Subpart D -- Technical Standards
S 97.301 Authorized frequency bands.
The following transmitting frequency bands are available to
an amateur station located within 50 km of the Earth's surface,
within the specified ITU Region and out side any area where the
amateur service is regulated by another country of another United
States government agency.
(a) For a station having a control operator holding a
Technician, General, Advanced or Amateur Extra Class operator
license:
Wavelength ITU ITU ITU Sharing requirements
band Region 1 Region 2 Region 3 See S 97.303,
Paragraph:
VHF MHz MHz MHz
6 m --- 50-54 50-54 (a)
2 m 144-146 144-148 144-148 (a)
1.25 m --- 220-225 --- (a), (b), (e)
UHF MHz MHz MHz
70 cm 430-440 420-450 430-440 (a), (b), (f)
33 cm --- 902-928 --- (a), (b), (g)
23 cm 1240-1300 1240-1300 1240-1300 (j)
13 cm 2300-2310 2300-2310 2300-2310 (a), (b), (j)
-do- 2390-2450 2390-2450 2390-2450 (a), (b), (j)
SHF GHz GHz GHz
9 cm --- 3.3-3.5 3.3-3.5 (a), (b), (k), (l)
5 cm 5.650-5.850 5.650-5.925 5.650-5.850 (a), (b), (m)
3 cm 10.00-10.50 10.00-10.50 10.00-10.50 (b), (c), (i), (n)
1.2 cm 24.00-24.25 24.00-24.25 24.00-24.25 (a), (b), (i), (o)
EHF GHz GHz GHz
6 mm 47.0-47.2 47.0-47.2 47.0-47.2
4 mm 75.5-81.0 75.5-81.0 75.5-81.0 (b), (c), (h)
2.5 mm 119.98-120.02 119.98-120.02 119.98-120.02 (k), (p)
2 mm 142-149 142-149 142-149 (b), (c), (h), (k)
1 mm 241-250 241-250 241-250 (b), (c), (h), (q)
--- above 300 above 300 above 300 (k)
(b) For a station having a control operator holding an
Amateur Extra Class operator license:
Wavelength ITU ITU ITU Sharing requirements
band Region 1 Region 2 Region 3 See S 97.303,
Paragraph:
MF kHz kHz kHz
160 m 1810-1850 1800-2000 1800-2000 (a), (b), (c)
HF MHz MHz MHz
80 m 3.50-3.75 3.50-3.75 3.50-3.75 (a)
75 m 3.75-3.80 3.75-4.00 3.75-3.90 (a)
40 m 7.0-7.1 7.0-7.3 7.0-7.1 (a)
30 m 10.10-10.15 10.10-10.15 10.10-10.15 (d)
20 m 14.00-14.35 14.00-14.35 14.00-14.35
17 m 18.068-18.168 18.068-18.168 18.068-18.168
15 m 21.00-21.45 21.00-21.45 21.00-21.45
12 m 24.89-24.99 24.89-24.99 24.89-24.99
10 m 28.0-29.7 28.0-29.7 28.0-29.7
(c) For a station having a control operator holding an
Advanced Class operator license:
Wavelength ITU ITU ITU Sharing requirements
band Region 1 Region 2 Region 3 See S 97.303,
Paragraph:
MF kHz kHz kHz
160 m 1810-1850 1800-2000 1800-2000 (a), (b), (c)
HF MHz MHz MHz
80 m 3.525-3.750 3.525-3.750 3.525-3.750 (a)
75 m 3.775-3.800 3.775-4.000 3.775-3.900 (a)
40 m 7.025-7.100 7.025-7.300 7.025-7.100 (a)
30 m 10.10-10.15 10.10-10.15 10.10-10.15 (d)
20 m 14.025-14.150 14.025-14.150 14.025-14.150
-do- 14.175-14.350 14.175-14.350 14.175-14.350
17 m 18.068-18.168 18.068-18.168 18.068-18.168
15 m 21.025-21.200 21.025-21.200 21.025-21.200
-do- 21.30-21.45 21.30-21.45 21.30-21.45
12 m 24.89-24.99 24.89-24.99 24.89-24.99
10 m 28.0-29.7 28.0-29.7 28.0-29.7
(d) For a station having a control operator holding a
General Class operator license:
Wavelength ITU ITU ITU Sharing requirements
band Region 1 Region 2 Region 3 See S 97.303,
Paragraph:
MF kHz kHz kHz
160 m 1810-1850 1800-2000 1800-2000 (a), (b), (c)
HF MHz MHz MHz
80 m 3.525-3.750 3.525-3.750 3.525-3.750 (a)
75 m --- 3.85-4.00 --- (a)
40 m 7.025-7.100 7.025-7.100 7.025-7.100 (a)
-do- --- 7.225-7.300 --- (a)
30 m 10.10-10.15 10.10-10.15 10.10-10.15 (d)
20 m 14.025-14.150 14.025-14.150 14.025-14.150
-do- 14.225-14.350 14.225-14.350 14.225-14.350
17 m 18.068-18.168 18.068-18.168 18.068-18.168
15 m 21.025-21.200 21.025-21.200 21.025-21.100
-do- 21.30-21.45 21.30-21.45 21.30-21.45
12 m 24.89-24.99 24.89-24.99 24.89-24.99
10 m 28.0-29.7 28.0-29.7 28.0-29.7
(e) For a station having a control operator holding a
Technician or Novice Class operator license:
Wavelength ITU ITU ITU Sharing requirements
band Region 1 Region 2 Region 3 See S 97.303,
Paragraph:
HF MHz MHz MHz
80 m 3.70-3.75 3.70-3.75 3.70-3.75 (a)
40 m 7.050-7.075 7.10-7.15 7.050-7.075 (a)
15 m 21.10-21.20 21.10-21.20 21.10-21.20
10 m 28.1-28.5 28.1-28.5 28.1-28.5
(f) For a station having a control operator holding a Novice
Class operator license:
Wavelength ITU ITU ITU Sharing requirements
band Region 1 Region 2 Region 3 See S 97.303,
Paragraph:
VHF MHz MHz MHz
1.25 m --- 222.10-223.91 --- (a), (b), (e)
UHF MHz MHz MHz
23 cm 1270-1295 1270-1295 1270-1295 (i)
S 97.303 Frequency sharing requirements.
The following is a summary of the frequency sharing
requirements that apply to amateur station transmissions on the
frequency bands specified in S 97.301 of this Part. (For each ITU
Region, each frequency band allocated to the amateur service is
designated as either a secondary service or a primary service. A
station in a secondary service must not cause harmful
interference to, and must accept interference from, stations in a
primary service. See SS 2.105 and 2.106 of the FCC Rules, United
States Table of Frequency Allocations for complete requirements.)
(a) Where, in adjacent ITU Regions or Subregions, a band of
frequencies is allocated to different services of the same
category, the basic principle is the equality of right to
operate. The stations of each service in one region must operate
so as not to cause harmful interference to services in the other
Regions or Subregions. (See ITU Radio Regulations, No. 346
(Geneva, 1979).)
(b) No amateur station transmitting in the 1900-2000 kHz
segment, the 1.25 m band, the 70 cm band, the 33 cm band, the 13
cm band, the 9 cm band, the 5 cm band, the 3 cm band, the 24.05-
24.24 GHz segment, the 76-81 GHz segment, the 144-149 GHz segment
and the 241-248 GHz segment shall cause harmful interference to,
nor is protected from interference due to the operation of, the
Government radiolocation service.
(c) No amateur station transmitting in the 1900-2000 kHz
segment, the 3 cm band, the 76-81 GHz segment, the 144-149 GHz
segment and the 241-248 GHz segment shall cause harmful
interference to, nor is protected from interference due to the
operation of, stations in the non-Government radiolocation
service.
(d) No amateur station transmitting in the 30 meter band
shall cause harmful interference to stations authorized by other
nations in the fixed service. The licensee of the amateur station
must make all necessary adjustments, including termination of
transmissions, if harmful interference is caused.
(e) The 1.25 m band is allocated to the amateur, fixed and
mobile services in the United States on a co-primary basis. The
basic principle that applies is the equality of right to operate.
Amateur, fixed and mobile stations must operate so as not to
cause harmful interference to each other.
(f) In the 70 cm band:
(1) No amateur station shall transmit from north of Line A
in the 420-430 MHz segment.
(2) The 420-430 MHz segment is allocated to the amateur
service in the United States on a secondary basis, and is
allocated in the fixed and mobile (except aeronautical mobile)
services in the International Table of allocations on a primary
basis. No amateur station transmitting in this band shall cause
harmful interference to, nor is protected from interference due
to the operation of, stations authorized by other nations in the
fixed and mobile (except aeronautical mobile) services.
(3) The 430-440 MHz segment is allocated to the amateur
service on a secondary basis in ITU Regions 2 and 3. No amateur
station transmitting in this band in ITU Regions 2 and 3 shall
cause harmful interference to, nor is protected from interference
due to the operation of, stations authorized by other nations in
the radiolocation service. In ITU Region 1, the 430-440 MHz
segment is allocated to the amateur service on a co-primary basis
with the radiolocation service. As between these two services in
this band in ITU Region 1, the basic principle that applies is
the equality of right to operate. Amateur stations authorized by
the United States and radiolocation stations authorized by other
nations in ITU Region 1 shall operate so as not to cause harmful
interference to each other.
(4) No amateur station transmitting in the 449.5-450 MHz
segment shall cause interference to, nor is protected from
interference due to the operation of stations in, the space
operation service and the space research service or Government or
non-Government stations for space telecommand.
(g) In the 33 cm band:
(1) No amateur station shall transmit from within the States
of Colorado and Wyoming, bounded on the south by latitude 39\o/
N, on the north by latitude 42\o/ N, on the east by longitude
105\o/ W, and on the west by longitude 180\o/ W. This band is
allocated on a secondary basis to the amateur service subject to
not causing harmful interference to, and not receiving protection
from any interference due to the operation of, industrial,
scientific and medical devices, automatic vehicle monitoring
systems or Government stations authorized in this band.
(2) No amateur station shall transmit from those portions of
the States of Texas and New Mexico bounded on the south by
latitude 31\o/ 41' N, on the north by latitude 34\o/ 30'N, on the
east by longitude 104\o/ 11' W, and on the west by longitude
107\o/ 30'W.
(h) No amateur station transmitting in the 23 cm band, the 3
cm band, the 24.05-24.25 GHz segment, the 76-81 GHz segment, the
144-149 GHz segment and the 241-248 GHz segment shall cause
harmful interference to, nor is protected from interference due
to the operation of, stations authorized by other nations in the
radiolocation service.
(i) In the 1240-1260 MHz segment, no amateur station shall
cause harmful interference to, nor is protected from interference
due to the operation of, stations in the radionavigation-
satellite service.
(j) In the 13 cm band:
(1) The amateur service is allocated on a secondary basis in
all ITU Regions. In ITU Region 1, no amateur station shall cause
harmful interference to, and is not protected from interference
due to the operation of, stations authorized by other nations in
the fixed service. In ITU Regions 2 and 3, no station shall cause
harmful interference to, and is not protected from interference
due to the operation of, stations authorized by other nations in
the fixed, mobile and radiolocation services.
(2) In the United States, the 2300-2310 MHz segment is
allocated to the amateur service on a co-secondary basis with the
Government fixed and mobile services. In this segment, the fixed
and mobile services must not cause harmful interference to the
amateur service. No amateur station transmitting in the 2400-2450
MHz segment is protected from interference due to the operation
of industrial, scientific and medical devices on 2450 MHz.
(k) No amateur station transmitting in the 3.332-3.339 GHz
and 3.3458-3525 GHz segments, the 2.5 mm band, the 144.68-144.98
GHz, 145.45-145.75 and 146.82-147.12 GHz segments and the 343-348
GHz segment shall cause harmful interference to stations in the
radio astronomy service. No amateur station transmitting in the
300-302 GHz, 324-326 GHz, 345-347 GHz, 363-365 GHz and 379-381
GHz segments shall cause harmful interference to stations in the
space research service (passive) or Earth exploration-satellite
service (passive).
(l) In the 9 cm band:
(1) In ITU Regions 2 and 3, the band is allocated to the
amateur service on a secondary basis.
(2) In the United States, the band is allocated to the
amateur service on a co-secondary basis with the non-Government
radiolocation service.
(3) In the 3.3-3.4 GHz segment, no amateur station shall
cause harmful interference to, nor is protected from interference
due to the operation of, stations authorized by other nations in
the radiolocation service.
(4) In the 3.4-3.5 GHz segment, no amateur station shall
cause harmful interference to, nor is protected from interference
due to the operation of, stations authorized by other nations in
the fixed and fixed-satellite service.
(m) In the 5 cm band:
(1) In the 5.650-5.725 GHz segment, the amateur service is
allocated in all ITU Regions on a co-secondary basis with the
space research (deep space) service.
(2) In the 5.725-5.850 GHz segment, the amateur service is
allocated in all ITU Regions on a secondary basis. No amateur
station shall cause harmful interference to, nor is protected
from interference due to the operation of, stations authorized by
other nations in the fixed-satellite service in ITU Region 1.
(3) No amateur station transmitting in the 5.725-5.875 GHz
segment is protected from interference due to the operation of
industrial, scientific and medical devices operating on 5.8 GHz.
(4) In the 5.650-5.850 GHz segment, no amateur station shall
cause harmful interference to, nor is protected from interference
due to the operation of, stations authorized by other nations in
the radiolocation service.
(5) In the 5.850-5.925 GHz segment, the amateur service is
allocated in ITU Region 2 on a co-secondary basis with the
radiolocation service. In the United States, the segment is
allocated to the amateur service on a secondary basis to the non-
Government fixed-satellite service. No amateur station shall
cause harmful interference to, nor is protected from interference
due to the operation of, stations authorized by other nations in
the fixed, fixed-satellite and mobile services. No amateur
station shall cause harmful interference to, nor is protected
from interference due to the operation of, stations in the non-
Government fixed-satellite service.
(n) In the 3 cm band:
(1) In the United States, the 3 cm band is allocated to the
amateur service on a co-secondary basis with the non-government
radiolocation service.
(2) In the 10.00-10.45 segment in ITu Regions 1 and 3, no
amateur station shall cause interference to, nor is protected
from interference due to the operation of, stations authorized by
other nations in the fixed and mobile services.
(o) No amateur station transmitting in the 1.2 cm band is
protected from interference due to the operation of industrial,
scientific and medical devices on 24.125 GHz. In the United
States, the 24.05-24.25 GHz segment is allocated to the amateur
service on a co-secondary basis with the non-government
radiolocation and Government and non-government Earth
exploration-satellite (active) services.
(p) The 2.5 mm band is allocated to the amateur service on a
secondary basis. No amateur station transmitting in this band
shall cause harmful interference to, nor is protected from
interference due to the operation of, stations in the fixed,
inter-satellite and mobile services.
(q) No amateur station transmitting in the 244-246 GHz
segment of the 1 mm band is protected from interference due to
the operation of industrial, scientific and medical devices on
245 GHz.
S 97.305 Authorized emission types.
(a) 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.
(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 S 97.307(f) of this Part.
Wavelength Frequencies Emission types Standards
band authorized See S 97.307(f)
Paragraph:
MF
160 m entire band phone, image,
RTTY, data (1), (2), (3)
HF
80 m entire band RTTY, data (3), (9)
75 m entire band phone, image (1), (2)
40 m 7.000-7.075 MHz RTTY, data (c), (9)
-do- 7.075-7.100 MHz phone, image (1), (2), (9), (11)
-do- 7.10-7.15 MHz RTTY, data (1), (9)
-do- 7.15-7.30 MHz phone, image (1), (2)
30 m entire band RTTY, data (3)
20 m 14.00-14.15 MHz RTTY, data (3)
-do- 14.15-14.35 MHz phone, image (1), (2)
17 m 18.068-18.110 MHz RTTY, data (3)
-do- 18.110-18.168 MHz phone, image (1), (2)
15 m 21.0-21.2 MHz RTTY, data (3), (9)
-do- 21.20-21.45 MHz phone, image (1), (2)
12 m 24.89-24.93 MHz RTTY, data (3)
-do- 24.93-24.99 MHz phone, image (1), (2)
10 m 28.0-28.3 MHz RTTY, data (4)
-do- 28.3-29.5 MHz phone, image (1), (2), (10)
-do- 28.5-29.0 MHz phone, image (1), (2)
-do- 29.0-29.7 MHz phone, image (1)
VHF
6 m 50.1-51.0 MHz MCW, phone, image,
RTTY, data (2), (5)
-do- 51.0-54.0 MHz MCW, phone, image,
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