Topics

76

Peskies / 6666 kHz USB Spanish Language Comms 1350 UTC 06/06/2024 [Via G8JNJ SDR]

« on: June 06, 2024, 1352 UTC »

6666 kHz USB 6666kHz USB 6.666 MHz USB.

Listening via the UK based SDR (G8JNJ SDR).  Spanish speaking comms, S7 to S9+10dB very nice signals

77

10/11 meters / 26-30 MHz 27MHz 11M CB Logs [G8JNJ SDR] 1130 UTC 5 June 2024

« on: June 05, 2024, 1221 UTC »

1130 UTC

25.615 MHz LSB - UNID language freeband CB radio freeband chatter, weak
25.625 MHz LSB - UNID language freeband CB radio freeband chatter, weak
25.650 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady
25.665 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady
25.725 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady
25.745 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady
25.835 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady
25.995 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady
26.005 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady
26.025 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady
26.050 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady
26.055 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady
26.060 MHz FM - Russian taxi cab dispatch, very dramatic fading
26.065 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady
26.085 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady
26.100 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady
26.115 MHz AM - Portuguese language chatter, UNID
26.115 MHz FM - Russian LMR - taxi cab radio dispatch
26.145 MHz FM - FSK data bursts
26.185 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady
26.195 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady
26.200 MHz FM - POCSAG paging signals
26.205 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady
26.220 MHz FM - POCSAG paging signals
26.235 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady
26.255 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady
26.260 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady
26.300 MHz FM - POCSAG pager signals POCSAG paging - various bandwidths
26.350 MHz FM - POCSAG paging signals POCSAG paging data
26.525 MHz LSB - Spanish language chatter, good signals
26.535 MHz FM - Russian taxi cab dispatcher YL Olga
26.600 MHz FM - POCSAG paging signals POCSAG paging data
26.605 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady
26.605 MHz FM - POCSAG paging signals POCSAG paging data
26.625 MHz FM - German CB chatter, QRM from Russian taxi dispatch
26.625 MHz FM - Russian taxi cab LMR PMR radio dispatch
26.645 MHz FM - POCSAG paging signals POCSAG paging data
26.745 MHz FM - POCSAG paging signals, basically nonstop
26.785 MHz FM - POCSAG paging signals
26.785 MHz FM - CB radio chatter, UNID language, heavy fading
26.800 MHz FM - Data bursts, narrowband (5-6 kHz bandwidth)
26.855 MHz FM - CB radio chatter, German language
26.865 MHz FM - CB radio chatter, internet gateway (remote linked) to 26.935 MHz FM and other frequencies?
26.900 MHz FM - POCSAG paging signals, very strong / busy frequency
26.945 MHz FM - POCSAG data signals - paging
26.945 MHz FM - Data bursts, 2w datalink frequency
26.950 MHz FM - POCSAG paging signals, other data bursts
26.955 MHz FM - Paging, narrowband
26.960 MHz FM - Data bursts, 2w datalink frequency with FM voice underneath
26.960 MHz FM - Polish CB radio comms
26.965 MHz FM - Very busy
26.970 MHz FM - Russian language, possible repeater??
26.975 MHz AM - Italian ??
26.990 MHz FM - MFSK data bursts
26.995 MHz FM - Various data modes, narrowband
26.995 MHz FM - POCSAG paging!
27.005 MHz AM - Very busy frequency, sounds like Italian and Spanish
27.030 MHz FM
27.050 MHz FM - Weak Russian language comms noted, heavy QRM from 27055
27.055 MHz FM -
27.060 MHz FM - Data bursts, similar to those heard on 26.945 MHz and 26.960 MHz (and 27.080 MHz)
27.070 MHz FM
27.075 MHz FM - Extremely busy frequency
27.075 MHz USB - SSB comms, severe interference from AM and FM comms on/near this frequency
27.080 MHz FM - Data bursts, previously logged
27.085 MHz FM - QRM land
27.095 MHz USB - Spanish language comms, heavy QRM
27.100 MHz FM - Repeater being keyed up, likely simplex repeater 27100 FM 27,100 MHz simplex repeater
27.200 MHz FM - Numerous signals on top of each other
27.200 MHz USB - German language comms
27.205 MHz FM - Simplex repeater, Sweden with multi-tone (DTMF) and noise toys
27.300 MHz FM - POCSAG paging pager
27.360 MHz FM - POCSAG paging pager
27.505 MHz FM - Paging signals - various modes and bandwidth, up to 10-15 kHz
27.525 MHz FM - Russian taxi cab dispatch Russian LMR taxi controller lady with SSB QRM
27.650 MHz FM - POCSAG paging signals, sporadic
27.651 MHz FM - UK FM CB comms, fair to weak UK FM CB channel 6 freq 27.65125 MHz FM
27.671 MHz FM - UK FM CB chatter, good signals UK FM CB channel 8 freq 27.67125MHz FM
27.691 MHz FM - UK FM CB chatter, QRM from OTH Radar UK FM CB CH10 freq 27.69125 MHz FM
27.700 MHz USB - SSTV, heavy QRM from UK FM CB on 27.701MHz FM
27.701 MHz FM - UK FM CB chatter, UK FM CB channel 11 freq 27.70125 MHz FM with 27.700MHz USB QRM
27.781 MHz FM - UK FM CB, busy, UK FM CB channel 19 freq 27.78125 MHz FM
27.810 MHz FM - Datalink, narrowband signals
27.811 MHz FM - UK FM CB comms, UK FM CB Channel 22 frequency 27.81125 MHz FM
27.815 MHz FM
27.825 MHz USB - Italian language comms, significant fading
27.831 MHz FM - UK FM CB channel 24 frequency 27.83125 MHz FM
27.845 MHz FM - POCSAG paging signals
27.851 MHz FM - UK FM CB radio comms, CH26, freq 27.85125 MHz FM
27.861 MHz FM - UK FM CB, sporadic activity channel 27 frequency 27.861.25 MHz FM
27.875 MHz FM - Russian LMR taxi cab comms YL dispatcher taxi controller
27.895 MHz FM - Russian taxi cab dispatcher, YL dispatcher
27.900 MHz USB - Italian language chatter, good signals
27.901 MHz FM - UK FM CB, active, channel 31, frequency 27.90125 MHz FM heavy QRM
27.905 MHz FM - Russian taxi cab dispatch, LMR PMR Russia taxi
27.915 MHz FM - Russian taxi cab dispatch Russia YL Olga
27.931 MHz FM - UK FM CB radio comms, UK FM 27/81 CB channel 34
27.955 MHz FM - Russian taxi cab dispatch
27.961 MHz FM - UK FM CB channel 37, sporadic activity 27.96125 MHz FM
27.965 MHz AM - Italian language comms, possibly truckers?
27.971 MHz FM - UK FM CB channel 38, busy, frequency 27.97125 MHz FM
27.975 MHz FM - Russian taxi cab dispatcher YL dispatch lady Olga taxi controllers
27.995 MHz USB - French language freeband comms

78

10/11 meters / 26-30 MHz Paging Signals Received G8JNJ SDR 4 June 2024

« on: June 04, 2024, 1917 UTC »

26.200 MHz - POCSAG
26.220 MHz - Paging signals - POCSAG, busy
26.300 MHz - POCSAG paging signals
26.450 MHz - POCSAG bursts
26.600 MHz - POCSAG paging signals
26.605 MHz - Paging signals, POCSAG, various bandwidths noted
26.645 MHz - Paging signals, basically nonstop
26.655 MHz - Paging signals POCSAG Paging signals, basically nonstop
26.650 MHz - Paging signals, very busy POCSAGs, POCSAG
26.670 MHz - POCSAG paging signals, UNID source
26.695 MHz - POCSAG signals
26.700 MHz - POCSAG paging signals, including very narrow band
26.705 MHz - Paging signals, basically nonstop
26.745 MHz - Nonstop paging signals (POCSAG)
26.750 MHz - Narrow and wide POCSAG signals
26.755 MHz - Paging signals, POCSAG mode
26.785 MHz - POCSAG signals
26.815 MHz - POCSAG signals
26.850 MHz - POCSAG paging signals
26.865 MHz - Paging signals, heavy QRM from 26MHz FM CB radio chatter
26.900 MHz - POCSAG paging signals
26.925 MHz - Data bursts
26.945 MHz - Data bursts, very busy
26.950 MHz - Narrowband data signals, POCSAG
26.950 MHz - Pager signals
26.955 MHz - Paging signals
26.990 MHz - MFSK data bursts, 4-5 kHz bandwidth
26.995 MHz - Audio-frequency shift keying AM signal data bursts
26.995 MHz - FSK data bursts
27.045 MHz - RCRS (FCC Part 95C) data bursts, possibly U.S. spec equipment
27.045 MHz - On-off keying
27.080 MHz - Data bursts, similar to signals noted on this frequency previously
27.095 MHz - Data bursts, also FM voice signals on frequency
27.140 MHz - FSK bursts, 4-5 kHz wide, pretty frequent
27.195 MHz - Various data modes, data signals
27.210 MHz - Narrowband data signal
27.250 MHz - POCSAG paging signals, frequent signals
27.300 MHz - POCSAG paging
27.350 MHz - POCSAG paging
27.360 MHz - POCSAG paging, well-known use of this frequency
27.450 MHz - Data links, telemetry and paging, often with FM "idle" signal (carrier when idle)
27.470 MHz - POCSAG signals, narrowband, very sporadic
27.505 MHz - Various paging modes, narrow and wide band POCSAG
27.845 MHz - POCSAG paging signals, some off-frequency 27.847 MHz or 27.848 MHz
27.850 MHz - POCSAG paging signals
27.940 MHz - Data stream signal with POCSAG signals on top

79

10/11 meters / 27.940 MHz Data Stream + Paging 27940 kHz 27.94MHz Data [G8JNJ SDR] 4 June 2024

« on: June 04, 2024, 1420 UTC »

Tune in time: 1415 UTC.  Seems like the signal is fading out by the time I tuned in. 

Bandwidth approx 6 kHz, seems like a MFSK data signal with a "carrier" signal on 27940 kHz... with "pulsing" sound in AM, FM and SSB.  POCSAG paging signals on top of the data signal.  Unlike the data signal, the POCSAG pager signals are not nonstop. 

Some very strong FM CB radio signals noted at 1418 UTC.  UK FM CB comms, UK FM CB Channel 35, frequency 27941 FM 27.94125 MHz FM 27.941.25 MHz FM.  Severe QRM from the pager signals and data link on 27.940 MHz. 

Aside from being used for land mobile business type comms LMR PMR PLMR taxi cab radio dispatch taxi controllers out of Russia and elsewhere, 27.94 MHz is also one of the 27MHz Australian marine band frequencies.   The Australian 27 MHz marine band is AM mode A3 emission A3E AM radiotelephone maritime mobile service ship to ship ship to shore 

27.680 MHz   Commercial, Calling ship-ship, shore-shore - 27MHz marine channel 68 CH68
27.720 MHz   Pro. fishing, Calling ship-ship , shore-shore CH72
27.820 MHz   Pro. fishing, Calling ship-ship , shore-shore 27 MHz AU marine radio channel 82 CH82
27.860 MHz   Distress, Safety & Calling (supp. to 27.880) CH86
27.880 MHz   Distress, Safety & Calling Emergency Channel 27.88MHz - 27MHz marine channel 88 CH88
27.900 MHz   Non-commercial, Calling & ship-shore 27.9 MHz channel 90 CH90
27.910 MHz   Non-commercial, Calling & ship-shore 27.91 MHz CH91 Channel 91
27.940 MHz   Non-commercial, Calling & ship-shore/ship 27.94MHz 27,940 kHz 27940 kHz channel 94 CH94
27.960 MHz   Non-commercial, Calling & ship-ship 27.96MHz 27 MHz marine channel 96 CH96
27.980 MHz   Rescue etc., Calling & ship-ship, shore-shore 27.98 MHz - 27MHz marine radio channel 98 CH98

Those are the official channels, with private marinas, SAR, sea rescue, etc. organizations often using additional private channels in the 27.500 MHz to 28 MHz range (eg. 27.70 MHz, 27.75 MHz, 27.76 MHz, 27.80 MHz, 27.84 MHz, 27.85 MHz, etc.)

80

10/11 meters / 27751 FM 27.75125 MHz FM Irish Church Service 1924 UTC 31 May 2024 [G8JNJ SDR]

« on: May 31, 2024, 1931 UTC »

Listening to CADS / WPAS parish radio broadcast on UK FM CB channel 16, frequency 27751 kHz FM 27751.25 NFM. 

Strong audio, some very minor fades.  SIO 444.  S9 on peaks, mostly hovering around S7-S8. 

At 1925 UTC, you can clearly hear the church background audio, people talking, a sporadic cough...other background chatter.   

Some minor QRM from SSB chatter on 27.745 MHz USB as well some weak SSB chatter on 27.755 MHz LSB.  27.75125 MHz FM is the strongest signal by an order of magnitude though.

Substantial fade down to S5 at 1927 UTC...followed by a nice jump up to S9+10dB for a few moments.  Full quieting FM signal, very good audio especially considering this is 2 or 2.5 kHz deviation! 

CADS / WPAS channel LW16 FM or UK FM CB 27/81 FM CB channel 16. 

Bandwidth at highest FM deviation around 8 kHz or 9 kHz or so.  Can safely call this 10 kHz bandwidth. 

81

10/11 meters / 29.875 MHz FM 29875 kHz FM Fishing Fleet Chatter (Asian) 1225 UTC 31 May 2024

« on: May 31, 2024, 1231 UTC »

Via G8JNJ SDR receiver.  29875 FM [CSQ].  Carrier squelch, no CTCSS (PL) or DCS (DPL) in use.  CSQ. 

Very strong signals, sounds like Japanese language chatter on 29.875MHz.  One of the more active Asian fishery frequencies, 29.875 is Channel 100 on the 480 channel 27.500 MHz - 39.475 MHz [25 kHz steps, sequential channel numbering) radios.  29.825 MHz, 29.900 MHz, 29.925 MHz, 30.025 MHz, 29.775 MHz, 29.750 MHz and many others are also very popular.  29.825 MHz and 29.875 MHz are both in the "top 10" both locally for me here on the East Coast of the USA and via remote receivers located in the UK and mainland Europe.  One of the characteristics of these systems is the use of 25 kHz or 12.5 kHz spacing frequencies and carrier squelch. 

82

10/11 meters / 26-30 MHz Paging Signals Received At Different Times [G8JNJ SDR] 31 May 2024

« on: May 31, 2024, 1117 UTC »

UK based SDR receiver

Logs

Time Frame:  1030 UTC / 1130 local time to 1115 UTC / 1215 local time

26.200 MHz 26200 kHz 26,200 kHz - POCSAG bursts first noted at 1110 UTC
26.350 MHz 26350 kHz 26,350 kHz - POCSAG paging signals, heavy QRM from CODAR, very active as time went on
26.670 MHz 26670 kHz 26.670 kHz - POCSAG paging signals noted around 1050 UTC
26.695 MHz 26695 kHz 26,695 kHz - Busy with POCSAG
26.745 MHz 26745 kHz 26,745 kHz - POCSAG paging signals appearing around 1100 UTC
26.750 MHz 26750 kHz 26,750 kHz - POCSAG paging, narrowband (sporadic)
26.755 MHz 26755 kHz 26,755 kHz - POCSAG signals - sporadic activity
26.800 MHz 26800 kHz 26,800 kHz - Sporadic POCSAG bursts, mostly 6-7 kHz wide BW signals
26.900 MHz 26900 kHz 26,900 kHz - POCSAG pager signals - 26.9 MHz is often very active, first noted around 1055 or 1100 UTC
26.950 MHz 26950 kHz 26,950 kHz - Data bursts, 26.95MHz 26950kHz data link
27.080 MHz 27080 kHz 27,080 kHz - Data bursts, previously noted on this freq 27080kHz, UNID source
27.255 MHz 27255 kHz 27,255 kHz - Data bursts and narrowband POCSAG paging (RCRS frequency in USA, 25w power limit)
27.300 MHz 27300 kHz 27,300 kHz - Pager signals - POCSAG - first noted at 1105 UTC
27.350 MHz 27350 kHz 27,350 kHz - Pager signals POCSAG paging, similar to 27.300 MHz, 27.360 MHz, 26.900 MHz, etc.
27.360 MHz 27360 kHz 27,360 kHz - POCSAG signals, first started fading up after 1110 UTC
27.450 MHz 27450 kHz 27,450 kHz - Data links and paging, first noted at 1115 UTC (weak at that time)
27.505 MHz 27505 kHz 27,505 kHz - Nearly constant paging signals - POCSAG - 12.5 kHz bandwidth, 14-15 kHz bandwidth signals
27.550 MHz 27550 kHz 27,550 kHz - POCSAG paging signals - sporadic activity
27.650 MHz 27650 kHz 27,650 kHz - POCSAG pager bursts, sporadic
27.760 MHz 27760 kHz 27,760 kHz - Data link, approx 10 kHz wide - MFSK signals  (weak at 1115 UTC)
27.845 MHz 27845 kHz 27,845 kHz - POCSAG paging signals, various bandwidth signals - 5-6 kHz, 8-10 kHz bandwidth
27.847 MHz 27847 kHz 27,847 kHz - POCSAG paging signals, offset frequency 27.848MHz 27.8475 MHz
27.850 MHz 27850 kHz 27,850 kHz - POCSAG paging signals, similar to 27.845 MHz


Time Frame:  1400 UTC / 1500 local time to 1430 UTC / 1530 local time

26.220 MHz 26220 kHz 26,220 kHz - Paging signals (narrowband, 5-6 kHz BW) and wide band POCSAG signals
26.300 MHz 26300 kHz 26,300 kHz - Data bursts, some POCSAG and other non-POCSAG signals
26.350 MHz 26350 kHz 26,350 kHz - Sporadic paging noted at 1427 UTC.  FM carrier on frequency underneath paging signals
26.500 MHz 26500 kHz 26,500 kHz - POCSAG pager signals, sporadic signals
26.605 MHz 26605 kHz 26,605 kHz - POCSAG signals, first noted at 1417 UTC - wideband POCSAG noted here
26.615 MHz 26615 kHz 26,615 kHz - Data bursts, weak - some CB radio QRM in FM and AM modes
26.650 MHz 26650 kHz 26,650 kHz - Paging signals, POCSAG (various bandwidths noted) - weak, but there
26.670 MHz 26670 kHz 26,670 kHz - Pager signals - weak, sporadic use
26.705 MHz 26705 kHz 26,705 kHz - Unusual data signals, POCSAG bursts
26.735 MHz 26735 kHz 26,735 kHz - Paging signals noted at 1430 UTC
26.745 MHz 26745 kHz 26,745 kHz - POCSAG signals, signals on top of each other at points
26.755 MHz 26755 kHz 26,755 kHz - POCSAG bursts, sporadic
26.785 MHz 26785 kHz 26,785 kHz - POCSAG bursts, various signal strengths noted (some FM CB radio QRM)
26.815 MHz 26815 kHz 26,815 kHz - POCSAG pager signals, active, similar to 26.900 MHz and 26.835 MHz
26.835 MHz 26835 kHz 26,835 kHz - POCSAG bursts, active frequency (some FM CB radio QRM)
26.885 MHz 26885 kHz 26,885 kHz - Data bursts and POCSAG paging signals (relatively sporadic)
26.900 MHz 26900 kHz 26,900 kHz - Very busy paging frequency, various signal strengths - POCSAG and other modes noted
26.925 MHz 26925 kHz 26,925 kHz - Data bursts, AFSK mode
26.950 MHz 26950 kHz 26,950 kHz - POCSAG paging signals, sometimes getting clobbered by data QRM
26.955 MHz 26955 kHz 26,955 kHz - Data bursts, various types noted
27.195 MHz 27195 kHz 27,195 kHz - Data bursts, MFSK bursts and others
27.255 MHz 27255 kHz 27,255 kHz - Data bursts (possibly RCRS [Part 95C] data links, 25 watt power limit)
27.300 MHz 27300 kHz 27,300 kHz - POCSAG paging signals
27.360 MHz 27360 kHz 27,360 kHz - POCSAG paging signals - well known on this frequency (look and sound identical to 26.900MHz, 27.300 MHz)
27.450 MHz 27450 kHz 27,450 kHz - FM carriers on frequency (idle signal) - data bursts and POCSAG signals
27.475 MHz 27475 kHz 27,475 kHz - Data bursts and narrowband paging signals
27.505 MHz 27505 kHz 27,505 kHz - Still busy with paging signals (POCSAG) and other data signals - various bandwidth
27.845 MHz 27845 kHz 27,845 kHz - Active with POCSAG signals, considerably weaker than earlier today

83

10/11 meters / 27.465 MHz AM 27465 AM Canale 45 "Italian Superbowl" 1030 UTC 30 May 2024

« on: May 30, 2024, 1043 UTC »

Heard via UK based remote SDR receiver - G8JNJ "Flydog SDR".  First tuned in at 1030 UTC (1130 local time to the SDR). 

Lots of Italian language traffic popping up on the 26 MHz/27 MHz CB radio band (11 meter band).  Activity noted on "Channel 45" or Canale 45 - frequency 27.465MHz AM.  AM voice traffic in Italian noted on 27.475 MHz AM as well.

In-band frequencies

26.975 MHz AM - Italian language traffic
27.005 MHz AM - Italian language traffic
27.015 MHz AM - Italian language traffic, CB radio channel 5
27.055 MHz AM - Italian, almost as busy at 27465 AM!
27.275 MHz FM - Italian language comms, some QRM
27.305 MHz FM - Italian CB radio comms - QRM from POCSAG paging signals on 27.300 MHz
27.335 MHz FM - Italian CB chatter

84

Peskies / Dutch - Very Active on 6635 kHz LSB - 28 May 2024

« on: May 28, 2024, 1933 UTC »

1930 UTC
28-May-2024
28.05.2024
05/28/2024

Via the G8JNJ SDR online receiver.

Tuning around the 6.6 MHz band, including the 6200 kHz to 6525 kHz marine band and the 6525 kHz to 6765 kHz aeronautical band. 

6640 kHz LSB - French language chatter.  Out of band bootleggers (freebanders) Echo Charlie EC 6.6MHz pirates 45 meter band 45m 45 metros band 6,6 MHz band.  6635 kHz busy with Dutch language comms.  Apparently 6635 LSB is also popular with fishing fleets out of the Nordic countries.

6660 kHz USB has very distorted music at 1932 UTC.  Presumably also Echo Charlie / 6.6 MHz freeband ops

85

Peskies / 6980 kHz LSB - Italian Comms 6.980 MHz LSB 1925 UTC 28 May 2024 [G8JNJ SDR]

« on: May 28, 2024, 1927 UTC »

Received via the G8JNJ SDR on the SW UK coast.

6980 kHz LSB, 6985 kHz LSB and several others.  Noting a "buzzer-like" signal on 6978 kHz USB or 6979 kHz USB mixing with the voice comms on lower side band.

Lots of Italian comms on this frequency, especially 6980kHz USB.  6.980 MHz 6,980 MHz USB Italian comms pescadores or freeband or out of band guys.  The 45 meter band is very busy in Europe - 6.6 MHz band or Echo Charlie pirates.

Good signals, originally tuned in around 1900 UTC...they're going strong nearly 30 minutes later.

86

Peskies / Irish Fishing Boats? 3333 kHz USB 1922 UTC 28 May 2024 [G8JNJ SDR]

« on: May 28, 2024, 1924 UTC »

Two or three stations having very informal QSO about engine problems, talking about making food at 1923 UTC.

Tuned in via the G8JNJ SDR, location: Southwest UK. 

Lots of UNID two-way comms all over MF/HF.  Could be groundwave, or close to it...given the frequency in use, time of day and season.  SIO 444 on the best signal. 

3333 kHz USB
3.333 MHz 3,333 kHz 3,333.0 3.333.0 MHz USB 3333kHz USB

87

VHF/UHF Logs, including satellites and radiosondes / EPAR - 31 MHz Band Street Lighting Control / Telemetry Link (France) VHF Low DX

« on: May 24, 2024, 1646 UTC »

Listening via the G8JNJ SDR receivers.

Polytone data transmissions, sound similar to ROS digital mode.  31 MHz band.

31.325 MHz
31.3875 MHz
31.4375 MHz
31.4625 MHz
31.475 MHz
31.6875 MHz
31.725 MHz
31.925 MHz
31.975 MHz

Seems like there are probably other frequencies in use, but these ones are confirmed via that particular receiver.  I've heard the following locally (in Richmond VA)

31.325 MHz
31.6875 MHz
31.975 MHz

31.6875 MHz comes in fine on 31.685 MHz or 31.69 MHz in NFM mode. 

31.725 MHz, 31.750 MHz and 31.775 MHz are also used for on-site hospital paging in the UK.  31.320 MHz is used for POCSAG paging as well, source is unknown.

88

10/11 meters / 26-28 MHz Paging Systems Activity Log 24 May 2024

« on: May 24, 2024, 1555 UTC »

Tune in time: 1530 UTC

G8JNJ Wessex, UK SDR.

26.200 MHz 26200 kHz - POCSAG paging signals, various signal strengths
26.220 MHz 26220 kHz - Paging signals - wideband, narrowband and very wide (16 kHz - 18 kHz BW) POCSAG
26.250 MHz 26250 kHz - POCSAG paging, FM carrier on frequency during "idle" time
26.350 MHz 26350 kHz - POCSAG paging, various strengths...also a weak FM carrier on frequency
26.500 MHz 26500 kHz - POCSAG paging, FM carrier on frequency during "idle" time
26.545 MHz 26545 kHz - POCSAG paging signals, intermittent activity
26.550 MHz 26550 kHz - POCSAG signals, narrow and wide band
26.600 MHz 26600 kHz - Very active pagers on this frequency 26.6 MHz 26.6MHz 26,600 kHz POCSAG
26.605 MHz 26605 kHz - Paging signals, narrowband POCSAG, sporadic signals, wideband POCSAG noted at 1538 UTC
26.630 MHz 26630 kHz - Wideband POCSAG paging signals, some SIO 555 very strong
26.645 MHz 26645 kHz - POCSAG signals, including 14-15 kHz wide signals
26.650 MHz 26650 kHz - Paging signals noted, roughly as frequent as 26.600 MHz or 26.900 MHz
26.655 MHz 26655 kHz - Sporadic paging signals on 26.655MHz
26.695 MHz 26695 kHz - POCSAG paging signals, numerous signals mixing together, constant activity
26.695 MHz 26695 kHz - POCSAG paging signals - narrowband signals
26.700 MHz 26700 kHz - Paging signals - POCSAG, intermittent use
26.705 MHz 26705 kHz - POCSAG signals - noted once every 30-40 seconds, narrow and wide POCSAG
26.735 MHz 26735 kHz - Wide and narrow POCSAG pager signals
26.745 MHz 26745 kHz - Non stop paging signals, just like 26.695 MHz, S9 + peak signal strength
26.750 MHz 26750 kHz - POCSAG paging and narrowband non-POCSAG signals (6 kHz bandwidth narrow)
26.750 MHz 26750 kHz - FM carrier on frequency during "idle" non-paging periods (very heavy QRM)
26.755 MHz 26755 kHz - Paging signals, pretty frequent use, but not nonstop like 26,695 and 26,745
26.785 MHz 26785 kHz - POCSAG - various bandwidths and signal strengths noted
26.800 MHz 26800 kHz - POCSAG pager signals, very busy at points
26.815 MHz 26815 kHz - Pager signals mixing with weak FM voice on frequency, nonstop signals just like 26.695MHz and 26.745MHz
26.835 MHz 26835 kHz - POCSAG - various bandwidths and signal strengths noted
26.850 MHz 26850 kHz - Sporadic POCSAG signals noted
26.885 MHz 26885 kHz - Sporadic POCSAG, extremely strong wide band paging signal 18 kHz BW!!
26.900 MHz 26900 kHz - Very strong POCSAG on frequency
26.950 MHz 26950 kHz - Narrowband POCSAG signals, other data link signals noted
27.300 MHz 27300 kHz - POCSAG paging signals basically nonstop on this frequency
27.350 MHz 27350 kHz - Narrow band POCSAG noted 27,350kHz 27.35 MHz
27.360 MHz 27360 kHz - Sporadic POCSAG paging signals, heavy CB radio QRM 27.355 MHz and 27.365 MHz
27.425 MHz 27425 kHz - POCSAG signals noted at 1546 UTC and 1547 UTC
27.450 MHz 27450 kHz - FM carrier during idle periods, POCSAG paging and other data also on frequency
27.475 MHz 27475 kHz - Narrowband paging signals - 6-7 kHz wide BW, fair to weak signals
27.500 MHz 27500 kHz - POCSAG, 12-13 kHz wide signals, very similar to 27.505 MHz signals
27.505 MHz 27505 kHz - POCSAG pager signals on frequency, center frequency varies, 27.504 MHz, 27.5055 MHz, 27.506 MHz..
27.510 MHz 27510 kHz - 20 kHz wide POCSAG signals noted, also narrowband 6-8 kHz wide signals on frequency
27.550 MHz 27550 kHz - POCSAG signals, no doubt causing havoc on 27.555 MHz USB
27.650 MHz 27650 kHz - POCSAG paging signals, similar to those noted on 26 MHz band
27.750 MHz 27750 kHz - POCSAG noted, idle FM carrier when no paging signal being sent
27.760 MHz 27760 kHz - Data link frequency, roughly 10-12 kHz bandwidth - paging signals also noted on frequency
27.845 MHz 27845 kHz - POCSAG signals, similar to 27.850 MHz (offset frequency)
27.848 MHz 27848 kHz - POCSAG pager signals, offset frequencies 27.847 MHz, 27.848 MHz, similar to 27.505 MHz signals
27.850 MHz 27850 kHz - See 27.845MHz and the offset 27.847 MHz 27.8475 MHz signals
27.900 MHz 27900 kHz - Sporadic data signals, narrowband POCSAG also noted

29.750 MHz 29750 kHz - Sporadic POCSAG paging signals, 29.8 and 29.9 MHz are well-known, 29.75 MHz is a new one (I think)
29.800 MHz 29800 kHz - Pager frequency, active with various bandwidth POCSAG pager signals 29,8 29,800 kHz
29.900 MHz 29900 kHz - POCSAG paging active, wide and narrow band signals 29,900 kHz 29.9MHz

89

10/11 meters / BBC 25700 kHz AM 25.700 MHz AM 1400 UTC 05/24/24

« on: May 24, 2024, 1404 UTC »

Listening to the 25-30 MHz band via several UK based receivers.  Very strong SIO 555 signal on 25.7 MHz AM 25700 kHz AM 25,700 kHz AM with a BBC voice loop "This is the BBC, there are no programs on this frequency at this time" prior to the top of the hour.

Nice to see some 11 meter broadcasting going on still.  25800 kHz 25.8 MHz 25.800 MHz is well-known, 25700 kHz is an interesting one (yes, it is still a legal 11m BC frequency) - 25.6 MHz to 26.1 MHz (or thereabouts).  The 25600 kHz to 26100 kHz band overlaps with land mobile users, 25 MHz / 26 MHz marine allocation and of course the STL / IFB (cue) transmitters used in the U.S. under Part 74 of the FCC rules - 25.870 MHz to 26.470 MHz 25870 kHz to 26470 kHz (20 kHz steps, FM mode). 

90

10/11 meters / 26.110 MHz FM 26110 FM - KOVR-TV STL 1750 UTC 10 May 2024

« on: May 10, 2024, 1754 UTC »

Faded in at around 1745, maybe a few minutes later.  Stronger signal locally and on U.S. East Coast SDRs, including the W3HFU and N1NTE SDRs.  Very dramatic fading at points.  Signal actually dropped out completely for 10-15 seconds around 1753 UTC. 

Frequency: 26110 kHz 26,110 kHz 26.11 MHz 26.110 MHz 26.1100 MHz FM STL cue transmitter Part 74

Also checked the carrier transmitter on 25.950 MHz, it is much weaker than usual, also very dramatic fading.

KOVR's STL signal went off the air (very clearly so - several seconds of unmodulated FM carrier, then the transmitter was switched off) at 1755 UTC. 

At 1757 UTC, the carrier came back on...then off again at 1757 for 4-5 seconds, then back on with audio again (still at 1757 UTC).  On the air with studio audio at 1758 UTC.