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Messages - R4002

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31
Via G8JNJ SDR, first noted because there are/were also Asian fishermen chattering away on 30.000 MHz FM and there's a carrier on 29999.35 kHz.

These guys are on 30000.0 kHz LSB.  30.000.0 MHz LSB lower side band, actually, 29999.9 kHz sounds a bit better.  So maybe they're just using the highest frequency their radios can go to?  I've noted guys using 30.000 MHz USB before, but this is unique.  29.999.9 MHz 29,999.9 kHz 29999.9 kHz LSB chatter.  Likely freebanders.  Pretty severe QRM from the fishery radio chatter on 30.0000 MHz FM [CSQ] and due to the various carriers on/around 30.000 MHz.




32
1730 UTC
18 September 2024

Via G8JNJ SDR receiver:

27.725 MHz FM
27.750 MHz FM
27.875 MHz FM
27.900 MHz FM
27.950 MHz FM
27.975 MHz FM
28.050 MHz FM
28.150 MHz FM with QRM from 28.155 MHz FM and 28.145 MHz AM and FM!
28.825 MHz FM
28.875 MHz FM
28.925 MHz FM
29.100 MHz FM
29.175 MHz FM - active around 1732 UTC, sounds like Japanese
29.225 MHz FM
29.350 MHz FM
29.575 MHz FM
29.775 MHz FM
29.825 MHz FM
29.850 MHz FM
29.875 MHz FM - very active, probably the busiest frequency
29.925 MHz FM - activity first noted around 1731 UTC
30.000 MHz FM - active, with QRM from carrier and 30.000 MHz LSB chatter
30.025 MHz FM - QRM from weak POCSAG paging signals 30.020 MHz 30.022 MHz Canadian hospitals
30.100 MHz FM
30.125 MHz FM
30.350 MHz FM
30.500 MHz FM
31.175 MHz FM
31.200 MHz FM

1745 UTC - 1755 UTC

27.600 MHz FM - very severe QRM from freeband CB and UK FM CB channel 1 freq 27.60125 MHz FM
27.900 MHz FM
28.775 MHz FM
28.925 MHz FM
29.100 MHz FM
29.175 MHz FM - the most active frequency within the 10 meter band at the moment
29.550 MHz FM
29.750 MHz FM
29.800 MHz FM
29.825 MHz FM
29.875 MHz FM
29.900 MHz FM
29.925 MHz FM
30.000 MHz FM - with severe QRM from the 29.9999 MHz LSB 30.0000 MHz LSB signals on frequency
30.775 MHz FM
30.800 MHz FM
31.000 MHz FM
31.175 MHz FM
31.225 MHz FM
31.425 MHz FM - now the busiest frequency
31.800 MHz FM

33
155TW321 CB radio channel 1 radio propagation beacon 11m beacon 11 meter beacon 27 MHz CB radio beacon CH1 frequency 26.965 MHz

Transmits every 3 minutes, Morse code CW ID 155TW321

Power output: 1 watt
Antenna: wire dipole, 1/2 wave inverted V configuration half wave dipole
Location: Taiwan


Frequency: 26965 kHz 26.965 MHz
CB radio channel 1
CB radio band plan standard CEPT band EU band CE band USA FCC CB band 26.965 MHz - 27.405 MHz band plan


Tune CB radio frequencies on ham radio or general coverage receiver 26.965 MHz

Tune 26.964 MHz USB or 26.963 MHz USB, CW appears to be just below the 26965.0 center frequency - 26964.4 kHz 26964.5 kHz. 

Video of reception by a station in Australia, demonstrating reception of signal on
- an older President Grant export radio (Superstar GR)
- a newer Yaesu FT-950 HF ham rig
- a SDR waterfall display

https://www.youtube.com/watch?v=XvSF4_gBIyI

All credit for the video above goes to 43PR50

34
Russian taxi cabs, received via SDR receiver located in the UK.  IARU intruder watch calls these CIS taxis, Russian taxis, etc. on 28MHz band.  Note the use of the lower portion of 28 MHz band 10 meter band.  The "standard" export radio coverage is 25.615 MHz to 28.305 MHz.  Note that the legal Russian CB radio band is 26.510 MHz to 27.865 MHz (5 kHz steps, AM, FM and SSB allowed).  I've omitted the 27.050 MHz FM, 27.055 MHz FM, 27.070 MHz FM, 27.100 MHz FM, 27.200 MHz FM and many many other repeaters in use in Russia, including for taxi comms.  27100 kHz FM is very prolific and comes in on a very regular basis.  There appear to be multiple simplex repeaters on 27050 FM, 27055 FM and many others.  27.135 MHz AM 27,135 AM is also very busy.  27.330 MHz FM and 27.335 MHz FM both appear to also have repeaters on them, even though 27330 FM is used for land mobile - taxi cab dispatch) purposes. 


25.615 MHz FM 25615 kHz FM 25,615 FM - Band A Channel 1
https://www.youtube.com/watch?v=IQ0w2LD7gVs

25.635 MHz FM 25635 kHz FM 25,635 FM
https://www.youtube.com/watch?v=tFD1QBnWYZQ

25.865 MHz FM 25865 kHz FM 25,865 FM
https://www.youtube.com/watch?v=Q7AAU4riurY

25.975 MHz FM 25975 kHz FM 25,975 FM
https://www.youtube.com/watch?v=FAvFEe16L3Y

25.985 MHz FM 25985 kHz FM 25,985 FM
https://www.youtube.com/watch?v=dEzPy8TZ044

26.115 MHz FM 26115 kHz FM 26,115 FM
https://www.youtube.com/watch?v=DvPHpn6Wiic

26.115 MHz FM 26115 kHz FM 26,115 FM
https://www.youtube.com/watch?v=Z6rOXjOW_Rg

26.155 MHz FM 26155 kHz FM 26,155 FM
https://www.youtube.com/watch?v=DvPHpn6Wiic

26.175 MHz FM 26175 kHz FM 26,175 FM
https://www.youtube.com/watch?v=3HxsYY_Si_E

26.240 MHz FM 26240 kHz FM 26,240 FM
https://www.youtube.com/watch?v=-7YudrdfV_s

26.285 MHz FM 26285 kHz FM 26,285 FM
https://www.youtube.com/watch?v=apYcnNhRIUc

26.375 MHz FM 26375 kHz FM 26,375 FM
https://www.youtube.com/watch?v=cdov9Or5KSY

26.510 MHz FM 26510 kHz FM 26,510 FM
https://www.youtube.com/watch?v=-e18t6q0OAo

26.510 MHz FM  26510 kHz FM 26,510 FM
https://www.youtube.com/watch?v=d2kGT4Z1XPc

26.535 MHz FM 26535 kHz FM 26,535 FM
https://www.youtube.com/watch?v=mS3UftW8q3M

26.560 MHz FM 26560 kHz FM 26,560 FM
https://www.youtube.com/watch?v=fIJZ1jH-ALw

26.705 MHz FM 26705 kHz FM 26,705 FM
https://www.youtube.com/watch?v=8uQ_B4cGtRw

26.895 MHz FM 26895 kHz FM 26,895 FM
https://www.youtube.com/watch?v=_QoSXBdtuWY

26.895 MHz FM 26895 kHz FM 26,895 FM
https://www.youtube.com/watch?v=sshVqDchhqU

27.330 MHz FM 27330 kHz FM 27,330 FM CB radio channel 33R 33P
https://www.youtube.com/watch?v=LVNAVcPlZxU

27.330 MHz FM 27330 kHz FM 27,330 FM CB radio channel 33R 33P
https://www.youtube.com/watch?v=K8jmXD00rhA

27.330 MHz FM 27330 kHz FM 27,330 FM CB radio channel 33R 33P
https://www.youtube.com/watch?v=MfvYC94VHdc

27.425 MHz FM 27425 kHz Fm 27,425 FM
https://www.youtube.com/watch?v=egTMsZzoNVQ

27.430 MHz FM 27430 kHz FM 27,430 FM
https://www.youtube.com/watch?v=tl57M7y3c7o

27.655 MHz FM with QRM from fishing boat chatter comms on 27.650 MHz FM:
https://www.youtube.com/watch?v=jz_B6omfBf0

27.695 MHz FM 27695 kHz FM 27,695 FM
https://www.youtube.com/watch?v=GSf3c44nciQ

27.735 MHz FM 27735 kHz FM 27,735 FM
https://www.youtube.com/watch?v=OyMLpRCzmC4

27.735 MHz FM 27735 kHz FM 27,735 FM
https://www.youtube.com/watch?v=0Z-4EDUAtTU

27.805 MHz FM 27805 kHz FM 27,805 FM
https://www.youtube.com/watch?v=5gLzjca9iPs

27.805 MHz FM 27805 kHz FM 27,805 FM
https://www.youtube.com/watch?v=TvXM3xRK6hc

27.815 MHz FM 27815 kHz FM 27,815 FM
https://www.youtube.com/watch?v=W__-QGC3djw

27.865 MHz FM 27865 kHz FM 27,865 FM - Band E Channel 1
https://www.youtube.com/watch?v=9dVwWCoA1Rw

27.865 MHz FM 27865 kHz FM 27,865 FM
https://www.youtube.com/watch?v=xU_pEqbg-S4

27.925 MHz FM 27925 kHz FM 27,925 FM
https://www.youtube.com/watch?v=VFlIbeYRAGY

27.975 MHz FM 27975 kHz FM 27,975 FM
https://www.youtube.com/watch?v=d9uinqAEOv8

28.055 MHz FM 28055 kHz FM 28,055 FM
https://www.youtube.com/watch?v=bZk27RMpoSU

28.115 MHz FM 28115 kHz FM 28,115 FM
https://www.youtube.com/watch?v=jrkC9SN2VWk

28.115 MHz FM 28115 kHz FM 28,115 FM
https://www.youtube.com/watch?v=13vinS05AN8

28.135 MHz FM 28135 kHz FM 28,135 FM
https://www.youtube.com/watch?v=tQ0PJxWs69Y

28.135 MHz FM 28135 kHz FM 28,135 FM
https://www.youtube.com/watch?v=3kA7L5GY_j0

28.155 MHz FM 28155 kHz FM 28,155 FM
https://www.youtube.com/watch?v=Bdn4sZk5-Zs

28.155 MHz FM 28155 kHz FM 28,155 FM
https://www.youtube.com/watch?v=yUQ8QO9hltI

28.195 MHz FM 28195 kHz FM 28,195 FM
FM https://www.youtube.com/watch?v=XCjI-KIRNJk

28.210 MHz FM 28210 kHz FM 28,210 FM
https://www.youtube.com/watch?v=CeZkMHZBb6w

28.215 MHz FM 28215 kHz FM 28,215 FM
https://www.youtube.com/watch?v=31I_WkU4P28

28.225 MHz FM 28225 kHz FM 28,225 FM
https://www.youtube.com/watch?v=jHtGN4IOhWQ

28.245 MHz FM 28245 kHz FM 28245 FM
https://www.youtube.com/watch?v=U6GoheMy4MI

28.245 MHz FM 28245 kHz FM 28245 FM
https://www.youtube.com/watch?v=rRYLb2mYYZU

28.265 MHz FM 28265 kHz FM 28265 FM
https://www.youtube.com/watch?v=gHuPSg6jD98

28.265 MHz FM 28265 kHz FM 28265 FM
https://www.youtube.com/watch?v=uozFO7ok7PU

28.285 MHz FM 28285 kHz FM 28285 FM
https://www.youtube.com/watch?v=bKm5QBEuDsw

29.855 MHz FM 29855 kHz FM 29,855 FM
https://www.youtube.com/watch?v=18AUN-PGigU




There are taxi cabs operating in the portion of 10m above 28.305 MHz / 28.310 MHz / 28.315 MHz, including up through 29 MHz and above (see 29.855MHz below).  Taxi dispatch comms have been logged on 30.025 MHz FM, 30.035 MHz FM, 30.055 MHz FM, 30.075 MHz FM, 30.095 MHz FM, 30.100 MHz FM and 30.105 MHz FM.  The flood of Chinese made export radios that cover 25.615 MHz to 30.105 MHz / 25.610 MHz to 30.110 MHz 30.115 MHz means that the whole 10 meter band is now available, along with the spectrum above it 29 MHz and the very bottom of 30 MHz. 

There are many VHF low band systems in operation as well, including on 38.525 MHz FM, 38.725 MHz FM, 37.225 MHz FM, 37.375 MHz FM, 37.125 MHz FM and other frequencies in the 30-40 MHz region.  25 kHz spacing appears to be the most commonly seen band plan, with the 30-50 MHz systems using CTCSS tone squelch (PL tones) and wider FM deviation. 

35
Via G8JNJ SDR - located in the UK.  1630 UTC to 1632 UTC.  Frequency 25575 kHz 25,575kHz 25.5750 MHz AM 25575.0 AM

https://www.youtube.com/watch?v=O9M9nzAcogo

Possibly just freebanders, or could be fishing fleets or other users.  Not unheard of to hear 11 meter CB radio free band comms below 25.615 MHz, as many radios start at 24.715 MHz or 25.165 MHz or even 24.265 MHz as their "Band A Channel 1" frequency. 

At the time the guys were chatting away on 25.575 MHz AM, there were numerous other signals from Europe and the Americas coming in on the 25-30 MHz band.  26.225 MHz FM was active, likely with business users land mobile users using export radios,

Back on 23 March 2024, I heard similar traffic on 26.125 MHz AM, possibly also a fishing fleet or other freeband users.  They seem to like the high 25 MHz band and lower part of 26 MHz, but are all over the place, including in the little sliver of spectrum between 29.7 MHz and 30.000 MHz.  Yep, there are land mobile and marine users of those frequencies, not just the 29.710 MHz FM, 29.730 MHz FM, 29.750 MHz FM, 29.770 MHz FM and 29.790 MHz FM FCC Part 90 Business Radio Service frequencies either.   There are taxi cab radio systems on 29.855 MHz FM, 29.905 MHz FM, 29.915 MHz FM, 29.945 MHz FM, 29.965 MHz FM out of Russia, no doubt others are there too.  They're all over 10 meters too. 

36
10/11 meters / Re: UNID 25950 FM 1523 01 SEPT 2024
« on: September 04, 2024, 1322 UTC »
Nice, actually catching audio on the 25.950 MHz STL signal is pretty awesome.  Did you managed to pull a PL tone (CTCSS tone) off it?  I believe during the last sunspot cycle peak (when there seemed to be audio on 25950 FM nearly all the time), they were using 85.4 Hz (it may have been 82.5 Hz or 88.5 Hz).  I know that at that point, 25.910 MHz FM and 25.990 MHz FM were both also on very often.  25910 FM and 25990 FM current status is unknown.

I heard the usual unmodulated FM carrier yesterday 03 September 2024 coming in pretty strong, almost totally quieting my receivers in FM mode (handheld scanners with telescopic CB walkie talkie antennas) at points.  WWV on 25.000 MHz was full scale at the same time. 

37
Received via W3HFU's excellent online receiver.  Link to YouTube video below.  Tune in time: 1729 UTC / 1730 UTC, received 3 September 2024.

Center frequency is 27.603.5 MHz 27603.5 kHz

Tuned in other modes:   

27.605 MHz LSB
27.602 MHz USB
27.605 MHz FM
27.603 MHz USB and so on.

Link to video below:

https://www.youtube.com/watch?v=nqVHZmU740s


38
Logs
frequencies in MHz.   


466.1375 [67.0 Hz] School, active
464.5500 026 DCS] Construction
461.2125 [88.5 Hz] “around the truck”
464.5500 [82.5 Hz] Crane control, Spanish
462.7250 [136.5 Hz] School
464.5000 [162 DCS] Construction
462.9125 [192.8 Hz] Crane control
467.8500 [74.4 Hz] Crane control
462.5500 [71.9 Hz] Warehouse comms
467.9000 [100.0 Hz] Retail, inventory
151.8200 [127.3 Hz] Hospitality
466.1875 [71.9 Hz] Weak
469.4875 [94.8 Hz] Crane control
464.5500 [103.5 Hz] “Playbook”
151.9550 [94.8 Hz] Weak
467.6375 [67.0 Hz] School? Weak
462.5750 [67.0 Hz] Crane control?
462.8625 [167.9 Hz] Weak, UNID
464.5500 [325 DCS] Construction
467.9250 [67.0 Hz] Security
462.5625 [67.0 Hz] School? very strong
464.5000 [77.0 Hz] “over here, Jay”
462.5750 [141.3 Hz] GMRS repeater keyup
151.8200 [141.3 Hz] Water/sewer work
467.7125 [114 DCS] Building ops
462.6750 [606 DCS] Warehouse/retail
469.5625 [186.2 Hz] Crane control
151.5125 [136.5 Hz] Crane control
464.5000 [612 DCS] “3 inch sprinkle”
457.5250 [315 DCS] School
151.6250 [167.9 Hz] Crane Master
467.8750 [114 DCS] Spanish
462.6500 [CSQ] “Mike, check level 2”
467.5625 [032 DCS] Car to car comms
151.8200 [67.0 Hz] “Elevator 3”
467.7625 [67.0 Hz] Retail
461.2625 [346 DCS] Parking coordination?
467.8500 [179.9 Hz] Weak, UNID
464.5500 [97.4 Hz] Construction
462.6250 [141.3 Hz] GMRS repeater keyup
151.6250 [67.0 Hz] Highway maintenance
462.7000 [146.2 Hz] Spanish
467.6125 [67.0 Hz] FRS call tones
461.2625 [346 DCS] School?
467.8500 [CSQ] Data bursts
467.5875 [026 DCS] “panel 3”
467.7500 [CSQ] Data bursts, paging
154.4900 [67.0 Hz] Highway maintenance
462.8625 [172 DCS] Voice inversion
461.3375 [743 DCS] Construction
462.6625 [88.5 Hz] Security?
467.6625 [CSQ] Elevator work
464.5000 [464 DCS] “he’s gonna take..”
462.6750 [67.0 Hz] “book was took out”
154.5700 [712 DCS] “unit 2” “red cone”
461.2125 [67.0 Hz] “front desk”
467.9000 [203.5 Hz] Spanish
462.7125 [146.2 Hz] “mid day walk”
466.2125 [85.4 Hz] Hotel/hospitality
469.4875 [110.9 Hz] “copy that”
467.7625 [047 DCS] Building maintenance
464.5000 [162.2 Hz] HVAC testing?
462.5875 [025 DCS] Alarm techs
154.6000 [88.5 Hz] Mobile to mobile
462.5750 [223 DCS] Day care?
467.8750 [67.0 Hz] Traffic control
464.5500 [CSQ] Data bursts
462.7250 [CSQ] “depends on what it is”
467.8750 [025 DCS] Maintenance crew
467.8125 [77.0 Hz] Flagmen
151.8800 [110.9 Hz] “where is the…”
462.7125 [77.0 Hz] FRS call tones
469.5000 [026 DCS] Construction
462.5875 [CSQ] Crane control
467.8500 [100.0 Hz] Warehouse ops
462.5500 [123.0 Hz] Weak
464.5000 [179.9 Hz] Hotel front desk
462.6625 [136.5 Hz] Catering
151.8200 [114 DCS] “Come to cafeteria”
464.5500 [103.5 Hz] Construction
462.7250 [252 DCS] Spanish
469.5500 [346 DCS] “level 6” “check”
467.8750 [131.8 Hz] Crane control
462.6875 [114.8 Hz] “shutting down”



151.8200 MHz - MURS 1
151.8800 MHz - MURS 2
151.9400 MHz - MURS 3
154.5700 MHz - MURS 4
154.6000 MHz - MURS 5

462.5625 MHz - FRS 1
462.5875 MHz - FRS 2
462.6125 MHz - FRS 3
462.6375 MHz - FRS 4
462.6625 MHz - FRS 5
462.6875 MHz - FRS 6
462.7125 MHz - FRS 7
467.5625 MHz - FRS 8
467.5875 MHz - FRS 9
467.6125 MHz - FRS 10
467.6375 MHz - FRS 11
467.6625 MHz - FRS 12
467.6875 MHz - FRS 13
467.7125 MHz - FRS 14
462.5500 MHz - FRS 15
462.5750 MHz - FRS 16
462.6000 MHz - FRS 17
462.6250 MHz - FRS 18
462.6500 MHz - FRS 19
462.6750 MHz - FRS 20
462.7000 MHz - FRS 21
462.7250 MHz - FRS 22

151.5050 MHz - Itinerant
151.5125 MHz - Itinerant
151.6250 MHz - Itinerant “Red Dot”
151.6400 MHz - Itinerant
151.7000 MHz - Itinerant
151.7600 MHz - Itinerant
151.9550 MHz - Itinerant “Purple Dot”
154.5275 MHz - Itinerant
158.4000 MHz - Itinerant
158.4075 MHz - Itinerant



More logs 31 August



467.9250 [71.9 Hz]
464.5000 [74.4 Hz]
467.9250 [107.2 Hz]
466.3625 [331 DCS]
462.7625 [203.5 Hz]
467.8500 [047 DCS]
467.9000 [331 DCS]
467.9250 [82.5 Hz]
467.8500 [743 DCS]
464.5500 [67.0 Hz]
461.0875 [88.5 Hz]
464.5500 [107.2 Hz]
464.5500 [025 DCS]
467.8750 [79.7 Hz]
461.1625 [67.0 Hz]
466.2875 [032 DCS]
467.7625 [223 DCS]
461.1125 [172 DCS]
464.5000 [179.9 Hz]
462.5500 [123.0 Hz]
462.7125 [146.2 Hz]
467.9250 [155 DCS]
466.0375 [94.8 Hz]
461.2375 [67.0 Hz]
467.9250 [67.0 Hz]
469.4875 [103.5 Hz]
467.7625 [74.4 Hz]
464.5000 [223 DCS]
462.6250 [127.3 Hz]
467.8125 [315 DCS]
467.9250 [172 DCS]
461.3125 [412 DCS]
464.5500 [223 DCS]
467.9125 [91.5 Hz]
467.8750 [100.0 Hz]
462.5875 [71.9 Hz]
469.5500 [172 DCS]
467.8750 [67.0 Hz]
461.2125 [67.0 Hz]
461.0375 [172 DCS]
464.5500 [466 DCS]
467.7625 [131 DCS]
462.9125 [065 DCS]
467.9250 [210.7 Hz]
462.5875 [118.8 Hz]
467.7500 [115 DCS]
467.7500 [CSQ] Data Paging
467.8500 [67.0 Hz]
467.9250 [74.4 Hz]
467.7750 [072 DCS]
467.9000 [205 DCS]
467.9250 [118.8 Hz]
464.5125 [218.1 Hz]
462.8625 [026 DCS]
467.9250 [246 DCS]
466.1125 [612 DCS]
469.5625 [146.2 Hz]

39
1340 UTC tune in time, started with W3HFU SDR with the 120 foot T2FD antenna.  Tune out time: 1355 UTC.

26765kHz AM out of Mexico very good signal this morning.  Dispatcher YL SS slightly off-frequency 26764.8 kHz close enough to 26765kHz AM taxi cab radio dispatch LMR PMR PLMR land mobile radio business band taxi cab business radio taxi controllers on CB radio 27MHz band.  Alphanumeric and numeric IDs (each taxi has a unique identifier), addresses, phone numbers, streets and other information YL dispatcher with unique multi-tone "Roger Beep" end of transmission.  Relatively quiet band at this time, could be some sporadic-E DX or the beginnings of a bigger opening, TEP type propagation.


Noting some other activity on the 25.615 MHz to 27.995 MHz 25-28 MHz 26-28 MHz band...additional logs below. 

25695 kHz AM 25.695 MHz AM - Taxi dispatch, weak to fair, some SSB chatter in background
25815 kHz AM 25.815 MHz AM - Mexican taxi cab radio chatter, YL dispatch + OM drivers
26035 kHz AM 26.035 MHz AM - Taxi cab radio dispatch, taxi controllers - YL Spanish - Mexico
26075 kHz AM 26.075 MHz AM - Fair to weak, taxi cab dispatcher, YL reading numbers in Spanish over radio
26115 kHz AM 26.115 MHz AM - Taxi cab radio dispatch, taxi controllers - YL Spanish - Mexico or Latin American LMR
26145 kHz AM 26.145 MHz AM - Taxi cab radio dispatch, taxi controllers - YL Spanish - Mexico
26175 kHz AM 26.175 MHz AM - Taxi cab radio dispatch, taxi controllers - YL Spanish - Mexico
26335 kHz AM 26.335 MHz AM - Taxi cab radio dispatch, taxi controllers - YL Spanish - Mexico
26665 kHz AM 26.665 MHz AM - YL taxi dispatch lady, several OMs heard with noise toys
26675 kHz AM 26.675 MHz AM - Taxi cab dispatch, Mexican radio taxi cab, severe QRM from 26.6750 MHz LSB freebanders
26765 kHz AM 26.765 MHz AM - Strong this morning, YL dispatcher with end of transmission tones, OM drivers, see above logs
26935 kHz AM 26.935 MHz AM - Taxi cab radio dispatch, Mexico - previously logged activity on same frequency
27215 kHz AM 27.215 MHz AM - Taxi cab radio dispatch, YL dispatcher - CB Radio Channel 21 AM
27255 kHz AM 27.255 MHz AM - Taxi cab radio dispatch, YL dispatcher - CB Radio Channel 23 AM
27755 kHz AM 27.755 MHz AM - Weak taxi cab dispatch, much stronger SSB signals on 27755 LSB
27785 kHz AM 27.785 MHz AM - YL taxi dispatcher, Spanish language - Mexico taxicab radio dispatch 27,785
27805 kHz AM 27.805 MHz AM - Taxi cab chatter, YL dispatcher, reading numbers in Spanish, very severe QSB / fading
27955 kHz AM 27.955 MHz AM - Taxi cab radio dispatch 27,955 27.955MHz AM Mexican accent SS

40
10/11 meters / Re: UNID 25915 AM 1735 AUG 17 2024
« on: August 20, 2024, 1338 UTC »
Interesting - not 25800 kHz AM or 25900 kHz AM?  Sounds like a pirate.  The lower part of 26 MHz and the upper part of 25 MHz

25.610 MHz - 26.505 MHz (roughly) is used for all sorts of two-way comms systems, land mobile (taxis, etc.) 5 kHz steps, AM/FM, plus SSB freebanders, marine users and yes the 11 meter broadcast band.  Plus 25.87 MHz to 26.47 MHz is used for STL and IFB purposes, but that's not what you were hearing based on the 25.915 MHz AM frequency.  25.910 MHz FM had a nearly steady broadcast link audio on it during the last sunspot cycle peak (along with 25.950 MHz FM and 25.990 MHz FM), but that's gone now (at least on a regular basis).

41
G8JNJ remote SDR receiver
Location: SW UK
Grid: IO80QR



Start time: 1215 UTC
End time: 1230 UTC

Most of the logs are part of the DDE ePMR network.  Mobile transmit (repeater input) is +4.4 MHz.  DDE network frequency coverage is 35.0000 MHz to 36.2375 MHz in 12.5 kHz spacing, so mobile input (mobile TX) is 39.4000 MHz to 40.6375 MHz.


35.2125 MHz NFM - French language, YL dispatcher with end of transmission "chirp" sel call bursts
35.2750 MHz NFM - Digital bursts, various duration, could be signaling or digital voice
35.2875 MHz NFM - Weak NFM voice chatter
35.3000 MHz NFM - FM carrier for 1-2 seconds, followed by series of DTMF bursts (control data?)
35.3125 MHz NFM - French language, YL dispatcher with end of transmission "chirp" sel call bursts
35.3125 MHz NFM - Long duration data bursts, MFSK
35.3375 MHz NFM - French language, YL dispatcher with end of transmission "chirp" sel call bursts
35.3500 MHz NFM - Signaling, selcal data / DTMF tones, French language comms
35.3875 MHz NFM - Signaling, selcal data / DTMF tones, French language comms
35.4000 MHz NFM - Paging, POCSAG pager signals (fair to weak)
35.4125 MHz NFM - Digital bursts, possible digital voice
35.4375 MHz NFM - French language - YL dispatcher (weak)
35.4500 MHz NFM - Signaling, selcal data / DTMF tones, French language comms
35.4625 MHz NFM - Signaling, selcal data / DTMF tones, French language comms
35.4750 MHz NFM - French language dispatch (analog FM chatter)
35.4875 MHz NFM - Weak NFM voice comms
35.5000 MHz NFM - Military wide deviation FM comms, very distorted with 150 Hz hum
35.5125 MHz NFM - French chatter, busy, selcal tone bursts, DTMF tones, "chirpy" data bursts
35.5375 MHz NFM - DTMF sel call bursts
35.5500 MHz NFM - Unique data signal, probably not part of the DDE ePMR network, could be military
35.5500 MHz NFM - Paging signals (sporadic) POCSAG paging pager signals
35.5750 MHz NFM - Signaling, selcal data / DTMF tones, French language comms
35.6000 MHz NFM - Signaling, selcal data / DTMF tones, French language comms
35.6000 MHz NFM - Military wide FM voice chatter, unknown user
35.6125 MHz NFM - Signaling, selcal data / DTMF tones, French language comms
35.6250 MHz NFM - Signaling, selcal data / DTMF tones, French language comms
35.6500 MHz NFM - Signaling, selcal data / DTMF tones, French language comms
35.7000 MHz NFM - Military comms, encrypted
35.7000 MHz NFM - Signaling, selcal data / DTMF tones, French language comms
35.7125 MHz NFM - French language chatter, same signal heard on 35.925 MHz FM
35.7125 MHz NFM - YL dispatcher talking to OMs, with end of transmission tone (single short DTMF tone)
35.7500 MHz NFM - Data bursts, long single tone bursts and analog voice activity
35.7875 MHz NFM - Digital bursts, various duration, could be signaling or digital voice
35.8000 MHz NFM - Signaling, selcal data / DTMF tones, French language comms
35.8750 MHz NFM - Multi tone selective calling (selcall) and data bursts
35.9000 MHz NFM - Wideband data, likely encrypted military radio comms (secure voice)
35.9125 MHz NFM - Signaling, selcal data / DTMF tones, French language comms
35.9250 MHz NFM - Very busy, FM voice, selcal bursts
35.9625 MHz NFM - French comms, dispatcher with end of transmission bursts
35.9750 MHz NFM - Signaling, selcal data / DTMF tones, French language comms
36.0000 MHz NFM - Data burst, followed by long single tone bursts
36.0125 MHz NFM - Signaling, selcal data / DTMF tones, French language comms
36.0625 MHz NFM - Data bursts, MDC1200-like "squawk", FM carriers off/on, French language chatter
36.1375 MHz NFM - Signaling, selcal data / DTMF tones, French language comms
36.1375 MHz NFM - French language comms, same signals heard on 35.9375 MHz for a few seconds
36.1500 MHz NFM - Signaling, selcal data / DTMF tones, French language comms

42
G8JNJ Flydog SDR Wessex
South West UK
online receiver

frequency in MHz notation kHz
27.845 MHz 27,845 27845kHz
26.960 MHz 26960 kHz 26,960
26.420 MHz 26420kHz 26175 kHz etc.

Tune in time: 1130 UTC
Tune out time: 1215 UTC


27.845 MHz FM 27845 FM - Nonstop data stream and paging signals, often on top of each other.  Dramatic fades
27.550 MHz FM 27550 FM - Narrow band POCSAG or CCIR paging pager signals, sporadic bursts
27.510 MHz FM 27510 FM - Very narrow band data bursts, similar to signals usually heard on 27.470 MHz and 27.475 MHz
27.505 MHz FM 27505 FM - Unique paging data signals, 10-12 kHz wide, various signal strengths and data burst duration
27.490 MHz FM 27490 FM - Very narrow band data bursts, sound like paging - minor QRM from 27.485 MHz AM freeband CB
27.475 MHz FM 27475 FM - 3-4 kHz wide FSK data bursts, sounds like pager signals - often heard on/around these frequencies
27.360 MHz FM 27360 FM - Paging signals, usual signal heard on this frequency
27.235 MHz FM 27235 FM - Packet radio AX.25 packet signals - CB Radio Channel 24 FM
27.230 MHz FM 27230 FM - Packet radio AX.25 packet radio signals - CB Radio Channel 24R 24P
26.995 MHz FM 26995 FM - 4 kHz wide FSK data signals, 26.994 MHz and 26.996 MHz offset frequencies
26.995 MHz FM 26995 FM - 6 kHz wide MFSK bursts, variable duration bursts, with 26.995 MHz LSB voice comms on top
26.935 MHz FM 26935 FM - 5 kHz wide MFSK bursts, see 26905, 26915, 26925, 30155
26.935 MHz FM 26935 FM - Narrow band pager signals - paging bursts 26,935 26935kHz
26.925 MHz FM 26925 FM - 5 kHz wide MFSK bursts, very similar to signals noted on 30.155 MHz, 26.915 MHz and 26.905 MHz
26.915 MHz FM 26915 FM - 5 kHz wide MFSK bursts, see 26.905MHz, 26.925MHz
26.905 MHz FM 26905 FM - 5 kHz wide MFSK bursts, see also: 26915kHz, 26925 kHz, 30,155 MHz
26.900 MHz FM 26900 FM - Paging frequency, very active with various bandwidth signals 26.9MHz 26,900
26.845 MHz FM 26845 FM - Narrow band paging signals, sporadic - possible offset frequency for 26.850 MHz
26.755 MHz FM 26755 FM - Paging signals, not nearly as frequent as the signals on 26.600, 26.650, 26.695 or 26.745
26.745 MHz FM 26745 FM - Paging signals, multiple signals at once - UK hospital pagers
26.695 MHz FM 26695 FM - Paging signals, multiple signals at once - UK hospital pagers
26.650 MHz FM 26650 FM - Narrow deviation POCSAG or "POCSAG like" signals - with FM carrier start of burst
26.650 MHz FM 26650 FM - 6.5 kHz wide BW CCIR multi tone paging signals
26.605 MHz FM 26605 FM - Paging signals, UK on site pagers hospital paging, active
26.600 MHz FM 26600 FM - On site paging signals - CCIR multi tone paging FSK or narrow deviation POCSAG
26.350 MHz FM 26350 FM - 5-6 kHz wide MFSK bursts, 1.5 to 2 second duration
26.200 MHz FM 26200 FM - Paging systems, with idle FM carrier

Tune in time: 1245 UTC
Tune out time: 1255 UTC


27.975 MHz FM 27975 FM - Data bursts, 6-7 kHz wide signal, with FM carrier "pilot tone" start of transmission
27.845 MHz FM 27845 FM - Paging signals on frequency severe QRM from OTHR (70-80 kHz BW, possible PLUTO II OTHR)
27.475 MHz FM 27475 FM - 3-4 kHz wide FSK data bursts, sounds like pager signals
27.470 MHz FM 27470 FM - 3-4 kHz wide FSK data bursts, very similar to signals on 27,475
27.235 MHz FM 27235 FM - Packet radio on CB radio AX.25 - CB Radio Channel 24 FM CB CH24 FM
27.195 MHz FM 27195 FM - FM carrier signal, possible OOK on-off keying
27.195 MHz FM 27195 FM - MFSK data signal, fading up out of the noise and then back down, 4 kHz bandwidth
27.120 MHz FM 27120 FM - POCSAG like multi-tone paging signals - with QRM from CB radio chatter
26.755 MHz FM 26755 FM - Paging signals, likely on site hospital paging systems, with FM CB radio QRM
26.750 MHz FM 26750 FM - 5 kHz - 6 kHz BW MFSK data bursts, similar to signals noted on 26.350 MHz and 26.450 MHz
26.650 MHz FM 26650 FM - Narrow deviation POCSAG or "POCSAG like" signals - with FM carrier start of burst
26.650 MHz FM 26650 FM - 6.5 kHz wide BW CCIR multi tone paging signals
26.605 MHz FM 26605 FM - Multi tone paging signals mixing with the signals from 26.6 MHz
26.600 MHz FM 26600 FM - On site paging signals - CCIR multi tone paging FSK or narrow deviation POCSAG

43
Via G8JNJ SDR
Tune in time
1135 UTC

26.600 MHz FM 26600 kHz FM - Wider band POCSAG-like paging signals, CCIR multi-tone 26.6 MHz
26.605 MHz FM 26605 kHz FM - Paging signals, probably UK based, known frequency (see also: 26.610 MHz 26.630 MHz, etc.)
26.610 MHz FM 26610 kHz FM - Narrowband FSK signal - not fishnet beacon (radio buoy)
26.635 MHz FM 26635 kHz FM - Paging signals - multi-tone pager CCIR polytone
26.635 MHz FM 26635 kHz FM - Paging data bursts, MFSK
26.650 MHz FM 26650 kHz FM - POCSAG or POCSAG like paging signals, various bandwidth signals noted 26.65 MHz
26.695 MHz FM 26695 kHz FM - POCSAG pager - narrow deviation / low data rate - nonstop - UK hospital paging frequency
26.695 MHz FM 26695 kHz FM - MFSK data bursts, 6.5 kHz bandwidth, on top of the pager signals
26.695 MHz FM 26695 kHz FM - CCIR multi tone paging signals, mixing with the non stop pager signals on frequency
26.700 MHz FM 26700 kHz FM - Paging signals, sporadic compared to the nonstop signals on 26695 and 26745
26.702 MHz FM 26702 kHz FM - Idle signal, off-frequency FM carrier - probably another idle signal
26.705 MHz FM 26705 kHz FM - CCIR multi-tone frequency paging pagers, very busy
26.705 MHz FM 26705 kHz FM - Idle signal, off-frequency FM carrier, pretty wide (3-4 kHz) without modulation
26.735 MHz FM 26735 kHz FM - MFSK data signals pager paging 26.735MHz
26.745 MHz FM 26745 kHz FM - POCSAG pager - narrow deviation / low data rate - nonstop - UK hospital paging frequency
26.745 MHz FM 26745 kHz FM - Multitone paging 
26.750 MHz FM 26750 kHz FM - MFSK data signals, bursts with FM carrier lead-in tone, 5-6 kHz wide, 1.5 second duration
26.785 MHz FM 26785 kHz FM - Various bandwidth pager signals, UK hospital on-site paging? 
26.815 MHz FM 26815 kHz FM - MFSK and FSK paging signals, CCIR and "POCSAG lite"
26.835 MHz FM 26835 kHz FM - MFSK and FSK bursts, like 26.9 MHz, all sorts of signals on top of each other
26.850 MHz FM 26850 kHz FM - FSK data bursts, active paging signal - not fishnet beacons
26.865 MHz FM 26865 kHz FM - Various pager signals, UK and European signals
26.900 MHz FM 26900 kHz FM - Paging signals, very active frequency, sounds like narrowband POCSAG pager
26.900 MHz FM 26900 kHz FM - Various bandwidth, 10 kHz, 6.5 kHz - nonstop signals
26.950 MHz FM 26950 kHz FM - Narrowband MFSK data signals, similar signals noted on 26.750 MHz and 26.850 MHz
26.995 MHz FM 26995 kHz FM - Multi-tone data bursts, 5-6 kHz bandwidth, tone-modulated FM so F3D emission 6K00F3D 6K00F2D
27.045 MHz FM 27045 kHz FM - Narrowband MFSK data bursts, similar to other RCRS and RC modeling datalink telemetry signals
27.080 MHz FM 27080 kHz FM - MFSK data bursts, previously logged on this frequency 27,080 MHz CB Channel 11R 11P
27.235 MHz FM 27235 kHz FM - CB Radio Channel 24, AX.25 packet signals on frequency
27.255 MHz FM 27255 kHz FM - CB Radio Channel 23, FSK data signals, 5.5 kHz bandwidth, also 6 kHz and 7.5 kHz MFSK 
27.300 MHz FM 27300 kHz FM - Very busy paging signals, 27.3 MHz, in between 27.295 MHz and 27.305 MHz CB channels 30R
27.300 MHz FM 27300 kHz FM - CCIR multitone paging signals, narrow band and regular BW signals, very strong signals
27.350 MHz FM 27350 kHz FM - Multi-tone, POCSAG and "sounds like POCSAG" signals 27.35 MHz
27.360 MHz FM 27360 kHz FM - 8 kHz wide CCIR / POCSAG (narrow deviation) pager signals 27,360 CB CH 36R channel 36P
27.360 MHz FM 27360 kHz FM - 5 kHz bandwidth paging signals, very busy like 26900, 27300, 27350
27.450 MHz FM 27450 kHz FM - Numerous FM carriers on/near frequency - idle signals
27.450 MHz FM 27450 kHz FM - 5 kHz BW MFSK bursts, on top of FM carriers
27.450 MHz FM 27450 kHz FM - Various 8 kHz - 9 kHz wide POCSAG (or sounds like POCSAG) signals on frequency
27.470 MHz FM 27470 kHz FM - Narrow band data bursts, similar signals noted on 27.253 MHz, 27.007 MHz, other offset freqs
27.475 MHz FM 27475 kHz FM - Paging signals, 5 kHz bandwidth, possible Italy, Switzerland or Spain
27.505 MHz FM 27505 kHz FM - CCIR multi-tone paging signals, including possible offset frequency 27.506 MHz
27.505 MHz FM 27505 kHz FM - Wide band MFSK (10-12 kHz wide) paging signals, very active at points
27.510 MHz FM 27510 kHz FM - Narrow and wide band POCSAG-like signals, sporadic
27.530 MHz FM 27530 kHz FM - Narrowband data bursts, similar to those on 27.47 MHz, mixing with FM voice on frequency
27.550 MHz FM 27550 kHz FM - Paging signals, heavy QRM from 27.555 MHz USB and other freeband CB frequencies
27.600 MHz FM 27600 kHz FM - UNID source pager, similar to 27550 kHz
27.750 MHz FM 27750 kHz FM - Paging signals, sporadic (with heavy QRM from UK FM CB 27.751.25 MHz FM)
27.845 MHz FM 27845 kHz FM - Various paging signals active on frequency

44
Via G8JNJ Online SDR (located in SW UK)

Band is open to France, Italy and other locations (the 35 MHz LMR / eLMR PMR DDE analog voice / digital voice trunking network is very active - 35.0000 MHz to 36.2375 MHz 12.5 kHz steps, input +4.4 MHz so 39.4000 MHz to 40.6375 MHz). 

30 July 2024
Tune in time: 1100 UTC

Italy VHF 43MHz band, 24 channels, VHF low band 43MHz.  43.3 MHz to 43.5875MHz 43,3000 MHz 43,5875 MHz 12,5 kHz spacing channels

Data signals on all 24 channels, many frequencies with multiple signals at once.  43.400 MHz, 43.450 MHz, 43.5125 MHz and others seem to be the "usual suspects".  This is after only a few minutes of monitoring.

45
Tune in time:

1040 UTC

26.200 MHz FM 26,200 kHz FM - Narrow and wider band paging signals (FM carrier signal on frequency)
26.200 MHz FM 26,200 kHz FM - Data burst with sync tone (carrier)
26.220 MHz FM 26,220 kHz FM - POCSAG or POCSAG like paging signals
26.350 MHz FM 26,350 kHz FM - On-site paging systems, pagers - sounds like POCSAG, possibly CCIR multitone (narrowband)
26.350 MHz FM 26,350 kHz FM - On-site paging systems, with FM carrier signal during idle periods (3-4 different carriers noted)
26.500 MHz FM 26.500 kHz FM - On-site radiopaging, with FM carrier signal during idle periods
26.600 MHz FM 26,600 kHz FM - Multi tone paging signals - pager network 26.6 MHz 26600 FM
26.635 MHz FM 26,635 kHz FM - Narrowband multi-tone paging with carrier tone during idle periods
26.635 MHz FM 26,635 kHz FM - Data bursts, MFSK, center frequencies 26.635.3 and 26.636 MHz
26.635 MHz FM 26,635 kHz FM - CCIR multitone paging, mixing with the other data and pager signals on frequency
26.650 MHz FM 26,650 kHz FM - Multi tone paging signals, various bandwidths (sounds like POCSAG)
26.695 MHz FM 26,695 kHz FM - Nonstop POCSAG (or sounds like POCSAG) CCIR multitone paging, various bandwidths
26.705 MHz FM 26,705 kHz FM - POCSAG paging (9-10 kHz BW), CCIR multitone paging, other data bursts, very busy
26.745 MHz FM 26,745 kHz FM - Nonstop paging signals, various bandwidths, similar to 26695 and 26705
26.885 MHz FM 26,885 kHz FM - Multi-tone data bursts, 8-9 kHz bandwidth, possibly paging systems
26.905 MHz FM 26,905 kHz FM - Very narrowband MFSK data signals, likely data links 
26.915 MHz FM 26,915 kHz FM - Very narrowband MFSK data signals, likely data links
26.925 MHz FM 26,925 kHz FM - Very narrowband MFSK data signals, likely data links
26.935 MHz FM 26,935 kHz FM - Data bursts, narrowband, with FM CB radio signals on frequency
26.995 MHz FM 26,995 kHz FM - Multi tone paging signals, approx 8 kHz bandwidth with MFSK "lead in" burst
27.000 MHz FM 27,000 kHz FM - Narrowband data bursts (3-4 kHz)
27.045 MHz FM 27,045 kHz FM - MFSK data signals, 4.5 kHz bandwidth, various signal strengths
27.470 MHz FM 27.470 kHz FM - Narrow band (3-4 kHz bandwidth) data bursts, sound like POCSAG or CCIR
27.505 MHz FM 27,505 kHz FM - Nearly constant paging signals, not POCSAG, 10-12 kHz wide
27.505 MHz FM 27,505 kHz FM - Various data modes in use at once, 8-13 kHz bandwidth
27.510 MHz FM 27,510 kHz FM - Multi-tone pager signals, very similar to the signals on 26.645 MHz and 26.695 MHz and 26.745 MHz
27.510 MHz FM 27,510 kHz FM - Constant "idle" paging signal noted at 1130 UTC, 6.5 kHz bandwidth
27.750 MHz FM 27.750 kHz FM - Narrowband data bursts, similar to those noted on 26.905 MHz and other 26MHz frequencies
27.845 MHz FM 27,845 kHz FM - Pager signals, sporadic signals - previously noted activity on/hear 27.845 MHz 27.847 MHz 27.8475 MHz
27.850 MHz FM 27,850 kHz FM - Similar to 27845 27850 27855 bandwidth ballpark

Tune in time:

1040 UTC

26.200 MHz FM 26,200 kHz FM - Narrow and wider band paging signals (FM carrier signal on frequency)
26.200 MHz FM 26,200 kHz FM - Data burst with sync tone (carrier)
26.220 MHz FM 26,220 kHz FM - POCSAG or POCSAG like paging signals
26.350 MHz FM 26,350 kHz FM - On-site paging systems, pagers - sounds like POCSAG, possibly CCIR multitone (narrowband)
26.350 MHz FM 26,350 kHz FM - On-site paging systems, with FM carrier signal during idle periods (3-4 different carriers noted)
26.500 MHz FM 26.500 kHz FM - On-site radiopaging, with FM carrier signal during idle periods
26.600 MHz FM 26,600 kHz FM - Multi tone paging signals - pager network 26.6 MHz 26600 FM
26.635 MHz FM 26,635 kHz FM - Narrowband multi-tone paging with carrier tone during idle periods
26.635 MHz FM 26,635 kHz FM - Data bursts, MFSK, center frequencies 26.635.3 and 26.636 MHz
26.635 MHz FM 26,635 kHz FM - CCIR multitone paging, mixing with the other data and pager signals on frequency
26.650 MHz FM 26,650 kHz FM - Multi tone paging signals, various bandwidths (sounds like POCSAG)
26.695 MHz FM 26,695 kHz FM - Nonstop POCSAG (or sounds like POCSAG) CCIR multitone paging, various bandwidths
26.705 MHz FM 26,705 kHz FM - POCSAG paging (9-10 kHz BW), CCIR multitone paging, other data bursts, very busy
26.745 MHz FM 26,745 kHz FM - Nonstop paging signals, various bandwidths, similar to 26695 and 26705
26.885 MHz FM 26,885 kHz FM - Multi-tone data bursts, 8-9 kHz bandwidth, possibly paging systems
26.905 MHz FM 26,905 kHz FM - Very narrowband MFSK data signals, likely data links 
26.915 MHz FM 26,915 kHz FM - Very narrowband MFSK data signals, likely data links
26.925 MHz FM 26,925 kHz FM - Very narrowband MFSK data signals, likely data links
26.935 MHz FM 26,935 kHz FM - Data bursts, narrowband, with FM CB radio signals on frequency
26.995 MHz FM 26,995 kHz FM - Multi tone paging signals, approx 8 kHz bandwidth with MFSK "lead in" burst
27.000 MHz FM 27,000 kHz FM - Narrowband data bursts (3-4 kHz)
27.045 MHz FM 27,045 kHz FM - MFSK data signals, 4.5 kHz bandwidth, various signal strengths
27.470 MHz FM 27.470 kHz FM - Narrow band (3-4 kHz bandwidth) data bursts, sound like POCSAG or CCIR
27.475 MHz FM 27,475 kHz FM - Narrow band (3-4 kHz bandwidth) data bursts, sound like POCSAG or CCIR
27.505 MHz FM 27,505 kHz FM - Nearly constant paging signals, not POCSAG, 10-12 kHz wide
27.505 MHz FM 27,505 kHz FM - Various data modes in use at once, 8-13 kHz bandwidth
27.510 MHz FM 27,510 kHz FM - Multi-tone pager signals, very similar to the signals on 26.645 MHz and 26.695 MHz and 26.745 MHz
27.510 MHz FM 27,510 kHz FM - Constant "idle" paging signal noted at 1130 UTC, 6.5 kHz bandwidth
27.750 MHz FM 27.750 kHz FM - Narrowband data bursts, similar to those noted on 26.905 MHz and other 26MHz frequencies
27.845 MHz FM 27,845 kHz FM - Pager signals, sporadic signals - previously noted activity on/hear 27.845 MHz 27.847 MHz 27.8475 MHz
27.850 MHz FM 27,850 kHz FM - Similar to 27845 27850 27855 bandwidth ballpark

Tune in time:

1300 UTC:

26.200 MHz FM 26,200 kHz FM - Various bandwidth paging signals, including FM carrier "preamble", 14 kHz BW (widest)
26.500 MHz FM 26,500 kHz FM - FM carrier idle signal on frequency, paging signals on frequency on top of carrier
26.635 MHz FM 26,635 kHz FM - Narrowband data signal on frequency, FM carriers, nonstop
26.645 MHz FM 26,645 kHz FM - Hospital paging on site hospital pagers UK - POCSAG - very active
26.695 MHz FM 26,695 kHz FM - Hospital paging on site hospital pagers UK - POCSAG - very active
26.695 MHz FM 26,695 kHz FM - Various paging data modes FSK MFSK CCIR signals on top of each other
26.705 MHz FM 26,705 kHz FM - Hospital paging on site hospital pagers UK - sporadic activity
26.745 MHz FM 26,745 kHz FM - Hospital paging on site hospital pagers UK - POCSAG - very active
26.755 MHz FM 26,755 kHz FM - Sporadic paging signals, 8 kHz, 10 kHz and 12+ kHz BW
26.900 MHz FM 26,900 kHz FM - Paging signals, various modes, often several signals on top of each other
27.505 MHz FM 27,505 kHz FM - Nearly constant paging signals, not POCSAG, 10-12 kHz wide
27.760 MHz FM 27,760 kHz FM - Two subcarriers of FSK data signals, previously noted on this frequency, 8-10 kHz bandwidth
27.845 MHz FM 27,845 kHz FM - Pager signals, likely CCIR multitone paging protocol MFSK FSK signal



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