303c - Television program improvement

§ 304 - Waiver by license of claims to particular frequency or of electromagnetic spectrum

§ 305 - Government owned stations

§ 306 - Foreign ships; application of

§ 307 - Licenses

§ 308 - Requirements for license

§ 309 - Application for license

§ 310 - License ownership restrictions

§ 311 - Requirements as to certain applications in broadcasting service

§ 312 - Administrative sanctions

§ 312a - Revocation of operator’s license used in unlawful distribution of controlled substances

§ 313 - Application of antitrust laws to manufacture, sale, and trade in radio apparatus

§ 314 - Competition in commerce; preservation

§ 315 - Candidates for public office

§ 316 - Modification by Commission of station licenses or construction permits; burden of proof

§ 317 - Announcement of payment for broadcast

§ 318 - Transmitting apparatus; operator’s license

§ 319 - Construction permits

§ 320 - Stations liable to interfere with distress signals; designation and regulation

§ 321 - Distress signals and communications; equipment on vessels; regulations

§ 322 - Exchanging radio communications between land and ship stations and from ship to ship

§ 323 - Interference between Government and commercial stations

§ 324 - Use of minimum power

§ 325 - False, fraudulent, or unauthorized transmissions

§ 326 - Censorship

§ 327 - Naval stations; use for commercial messages; rates

§ 328 - Repealed.

§ 329 - Administration of radio laws in Territories and possessions

§ 330 - Prohibition against shipment of certain television receivers

§ 331 - Very high frequency stations and AM radio stations

§ 332 - Mobile services

§ 333 - Willful or malicious interference

§ 334 - Limitation on revision of equal employment opportunity regulations

§ 335 - Direct broadcast satellite service obligations

§ 336 - Broadcast spectrum flexibility

§ 337 - Allocation and assignment of new public safety services licenses and commercial licenses

§ 338 - Carriage of local television signals by satellite carriers

§ 339 - Carriage of distant television stations by satellite carriers

§ 340 - Significantly viewed signals permitted to be carried

§ 341 - Carriage of television signals to certain subscribers

§ 342 - Process for issuing qualified carrier certification

§ 351 - Ship radio stations and operations

§ 352 - Exemptions

§ 353 - Radio equipment and operators

§ 353a - Operators and watches on radiotelephone equipped ships

§ 354 - Technical requirements of equipment on radiotelegraph equipped ships

§ 354a - Technical requirements of equipment on radiotelephone equipped ships

§ 355 - Survival craft

§ 356 - Approval of installations by Commission

§ 357 - Safety information

§ 358 - Master’s control over operations

§ 359 - Certificates of compliance; issuance, modification, and cancellation

§ 360 - Station licenses; inspection of equipment by Commission

§ 361 - Control by Commission; review of decisions

§ 362 - Forfeitures; recovery

§ 363 - Automated ship distress and safety systems

§ 381 - Vessels transporting more than six passengers for hire required to be equipped with radiotelephone

§ 382 - Vessels excepted from radiotelephone requirement

§ 383 - Exemptions by Commission

§ 384 - Authority of Commission; operations, installations, and additional equipment

§ 385 - Inspections

§ 386 - Forfeitures

§ 390 - Declaration of purpose

§ 391 - Authorization of appropriations

§ 392 - Grants for construction

§ 392a - Repealed.

§ 393 - Criteria for approval and expenditures by Secretary

§ 393a - Long-range planning for facilities

§ 394 - Establishment of National Endowment

§ 395 - Assistance for demonstration projects

§ 396 - Corporation for Public Broadcasting

§ 397 - Definitions

§ 398 - Federal interference or control

§ 399 - Support of political candidates prohibited

§ 399a - Use of business or institutional logograms

§ 399b - Offering of certain services, facilities, or products by public broadcast station

§ 401 - Enforcement provisions

§ 402 - Judicial review of Commission’s orders and decisions

§ 403 - Inquiry by Commission on its own motion

§ 404 - Reports of investigations

§ 405 - Petition for reconsideration; procedure; disposition; time of filing; additional evidence; time for disposition of petition...reconsideration of order concluding hearing or investigation; appeal of order

§ 406 - Compelling furnishing of facilities; mandamus; jurisdiction

§ 407 - Order for payment of money; petition for enforcement; procedure; order of Commission as prima facie evidence; costs; attorneys’ fees

§ 408 - Order not for payment of money; when effective

§ 409 - Hearings

§ 410 - Joint boards and commissions

§ 411 - Joinder of parties

§ 412 - Documents filed with Commission as public records; prima facie evidence; confidential records

§ 413 - Designation of agent for service; method of service

§ 414 - Exclusiveness of chapter

§ 415 - Limitations of actions

§ 416 - Orders of Commission

§ 501 - General penalty

§ 502 - Violation of rules, regulations, etc.

§ 503 - Forfeitures

§ 504 - Forfeitures

§ 505 - Venue of trials

§ 506 - Repealed.

§ 507 - Violation of Great Lakes Agreement

§ 508 - Disclosure of payments to individuals connected with broadcasts

§ 509 - Prohibited practices in contests of knowledge, skill, or chance

§ 510 - Forfeiture of communications devices

§ 521 - Purposes

§ 522 - Definitions

§ 531 - Cable channels for public, educational, or governmental use

§ 532 - Cable channels for commercial use

§ 533 - Ownership restrictions

§ 534 - Carriage of local commercial television signals

§ 535 - Carriage of noncommercial educational television

§ 536 - Regulation of carriage agreements

§ 537 - Sales of cable systems

§ 541 - General franchise requirements

§ 542 - Franchise fees

§ 543 - Regulation of rates

§ 544 - Regulation of services, facilities, and equipment

§ 544a - Consumer electronics equipment compatibility

§ 545 - Modification of franchise obligations

§ 546 - Renewal

§ 547 - Conditions of sale

§ 548 - Development of competition and diversity in video programming distribution

§ 549 - Competitive availability of navigation devices

§ 551 - Protection of subscriber privacy

§ 552 - Consumer protection and customer service

§ 553 - Unauthorized reception of cable service

§ 554 - Equal employment opportunity

§ 555 - Judicial proceedings

§ 555a - Limitation of franchising authority liability

§ 556 - Coordination of Federal, State, and local authority

§ 557 - Existing franchises

§ 558 - Criminal and civil liability

§ 559 - Obscene programming

§ 560 - Scrambling of cable channels for nonsubscribers

§ 561 - Scrambling of sexually explicit adult video service programming

§ 571 - Regulatory treatment of video programming services

§ 572 - Prohibition on buy outs

§ 573 - Establishment of open video systems

§ 601 - Interstate Commerce Commission and Postmaster General; duties, powers, and functions transferred to Commission

§ 602, 603 - Repealed.

§ 604 - Effect of transfer

§ 605 - Unauthorized publication or use of communications

§ 606 - War powers of President

§ 607 - Effective date of chapter

§ 608 - Separability

§ 609 - Short title

Statutes at Large

Title 47 published on 2013-10-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 47 CFR 97 after this date.

  • 2014-06-20; vol. 79 # 119 - Friday, June 20, 2014
    1. 79 FR 35290 - Amateur Service Rules
      GPO FDSys XML | Text
      FEDERAL COMMUNICATIONS COMMISSION
      Final rule.
      Effective July 21, 2014.
      47 CFR Part 97