47 C.F.R. § 97.305 – Authorized emission types.

(a) Except as specified elsewhere in this part, an amateur station may transmit a CW emission on any frequency authorized to the control operator.
(b) A station may transmit a test emission on any frequency authorized to the control operator for brief periods for experimental purposes, except that no pulse modulation emission may be transmitted on any frequency where pulse is not specifically authorized and no SS modulation emission may be transmitted on any frequency where SS is not specifically authorized.

(c) A station may transmit the following emission types on the frequencies indicated, as authorized to the control operator, subject to the standards specified in § 97.307(f):

Wavelength band	Frequencies	Emission types authorized	Standards see § 97.307, paragraph(s):
(1) LF:
(i) 2200 m	Entire band	RTTY, data	(f)(3).
(ii) 2200 m	Entire band	Phone, image	(f)(1), (2).
(2) MF:
(i) 630 m	Entire band	RTTY, data	(f)(3).
(ii) 630 m	Entire band	Phone, image	(f)(1), (2).
(iii) 160 m	Entire band	RTTY, data	(f)(3).
(iv) 160 m	Entire band	Phone, image	(f)(1), (2).
(3) HF:
(i) 80 m	Entire band	RTTY, data	(f)(3), (9).
(ii) 75 m	Entire band	Phone, image	(f)(1), (2).
(iii) 60 m	5.332, 5.348, 5.3515-5.3665, 5.373, 5.405 MHz	Phone, RTTY, data	(f)(14).
(iv) 40 m	7.000-7.100 MHz	RTTY, data	(f)(3), (9).
(v) 40 m	7.075-7.100 MHz	Phone, image	(f)(1), (2), (9), (11).
(vi) 40 m	7.100-7.125 MHz	RTTY, data	(f)(3), (9).
(vii) 40 m	7.125-7.300 MHz	Phone, image	(f)(1), (2).
(viii) 30 m	Entire band	RTTY, data	(f)(3).
(ix) 20 m	14.00-14.15 MHz	RTTY, data	(f)(3).
(x) 20 m	14.15-14.35 MHz	Phone, image	(f)(1), (2).
(xi) 17 m	18.068-18.110 MHz	RTTY, data	(f)(3).
(xii) 17 m	18.110-18.168 MHz	Phone, image	(f)(1), (2).
(xiii) 15 m	21.0-21.2 MHz	RTTY, data	(f)(3), (9).
(xiv) 15 m	21.20-21.45 MHz	Phone, image	(f)(1), (2).
(xv) 12 m	24.89-24.93 MHz	RTTY, data	(f)(3).
(xvi) 12 m	24.93-24.99 MHz	Phone, image	(f)(1), (2).
(xvii) 10 m	28.0-28.3 MHz	RTTY, data	(f)(3).
(xviii) 10 m	28.3-28.5 MHz	Phone, image	(f)(1), (2), (10).
(xix) 10 m	28.5-29.0 MHz	Phone, image	(f)(1), (2).
(xx) 10 m	29.0-29.7 MHz	Phone, image	(f)(2).
(4) VHF:
(i) 6 m	50.1-51.0 MHz	MCW, phone, image, RTTY, data	(f)(2), (5).
(ii) 6 m	51.0-54.0 MHz	MCW, phone, image, RTTY, data, test	(f)(2), (5), (8).
(iii) 2 m	144.1-148.0 MHz	MCW, phone, image, RTTY, data, test	(f)(2), (5), (8).
(iv) 1.25 m	219-220 MHz	Data	(f)(13).
(v) 1.25m	222-225 MHz	RTTY, data, test MCW, phone, SS, image	(f)(2), (6), (8).
(5) UHF:
(i) 70 cm	Entire band	MCW, phone, image, RTTY, data, SS, test	(f)(6), (8).
(ii) 33 cm	Entire band	MCW, phone, image, RTTY, data, SS, test, pulse	(f)(7), (8), and (12).
(iii) 23 cm	Entire band	MCW, phone, image, RTTY, data, SS, test	(f)(7), (8), and (12).
(iv) 13 cm	Entire band	MCW, phone, image, RTTY, data, SS, test, pulse	(f)(7), (8), and (12).
(6) SHF:
(i) 5 cm	Entire band	MCW, phone, image, RTTY, data, SS, test, pulse	(f)(7), (8), and (12).
(ii) 3 cm	Entire band	MCW, phone, image, RTTY, data, SS, test	(f)(7), (8), and (12).
(iii) 1.2 cm	Entire band	MCW, phone, image, RTTY, data, SS, test, pulse	(f)(7), (8), and (12).
(7) EHF:
(i) 6 mm	Entire band	MCW, phone, image, RTTY, data, SS, test, pulse	(f)(7), (8), and (12).
(ii) 4 mm	Entire band	MCW, phone, image, RTTY, data, SS, test, pulse	(f)(7), (8), and (12).
(iii) 2.5 mm	Entire band	MCW, phone, image, RTTY, data, SS, test, pulse	(f)(7), (8), and (12).
(iv) 2 mm	Entire band	MCW, phone, image, RTTY, data, SS, test, pulse	(f)(7), (8), and (12).
(v) 1 mm	Entire band	MCW, phone, image, RTTY, data, SS, test, pulse	(f)(7), (8), and (12).
(vi) 1 mm	Above 275 GHz	MCW, phone, image, RTTY, data, SS, test, pulse	(f)(7), (8), and (12).

[54 FR 25857, June 20, 1989; 54 FR 39536, Sept. 27, 1989; 55 FR 22013, May 30, 1990, as amended at 55 FR 30457, July 26, 1990; 60 FR 15688, Mar. 27, 1995; 64 FR 51471, Sept. 23, 1999; 71 FR 66465, Nov. 15, 2006; 75 FR 27204, May 14, 2010; 77 FR 5412, Feb. 3, 2012; 82 FR 27215, June 14, 2017; 85 FR 64069, Oct. 9, 2020; 88 FR 85127, Dec. 7, 2023; 91 FR 1431, Jan. 14, 2026]