Spectrum Management Resources

Examples of Commonly Observed Emission Designators

60H0J2BPSK31
100HN0NSpeed Radar (10525 MHz X band; 24150 MHz Ka band)
150HA1AContinuous Wave Telegraphy (manually read Morse Code)
2K80J2BHF RTTY (Radio Teletype)
2K80J2DHF PACTOR-III
2K80J3EHF Single sideband suppressed carrier voice (USB or LSB, not at the same time)
3K00H2BHF ALE MIL-STD-188-141A/FED-STD-1045
3K30F1D6.25 kHz SCADA link (CalAmp Viper SC - 173 MHz)
4K00F1D6.25 kHz data NXDN (Narrow IDAS, NEXEDGE)
4K00F1E6.25 kHz voice NXDN (Narrow IDAS, NEXEDGE)
4K00F1W6.25 kHz voice and data NXDN (Narrow IDAS, NEXEDGE)
4K00F2D6.25 kHz analog CW ID NXDN (Narrow IDAS, NEXEDGE)
4K00J1DAmplitude Compandored Sideband (pilot tone/carrier)
4K00J2DAmplitude Compandored Sideband (pilot tone/carrier)
4K00J3EAmplitude Compandored Sideband (pilot tone/carrier) voice
5K60F2DSCADA
5K76G1EP25 Phase I CQPSK voice (typically used for simulcast systems - this is NOT P25 Phase II)
6K00A3EDouble sideband AM voice
6K00F1DSCADA Carrier Frequency Shift Keying
6K00F2DSCADA Audio Frequency Shift Keying
6K00F3DSCADA Analog data that is not AFSK (variable tone, DTMF, etc.)
7K30F1DFuturecom "MOBEXCOM" DVRS (mobile repeater) data (P25 waveform, slightly narrower occupied bandwidth)
7K30F1EFuturecom "MOBEXCOM" DVRS (mobile repeater) voice (P25 waveform, slightly narrower occupied bandwidth)
7K60FXD2-slot DMR (Motorola MOTOTRBO) TDMA data
7K60FXE2-slot DMR (Motorola MOTOTRBO) TDMA voice
8K10F1DP25 Phase I C4FM data
8K10F1EP25 Phase I C4FM voice (typically used for single-site systems)
8K10F1WP25 Phase II subscriber units (Harmonized Continuous Phase Modulation - H-CPM)
8K30F1D12.5 kHz data NXDN (Wide IDAS, NEXEDGE)
8K30F1E12.5 kHz voice NXDN (Wide IDAS, NEXEDGE)
8K30F1WP25 Phase I C4FM hybridized voice and data applications (most commonly seen on trunked licenses)
8K30F7W12.5 kHz voice and data NXDN (Wide IDAS, NEXEDGE)
8K50F9WHarris OpenSky (2 slot narrowband)
8K70D1WP25 Linear Simulcast Modulation ASTRO (9.6 kbps in 12.5 kHz channelspace)
9K20F1DZetron-based alphanumeric paging/alerting system (seen in practice using Daniels base stations)
9K30F1DSCADA/ EOD Robot Remote Control
9K80D7WP25 Phase II fixed-end 2-slot TDMA (Harmonized Differential Quadrature Phase Shift Keyed modulation - H-DQPSK), per Motorola literature
9K70F1DP25 Linear Simulcast Modulation "WCQPSK" data (per Harris MASTR-V literature)
9K70F1EP25 Linear Simulcast Modulation "WCQPSK" voice (per Harris MASTR-V literature)
9K80F1DP25 Phase II fixed-end 2-slot TDMA H-DQPSK data, per Harris MASTR-V literature
9K80F1EP25 Phase II fixed-end 2-slot TDMA H-DQPSK voice (interpolation of MASTR-V literature)
10K0F1DLTI Automated Vehicle Location (AVL) system - LT6 Radio Modem
10K0F1DMotorola 3600 baud trunked control channel on narrowband channel
10K0F1DRD-LAP 9.6 kbps data on narrowband channel
10K0F1DMotorola Widepulse ASTRO simulcast data
10K0F1DMotorola Widepulse ASTRO simulcast control channel
10K0F1EMotorola Widepulse ASTRO simulcast voice
11K2F2DAudio frequency shift keying within a 12.5 kHz channelspace (commonly used for 1.2 kbps packet, FFSK station alerting, and AFSK tornado siren signaling)
11K2F3DDTMF or other audible, non-frequency shift signaling, such as Whelen tornado sirens or "Knox-Box®" activation
11K2F3E2.5 kHz deviation FM "narrowband 12.5 kHz" analog voice, 11.25 kHz occupied bandwidth (11K0 and 11K3 prefixes are effectively considered the same as 11K2); 30 - 50 MHz licensees DO NOT need to convert to this.
11K2F9WFormerly and incorrectly used as a catch-all narrowband emission for analog and digital use. Each appropriate emission should be listed discretely.
12K1F9WHarris OpenSky (NPSPAC - 4 slot)
13K1F9WHarris OpenSky (SMR - 4 slot)
13K6W7WMotorola iDEN (900 MHz)
14K0F1DMotorola 3600 baud trunked control channel (NPSPAC)
16K0F1DMotorola 3600 baud trunked control channel
16K0F1DRD-LAP 9.6 kbps NPSPAC
16K0F2D4 kHz deviation FM audio frequency shift keying (72 MHz fire alarm boxes)
16K0F3E4 kHz deviation FM analog voice (NPSPAC)
16K8F1EEncrypted Quantized Voice (Motorola DVP, DES, DES-XL on NPSPAC)
17K7D7DMotorola HPD High Performance Data - "Astro 25" suite, as Motorola HAI (High performance data Air Interface) - 700/800 MHz - requires 25 kHz channelspace
20K0D1WReduced power TETRA - PowerTrunk 4/TDMA fixed-end (simultaneous mixed modes)
20K0D1EReduced power TETRA - PowerTrunk 4/TDMA fixed-end (voice)
20K1D1DReduced power TETRA - PowerTrunk 4/TDMA fixed-end (data)
20K0F1DRD-LAP 19.2 kbps within a wideband channel (2013 compliant, meets data throughput requirement)
20K0F1EEncrypted Quantized Voice (Motorola DVP, DES, DES-XL - NOT P25 DES-OFB/AES)
20K0F3E5 kHz deviation FM "wideband 25 kHz" analog voice – Continues to be authorized for 30 - 50 MHz systems after 1 Jan 2013
20K0G7WMotorola iDEN (800 MHz)
20K0W7WMotorola iDEN (800 MHz)
21K0D1WTETRA ETS 300 392 Standard
30K0DXWTDMA Cellular (North America)
40K0F8WAMPS Cellular
200KF8EBroadcast FM with Subsidiary Communications Subcarrier (SCS)
300KGXWGSM Cellular
300KG7WEDGE (Enhanced Data rates for GSM Evolution)
1M25F9WCDMA Cellular
2M40W7DRemote Control Video (digital, non-NTSC)
5M00G7DPublic Safety LTE (all four emissions used)
5M00W7WPublic Safety LTE (all four emissions used)
5M00G2DPublic Safety LTE (all four emissions used)
5M00D7DPublic Safety LTE (all four emissions used)
6M00C7WATSC Video (Digital TV)
5M75C3FNTSC Video, also with 250K0F3E aural carrier

* Revised 11/29/2012

Microwave emissions: Check with your manufacturer regarding equipment type, configuration, and throughput

Note: As most communications systems are unique, these emission designators are presented for informational purposes only. They are not intended to be a definitive guide to licensing. If you are unsure of the correct emission designator to use, consult an authoritative source familiar with your particular system and its particular configuration. When in doubt, consult your system's manufacturer. This is not intended to be an all-inclusive list. Some of the terms used in this list are trademarks of their respective manufacturers.

The company, product and service names used in this listing are for identification purposes only. All trademarks and registered trademarks are the property of their respective owners.

For additions, corrections, and comments, send to afc@apcointl.org

Emission Designators: The following system of designating emission, modulation and transmission characteristics shall be employed.

a) Emissions are designated according to their classification and their necessary bandwidth.
b) A minimum of three symbols are used to describe the basic characteristics of radio waves. Emissions are classified and symbolized according to the following characteristics.
1. First Symbol - type of modulation of the main carrier.
2. Second Symbol - nature of signal(s) modulating the main carrier
3. Third Symbol - type of information to be transmitted.
c) First Symbol - types of modulation of the main carrier.
1.Emission of an unmodulated carrierN
2.Emission in which the main carrier is amplitude-modulated (including cases where sub-carriers are angle-modulated):
Doubled-sidebandA
Single-sideband, full carrierH
Single-sideband, reduced or variable level carrierR
Single-sideband, suppressed carrierJ
Independent sidebandsB
Vestigial sidebandC
3. Emission in which the main carrier is angle-modulated:
Frequency modulationF
Phase ModulationG
Note: Whenever frequency modulation "F" is indicated, Phase modulation "G" is also acceptable.
4. Emission in which the main carrier is amplitude and angle- modulated either simultaneously or in a pre-established sequenceD
5. Emission of pulses:
Sequence of unmodulated pulsesP
   A sequence of pulses:
   Modulated in amplitudeK
   Modulated in width/durationL
   Modulated in Position/PhaseM
   In which the carrier is angle-modulated during the period of pulseQ
   Which is a combination of the foregoing or is produced by other meansV
6. Cases not covered above, in which an emission consists of the main carrier modulated, either simultaneously or in a pre-established sequence, in a combination of two or more of the following modes amplitude, angle, pulseW
7. Cases not otherwise coveredX
d) Second Symbol - nature of signal(s) modulating the main carrier:
1. No modulating signal0
2. A single channel containing quantized or digital information without the use of a modulating sub-carrier, excluding time-division multiplex1
3. A single channel containing quantized or digital information with the use of a modulating sub-carrier, excluding time-division multiplex2
4. A single channel containing analog information3
5. Two or more channels containing quantized or digital information7
6. Two or more channels containing analog information8
7. Composite system with one or more channels containing quantized or digital information, together with one or more channels containing analog information9
8. Cases otherwise not coveredX
e) Third symbol - type of information to be transmitted:
1. No information transmittedN
2. Telegraphy - for aural receptionA
3. Telegraphy - for automatic receptionB
4. FacsimileC
5. Data transmission, telemetry, telecommandD
6. Telephony (including sound broadcasting)E
7. Television (video)F
8. Combination of the aboveW
9. Cases not otherwise coveredX

Bandwidths:

a) Occupied bandwidth: The frequency bandwidth such that, below its lower and above its upper frequency limits, the mean powers radiated are each equal to 0.5 percent of the total mean power radiated by a given emission.

b) Necessary bandwidth: For a given class of emission, the minimum value of the occupied bandwidth sufficient to ensure the transmission of information at the rate and with the quality required for the system employed under specified conditions. Emission useful for the good functioning of the receiving equipment as, for example, the emission corresponding to the carrier of reduced carrier systems, shall be included in the necessary bandwidth.

1. The necessary bandwidth shall be expressed by three numerals and one letter. The letter occupies the position of the decimal point and represents the unit of bandwidth. The first character shall be neither zero nor K, M and G.

2. Necessary Bandwidths: between 0.001 and 999 Hz shall be expressed in Hz (letter H); between 1.00 to 999 KHz shall be expressed in KHz (letter K); between 1.00 and 999 MHz shall be expressed in MHz (letter M); between 1.00 and 999 GHz shall be expressed in GHz (letter G).

3. Examples

0.002 Hz->H0026 KHz->6K00
0.1 Hz->H10012.5 KHz->12K5
25.3 Hz->25H3180.4 KHz->180K
400 Hz->400H180.5 KHz->181K
2.4 KHz->2K40180.7 KHz->181K

Standard Channel Spacing/Bandwidth

Frequency Band ( MHz)Channel Spacing (KHz)Authorized Bandwidth (KHz)
Below 25 2----
25-502020
72-762020
150-1747.5 125/11.25/6 1, 3
216-220 56.2520/11.25/6
220-22254
406-512 26.25 125/11.25/6  1, 3, 6
806-809/851-85412.520
809-824/854-8692520 6
896-901/935-94012.513.6
902-928 4----
929-9302520
1427-1432 5----
2450-2483.5 2, 3----
Above 2500 2----

 

1 For stations authorized on or after August 16, 1995

2 Bandwidths for radiolocation stations in the 420-450 MHz band and for stations operating in bands subject to this footnote will be reviewed and authorized on a case-by-case basis.

3 Operations using equipment designed to operate with a 25 kHz channel bandwidth will be authorized a 20 kHz bandwidth. Operations using equipment designed to operate with a 12.5 kHz channel bandwidth will be authorized a 11.25 kHz bandwidth. Operations using equipment designed to operate with a 6.25 kHz channel bandwidth will be authorized a 6 kHz bandwidth. All stations must operate on channels with a bandwidth of 12.5 kHz or less beginning January 1, 2013, unless the operations meet the efficiency standard of §90.203(j)(3).

4 The maximum authorized bandwidth shall be 12 MHz for non-multilateration LMS operations in the band 909.75-921.75 MHz and 2 MHz in the band 902.00-904.00 MHz. The maximum authorized bandwidth for ultilateration LMS operations shall be 5.75 MHz in the 904.00-909.75 MHz band; 2 MHz in the 919.75-921.75 MHz band; 5.75 MHz in the 921.75-927.25 MHz band and its associated 927.25-927.50 MHz narrowband forward link; and 8.00 MHz if the 919.75-921.75 MHz and 921.75-927.25 MHz bands and their associated 927.25-927.50 MHz and 927.50-927.75 MHz narrowband forward links are aggregated.

5 See §90.259.

6 Operations using equipment designed to operate with a 25 kHz channel bandwidth may be authorized up to a 22 kHz  bandwidth if the equipment meets the Adjacent Channel Power limits of §90.221.

NOTE: The actual emission that should be added to the license application is the emission designation as listed on the equipment's type acceptance.  This information should be available in the technical specifications for your radios as listed by the manufacturer.