### Original link: http://www.jneuhaus.com/fccindex/10_khz.html#3_MHz

Return to the table of contents

#### Very Low Frequency

9 - 30 kHz
  - Cable locating equipment [15.213]
  - Power line carrier systems (operated by a power utility for general supervision of the power system) [15.113]

#### Low Frequency

30 - 70 kHz
  - Cable locating equipment [15.213]
  - Power line carrier systems (operated by a power utility for general supervision of the power system) [15.113]
  - 60 kHz - Radio station WWVB (time and frequency signals)
70 - 90 kHz
  - Cable locating equipment [15.213]
  - Radiolocation, land or mobile [Part 90 Subpart F]
  - International Fixed Service
  - Maritime Mobile Service
  - Power line carrier systems (operated by a power utility for general supervision of the power system) [15.113]
90 - 110 kHz
  - LORAN-C navigation system
  - Cable locating equipment [15.213]
  - 101.4 kHz - Transmitters used to detect buried electronic markers used by telephone companies [15.205(d)(2)]
  - Radiolocation, land [Part 90 Subpart ]
  - Power line carrier systems (operated by a power utility for general supervision of the power system) [15.113]
110 - 130 kHz
  - Cable locating equipment [15.213]
  - Radiolocation, land or mobile [Part 90 Subpart F]
  - Power line carrier systems (operated by a power utility for general supervision of the power system) [15.113]
  - International Fixed Service
  - Maritime Mobile Service
130 - 160 kHz
  - Cable locating equipment [15.213]
  - Power line carrier systems (operated by a power utility for general supervision of the power system) [15.113]
160 - 190 kHz
  - Cable locating equipment [15.213]
  - Intentional radiators, 1 watt max. [15.217]
    - Experimentation on "1750 meter band"
  - Power line carrier systems (operated by a power utility for general supervision of the power system) [15.113]
190 - 200 kHz
  - Radiobeacons for aircraft navigation [Part 87]
  - Cable locating equipment [15.213]
200 - 285 kHz
  - Radiobeacons for aircraft navigation [Part 87]
  - Air traffic control [Part 87]
  - Cable locating equipment [15.213]
285 - 325 kHz
  - Marine Radiobeacons
  - Cable locating equipment [15.213]
  - Power line carrier systems (operated by a power utility for general supervision of the power system) [15.113]

#### Medium Frequency

325 - 405 kHz
  - Radiobeacons for aircraft navigation [Part 87]
  - Air traffic control [Part 87]
  - Cable locating equipment [15.213]
  - Power line carrier systems (operated by a power utility for general supervision of the power system) [15.113]
405 - 435 kHz
  - Radiobeacons for aircraft navigation [Part 87]
  - Cable locating equipment [15.213]
  - Power line carrier systems (operated by a power utility for general supervision of the power system) [15.113]
435 - 490 kHz
  - Cable locating equipment [15.213]
  - Power line carrier systems (operated by a power utility for general supervision of the power system) [15.113]
  - 457 kHz
    - Working frequency for aircraft on over water flights [87.187(c)]
    - Avalanche Transceivers
500 kHz
  - International calling and distress frequency for ships and aircraft over the high seas
510 - 525 kHz
  - Radiobeacons for aircraft navigation
  - Intentional radiators, 100 milliwatts max. [15.219]
525 - 535 kHz
  - Intentional radiators, 100 milliwatts max. [15.219]
  - Carrier current broadcasting [15.221]
  - Travelers' Information Stations, 530 through 1700 kHz in 10 kHz increments [90.242]
535 - 1705 kHz
  - AM broadcast [Part 73 Subpart A]
  - Intentional radiators, 100 milliwatts max. [15.219]
  - Carrier current broadcasting [15.221]
  - Travelers' Information Stations, 530 through 1700 kHz in 10 kHz increments [90.242]
  - 1630 kHz, Public Safety, Fire, Base or mobile [90.20]
  - 1638 kHz, Aeronautical Radionavigation Service
  - 1605 - 1705 kHz, Radiolocation, no new assignments after September 30, 1985 [Part 90 Subpart F]
1705 - 1750 kHz
  - Radiolocation [Part 90 Subpart F]
  - 1708 kHz, Aeronautical Radionavigation Service
  - 1722 kHz, Public Safety, Police, Base or mobile[90.20]
  - 1730 kHz, Public Safety, Police, Base or mobile[90.20]
1750 - 1800 kHz
  - Disaster Communications Service [Part 99]
  - Radiolocation [Part 90 Subpart F]
1800 - 1900 kHz
  - Amateur (160 meter band) [Part 97]
1900 - 1950 kHz
  - Amateur (160 meter band) [Part 97]
  - Radiolocation [Part 90 Subpart F]
1950 - 2000 kHz
  - Amateur (160 meter band) [Part 97]
  - Radiolocation [Part 90 Subpart F]
2003 kHz
  - Maritime SSB Radiotelephone [80.373] - Intership Safety and Operational - Great Lakes only

Gap in list

2065 kHz
  - Maritime SSB Radiotelephone [80.373] - Business and Operational - All Areas.

Gap in list

2079 kHz
  - Maritime SSB Radiotelephone [80.373] - Business and Operational - All Areas.
2082.5 kHz
  - Maritime SSB Radiotelephone [80.373] - Intership Safety and Operational - All Areas. Also, intership non-commercial fishing.

Gap in list

2093 kHz
  - Maritime SSB Radiotelephone [80.373] - Intership Safety and Operational - All Areas.
2096.5 kHz
  - Maritime SSB Radiotelephone [80.373] - Business and Operational - All Areas.

Gap in list

2142 kHz
  - Maritime SSB Radiotelephone [80.373] - Intership Safety and Operational - Pacific Coast, daily, south of 42 deg. N

Gap in list

2182 kHz
  - Maritime SSB Radiotelephone [80.373] - Intership Safety and Operational - Distress, safety and calling

Gap in list

2203 kHz
  - Maritime SSB Radiotelephone [80.373] - Intership Safety and Operational - Gulf of Mexico. Also, intership non-commercial fishing.

Gap in list

2214 kHz
  - Maritime SSB Radiotelephone [80.373] - Intership Safety and Operational - All Areas.

Gap in list

2500 kHz
  - Time and frequency broadcasts, WWV and WWVH

Gap in list

2638 kHz
  - Maritime SSB Radiotelephone [80.373] - Intership Safety and Operational - All Areas.

Gap in list

2670 kHz
  - Maritime SSB Radiotelephone [80.373] - Intership Safety and Operational - U.S. Coast Guard Liaison and Maritime Safety Broadcasts

Gap in list

2738 kHz
  - Maritime SSB Radiotelephone [80.373] - Intership Safety and Operational - All Areas, except Great Lakes.

Gap in list

2830 kHz
  - Maritime SSB Radiotelephone [80.373] - Intership Safety and Operational - Gulf of Mexico only.

Gap in list

2851 kHz
  - Flight test stations - land and aircraft [Part 87 Subpart J]

Gap in list

#### High Frequency

Gap in list

3.004 MHz
  - Flight test stations - land and aircraft [Part 87 Subpart J]

Gap in list

3.023 MHz
  - Maritime SSB Radiotelephone [80.373] - Business and Operational - Government shore, ship and aircraft stations for search and rescue coordination.

Gap in list

3.23 - 3.40 MHz
  - Radiolocation, associated with 1605 - 1800 kHz, secondary to other services [Part 90 Subpart F]
  - 3.281 MHz - Flight test stations - land and aircraft [Part 87 Subpart J]

Gap in list

3.443 MHz
  - Flight test stations - land and aircraft [Part 87 Subpart J]

Gap in list

3.5 - 3.75 MHz
  - Amateur (80 meter band) [Part 97]
3.75 - 4 MHz
  - Amateur (75 meter band) [Part 97]
4.0 - 4.152 MHz
  - Maritime SSB Radiotelephone [80.373]

Gap in list

4.281 MHz
  - Maritime SSB Radiotelephone [80.373]

Gap in list

4.351 - 4.438 MHz
  - Maritime SSB Radiotelephone [80.373]

Gap in list

5.000 MHz
  - Time and frequency broadcasts, WWV and WWVH

Gap in list

5.451 MHz
  - Flight test stations - land and aircraft [Part 87 Subpart J]

Gap in list

5.469 MHz
  - Flight test stations - land and aircraft [Part 87 Subpart J]

Gap in list

5.571 MHz
  - Flight test stations - land and aircraft [Part 87 Subpart J]

Gap in list

6.200 - 6.233 MHz
  - Maritime SSB Radiotelephone [80.373]

Gap in list

6.501 - 6.525 MHz
  - Maritime SSB Radiotelephone [80.373]

Gap in list

6.550 MHz
  - Flight test stations - land and aircraft [Part 87 Subpart J]

Gap in list

6.765 - 6.795 MHz
  - Industrial, Scientific and Medical [Part 18]

Gap in list

7 - 7.3 MHz
  - Amateur (40 meter band) [Part 97]

Gap in list

8.101 - 8.300 MHz
  - Maritime SSB Radiotelephone [80.373]

Gap in list

8.707 - 8.815 MHz
  - Maritime SSB Radiotelephone [80.373]

Gap in list

8.822 MHz
  - Flight test stations - land and aircraft [Part 87 Subpart J]

Gap in list

10.000 MHz
  - Time and frequency broadcasts, WWV and WWVH

Gap in list

10.045 MHz
  - Flight test stations - land and aircraft [Part 87 Subpart J]

Gap in list

10.1 - 10.15 MHz
  - Amateur (30 meter band) [Part 97]

Gap in list

11.288 MHz
  - Flight test stations - land and aircraft [Part 87 Subpart J]

Gap in list

11.306 MHz
  - Flight test stations - land and aircraft [Part 87 Subpart J]

Gap in list

12.230 - 12.368 MHz
  - Maritime SSB Radiotelephone [80.373]

Gap in list

13.077 - 13.200 MHz
  - Maritime SSB Radiotelephone [80.373]

Gap in list

13.312 MHz
  - Flight test stations - land and aircraft [Part 87 Subpart J]

Gap in list

13.36 - 13.41 MHz
  - Radio astronomy

Gap in list

13.553 - 13.567 MHz
  - Intentional radiators, 10,000 microvolts/meter at 30 meters max. [15.225]
  - Industrial, Scientific and Medical [Part 18]

Gap in list

14 - 14.35 MHz
  - Amateur (20 meter band) [Part 97]

Gap in list

15.000 MHz
  - Time and frequency broadcasts, WWV and WWVH

Gap in list

16.360 - 16.549 MHz
  - Maritime SSB Radiotelephone [80.373]

Gap in list

17.242 - 17.410 MHz
  - Maritime SSB Radiotelephone [80.373]

Gap in list

17.964 MHz
  - Flight test stations - land and aircraft [Part 87 Subpart J]

Gap in list

18.068 - 18.17 MHz
  - Amateur (17 meter band) [Part 97]

Gap in list

18.780 - 18.846 MHz
  - Maritime SSB Radiotelephone [80.373]

Gap in list

19.755 - 19.800 MHz
  - Maritime SSB Radiotelephone [80.373]

Gap in list

20.000 MHz
  - Time and frequency broadcasts, WWV

Gap in list

21 - 21.45 MHz
  - Amateur (15 meter band) [Part 97]

Gap in list

21.931 MHz
  - Flight test stations - land and aircraft [Part 87 Subpart J]

Gap in list

22.000 - 22.180 MHz
  - Maritime SSB Radiotelephone [80.373]

Gap in list

22.696 - 22.855 MHz
  - Maritime SSB Radiotelephone [80.373]

Gap in list

24.89 - 24.99 MHz
  - Amateur (12 meter band) [Part 97]
24.990 - 25.005 MHz
  - 25000 kHz: standard frequency and time signals [2.106]
25.02 MHz
  - Industrial/Business [90.35] only stations utilized for geophysical purposes
25.04 MHz
  - Industrial/Business [90.35] oil spill containment and cleanup operations
25.06 MHz
  - Industrial/Business [90.35] only stations utilized for geophysical purposes
25.070 - 25.121 MHz
  - Maritime SSB Radiotelephone [80.373]
  - Industrial/Business [90.35]
    - 25.08 MHz - oil spill containment and cleanup operations, secondary to maritime mobile
    - 25.10 MHz - only stations utilized for geophysical purposes, secondary to maritime mobile
    - 25.12 MHz - Industrial/Business
25.14 MHz
  - Industrial/Business [90.35] only stations utilized for geophysical purposes
25.16 MHz
  - Industrial/Business [90.35]
25.18 MHz
  - Industrial/Business [90.35] only stations utilized for geophysical purposes
25.20 MHz
  - Industrial/Business [90.35]
25.22 MHz
  - Industrial/Business [90.35] geophysical stations on a secondary basis
25.24 MHz
  - Industrial/Business [90.35]
25.26 MHz
  - Industrial/Business [90.35] geophysical stations on a secondary basis
25.28 MHz
  - Industrial/Business [90.35]
25.30 MHz
  - Industrial/Business [90.35] geophysical stations on a secondary basis

Gap in list

25.55 - 25.67 MHz
  - Radio astronomy

Gap in list

25.85 - 26.48 MHz
  - Broadcast Auxiliary [Part 74 Subpart D]
  - 26.145 - 26.175 MHz only - Maritime SSB Radiotelephone [80.373] shore-to-ship

Gap in list

26.617 MHz
  - Civil Air Patrol (CAP) (according to http://rob.acol.com/~cb/freeband.html)

Gap in list

26.96 - 27.41 MHz
  - Citizens band (CB) [Part 95 - Subpart D]
    - Channel frequency chart
  - 26.96 - 27.28 MHz
    - Intentional radiators, 10,000 microvolts/meter at 30 meters max. [15.227]
    - Student experimental use (27.23 - 27.28 MHz) [5.89]
    - Industrial, Scientific and Medical (26.957 - 27.283 MHz) [Part 18 - Subpart C]
27.430 MHz
  - Industrial/Business [90.35]
27.450 MHz
  - Industrial/Business [90.35]
27.470 MHz
  - Industrial/Business [90.35]
27.490 MHz
  - Industrial/Business [90.35]
27.510 MHz
  - Industrial/Business [90.35]
27.530 MHz
  - Industrial/Business [90.35]

Gap in list

27.870 MHz
  - US Navy-MARS (according to http://rob.acol.com/~cb/freeband.html)

Gap in list

27.920 MHz
  - US Navy-MARS (according to http://rob.acol.com/~cb/freeband.html)

Gap in list

27.97 MHz
  - US Navy-MARS (according to http://rob.acol.com/~cb/freeband.html)

Gap in list

28 - 29.7 MHz
  - Amateur (10 meter band) [Part 97]

Gap in list

Go higher in frequency | Table of Contents | Links to other pages

This page written by John Neuhaus, WA2JXE <john@jneuhaus.com>. Please send me your comments and suggestions.
Last update: Mon, Sep 10, 2001

Disclaimer There is no warranty as to the accuracy or completeness of the information on these pages. All risk relating to its use is assumed by the user.