From The RadioReference Wiki
An emission designator is a code associated with a frequency that gives information about the frequency's bandwidth and the nature of the signal on the frequency.
For scanner users, it can be useful for determining whether a frequency is analog or digital, and even whether the frequency transmits voice and/or data.
Common Emission Designators
|100HN0N||Speed Radar (10525 MHz X band; 24150 MHz Ka band)|
|150HA1A||Continuous Wave Telegraphy (manually read Morse Code)|
|2K80J3E||Single sideband suppressed carrier voice (USB, LSB)|
|3K30F1D||6.25 kHz SCADA link (CalAmp Viper SC - 173 MHz)|
|4K00F1D||6.25 kHz data NXDN (IDAS, NEXEDGE)|
|4K00F1E||6.25 kHz voice NXDN (IDAS, NEXEDGE)|
|4K00F1W||6.25 kHz voice and data NXDN (IDAS, NEXEDGE)|
|4K00F2D||6.25 kHz analog CW ID NXDN (IDAS, NEXEDGE)|
|4K00J1D||Amplitude Compandored Sideband (pilot tone/carrier)|
|4K00J2D||Amplitude Compandored Sideband (pilot tone/carrier)|
|4K00J3E||Amplitude Compandored Sideband (pilot tone/carrier) voice|
|5K76G1E||P25 CQPSK voice|
|6K00A3E||Double sideband AM voice (AM mode in RRDB)|
|6K00F1D||SCADA Carrier Frequency Shift Keying|
|6K00F2D||SCADA Audio Frequency Shift Keying|
|6K00F3D||SCADA Analog data that is not AFSK (variable tone, DTMF, etc.)|
|7K30F1D||Futurecom "MOBEXCOM" DVRS (mobile repeater) data (P25 waveform, slightly narrower occupied bandwidth)|
|7K30F1E||Futurecom "MOBEXCOM" DVRS (mobile repeater) voice (P25 waveform, slightly narrower occupied bandwidth)|
|7K60FXD||2-slot DMR (Motorola MOTOTRBO) TDMA data|
|7K60FXE||2-slot DMR (Motorola MOTOTRBO) TDMA voice|
|8K10F1D||P25 Phase I C4FM data|
|8K10F1E||P25 Phase I C4FM voice (P25 mode in RRDB)|
|8K10F1W||P25 Phase II subscriber units (Harmonized Continuous Phase Modulation - H-CPM)|
|8K30F1D||12.5 kHz data NXDN (IDAS, NEXEDGE)|
|8K30F1E||12.5 kHz voice NXDN (IDAS, NEXEDGE)|
|8K30F1W||P25 Phase I C4FM hybridized voice and data applications (most commonly seen on trunked licenses)|
|8K30F7W||12.5 kHz voice and data NXDN (IDAS, NEXEDGE)|
|8K50F9W||Harris OpenSky (2 slot narrowband)|
|8K70D1W||P25 Linear Simulcast Modulation ASTRO (9.6 kbps in 12.5 kHz channelspace)|
|9K30F1D||SCADA/ Remote Control|
|9K80D7W||P25 2-slot TDMA (Harmonized Differential Quadrature Phase Shift Keyed modulation - H-DQPSK)|
|10K0F1D||LTI Automated Vehicle Location (AVL) system - LT6 Radio Modem|
|10K0F1D||Motorola 3600 baud trunked control channel on narrowband channel|
|10K0F1D *||Motorola Widepulse ASTRO simulcast data|
|10K0F1D *||Motorola Widepulse ASTRO simulcast control channel|
|10K0F1E *||Motorola Widepulse ASTRO simulcast voice|
|11K2F3E||2.5 kHz deviation FM "narrowband 12.5 kHz" analog voice (FMN mode in RRDB - may also be 11K0 and 11K3 bandwidth)|
|12K1F9W||Harris OpenSky (NPSPAC - 4 slot)|
|13K1F9W||Harris OpenSky (SMR - 4 slot)|
|13K6W7W||Motorola iDEN (900 MHz)|
|14K0F1D||Motorola 3600 baud trunked control channel (NPSPAC)|
|16K0F1D *||Motorola 3600 baud trunked control channel|
|16K0F2D *||4 kHz deviation FM audio frequency shift keying (72 MHz fire alarm boxes)|
|16K0F3E *||4 kHz deviation FM analog voice (NPSPAC) (FM mode in RRDB)|
|16K8F1E *||Encrypted Quantized Voice (Motorola DVP, DES, DES-XL on NPSPAC)|
|20K0F1E *||Encrypted Quantized Voice (Motorola DVP, DES, DES-XL - NOT P25 DES-OFB/AES)|
|20K0F3E *||5 kHz deviation FM "wideband 25 kHz" analog voice (FM mode in RRDB)|
|20K0G7W||Motorola iDEN (800 MHz)|
|20K0W7W||Motorola iDEN (800 MHz)|
|300KF8E||Broadcast FM with Subsidiary Carrier (SCA)|
|2M40W7D||Remote Control Video (digital, non-NTSC)|
* When used between 136 - 512 MHz in Part 90 use, this technology is not compliant with 2013 narrowbanding requirements and must be discontinued by January 1, 2013. As of January 1, 2011, this emission may no longer be applied for between 136 - 512 MHz in Part 90 use, unless it fits within the existing contours of an already licensed system. These emissions may not appear on a new license or be used to extend the footprint of an already licensed wideband system beyond what existed prior to January 1, 2011.
Note that an emission designator identifies the characteristics of the signal and is not unique to only one type of technology or manufacturer. More than one type of deployed technology may use the same emission designator.
F1D, F2D, or F3D?
Each of these suffixes denote data, but choosing or interpreting the appropriate characteristic from the ITU definitions may be confusing. In very simple terms:
F1D = data transmission employing frequency shift keying (FSK) where the carrier frequency itself shifts.
F2D = data transmission employing audio frequency shift keying (AFSK) such as amateur radio 1.2 kbps packet or Zetron Model 26 fire station alerting.
F3D = data transmission employing analog information, such as DTMF tones, as in Whelen tornado sirens or Knox Box activation, or a tone whose pitch varies with the process being measured. Although two-tone volunteer or station alerting may be considered analog information, a single F3E suffix should suffice for incidental use when tone/voice "paging" (alerting) is employed.
Use of F9W Suffix
Some license application preparers have used the suffix F9W to indicate that multiple different emissions within the specified bandwidth are possible. This simplifies filling information into the FCC 601 form, but does not reflect each specific modulation type. For example, 11K2F9W may indicate that the system toggles between narrowband analog voice and P25 (or some other) digital emission, but not at the same time. A strict interpretation of ITU emissions indicates that the F9W suffix is both analog and digital simultaneously, and is therefore incorrect. A properly completed 601 form should itemize each discrete emission intended so the technologies used may be easily identified.
The exception to using F9W is Harris OpenSky, which has been certificated by the FCC as F9W, although F7W may be better descriptive.
- FCC Page on Emission Designators
- APCO Page on Emission Designators
- ITU-R SM.1138 - Link to download page for current ITU document.
- What certain non-voice modes sound like - by Gary Kahn, KB9UKD
- Radio Service Code
- FCC Station Class Codes
- 47CFR2.201 Emission, modulation, and transmission characteristics
- 47CFR2.202 Bandwidths
- How Project 25 two-slot TDMA works