Emission Designator

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(Emission Designators)
(Emission Designators)
Line 183: Line 183:
*8K00A2D - 8 kHz AFSK with modulating sub-carrier - remote control  
*8K00A2D - 8 kHz AFSK with modulating sub-carrier - remote control  
*8K00N0N - 8 kHz OOK on off keying remote control  
*8K00N0N - 8 kHz OOK on off keying remote control  
 +
*7K64F1D - Wireless dog training remote transmitter (510mW output) 27.195 MHz
*7K60FXE - DMR digital voice - TDMA 2-slot DMR MotoTRBO digital voice
*7K60FXE - DMR digital voice - TDMA 2-slot DMR MotoTRBO digital voice
*7K60FXD - DMR data - TDMA 2-slot DMR MotoTRBO data
*7K60FXD - DMR data - TDMA 2-slot DMR MotoTRBO data

Revision as of 18:31, 5 September 2022

Emission Designators

See also: Signal Identification

Often just the last 3 characters are used. For example, A3E or A3 to indicate AM voice or AM telephony, F3E or F3 to indicate FM voice or FM telephony. Other sources will omit characters. For example, 8K5F3E instead of 8K50F3E or 20KF3E or 12K F3E instead of 20K0F3E,12K0F3E etc. Some radio communications equipment manufacturers interchange designators for interoperable designators (for example, 16K0F3E and 20K0F3E).

For analog voice modes, such as AM, FM and SSB, bandwidths do not need to be identical. Sometimes regulations require use of narrowband emissions, including the Part 90 land mobile radio services on VHF and UHF bands above 150 MHz in the United States and the NTIA-regulated military/government land mobile radio bands 137-144 MHz, 148-150.8 MHz, 380-399.9 MHz and 406-420 MHz. There are some exceptions to this, including amateur radio (ham radio), VHF marine radio and a handful of other services (for example, the license-free MURS service permits use of 5 kHz deviation FM - or wideband FM on 2 of the 5 MURS frequencies but the other 3 MURS frequencies are restricted to the same 2.5 kHz deviation that regular land mobile services such as Business Radio and Public Safety users are required to use under FCC regulations.

  • Analog voice and data


  • 80K0F3E - military FM +/- 20 kHz deviation - 100 kHz channel steps - PRC-8, PRC-8A, PRC-9, PRC-9A, PRC-10, PRC-10A, SCR-300, etc.
  • 75K0F3E - military FM - 100 kHz channel steps
  • 60K0F3E - military FM +/- 15 kHz deviation - land mobile and fixed links high-HF and low-VHF 20-55 MHz 100 kHz channels
  • 54K0F3E - wireless microphones VHF band (169-172 MHz and 174-216 MHz bands, 54 kHz bandwidth)
  • 40K0F8W - AMPS cellular (analog 800 MHz cellular service, now defunct, 30 kHz channels)
  • 40K0F3E - military FM 10 kHz deviation - AN/VRC-12, AN/PRC-77 "WIDEBAND" mode for "X-mode" (see 36K0F1D and 40K0F1D)
  • 36K0F3E - military FM 30-76 MHz/30-88 MHz 9 kHz FM deviation SINCGARS - VRC-12, PRC-25, PRC-68, PRC-77, etc. "36F3"
  • 32K0F3E - military FM 30-88 MHz 8 kHz FM deviation SINCGARS
  • 30K0F3E - military FM 30-88 MHz 7.5 kHz FM deviation SINCGARS
  • 24K0F3E - military FM 30-88 MHz 6 kHz FM deviation - "narrow band" on PRC-1177 25 kHz step version of PRC-77 (normally 50 kHz steps)
  • 20K0F3E - Regular 5 kHz deviation "wideband" FM voice - used for land mobile systems below 150 MHz, including VHF low band 25-50 MHz
  • 20K0F3E - FM voice - VHF/UHF ham radio|amateur radio standard FM used 29 MHz and up - 25 kHz bandwidth
  • 20K0F3D - DMTF and other tone-based signalling systems - 5 kHz deviation
  • 20K0F9W - Combined analog FM voice, GPS data and ANI information (used by American Red Cross 47.42 MHz blanket system)
  • 20K0F7W - see 20K0F9W above, used by the ARC on 47.42 MHz and other VHF low band frequencies (eg. 47.5 MHz, 47.54 MHz, etc.)
  • 18K0F3E - FM voice - 4.5 kHz FM deviation (similar to 16K0F3E 4 kHz FM deviation and 20K0F3E 5 kHz FM deviation) - cf. HTX-202 and HTX-404
  • 16K0F3E - military FM 30-88 MHz Datron HH7700, PRC1077 PRC-1077, PRC1060 PRC1080 25 kHz bandwidth mode - "wide band FM" 25 kHz channel spacing
  • 16K0F3E - 4 kHz deviation FM analog voice - used on the 800/900 MHz bands, VHF marine, VHF/UHF ham radio - 20K “middle band” on many land mobile radios
  • 16K0F3E - 25 kHz "25K" wide FM channel spacing +/- 5kHz deviation FM voice (per Alinco land mobile literature)
  • 16K0G3E - 4 kHz deviation PM analog phase modulation voice (considered identical to FM or 16K0F3E emission - VHF marine band radios)
  • 15K8F3E - MURS mobile radio (154.57 MHz and 154.6 MHz only) FM voice, considered functionally the same as 20K0F3E or 16K0F3E
  • 15K6F3E - 25 kHz channel 25K wideband FM mode (20K or 25K mode) TYT TH-9000D in 25K bandwidth mode - listed as 16K0F3E
  • 15K5F3E - GMRS mobile radio FM voice, considered functionally the same as 20K0F3E or 16K0F3E
  • 14K1F3E - Baofeng and other Chinese handheld and mobile radios "middle band" or "20K" bandwidth
  • 14K0F3E - 3.5 kHz deviation FM voice, used on some FM CB equipment (see also: 10K0F3E, 11K0F3E, 12K5F3E, etc.)
  • 14K0F3E - 20 kHz "20K" medium FM channel spacing +/- 4kHz deviation FM voice (per Alinco land mobile literature)
  • 13K6F3E - 900 MHz SMR analog FM voice (Motorola Type II, etc.) 13.6 kHz bandwidth
  • 12K5F3E - ITU designation for narrow band FM 12.5 kHz channel, 3.125 kHz deviation
  • 12K0F3E - 3 kHz deviation, narrow FM voice - cf. HH7700, PRC1077, PRC1060, PRC1080 and other more modern military FM tactical radios
  • 11K3F3E - 2.5 kHz deviation FM "narrowband 12.5 kHz" analog voice, 11.25 kHz occupied bandwidth
  • 11K2F3E - Considered the same as 11K3F3E by the FCC
  • 11K3F3D - DTMF and other tone-based signalling systems - 2.5 kHz deviation narrow band
  • 11K2F3D - DTMF and other tone-based signalling systems - 2.5 kHz deviation narrow band
  • 11K0F3E - military FM 30-88 MHz Datron HH7700 12.5 kHz bandwidth mode - "narrow band FM" 12.5 kHz channel spacing
  • 11K0F3E - 12.5 kHz "12K" or 12.5K narrow FM channel spacing +/- 2.5kHz deviation FM voice (per Alinco land mobile literature)
  • 11K0F3E - Considered the same as 11K3F3E by the FCC - 12K narrow band on many land mobile radios, GMRS, FRS, MURS, etc.
  • 11K0F3D - DTMF and other tone-based signalling systems - 2.5 kHz deviation narrow band
  • 11K3F3D - Audio frequency shift keying within a narrowband 12.5 kHz bandwidth channel FFSK, AFSK, FSK
  • 10K7F3E - Narrowband FM mode used by numerous FCC-approved Part 90/Part 95 handheld radios, 10.7 kHz bandwidth
  • 10K6F3E - Portable GMRS walkie talkies (Baofeng) based on the UV-82 and UV-5R radios - 10.59 kHz bandwidth, called 11K0F3E by manufacturer
  • 10K5F3E - Narrowband FM mode used by numerous FCC-approved Part 90/Part 95 handheld radios, 10.5 kHz bandwidth
  • 10K4F3E - Narrow 12K mode (12.5 kHz mode) Midland 40 watt GMRS mobile, TYT TH-9000D in 12K bandwidth mode - listed as 11K0F3E
  • 10K4F3E - Midland MXT400 emission on GMRS and FRS frequencies - modified version of TYT TH-9000D UHF mobile transceiver
  • 10K4F3E - Narrowband FM mode used by numerous FCC-approved Part 90/Part 95 handheld radios, 10.4 kHz bandwidth
  • 10K2F3E - Narrowband FM mode used by numerous FCC-approved Part 90/Part 95 handheld radios, 10.2 kHz bandwidth
  • 10K0F3E - 10 kHz bandwidth FM - used on many European-spec FM CB radios, also export CB/11 meter equipment sold in USA FM mode
  • 10K0A3E - AM voice, double side band with carrier (10 kHz bandwidth) - wide band AM 5 kHz sidebands
  • 9K90F3E - Narrow FM voice, 9.9 kHz bandwidth - FRS wireless FM intercom systems
  • 9K80F3E - Narrow FM voice, 9.8 kHz bandwidth - FRS wireless FM intercom systems
  • 9K84F3E - Narrow FM NFM 9.84 kHz bandwidth 9.9 kHz bandwidth - Motorola FRS walkie talkies
  • 9K64F3E - Narrow FM, FRS walkie talkies
  • 9K50A3E - AM voice, double side band with carrier (9.5 kHz bandwidth)
  • 9K20F3E - Baofeng (and other Chinese radios) narrow FM mode
  • 9K10F3E - Baofeng (and other Chinese radios) narrow FM mode
  • 8K50F3E - Narrow FM voice, FRS radios, 6 channel 7 channel 10 channel 20 channel wireless intercoms (using FRS frequencies)
  • 8K50F3E - Narrow mode on Alinco VHF and UHF FM transceivers
  • 8K00A3E - AM voice, double side band AM with carrier (8 kHz bandwidth) - maximum AM mode bandwidth permitted on MURS
  • 8K00F3E - Narrow FM voice, 8 kHz bandwidth, wireless FRS intercoms and other two-way radios
  • 6K00F3E - Super narrow FM voice, 6.25 kHz channel 6 kHz bandwidth
  • 6K00A3E - AM voice, double side band with carrier (6 kHz bandwidth) - used for CB and VHF aircraft band airband
  • 5K80A3E - AM voice, double side band with carrier, modern 27 MHz AM CB gear per FCC authorization paperwork
  • 5K75A3E - AM voice, double side band with carrier (5.75 kHz bandwidth) - narrow AM, modern AM CB equipment
  • 5K68F3E - Super narrow FM voice, 5.68 kHz bandwidth - Motorola FRS walkie talkies
  • 5K58A3E - AM voice, indicated emission on Cobra mobile CB radio Cobra Mini 19 mobile CB radio AM CB
  • 5K20F3E - Super narrow FM voice, 5.2 kHz bandwidth - Motorola FRS walkie talkies
  • 5K20F3E - Narrow FM Baofeng radios, Pofung, etc. UV-5R UV-5RA UV-5RE UV-6R UV-82 UV-82C UV-82HP BF-F8HP (super-narrow FM)
  • 4K50A3E - AM voice, double side band with carrier - narrow AM for 8.33 kHz airband channel step
  • 4K00F3E - Super narrow FM voice, used with NXDN or NEXEDGE systems
  • 4K00F3D - Super narrow FM - used for CW ID callsign license ID on NXDN, NEXEDGE and IDAS systems (narrowband)
  • 4K00J3E - SSB AC-SSB Amplitude Compandored Sideband (pilot tone/carrier) voice (4 kHz)
  • 4K00J3E - ESSB enhanced SSB (can be wider than 4 kHz)
  • 3K00J3E - SSB single sideband voice (USB or LSB) - 3 kHz bandwidth SSB voice
  • 2K80J3E - SSB single sideband voice (USB or LSB) - 2.8 kHz bandwidth SSB voice


  • Digital modes, including frequency shift keying (FSK) and audio frequency shift keying (AFSK)
  • 33M1D1D - 802.11a/b/g/n WiFi
  • 22M0G1D - 802.11a/b/g/n WiFi
  • 16M0D1D - 802.11a/b/g/n WiFi
  • 1M25F9W - CDMA cellular (voice and data)
  • 40K0F1D - military FM 10 kHz secure voice X-MODE AN/VRC-12, AN/PRC-77 "WIDEBAND" mode for "X-mode" (see 36K0F3E and 40K0F3E)
  • 36K0F1D - military FM 8 kHz secure voice X-MODE AN/VRC-12, AN/PRC-77 "WIDEBAND" mode for "X-mode" (see 36K0F3E and 40K0F3E)
  • 30K0DXW - TDMA cellular (voice and data)
  • 25K0F2D - Wideband "FM" paging systems 26/27 MHz and 40 MHz bands - UK and European wideband on-site pagers
  • 22K0D1E - TETRA digital voice
  • 22K0D1D - TETRA data
  • 22K0D1W - TETRA voice and data
  • 22K0D7W - TETRA voice and data
  • 22K0D7E - TETRA digital voice
  • 22K0D7D - TETRA data
  • 22K0DXW - TETRA voice and data
  • 21K0D1W - TETRA voice and data
  • 20K1D1D - TETRA PowerTrunk data
  • 20K0D1E - TETRA PowerTrunk digital voice
  • 20K0D1W - TETRA PowerTrunk digital voice and data
  • 20K0D7W - TETRA voice and data combined - reduced power TETRA
  • 20K0D7E - TETRA digital voice - reduced power TETRA
  • 20K0D7D - TETRA data - reduced power TETRA
  • 20K0D7W - TETRA voice and data combined - reduced power TETRA
  • 20K0F3D - FM tone-based systems (DMTF, siren activation, station alerting, etc.)
  • 20K0F1D - 25 kHz bandwidth GMSK 19.2
  • 20K0F1D - FM paging - POCSAG systems, 25 kHz bandwidth (no voice)
  • 20K0F1D - FSK data, regular 5 kHz deviation - used for 72 MHz wireless clock systems, callboxes and other operational fixed purposes
  • 20K0F1D - Teledesign Systems Radio Modem (MURS channels 154.570 MHz and 154.600 MHz only)
  • 20K0F1D - wireless control and telemetry systems operating on the 154 MHz MURS channels 154.57 MHz or 154.6 MHz
  • 20K0F1D - 19.2 kbps data on wideband channel RD-LAP
  • 20K0F2D - general use for packet data - on amateur radio VHF/UHF bands for example
  • 20K0F1E - Encrypted Voice - Motorola DVP, DES, DES-XL, SECURENET - not P25
  • 20K0F2D - Audio frequency shift keying within a wideband 20 kHz / 25 kHz bandwidth channel FFSK, AFSK, FSK
  • 20K0G3D - PSK - phase shift keying, 20 kHz bandwidth remote control RC radio control systems, various VHF/UHF bands
  • 19K6F1D - FFSK - GMSK data link radios, including Maxon VHF 136-174 MHz and UHF 450-490 MHz data radios telemetry radios
  • 19K0F2D - FSK data, digital link, data, telemetry, telecommand (noted on public safety licenses)
  • 19K0F1D - FSK data, digital link, data, telemetry, telecommand (noted on public safety licenses)
  • 19K0D1W - P25 Project 25 2-slot TDMA P25 Phase II true TDMA, appearing on Phase II P25 licenses
  • 17K7D7D - Motorola Astro 25 data - Motorola High Performance data Air Interface - wideband 25 kHz channel
  • 16K8F1E - Encrypted Voice - Motorola DVP, DES, DES-XL, SECURENET - not P25
  • 16K0F1D - Motorola Type II trunking system 3600 baud control channel
  • 16K0F1D - FSK telemetry, telecommand and data links (used on various VHF/UHF bands, including RC services in Europe
  • 16K0G2D - AIS on VHF marine band 161.975 MHz and 162.025 MHz
  • 14K4F1D - 25 kHz bandwidth GMSK 9.6
  • 14K0F1D - Motorola Type II trunking system 3600 baud control channel
  • 13K1F9W - OpenSky digital voice / data 4-slot - SMR
  • 12K1F9W - OpenSky digital voice / data 4-slot - NPSPAC
  • 11K3F2D - Data links on VHF/UHF land mobile bands, including IFLOWS fixed point to point hydrologic data systems and MURS
  • 11K3F1D - FM paging - POCSAG systems, 11.25 kHz bandwidth (no voice)
  • 11K3F1E - Encrypted Voice - Motorola DVP, DES, DES-XL, SECURENET - not P25
  • 11K3F7W - Mixed analog/digital use, technically incorrect per FCC rules, but widely found on licenses
  • 11K2F7W - Mixed analog/digital use, technically incorrect per FCC rules, but widely found on licenses
  • 11K2F7W - Yaesu System Fusion C4FM digital voice DV YSF C4FM DV 4FSK modified P25 vocoder
  • 11K2F1D - Teledesign Radio Modem (146-174 MHz Part 90, also MURS frequencies 151.820 MHz, 151.880 MHz and 151.940 MHz)
  • 11K2F2B - Data link, telemetry, datalink and other data modes emission on MURS frequencies 151.820, 151.880 and 151.940 MHz
  • 11K0F7W - Mixed analog/digital use, technically incorrect per FCC rules, but widely found on licenses
  • 11K0F2D - Data links on VHF/UHF land mobile bands, including IFLOWS fixed point to point hydrologic data systems
  • 10K4F2D - SCADA link telemetry radios (narrowband radio links) 146-174 MHz, 154-174 MHz, 406-470 MHz (CW ID 10K4F3E)
  • 10K0F1D - GPS RTK data links
  • 10K0F1D - 9.6 kbps data on narrowband channel RD-LAP
  • 10K0F1D - Automatic Vehicle Location AVL systems, radio modems - 10 kHz bandwidth FSK
  • 10K0F1D - FSK remote control FM RC systems, 10 kHz bandwidth
  • 9K80D7W - P25 Project 25 2-slot TDMA P25 Phase II
  • 9K80F1D - P25 Project 25 2-slot TDMA P25 Phase II data
  • 9K80F1E - P25 Project 25 2-slot TDMA P25 Phase II voice
  • 9K70F1D - P25 Project 25 WCQPSK Data - Used for simulcast systems
  • 9K70F1E - P25 Project 25 WCQPSK Voice - Used for simulcast systems
  • 9K36F7W - Yaesu System Fusion YSF combined C4FM (Voice Wide * Voice Narrow + Data * Data Wide)
  • 9K30F1D - SCADA, data links, telecommand and remote control (fits in 12.5 kHz narrow band channel)
  • 9K20F3D - DTMF selective calling, ANI - automatic number identification, including end of transmission DTMF bursts
  • 9K20F2D - Paging and system alerting (including fire station systems, Zetron)
  • 9K10F3D - DTMF selective calling, ANI - automatic number identification, including end of transmission DTMF bursts
  • 8K90F1D - GPS RTK data links
  • 8K84F1D - MURS VHF dog collar GPS transmitters - FSK F1D data mode
  • 8K80F1D - MURS VHF dog collar GPS transmitters dog training wireless FSK F1D emission
  • 8K50F2D - Packet radio - narrow band mode per Alinco amateur radio documentation (8K50F3E data mode)
  • 8K50F2D - Audio frequency shift data, FSK (FM) telemetry, telecommand, including remote control uses in Europe
  • 8K50F1D - Frequency shift data, FSK (FM) telemetry, telecommand
  • 8K50A1D - 8 kHz AFSK - AM remote control 8.5 kHz bandwidth
  • 8K50A2D - 8 kHz AFSK with modulating sub-carrier - remote control
  • 8K30F1D - NDXN, IDAS or NEXEDGE Wideband 12.5 kHz - Data
  • 8K30F1E - NDXN, IDAS or NEXEDGE Wideband 12.5 kHz - Digital voice
  • 8K30F7W - NXDN, IDAS or NEXEDGE Wideband 12.5 kHz - Digital voice + data combined
  • 8K30F1W - P25 Project 25 Voice and data Phase I C4FM voice and data
  • 8K10F1E - P25 Project 25 Voice - P25 Phase I C4FM voice
  • 8K10F1D - P25 Project 25 Data - P25 Phase I C4FM voice
  • 8K10F1W - P25 Project 25 Voice and data - P25 Phase II H-CPM
  • 8K10FXE - P25 Project 25 Voice - P25 Phase I C4FM voice
  • 8K10FXD - P25 Project 25 Data - P25 Phase I C4FM voice
  • 8K00G1D - BPSK data
  • 8K00F1D - High power 27 MHz data links - 27.255 MHz, see HF pagers and remote control pages
  • 8K00F1D - 8 kHz FSK - remote control (per FCC rules under Part 95 RCRS, 26-28 MHz band, 72 MHz band, 75 MHz band)
  • 8K00F2D - 8 kHz FSK with modulating sub-carrier - remote control
  • 8K00A1D - 8 kHz AFSK - AM remote control, 26-28 MHz band, 72-76 MHz band, 49 MHz band/27 MHz band
  • 8K00A2D - 8 kHz AFSK with modulating sub-carrier - remote control
  • 8K00N0N - 8 kHz OOK on off keying remote control
  • 7K64F1D - Wireless dog training remote transmitter (510mW output) 27.195 MHz
  • 7K60FXE - DMR digital voice - TDMA 2-slot DMR MotoTRBO digital voice
  • 7K60FXD - DMR data - TDMA 2-slot DMR MotoTRBO data
  • 7K60FXW - DMR digital voice + data - TDMA - 2-slot DMR MotoTRBO combined voice and data
  • 7K60F7W - DMR digital voice + data - TDMA - 2-slot DMR MotoTRBO combined voice and data
  • 7K60F1W - DMR digital voice + data - TDMA - 2-slot DMR MotoTRBO combined voice and data
  • 7K60F1E - DMR digital voice - TDMA 2-slot DMR MotoTRBO digital voice
  • 7K60F1D - DMR data - TDMA 2-slot DMR MotoTRBO data
  • 7K00F1D - GPS data link for radio collars / GPS collars (MURS frequencies 151.82 MHz, 151.88 MHz, 151.94 MHz, 154.57 MHz and 154.6 MHz)
  • 6K50F1D - SCADA, data links, carrier FSK 6.5 kHz bandwidth
  • 6K50A2D - AM mode amplitude frequency shift keying (audio frequency shift using AM modulation) - 6.5 kHz bandwidth, used for R/C links
  • 6K50A1D - AM mode telemetry - including amplitude shift keying (ASK)
  • 6K00F7W - Mixed analog/digital use, technically incorrect per FCC rules, but widely found on licenses 6.0 kHz bandwidth
  • 6K00F7W - Icom D-STAR digital voice D-STAR DV amateur radio ham radio digital voice GMSK modulation AMBE vocoder with FEC
  • 6K00F1D - SCADA, data links, carrier FSK, telecommand (R/C, remote control and radio control systems 25 MHz and above)
  • 6K00F2D - SCADA, data links, regular audio FSK AFSK 6 kHz bandwidth
  • 6K00F2D - Frequency modulated digital data (FSK) without modulating sub-carrier (6 kHz bandwidth)
  • 6K00F3D - SCADA, data links, various-tone based systems, DTMF, alerting systems, etc. - 6 kHz bandwidth
  • 6K00A2D - Amplitude shift keying (AM) R/C systems - including those operating in the 26-28 MHz band
  • 5K76G1E - P25 Voice - CQPSK voice, used for simulcast Project 25 systems
  • 5K60F2D - 5.6 kHz bandwidth FSK, operational fixed usage, SCADA, remote control
  • 4K00F1D - NDXN, IDAS or NEXEDGE Narrowband 6.25 kHz - Data
  • 4K00F1E - NDXN, IDAS or NEXEDGE Narrowband 6.25 kHz - Digital voice
  • 4K00F1W - NXDN, IDAS or NEXEDGE Narrowband 6.25 kHz - Digital voice + data combined
  • 3K30F1D - 3.3 kHz bandwidth SCADA datalink telecommand, i.e. 151 MHz, 154 MHz or 173 MHz narrowband systems (6.25 kHz or 3.125 kHz steps)
  • 3K00H2B - ALE MIL-STD-188-141A and FED-STD-1045 - MF and HF systems, 2-30 MHz
  • 3K00J2D - Narrowband amplitude shift keying (used for specialty datalink systems)
  • 3K00N0N - 3 kHz OOK on off keying remote control
  • 2K80J2D - PACTOR-III
  • 2K80J2B - RTTY or RATT - radioteletype
  • 2K50J2D - ROS datamode, similar FSK/AFSK modes such as WSPR, OLIVIA, JT65, etc.
  • 2K00J2D - MT63-2000 (200wpm) 2000 Hz bandwidth 2 kHz bandwidth
  • 1K00J2D - MT63-1000 (100wpm) 1000 Hz bandwidth 1 kHz bandwidth
  • 100HN0N - True CW continuous wave Morse code on off keying 100Hz 0.1 kHz bandwidth



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