HF pagers
From HFUnderground
List of known pager paging data link data systems using digital modes remote control radio control in the 26-28 MHz CB or 11-meter frequency range.
See also the Remote Control FCC Part 95 Class C Page - Remote Control Radio Service (RCRS), FCC Rules Part 95, Personal Radio Services, Subpart C—Radio Control Radio Service 95.701-95.899, previously 95.201-95.225
Frequency List
Note: This list is a dynamic list and will never be complete. Many of these systems - especially the paging systems and telemetry or data link systems, act as de facto 11 meter beacons and de facto high frequency beacons. Included FSK data signals and pager signals - 25 to 30 MHz, included 29.7 MHz to 30 MHz portion above the 10 meter ham radio allocation 28 to 29.7 MHz but below the official beginning of VHF at 30.000 MHz
| Frequency | Remarks |
|---|---|
| 26.100 MHz | Hospital pagers - Europe - FM voice and POCSAG |
| 26.150 MHz | Hospital pagers - Europe - FM voice and POCSAG |
| 26.200 MHz | Hospital pagers (Holland) FM mode |
| 26.200 MHz | On site paging systems - UK |
| 26.220 MHz | UK Paging on-site pager (offset frequency) |
| 26.225 MHz | Begin European standardized 26 MHz paging band (to 26.935 MHz) with some exceptions |
| 26.225 MHz | UK Paging on-site pager (offset frequency) |
| 26.237 MHz | UK Paging on-site, non-hospital use (offset frequency, 26.2375 MHz, 26.238 MHz) |
| 26.250 MHz | UK Paging on-site pager - confirmed active January 2024 |
| 26.250 MHz | Hospital pagers (Holland) FM mode |
| 26.300 MHz | UK Paging on-site pager |
| 26.300 MHz | Hospital pagers (Holland) FM mode - confirmed active January 2024 |
| 26.350 MHz | UK Paging on-site pager |
| 26.350 MHz | Hospital pagers (Holland) FM mode - confirmed active January 2024 |
| 26.375 MHz | Asian paging frequency, unknown source, possibly India (FM voice) |
| 26.400 MHz | Hospital pagers (Holland) FM mode |
| 26.410 MHz | UK Paging on-site, non-hospital use |
| 26.435 MHz | UK Paging on-site, non-hospital use (offset frequency, 26.436 MHz) |
| 26.437 MHz | UK Paging on-site, non-hospital use (offset frequency, 26.4375 MHz, 26.438 MHz) |
| 26.450 MHz | Hospital pagers (Holland) FM mode |
| 26.460 MHz | UK Paging on-site, non-hospital use (offset frequency) |
| 26.462 MHz | UK Paging on-site, non-hospital use (offset frequency, 26.4625 MHz, 26.463 MHz) |
| 26.475 MHz | Asian paging frequency, unknown source, possibly India (FM voice) |
| 26.500 MHz | Paging, heard in Europe, noted use in Holland - FM mode - confirmed active January 2024 |
| 26.545 MHz | UK Paging on-site, non-hospital use |
| 26.550 MHz | POCSAG pager - Europe and UK |
| 26.555 MHz | POCSAG pager - Europe |
| 26.575 MHz | Asian paging frequency, unknown source, possibly India (FM voice) |
| 26.580 MHz | UK Paging on-site, non-hospital use |
| 26.590 MHz | UK Paging on-site, non-hospital use (offset frequency, 26.5875 MHz, 26.588 MHz) |
| 26.600 MHz | Paging, heard in Europe, allocated in Holland (see 26.5 MHz above) |
| 26.605 MHz | Pager, unknown origin, heard on European SDRs during band openings, possible offset for 26.6 MHz |
| 26.605 MHz | POCSAG Pager - UK and Western Europe |
| 26.615 MHz | UK Paging on-site, non-hospital use, heard on European SDRs during band openings |
| 26.625 MHz | Asian paging frequency, unknown source, possibly India (FM voice) |
| 26.630 MHz | POCSAG paging signals, unknown source |
| 26.635 MHz | POCSAG pager system, unknown origin |
| 26.635 MHz | On-site paging - French allocation (France 26 MHz pager) |
| 26.650 MHz | Hospital pagers - Europe and UK |
| 26.665 MHz | Hospital pagers (Holland) FM mode, offset 26.6625 MHz |
| 26.670 MHz | UK Paging on-site, non-hospital use |
| 26.670 MHz | US Navy Naval Research Laboratory NRL Research radio buoys radiobuoys 500mw 0.5 watt FSK data telemetry system |
| 26.675 MHz | Designated FM (ROS, PSK31, etc) data channel in Germany [German CB channel 52] |
| 26.685 MHz | Designated FM (ROS, PSK31, etc) data channel in Germany [German CB channel 53] |
| 26.695 MHz | On-site paging - French allocation (France 26 MHz pager) |
| 26.695 MHz | Offset frequency for 26.700 MHz, heard in Western Europe and UK |
| 26.700 MHz | European on-site paging systems |
| 26.700 MHz | Hospital pagers (Holland) FM mode |
| 26.703 MHz | Offset frequency for 26.7025 MHz, heard in Western Europe and UK |
| 26.705 MHz | Offset frequency for 26.700 MHz, heard in Western Europe and UK |
| 26.707 MHz | UK Paging, often slightly offset (26.7065 MHz, etc.) |
| 26.710 MHz | UK Paging, often slightly offset (26.709 MHz, etc.) |
| 26.713 MHz | UK Paging, offset 26.7125 MHz |
| 26.715 MHz | UK Paging on-site pager |
| 26.720 MHz | Data link and telemetry systems, Latin America |
| 26.725 MHz | UK Paging on-site pager |
| 26.735 MHz | Pager, unknown origin, possibly Eastern Europe and/or Russia |
| 26.735 MHz | European paging systems, possibly also used in UK |
| 26.739 MHz | FSK data links (narrowband bursts) - dial frequency 26.737 MHz USB or 26.740 MHz LSB |
| 26.740 MHz | Data link and telemetry systems, Latin America |
| 26.745 MHz | UK Paging on-site pager |
| 26.745 MHz | On-site paging - French allocation (France 26 MHz pager) |
| 26.745 MHz | Hospital pagers (Holland) FM mode offset frequency from 26.75 MHz |
| 26.750 MHz | UK Paging on-site pager |
| 26.750 MHz | Hospital pagers (Holland) FM mode |
| 26.750 MHz | Hospital pagers Europe - POCSAG - confirmed active January 2024 |
| 26.751 MHz | Pager - offset frequency 26.7505 or 26.751 MHz - Western Europe |
| 26.755 MHz | UK Paging on-site pager, monitored in Finland and elsewhere in Europe |
| 26.785 MHz | UK Paging on-site pager |
| 26.800 MHz | Hospital pagers (Holland) FM mode |
| 26.815 MHz | UK Paging on-site pager, offset 26.810 MHz or 26.8125 MHz |
| 26.815 MHz | France - low power RC radio control data frequency |
| 26.825 MHz | France - low power RC radio control data frequency |
| 26.835 MHz | UK Paging on-site Radio Paging Hire frequency - maximum ERP 2 watts 26.8350 MHz |
| 26.835 MHz | POCSAG pager - unknown origin pager (heard sporadically in UK, heard often in Russia) |
| 26.835 MHz | France - low power RC radio control data frequency |
| 26.845 MHz | France - low power RC radio control data frequency |
| 26.850 MHz | Voice pager - unknown origin - likely Europe - FM mode |
| 26.850 MHz | Hospital pagers - Europe European POCSAG paging FSK |
| 26.855 MHz | France - low power RC radio control data frequency |
| 26.855 MHz | Hospital pagers - Europe European POCSAG paging pagers FSK |
| 26.859 MHz | FSK data links (narrowband bursts) - dial frequency 26.857 MHz USB or 26.860 MHz LSB |
| 26.865 MHz | UK Paging on-site pager |
| 26.865 MHz | France - low power RC radio control data frequency |
| 26.875 MHz | France - low power RC radio control data frequency |
| 26.885 MHz | France - low power RC radio control data frequency |
| 26.885 MHz | POCSAG pager - Europe |
| 26.890 MHz | POCSAG pager logged in Europe during band openings, unknown origin |
| 26.895 MHz | France - low power RC radio control data frequency |
| 26.900 MHz | POCSAG pager - unknown origin (heard daily in UK, very strong signals) |
| 26.900 MHz | Hospital pagers (Holland) FM mode |
| 26.905 MHz | France - low power RC radio control data frequency |
| 26.915 MHz | France - low power RC radio control data frequency |
| 26.915 MHz | Designated FM (ROS, PSK31, etc) data channel in Germany [German CB channel 76] |
| 26.920 MHz | UK Paging on-site Radio Paging Hire frequency - maximum ERP 2 watts 26.9200 MHz |
| 26.925 MHz | Designated FM (ROS, PSK31, etc) data channel in Germany [German CB channel 77] |
| 26.925 MHz | Data link system, heard in UK during band opening to Eastern Europe, CIS and/or Russia |
| 26.935 MHz | Data link or telemetry system, unknown origin or source, possibly Middle East - FM mode |
| 26.935 MHz | POCSAG pager - Europe |
| 26.935 MHz | End European harmonized 26MHz pager band (26.225-26.935 MHz with some exceptions) |
| 26.940 MHz | POCSAG pager (other modes heard) - heard daily in Russia - Russian 26 MHz paging system |
| 26.945 MHz | ITU RCC SRD alarms frequency 2 watt ERP 11 kHz bandwidth (26.939 MHz - 26.951 MHz SRD allocation) |
| 26.945 MHz | Russia - State Committee for Radio Frequencies (Protocol No. 170 of 12/30/88) - 2 watt alarm data links - FSK |
| 26.950 MHz | Local pager, heard in mainland Europe, transmits "idle" signal even when no pages are being sent |
| 26.950 MHz | Hospital pagers (Holland) FM mode |
| 26.950 MHz | Hospital pagers on-site paging systems Europe - confirmed active January 2024 |
| 26.950 MHz | Fixed allocation - often used for point-to-point links outside USA |
| 26.950 MHz | POCSAG pager (other modes heard) - heard daily in Russia - Russian 26 MHz paging system |
| 26.955 MHz | Paging heard on several Russian SDRs, possible alternate to 26.945 MHz, 26.95 MHz and 26.96 MHz frequencies |
| 26.955 MHz | European standardized R/C and telemetry |
| 26.955 MHz | Fixed allocation - often used for point-to-point links outside USA (26950 kHz 26960 kHz allocation "international fixed") |
| 26.960 MHz | ITU RCC SRD alarms frequency 2 watt ERP 11 kHz bandwidth (26.954 MHz - 26.966 MHz MHz SRD allocation) |
| 26.960 MHz | Local pager, heard in mainland Europe, POCSAG paging 26MHz |
| 26.960 MHz | European standardized R/C and telemetry |
| 26.960 MHz | Russia - State Committee for Radio Frequencies (Protocol No. 170 of 12/30/88) - 2 watt alarm data links - FSK |
| 26.975 MHz | UK data frequency, UK low-power R/C "Black" telemetry (100 mw limit) |
| 26.978 MHz | New Zealand channel RP1A on-site paging POCSAG |
| 26.995 MHz | Data link, paging systems and pagers, worldwide - also used for R/C purposes "Channel 3A" |
| 26.995 MHz | Radio Control RC Service Part 95 4 watt power limit in USA |
| 26.995 MHz | Linear Controls "Xtended Range Wireless" telemetry/control system, 4 watts FSK mode (Canada version) |
| 26.995 MHz | Migro Wireless Industrial wireless monitoring and control systems 27MHz - 4 watt FM FSK data link networks |
| 26.995 MHz | Remote Control Technology RTC model 971218 wireless 6-channel long range control system 2 watt transmitter |
| 26.995 MHz | Remote Control Technology 2 watt PDTFM FSK 2-mile wireless control and telemetry systems (2 discrete inputs/outputs) |
| 26.995 MHz | Remote Control Technology Long Range Wireless Switch System LRWSS model # 01217 4 watt PTDFM FSK (FM) 27MHz transmitter |
| 26.995 MHz | Remote Control Technology Medium Range Wireless Switch System MRWSS model # 01214 2 watt FSK (FM) 27MHz transmitter |
| 26.995 MHz | Australian 27 MHz R/C Channel 1 |
| 26.995 MHz | UK data frequency, UK low-power R/C "Brown" telemetry (100 mw limit) |
| 26.995 MHz | European standardized Short-Range Device (SRD) 100mw (10 kHz bandwidth or less) (26.990 MHz - 27.000 MHz) "A1" |
| 27.000 MHz | Russian data link or telemetry system, 10-12 kHz, MFSK |
| 27.000 MHz | POCSAG Pager heard in UK and Europe - unknown source |
| 27.003 MHz | New Zealand channel RP2A on-site paging POCSAG |
| 27.007 MHz | POCSAG paging signal, heard in Finland (unknown source), possibly offset 27.005 MHz or 27.0075 MHz |
| 27.015 MHz | Noted use for low-power on site paging in Ireland |
| 27.020 MHz | New Zealand R/C Channel 102 (100mw maximum power) |
| 27.020 MHz | POGSAG Pager FM - Russian origin - Russia paging frequency |
| 27.025 MHz | UK data frequency, UK low-power R/C "Brown-Red" telemetry (100 mw limit) |
| 27.028 MHz | New Zealand channel RP3A on-site paging POCSAG |
| 27.045 MHz | Data link, paging systems and pagers, worldwide - also used for R/C purposes "Channel 7A" |
| 27.045 MHz | Radio Control RC Service Part 95 4 watt power limit in USA |
| 27.045 MHz | Australian 27 MHz R/C Channel 2 |
| 27.045 MHz | UK data frequency, UK low-power R/C "Red" telemetry (100 mw limit) |
| 27.045 MHz | European standardized Short-Range Device (SRD) 100mw (10 kHz bandwidth or less) (27.040 MHz - 27.050 MHz) "A2" |
| 27.048 MHz | Japanese On-Site Paging and R/C (interleaved with CB and 1W DSB Fishery Radio) |
| 27.050 MHz | POCSAG Pager heard in UK and Europe - unknown source |
| 27.053 MHz | New Zealand channel RP4A on-site paging POCSAG |
| 27.064 MHz | Voice pager - unknown origin - likely Europe - FM mode, possibly offset from 27.065 MHz |
| 27.069 MHz | FSK data links (narrowband bursts) - dial frequency 27.067 MHz USB or 27.070 MHz LSB |
| 27.070 MHz | New Zealand R/C Channel 107 (100mw maximum power) |
| 27.070 MHz | POGSAG Pager FM - Russian origin - 27 MHz Russian paging system frequency |
| 27.075 MHz | Hospital pagers (Holland) FM mode |
| 27.075 MHz | UK data frequency, UK low-power R/C "Red-Orange" telemetry (100 mw limit) |
| 27.078 MHz | New Zealand channel RP5A on-site paging POCSAG |
| 27.080 MHz | On site paging systems on premises pagers - Russia |
| 27.080 MHz | Data links, Eastern Europe, Russia |
| 27.090 MHz | Russian pagers, heard on Russian and Eastern European SDRs |
| 27.090 MHz | European standardized Eurobalise train telemetry system 27,090-27,100 MHz (27,095 MHz center frequency, system 27.09 MHz-27.1 MHz) |
| 27.095 MHz | Data link, paging systems and pagers, worldwide - also used for R/C purposes "Channel 11A" |
| 27.095 MHz | Radio Control RC Service Part 95 4 watt power limit in USA |
| 27.095 MHz | LEMOS Radiometrix NTX0-27.095-5-10MW - 10mw 10 kHz/12.5 kHz channel NBFM telemetry datalink transmitter 27.095 MHz |
| 27.095 MHz | LEMOS Radiometrix NTX0-27.095-5-100MW - 100mw 10 kHz/12.5 kHz channel NBFM telemetry datalink transmitter 27.095 MHz |
| 27.095 MHz | Australian 27 MHz R/C Channel 3 |
| 27.095 MHz | UK data frequency, UK low-power R/C "Orange" telemetry (100 mw limit) |
| 27.095 MHz | European standardized Short-Range Device (SRD) 100mw (10 kHz bandwidth or less) (27.090 MHz - 27.100 MHz) "A3" |
| 27.095 MHz | European standardized Eurobalise train telemetry system 27,095 MHz +/- 500 kHz 26.695 MHz - 27.595 MHz |
| 27.100 MHz | European standardized Eurobalise train telemetry system 27,090-27,100 MHz (27,095 MHz center frequency, system 27.09 MHz-27.1 MHz) |
| 27.100 MHz | FSK data links (narrowband bursts) - dial frequency 27.097 MHz USB or 27.103 MHz LSB |
| 27.100 MHz | POCSAG Pager heard in UK and Europe - unknown source |
| 27.103 MHz | New Zealand channel RP6A on-site paging POCSAG |
| 27.120 MHz | Part 15 Beacon frequency (second harmonic of 22 meters 13.56 MHz x2 - 27.12 MHz) |
| 27.120 MHz | New Zealand R/C Channel 112 (100mw maximum power) |
| 27.120 MHz | POCSAG Pager Signals heard in UK - unknown origin |
| 27.125 MHz | UK data frequency, UK low-power R/C "Orange-Yellow" telemetry (100 mw limit) |
| 27.125 MHz | Part 15 Beacon frequency (second harmonic 13 MHz ISM band 27.106 MHz - 27.134 MHz / 27106 kHz - 27134 kHz) |
| 27.129 MHz | FSK data links (narrowband bursts) |
| 27.136 MHz | Japanese On-Site Paging and R/C |
| 27.137 MHz | New Zealand channel RP7A on-site paging POCSAG (offset frequency, 27.1375 MHz, 27.138 MHz) |
| 27.140 MHz | Russian pagers, heard on Russian and Eastern European SDRs |
| 27.141 MHz | FSK data links (narrowband bursts) - dial frequency 27.138 MHz USB or 27.144 MHz LSB |
| 27.143 MHz | FSK data links (narrowband bursts) - dial frequency 27.140 MHz USB or 27.146 MHz LSB |
| 27.145 MHz | Data link, paging systems and pagers, worldwide - also used for R/C purposes "Channel 15A" |
| 27.145 MHz | Radio Control RC Service Part 95 4 watt power limit in USA |
| 27.145 MHz | THOR GUARD Voice of Thor - VOT - 27.255 MHz one-to-many alarm control system (strobe or siren) - 44 output version |
| 27.145 MHz | Australian 27 MHz R/C Channel 4 |
| 27.145 MHz | UK data frequency, UK low-power R/C "Yellow" telemetry (100 mw limit) |
| 27.145 MHz | European standardized Short-Range Device (SRD) 100mw (10 kHz bandwidth or less) (27.140 MHz - 27.150 MHz) "A4" |
| 27.152 MHz | Japanese On-Site Paging and R/C |
| 27.162 MHz | New Zealand channel RP8A on-site paging POCSAG (offset frequency, 27.1625 MHz, 27.163 MHz) |
| 27.170 MHz | New Zealand R/C Channel 117 (100mw maximum power) |
| 27.175 MHz | UK data frequency, UK low-power R/C "Yellow-Green" telemetry (100 mw limit) |
| 27.179 MHz | FSK data links (narrowband bursts) - dial frequency 27.177 MHz USB or 27.180 MHz LSB |
| 27.187 MHz | New Zealand channel RP9A on-site paging POCSAG (offset frequency, 27.1875 MHz, 27.188 MHz) |
| 27.190 MHz | Paging, possibly on-site, heard on French and German SDRs |
| 27.195 MHz | Data link, paging systems and pagers, worldwide - also used for R/C purposes "Channel 19A" |
| 27.195 MHz | Radio Control RC Service Part 95 4 watt power limit in USA |
| 27.195 MHz | Australian 27 MHz R/C Channel 6 |
| 27.195 MHz | UK data frequency, UK low-power R/C "Green" telemetry (100 mw limit) |
| 27.195 MHz | European standardized Short-Range Device (SRD) 100mw (10 kHz bandwidth or less) (27.190 MHz - 27.200 MHz) "A5" |
| 27.195 MHz | Remote Control Technology Short Range Wireless Switch System SRWSS model # 01215 1 watt PTDFM FSK (FM) 27MHz transmitter |
| 27.195 MHz | 4 watt paging systems - USA |
| 27.200 MHz | POCSAG Pager heard in UK and Europe - unknown source |
| 27.210 MHz | Republic of Korea / South Korea on-site paging frequency allocation |
| 27.212 MHz | New Zealand channel RP10A on-site paging POCSAG (offset frequency, 27.2125 MHz, 27.213 MHz) |
| 27.220 MHz | New Zealand R/C Channel 122 (100mw maximum power) |
| 27.220 MHz | POCSAG Pager Signals heard in UK - unknown origin |
| 27.225 MHz | UK data frequency, UK low-power "Green-Blue" R/C telemetry (100 mw limit) |
| 27.230 MHz | European standardized R/C and telemetry |
| 27.233 MHz | POCSAG Paging signals, narrowband (center frequency 27.233, tune 27.230 MHz USB) |
| 27.235 MHz | Digital modes (ROS, PSK31, etc) and paging found here - Europe CB Channel 24 |
| 27.237 MHz | New Zealand channel RP11A on-site paging POCSAG (offset frequency, 27.2375 MHz, 27.238 MHz) |
| 27.237 MHz | Republic of Korea / South Korea on-site paging frequency |
| 27.240 MHz | European standardized R/C and telemetry |
| 27.245 MHz | Digital modes (ROS, PSK31, etc) and paging found here - Europe CB Channel 25 |
| 27.245 MHz | UK data frequency, UK low-power R/C "Blue" telemetry (100 mw limit) |
| 27.246 MHz | Republic of Korea / South Korea on-site paging frequency |
| 27.250 MHz | Noted use in Eastern Europe/Russia for POCSAG |
| 27.250 MHz | POCSAG pager - heard in UK, 8-10 kHz wide signal |
| 27.250 MHz | POCSAG Pager heard in UK and Europe - unknown source |
| 27.255 MHz | Data link, paging systems and pagers, worldwide - also used for R/C purposes - CB Channel 23 |
| 27.255 MHz | Paging USA, 25 watt power allowed in US for paging, telemetry, data link and R/C |
| 27.255 MHz | Radio Control RC Service Part 95 25 watt power limit, 8.5 kHz bandwidth limit in USA |
| 27.255 MHz | On-site paging systems 5 watt power limit - Finland |
| 27.255 MHz | Multiple-site FSK 27 MHz data link system noted near Poughquag, NY USA, 7.5-8 kHz bandwidth FSK bursts |
| 27.255 MHz | Multiple-site FSK 27 MHz data link system noted near Highland Falls, NY USA, nearly constant FSK data bursts - off the air? |
| 27.255 MHz | Multiple-site FSK datalink system noted near CT/MA border, similar data bursts to systems in New York state |
| 27.255 MHz | Multiple-site FSK 27 MHz data link system noted near Rockport, Maine - FSK data bursts identical to those seen on Highland Falls NY SDR |
| 27.255 MHz | Data link system located in rural Virginia, roughly 20 miles north of Richmond, VA (data bursts on 27.255 MHz) |
| 27.255 MHz | RadioShack 7 watt FSK paging transmitter on-site system model PG-80 "8 channel" paging system - 8 different pager IDs supported |
| 27.255 MHz | RadioShack 7 watt FSK paging transmitter on-site system model PG-99 17-6020 - 100 unique receiver (pager) IDs supported |
| 27.255 MHz | RadioShack 4 watt FSK paging transmitter on-site system model 17-6023 - 1000 unique receiver (pager) IDs supported |
| 27.255 MHz | Linear Controls XT-1 1-channel fixed telemetry/control system transmitter, 10 watt FSK, 6 kHz bandwidth 6K00F1D 6K00F2D |
| 27.255 MHz | Linear Controls XT-4 4-channel fixed telemetry/control system transmitter, 10 watt FSK, 6 kHz bandwidth 6K00F1D 6K00F2D |
| 27.255 MHz | Linear Controls XT-1H 1-channel portable telemetry/control system transmitter, 2 watt FSK, 6 kHz bandwidth 6K00F1D 6K00F2D |
| 27.255 MHz | Linear Controls XT-2H 2-channel portable telemetry/control system transmitter, 2 watt FSK, 6 kHz bandwidth 6K00F1D 6K00F2D |
| 27.255 MHz | THOR GUARD Lightning Detection Alert Warning System - siren/alarm control - 4 watts or 12 watts FSK mode |
| 27.255 MHz | THOR GUARD Voice of Thor - VOT - 27.255 MHz one-to-many alarm control system (strobe or siren) - 12w output version |
| 27.255 MHz | THOR GUARD Lightning Detection Alert Warning System L150, L150A - VOT BD / VOT RC 4w or 12w FSK siren alarm |
| 27.255 MHz | Strike Guard Lightning Detector WAVE Transmitter - WAVE Sequencer - 10w FSK on 27.255 MHz |
| 27.255 MHz | WAVE Lightning Detection/Alert Remote Sirens - 10 watt data network connecting remote sites using FSK on 27.255 MHz |
| 27.255 MHz | Command Communications PS2000 PS2000AN PrivatePage On Premises Pager on-site hospital paging system |
| 27.255 MHz | Devar, Inc PS1 PS1-B PR1 PR1-B Plug and Send telemetry systems 10 watts FSK (various versions on the market) |
| 27.255 MHz | Remote Control Technology 4 watt PDTFM FSK 5-mile wireless control and telemetry systems (6 discrete inputs/outputs) |
| 27.255 MHz | Omega Engineering Inc. 10 watt Long Range Wireless System HPWS HPWS-TX and HPWS-REC, multiple TX/RX fixed data/control/telemetry network |
| 27.255 MHz | POCSAG Paging System - unknown location last heard during 11 meter band opening in 2016 |
| 27.259 MHz | FSK data links (narrowband bursts) - dial frequency 27.257 MHz USB or 27.260 MHz LSB |
| 27.262 MHz | New Zealand channel RP12A on-site paging POCSAG (offset frequency, 27.2625 MHz, 27.263 MHz) |
| 27.270 MHz | Local pager, heard in mainland Europe, similar to systems operating on 27.300 MHz and 27.350 MHz |
| 27.272 MHz | Republic of Korea / South Korea on-site paging frequency |
| 27.275 MHz | UK data frequency, UK low-power R/C "White" or "Purple" telemetry (100 mw limit) |
| 27.280 MHz | New Zealand R/C Channel 128 (100mw maximum power) |
| 27.282 MHz | Republic of Korea / South Korea on-site paging frequency |
| 27.300 MHz | POCSAG Paging (heard daily in UK) |
| 27.319 MHz | FSK data links (narrowband bursts) - dial frequency 27.317 MHz USB or 27.320 MHz LSB |
| 27.350 MHz | POCSAG Paging (heard sporadically in UK - unknown origin) |
| 27.360 MHz | POCSAG Paging (heard sporadically in UK - unknown origin) |
| 27.400 MHz | On-site paging systems 5 watt power limit - Finland |
| 27.400 MHz | Republic of Korea / South Korea on-site paging frequency allocation |
| 27.410 MHz | Republic of Korea / South Korea on-site paging frequency allocation |
| 27.410 MHz | European standardized R/C and telemetry |
| 27.412 MHz | Republic of Korea / South Korea on-site paging frequency allocation (offset frequency 27.4125 MHz) |
| 27.415 MHz | European standardized R/C and telemetry |
| 27.415 MHz | Short-range audio links, including radio microphones (Czech Republic) |
| 27.420 MHz | Republic of Korea / South Korea on-site paging frequency allocation |
| 27.422 MHz | Republic of Korea / South Korea on-site paging frequency allocation (offset frequency 27.4225 MHz) |
| 27.430 MHz | On-site paging systems 5 watt power limit - Finland |
| 27.440 MHz | Republic of Korea / South Korea on-site paging frequency allocation |
| 27.442 MHz | Republic of Korea / South Korea on-site paging frequency allocation (offset frequency 27.4425 MHz) |
| 27.450 MHz | Paging, heard in several parts of Europe, sometimes an unmodulated FM carrier transmitted - 27.45 MHz |
| 27.450 MHz | Alarm system datalinks - UK - 500mW power limit (considered a SRD or RC device) |
| 27.450 MHz | On-site paging systems 5 watt power limit - Finland |
| 27.465 MHz | Short-range audio links, including radio microphones (Czech Republic) |
| 27.470 MHz | On-site paging systems 5 watt power limit - Finland |
| 27.490 MHz | On-site paging systems 5 watt power limit - Finland |
| 27.500 MHz | Hospital pagers (Holland) FM mode |
| 27.500 MHz | BEGIN East Asian (Chinese) marine radio FM voice CB and FSK data service, 25 kHz steps to 39.475 MHz / 39.5 MHz |
| 27.505 MHz | POCSAG Paging Signals 8-12 kHz wide |
| 27.510 MHz | Paging, German allocation pager 27 MHz - Germany / Central Europe |
| 27.510 MHz | Paging, voice and data - possibly offset 27.5125 MHz or 27.513 MHz |
| 27.515 MHz | Short-range audio links, including radio microphones (Czech Republic) |
| 27.545 MHz | R/C, data link and telemetry low power "RC channel 31" |
| 27.550 MHz | Paging, POCSAG, heard on European SDRs, unknown origin |
| 27.550 MHz | Hospital pagers (Holland) FM mode |
| 27.565 MHz | Short-range audio links, including radio microphones (Czech Republic) |
| 27.575 MHz | US Government Short-Distance Low-Power Service - data links, remote control, telecommand (or voice) |
| 27.585 MHz | US Government Short-Distance Low-Power Service - data links, remote control, telecommand (or voice) |
| 27.600 MHz | POCSAG Paging (heard daily in Netherlands) |
| 27.615 MHz | Short-range audio links, including radio microphones (Czech Republic) |
| 27.615 MHz | R/C, data link and telemetry low power "RC channel 32" |
| 27.635 MHz | R/C, data link and telemetry low power "RC channel 33" |
| 27.635 MHz | Digital modes (ROS, PSK31, etc) and paging found here - Europe |
| 27.650 MHz | POCSAG Paging (heard daily in Netherlands) |
| 27.650 MHz | Data link/Carrier signal, FM/FSK, possible military possible TX location Norfolk Virginia |
| 27.665 MHz | Short-range audio links, including radio microphones (Czech Republic) |
| 27.675 MHz | R/C, data link and telemetry low power "RC channel 34" |
| 27.700 MHz | POCSAG Paging (heard daily in Netherlands) |
| 27.715 MHz | Short-range audio links, including radio microphones (Czech Republic) |
| 27.720 MHz | On-site paging systems 5 watt power limit - Finland |
| 27.725 MHz | R/C, data link and telemetry low power "RC channel 35" |
| 27.740 MHz | On-site paging systems 5 watt power limit - Finland |
| 27.745 MHz | Data link, telemetry and short range wireless controls - Europe and elsewhere |
| 27.750 MHz | On site paging - Turkey |
| 27.750 MHz | POCSAG Paging (heard daily in Netherlands) |
| 27.760 MHz | On-site paging systems 5 watt power limit - Finland - confirmed active January 2024 |
| 27.760 MHz | MFSK datalink radio data link system, 10 kHz bandwidth - unknown location |
| 27.765 MHz | Short-range audio links, including radio microphones (Czech Republic) |
| 27.775 MHz | R/C, data link and telemetry low power "RC channel 36" |
| 27.775 MHz | On site paging - Turkey |
| 27.780 MHz | On-site paging systems 5 watt power limit - Finland |
| 27.800 MHz | Hospital pagers (Holland) FM mode |
| 27.800 MHz | On-site paging systems 5 watt power limit - Finland |
| 27.800 MHz | On site paging - Turkey |
| 27.815 MHz | Short-range audio links, including radio microphones (Czech Republic) |
| 27.820 MHz | On-site paging systems 5 watt power limit - Finland |
| 27.825 MHz | On site paging - Turkey |
| 27.840 MHz | On-site paging systems 5 watt power limit - Finland |
| 27.845 MHz | POCSAG Pager - UK and/or Europe |
| 27.850 MHz | POCSAG paging signals - Europe |
| 27.850 MHz | On site paging - Turkey |
| 27.850 MHz | Hospital pagers (Holland) FM mode |
| 27.860 MHz | On-site paging systems 5 watt power limit - Finland |
| 27.865 MHz | Short-range audio links, including radio microphones (Czech Republic) |
| 27.875 MHz | On site paging - Turkey |
| 27.880 MHz | On-site paging systems 5 watt power limit - Finland |
| 27.885 MHz | Voice and data paging system, Greece - Greek voice (FM mode) possible offset 27.8875 MHz |
| 27.900 MHz | On site paging - Turkey |
| 27.900 MHz | On-site paging systems 5 watt power limit - Finland |
| 27.905 MHz | European standardized data link, telemetry and R/C - 1 watt power limit max 8.5 kHz bandwidth |
| 27.915 MHz | European standardized data link, telemetry and R/C - 1 watt power limit max 8.5 kHz bandwidth |
| 27.915 MHz | Short-range audio links, including radio microphones (Czech Republic) |
| 27.925 MHz | On site paging - Turkey |
| 27.940 MHz | On-site paging systems 5 watt power limit - Finland |
| 27.940 MHz | Data link systems, Northern Europe, often on the air with Finnish pagers |
| 27.950 MHz | POCSAG Paging - Heard in UK (December 2023) |
| 27.950 MHz | On site paging - Turkey |
| 27.965 MHz | Short-range audio links, including radio microphones (Czech Republic) |
| 27.970 MHz | FSK data links |
| 27.975 MHz | On site paging - Turkey |
| 27.980 MHz | FSK data links |
| 27.990 MHz | FSK data links |
| 27.992 MHz | FSK data links - 27.992 MHz 27.993 MHz |
| 27.995 MHz | FSK data links |
| 29.700 MHz | Telemetry, datalink |
| 29.750 MHz | POCSAG Paging Pager - Heard in UK, likely European origin 29.75 MHz POCSAG |
| 29.800 MHz | POCSAG Paging Pager - Heard in UK, likely European origin 29.8 MHz POCSAG |
| 29.850 MHz | POCSAG Paging Pager - Heard in UK, likely European origin 29.85 MHz POCSAG |
| 29.875 MHz | Telemetry and data link systems, Latin America, Europe |
| 29.900 MHz | POCSAG Paging Pager - Heard in UK, likely European origin 29.9 MHz POCSAG |
| 29.950 MHz | POCSAG Paging Pager - Heard in UK, likely European origin 29.95 MHz POCAG |