HFU HF Underground

Loggings => 10/11 meters => Topic started by: R4002 on June 05, 2017, 1754 UTC

Title: Paging Pager System Frequencies 11 Meters 26 MHz 27 MHz Pager Frequency List
Post by: R4002 on June 05, 2017, 1754 UTC
PLEASE SEE THE HFUNDERGROUND WIKI PAGE FOR UP TO DATE INFORMATION ON 26 - 27 MHZ DATA LINK PAGERS DATALINK SYSTEMS:

https://www.hfunderground.com/wiki/index.php/HF_pagers (https://www.hfunderground.com/wiki/index.php/HF_pagers)

and

https://www.hfunderground.com/wiki/index.php/Remote_Control


THIS LIST IS NO LONGER UPDATED REGULARLY - PLEASE SEE THE LINK ABOVE FOR THE UPDATED LIST OF FREQUENCIES AND USERS ON THE HFUNDERGROUND WIKI

See below frequency list for discussion.

27 MHz paging 26MHz pager 26.200-26.935 MHz European paging frequencies POCSAG frequencies HF paging pager frequency listing 27.255 MHz FCC Part 95 26.945 MHz pager Russia 26.200MHz UK pager 26.835MHz paging Netherlands 26.950MHz pager POCSAG Long Range Systems 26.995MHz 27.045MHz 27.095MHz 27.145MHz 27.195MHz 27.235MHz 27.245MHz 27.255MHz 27.450MHz 27.45 MHz pager 26.900 MHz data link ROS data mode 27.635MHz PSK31 11meters 27.500 MHz 27.5 MHz frequency allocation UK FAT 27MHz R/C frequencies remote control frequencies  Linear Pro Access 27.255 MHz FSK signal 10 watt ISM band 26957-27283 kHz 26.957-27.283 MHz 27.12MHz 27.120 MHz




11 METER PAGING FREQUENCY LIST



26200 kHz / 26.200 MHz - UK Paging on-site pager
26200 kHz / 26.200 MHz - Italy Paging on-site pager (European standard frequency, AM and FM allowed)
26220 kHz / 26.220 MHz - UK Paging on-site pager (offset frequency)
26225 kHz / 26.225 MHz - UK Paging on-site pager (offset frequency)
26237 kHz / 26.237 MHz - UK Paging on-site, non-hospital use (offset frequency, 26.2375 MHz)
26250 kHz / 26.250 MHz - UK Paging on-site pager
26300 kHz / 26.300 MHz - UK Paging on-site pager
26350 kHz / 26.350 MHz - UK Paging on-site pager
26350 kHz / 26.350 MHz - Italy Paging on-site pager (European standard frequency, AM and FM allowed)
26410 kHz / 26.410 MHz - UK Paging on-site, non-hospital use
26437 kHz / 26.437 MHz - UK Paging on-site, non-hospital use (offset frequency, 26.4375 MHz) 
26462 kHz / 26.462 MHz - UK Paging on-site, non-hospital use (offset frequency, 26.4625 MHz) 
26500 kHz / 26.500 MHz - Paging, heard in Europe, noted use in Holland
26545 kHz / 26.545 MHz - UK Paging on-site, non-hospital use
26590 kHz / 26.590 MHz - UK Paging on-site, non-hospital use
26600 kHz / 26.600 MHz - Paging, heard in Europe, allocated in Holland (see 26.5 MHz above)
26605 kHz / 26.605 MHz - Pager, unknown origin, heard on European SDRs during band openings, possible UK hospital pager
26615 kHz / 26.615 MHz - UK Paging on-site, non-hospital use
26635 kHz / 26.635 MHz - Unknown origin pager, logged 21 August 2017 sending POCSAG on UK remote SDR
26670 kHz / 26.670 MHz - UK Paging on-site, non-hospital use
26695 kHz / 26.695 MHz - Offset frequency for 26.700 MHz, heard in Western Europe and UK
26700 kHz / 26.700 MHz - European on-site paging systems, pager transmitter "center frequency"
26705 kHz / 26.705 MHz - Offset frequency for 26.700 MHz, heard in Western Europe and UK
26715 kHz / 26.715 MHz - UK Paging on-site pager
26725 kHz / 26.725 MHz - UK Paging on-site pager
26745 kHz / 26.745 MHz - UK Paging on-site pager
26750 kHz / 26.750 MHz - UK Paging on-site pager
26755 kHz / 26.755 MHz - UK Paging POCSAG on-site pager, monitored in Finland and elsewhere in Europe
26785 kHz / 26.785 MHz - UK Paging on-site pager
26815 kHz / 26.815 MHz - UK Paging on-site pager
26835 kHz / 26.835 MHz - POCSAG pager - unknown origin pager (heard sporadically in UK, heard often in Russia)
26865 kHz / 26.865 MHz - UK Paging on-site pager
26890 kHz / 26.890 MHz - POCSAG pager logged here during band openings, unknown origin
26900 kHz / 26.900 MHz - POCSAG pager - unknown origin (heard daily in UK, very strong signals)
26925 kHz / 26.925 MHz - Data link system, heard in UK during band opening to Eastern Europe
26945 kHz / 26.945 MHz - POCSAG pager and other modes - heard daily in Russia - Russian 26 MHz pager
26950 kHz / 26.950 MHz - Local pager, heard in mainland Europe, transmits "idle" signal even when no pages are being sent
26955 kHz / 26.955 MHz - Paging heard here on Russian SDRs, possible alternate to 26.945 MHz and 26.95 MHz frequencies?
26955 kHz / 26.955 MHz - European standardized R/C and telemetry
26960 kHz / 26.960 MHz - Local pager, heard in mainland Europe, POCSAG paging 26MHz
26960 kHz / 26.960 MHz - European standardized R/C and telemetry
26965 kHz / 26.965 MHz - On-site local paging 5 watt ERP (Finland)
26975 kHz / 26.975 MHz - UK data frequency, UK low-power R/C telemetry (100 mw limit)
26978 kHz / 26.978 MHz - New Zealand channel RP1A on-site paging POCSAG
26995 kHz / 26.995 MHz - Data link, paging systems and pagers, worldwide - also used for R/C purposes
27003 kHz / 27.003 MHz - New Zealand channel RP2A on-site paging POCSAG
27007 kHz / 27.007 MHz - POCSAG paging signal, heard in Finland
27015 kHz / 27.015 MHz - Noted use for low-power on site paging in Ireland
27028 kHz / 27.028 MHz - New Zealand channel RP3A on-site paging POCSAG
27045 kHz / 27.045 MHz - Data link, paging systems and pagers, worldwide - also used for R/C purposes
27053 kHz / 27.053 MHz - New Zealand channel RP4A on-site paging POCSAG
27075 kHz / 27.075 MHz - On-site local paging 5 watt ERP (Finland)
27075 kHz / 27.075 MHz - UK data frequency, UK low-power R/C telemetry (100 mw limit)
27078 kHz / 27.078 MHz - New Zealand channel RP5A on-site paging POCSAG
27090 kHz / 27.090 MHz - Russian pagers, heard on Russian and Eastern European SDRs
27095 kHz / 27.095 MHz - Data link, paging systems and pagers, worldwide - also used for R/C purposes
27103 kHz / 27.103 MHz - New Zealand channel RP6A on-site paging POCSAG
27120 kHz / 27.120 MHz - ISM center frequency +/- 163 kHz, often used for Part 15 devices
27137 kHz / 27.137 MHz - New Zealand channel RP7A on-site paging POCSAG
27140 kHz / 27.140 MHz - Heard on Russian SDRs, presumed to be the -5 kHz channel for 27.145 MHz
27145 kHz / 27.145 MHz - Data link, paging systems and pagers, worldwide - also used for R/C purposes
27162 kHz / 27.162 MHz - New Zealand channel RP8A on-site paging POCSAG
27187 kHz / 27.187 MHz - New Zealand channel RP9A on-site paging POCSAG
27190 kHz / 27.190 MHz - Paging, possibly on-site, heard on French and German SDRs
27195 kHz / 27.195 MHz - Data link, paging systems and pagers, worldwide - also used for R/C purposes
27212 kHz / 27.212 MHz - New Zealand channel RP10A on-site paging POCSAG
27225 kHz / 27.225 MHz - UK R/C and telemetry
27230 kHz / 27.230 MHz - European standardized R/C and telemetry
27235 kHz / 27.235 MHz - Digital modes (ROS, PSK31, etc) and paging found here - Europe
27237 kHz / 27.237 MHz - New Zealand channel RP11A on-site paging POCSAG
27240 kHz / 27.240 MHz - European standardized R/C and telemetry
27245 kHz / 27.245 MHz - Digital modes (ROS, PSK31, etc) and paging found here - Europe
27245 kHz / 27.245 MHz - UK data frequency, UK low-power R/C telemetry (100 mw limit)
27250 kHz / 27.250 MHz - Noted use in Eastern Europe/Russia for POCSAG
27255 kHz / 27.255 MHz - Paging USA, 25 watt carrier power allowed in US for paging, telemetry, data link and R/C
27255 kHz / 27.255 MHz - Linear Controls "Xtended Range Wireless" telemetry/control system, 10 watts FSK mode
27255 kHz / 27.255 MHz - On-site local paging 5 watt ERP (Finland)
27262 kHz / 27.262 MHz - New Zealand channel RP11A on-site paging POCSAG
27270 kHz / 27.270 MHz - Local pager, heard in mainland Europe, similar to systems operating on 27.300 MHz and 27.350 MHz
27275 kHz / 27.275 MHz - UK data frequency, UK low-power R/C telemetry (100 mw limit)
27300 kHz / 27.300 MHz - POCSAG Paging (heard daily in UK)
27350 kHz / 27.350 MHz - POCSAG Paging (heard sporadically in UK - unknown origin)
27360 kHz / 27.360 MHz - POCSAG Paging (heard sporadically in UK - unknown origin)
27400 kHz / 27.400 MHz - On-site local paging 5 watt ERP (Finland)
27400 kHz / 27.400 MHz - Republic of Korea / South Korea on-site paging frequency allocation
27410 kHz / 27.410 MHz - Republic of Korea / South Korea on-site paging frequency allocation
27410 kHz / 27.410 MHz - European standardized R/C and telemetry
27412 kHz / 27.412 MHz - Republic of Korea / South Korea on-site paging frequency allocation (offset frequency)
27415 kHz / 27.415 MHz - European standardized R/C and telemetry
27422 kHz / 27.422 MHz - Republic of Korea / South Korea on-site paging frequency allocation (offset frequency)
27440 kHz / 27.440 MHz - Republic of Korea / South Korea on-site paging frequency allocation
27450 kHz / 27.450 MHz - POCSAG Paging - heard in several parts of Europe
27510 kHz / 27.510 MHz - Paging, German allocation pager 27 MHz
27545 kHz / 27.545 MHz - R/C, data link and telemetry low power "RC channel 31"
27550 kHz / 27.550 MHz - POCSAG Paging (with obvious QRM from 27555 USB)
27600 kHz / 27.600 MHz - POCSAG Paging (heard daily in Netherlands)
27615 kHz / 27.615 MHz - R/C, data link and telemetry low power "RC channel 32"
27635 kHz / 27.635 MHz - R/C, data link and telemetry low power "RC channel 33"
27650 kHz / 27.650 MHz - POCSAG Paging (heard daily in Netherlands)
27650 kHz / 27.650 MHz - Data link (US East Coast based), likely military
27675 kHz / 27.675 MHz - R/C, data link and telemetry low power "RC channel 34"
27700 kHz / 27.700 MHz - POCSAG Paging (heard daily in Netherlands)
27725 kHz / 27.725 MHz - R/C, data link and telemetry low power "RC channel 35"
27750 kHz / 27.750 MHz - POCSAG Paging (heard daily in Netherlands)
27775 kHz / 27.775 MHz - R/C, data link and telemetry low power "RC channel 36"



After several days of browsing through European based remote SDR receivers, I've noticed heavy use of the 11 meter band for paging activities (among other digital modes).  All have been using POCSAG.  The UK frequencies are often quite active, as is 27.300 MHz (although I can't figure out where this one comes from).  The 27.600 MHz one is based somewhere in Northern Europe and is extremely strong, often pushing past S9+30db signal strength.  The 26.950 MHz pager appears to be operating out of The Netherlands and transmits an idle signal even when no data packets or pages are being sent.  26.835 MHz appears to be used by both UK-based pagers and on-site (possibly hospitals) paging systems in Russia.  26.945 MHz is heavily used in Russia, often with several signals on 26.945 MHz FM at once.
 

[Original post in italics]

Pagers seem to cluster around certain frequencies, namely the 26.2 MHz to 26.5 MHz region, the 26.6-27 MHz region, the "in-band" pagers), and then those operating on the "high channels" (above 27.4 MHz or so).  The 26.6-27 MHz area seems to be the most active, although the UK hospital pagers on 26MHz are often incredibly loud during band openings and can be heard all over Europe.

The Europeans seem to be a lot more fond of both the FM voice mode and using 11 meters for digital modes and local paging. 

I have added frequencies in use outside Europe, but since most of my monitoring is either done locally (in the USA) or via remote receivers (remote SDRs, usually from the KiwiSDR list, etc) - any and all contributions to the list are welcome.  The list will be updated as often as possible.  Europe has the band 26.225 MHz to 26.935 MHz "harmonized" for "EU-wide" paging operations.  Of course, this clashes with or overlaps with several CB allocations, including the 26.565-27.405 MHz band used in Germany, Hungary and the Czech Republic and the 26.5-28 MHz band used in Russia.  On-site paging using the 26 MHz and 27 MHz bands appears to be very popular in both Western Europe and Eastern Europe in addition to Russia, the CIS and the former USSR.

Please note the following:

The 6 "standard" remote control, RC or R/C frequencies are often used for telemetry purposes.  They are often identified by color-coding (especially for R/C purposes).  These channels are 35 kHz from the original band edges of 26.96 MHz to 27.23 MHz and spaced 50 kHz apart.  In the USA, 4 watts carrier is allowed on the 5 original "auxiliary" frequencies and 25 watts carrier is allowed on 27.255 MHz (which is shared with CB channel 23 and therefore usually only used for higher-power applications).  27.255 was added as an RC channel in 1977 when the CB band was expanded from 23 to 40 channels.  These frequencies are used worldwide and often have voice communications heard on them during band openings.

26.995 MHz - Channel 1 Brown Channel or CB 3A
27.045 MHz - Channel 2 Red Channel or CB 7A
27.095 MHz - Channel 3 Orange Channel or CB 11A
27.145 MHz - Channel 4 Yellow Channel or CB 15A - seems to be the most common for wireless keyboards etc.
27.195 MHz - Channel 5 Green Channel or CB 19A
27.255 MHz - Channel 6 Blue Channel or CB 23

The UK R/C frequencies also use a color-coding system, with more of their frequencies shared with CB channels.  Original UK specifications called for 20 kHz wide data, newer specs call for 10 kHz narrowband.  27.255 MHz was the original RC frequency for the UK, with "side" frequencies 25 kHz above and below (27.230 MHz and 27.280 MHz).

26.975 MHz - Black Channel
26.995 MHz - Brown Channel
27.025 MHz - Brown-Red
27.045 MHz - Red
27.075 MHz - Red-Orange
27.095 MHz - Orange
27.125 MHz - Orange-Yellow
27.145 MHz - Yellow
27.175 MHz - Yellow-Green
27.195 MHz - Green
27.225 MHz - Green-Blue
27.245 MHz - Blue (UK spec)
27.255 MHz - Blue (US spec and de facto worldwide spec)
27.275 MHz - White or Purple

New Zealand R/C frequencies are even more varied, with heavy use of the 29 MHz band (see also: Australia).  In New Zealand, AM mode is the only mode allowed in the 26 MHz and 27 MHz bands.  AM and FM are allowed on 29 MHz for RC purposes:

26.975 MHz - Channel 197
26.995 MHz - Channel 199
27.020 MHz - Channel 102
27.045 MHz - Channel 104
27.070 MHz - Channel 107
27.095 MHz - Channel 109
27.120 MHz - Channel 112
27.145 MHz - Channel 114
27.170 MHz - Channel 117
27.195 MHz - Channel 119
27.220 MHz - Channel 122
27.245 MHz - Channel 124
27.280 MHz - Channel 128


Title: Re: European Paging Pager Frequencies 11 meters. Use to be in USA as well.
Post by: ThaDood on June 08, 2017, 0122 UTC
     I still remember when Radio shack sold the CB digital pager in the 1980's that was in between CB channel FREQ's. (What freebanders called the "A" channels.) The offices at college (Back in 1987.), had me help extend the range of their system, so I used their filing cabinet as a GND Plane. Worked pretty good. I'm guessing that disappeared with the introduction of cell phones.
Title: Re: European Paging Pager Frequencies 11 meters
Post by: R4002 on June 12, 2017, 2000 UTC
The RadioShack pagers operated on 27255 kHz / 27.255 MHz (CB channel 23).  While FCC rules permit up to 4 watts on the "A" channels but up to 25 watts (carrier power) on channel 23.  The RadioShack paging transmitters did 6-7 watts carrier power IIRC, which, with a ground plane antenna, I imagine produced some impressive coverage.

I have personally monitored (and recorded) POCSAG traffic on 27255 during band openings.  I know this frequency is used for point-to-point data links in specialized "niche" systems like lightning detector systems today.  The fact that pager traffic has been heard recently on 27.255 MHz channel 23 indicates that at least some of the RS paging transmitter systems are still in operation.
Title: Re: Paging Pager System Frequencies 11 Meters 26 MHz 27 MHz Pager Frequency List
Post by: dave524 on November 24, 2017, 0039 UTC
I was just at Shopper's Drug Mart here in Ontario. They give you a pager that vibrates when your prescription is ready and you can do the rest of your shopping. Looking at the backside in the fine print it operates on 26.995 Mhz, channels 3A to some.
Title: Re: Paging Pager System Frequencies 11 Meters 26 MHz 27 MHz Pager Frequency List
Post by: R4002 on December 03, 2017, 1253 UTC
Since the pager you're talking about has to work throughout the store, I imagine its associated transmitter operating on 26.995 MHz is not transmitting ISM power levels, but CB power levels (4 watts carrier or so).  Even with an inefficient back-of-set type of antenna, 4 watts on 26.995 would be very effective and covering an entire store with small receivers equipped with even lower efficiency antennas.  Nice find, dave524.  I've seen lots of restaurant pagers operating in the UHF band (usually 467.750 MHz) but its awesome to hear that there are systems operating on 26 MHz and 27 MHz as well.  I personally think that with the right antenna system and the fact that 26/27 MHz paging systems provide higher (possible) power levels...you could get a lot more range out of 27MHz over UHF.

I have a feeling Canadian regulations regarding paging on the 11 meter band are similar to US regulations.  US rules allow for up to 4 watts carrier power on the five exclusive "R/C" frequencies:

26995 kHz - 26.995 MHz - RC channel 1 or Brown also known as channel 3A - CB channel 3 +10 kHz
27045 kHz - 27.045 MHz - RC channel 2 or Red also known as channel 7A - CB channel 7 + 10 kHz
27095 kHz - 27.095 MHz - RC channel 3 or Orange also known as channel 11A - CB channel 11 + 10 kHz
27145 kHz - 27.145 MHz - RC channel 4 or Yellow also known as channel 15A - CB channel 15 + 10 kHz
27195 kHz - 27.195 MHz - RC channel 5 or Green also known as channel 19A - CB channel 19 + 10 kHz


As mentioned before, 27255 kHz - 27.255 MHz is also listed as part of this service, but has a higher maximum power level of 25 watts carrier power and is shared with CB channel 23.  27.225 MHz is often referred to as RC channel 6 or Blue.  Due to the potential for interference on 27.255 MHz, it seems like most of the systems like what dave524 is referring to seem to stick on the data only frequencies where voice communications are not allowed.
Title: Re: Paging Pager System Frequencies 11 Meters 26 MHz 27 MHz Pager Frequency List
Post by: Max on January 05, 2021, 0939 UTC
A lot of pager services use the same frequencies as CB radio. I often wondered what is the potential for interference to pagers from the CB transmissions. Could a CB transmission block the recipient from getting a message, and how near to the site would the CBer need to be? Also, which came first on that band, CB or pagers? I believe that the beginnings of CB radio were around 1946 in the US.