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Topics - R4002

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61
29.7100 MHz FM - Spanish language, likely Part 90 LMR or ???
29.7250 MHz FM - Asian fishery radio comms, previously logged on this frequency
29.7750 MHz FM - Asian fishery radio chatter, sporadic signal
29.7950 MHz FM - Weak FM voice signal, likely land mobile system, taxi cab comms 29.795MHz FM
29.8000 MHz FM - Asian fishery radio chatter, fair to weak
29.8000 MHz FM - POCSAG paging signals, often full scale
29.8050 MHz FM - Taxi cab dispatch, Russian language, Russian taxi cab YL Olga dispatcher
29.8250 MHz FM - Constant FSK data signal on frequency
29.8250 MHz FM - Asian fishery radio comms fishing fleet radio 29.875 MHz FM CSQ
29.8500 MHz FM - OTH Radar, 16-18 kHz BW, strong "horn" sound in NFM mode 29.85 MHz
29.8750 MHz FM - Asian fishery radio comms fishing fleet radio 29.875 MHz FM CSQ
29.9000 MHz FM - Asian fishery radio chatter 29.900 MHz FM
29.9000 MHz FM - POCSAG paging signals 29.9 MHz paging
29.9250 MHz FM - Asian fishery radio chatter, deep fades 29.925 MHz FM [CSQ]
29.9550 MHz FM - Taxi cab dispatch, Russian language, Russian taxi cab YL Olga dispatcher
29.9650 MHz FM - Russian taxi cab radio dispatch, YL dispatcher SIO 222
29.9750 MHz FM - Asian fishery radio chatter, SIO 333
30.0000 MHz FM - FM carrier - 29.9995 MHz 29.9996 MHz
30.0000 MHz FM - FM carrier with "chirp"
30.0200 MHz FM - Modulated CW ID, probably Canadian hospital paging system
30.0200 MHz FM - POCSAG paging burst, Canadian on-site hospital pager
30.0250 MHz FM - UNID language military comms
30.0750 MHz FM - Asian fishery radio chatter 30.075 MHz FM [CSQ]
30.1000 MHz FM - US military comms
30.1050 MHz FM - Russian taxi cab radio dispatch - YL Russia LMR PMR 30.105MHz
30.1550 MHz FM - MFSK data signal, very deep fades
30.3750 MHz FM - Asian fishery radio chatter 30.375 MHz FM [CSQ]
30.5500 MHz FM - Asian fishery radio comms 30.550 MHz FM [CSQ]
30.5800 MHz FM - US Part 90 LMR - construction company 30.58 MHz FM
30.6250 MHz FM - Asian fishery radio chatter 30.625 MHz FM [CSQ]
30.6400 MHz FM - US Part 90 LMR, bus or taxi dispatcher
30.6600 MHz FM - US Part 90 LMR - tail end of a CW ID
30.6800 MHz FM - US Part 90 LMR - bus or van dispatch, good signals
30.7750 MHz FM - Asian fishing fleet radio comms 30.775MHz CSQ
30.8000 MHz FM - Asian fishery radio chatter - CSQ no tone 30.800 MHz FM SIO 333 at 1414 UTC
30.8750 MHz FM - POCSAG paging signals, UNID source location
30.9200 MHz FM - US Part 90 LMR, New England accents
30.9500 MHz FM - Asian fishery radio comms, known active frequency 30.95 MHz FM
31.0000 MHz FM - US Part 90 LMR - business radio comms
31.0000 MHz FM - Asian fishery radio chatter
31.0800 MHz FM - US Part 90 LMR - Business comms
31.1000 MHz FM - US Part 90 LMR - Public Safety, Fire Rescue Mutual Aid Network 131.8 Hz
31.1000 MHz FM - Asian fishing fleet comms, fishery radio network - CSQ with FSK data bursts
31.1200 MHz FM - US Part 90 LMR - Business - School bus or rideshare dispatch, very strong signal 100.0 Hz 151.4 Hz WPYJ841
31.1500 MHz FM - POCSAG paging pager signals, possibly from Greece
31.1750 MHz FM - Asian fishing fleet comms, 31.175 MHz FM [CSQ]
31.2000 MHz FM - US Part 90 LMR - sounds like highway maintenance - "417 to 8"
31.2000 MHz FM - Latin American LMR / PMR taxi cab dispatcher Spanish YL dispatch
31.2400 MHz FM - US Part 90 LMR - YL dispatcher
31.3800 MHz FM - US Part 90 LMR, business radio chatter
31.4200 MHz FM - UNID user, Spanish language, probably taxi cab dispatch unknown location
31.4250 MHz FM - Asian fishery radio chatter 31.425 MHz FM [CSQ]
31.4250 MHz FM - FM carrier with chirp effect
31.4400 MHz FM - US Part 90 LMR, construction dispatch
31.4800 MHz FM - US Part 90 LMR - bus or van dispatcher
31.6000 MHz FM - Military radio comms, strong FM deviation 31.6 MHz FM
31.6250 MHz FM - Asian fishery radio chatter 31.625 MHz FM [CSQ] very good signals at 1427 UTC
31.6750 MHz FM - Asian fishery radio chatter 31.675 MHz FM [CSQ]
31.7500 MHz FM - UK on site hospital pager paging POCSAG
31.7750 MHz FM - Asian fishery radio comms fishing fleet fishermen 31.7750 MHz FM [CSQ]
31.7750 MHz FM - UK on site hospital pager paging POCSAG
31.8000 MHz FM - Asian fishery radio comms, very popular frequency 31.800 MHz 31.8MHz
31.9000 MHz FM - Asian fishery radio comms, sporadic signals
32.0500 MHz FM - Asian fishery radio chatter 32.05 MHz FM [CSQ]
32.1800 MHz FM - Taxi cab dispatch, Costa Rica - 77.0 Hz and 141.3 Hz tones
32.4750 MHz FM - Asian fishery radio chatter
32.5500 MHz FM - OTH Radar "Buzz" sound, 100 Hz BW
32.9400 MHz FM - Taxi cab dispatch, Costa Rica - 77.0 Hz and 141.3 Hz tones

62
10/11 meters / FM CB Activity - 26.805 MHz FM 1630 UTC 4 Jan 2024
« on: January 04, 2024, 1655 UTC »
Strong signals coming in locally and via the W3HFU KiwiSDR on 26.805MHz FM free band CB FM calling frequency.

There doesn't seem to be much, if any, in-band FM mode activity at least at the moment. 

The "usual suspects" are active as well:

26.555 MHz LSB - Spanish language calling frequency, very busy
26.575 MHz AM - Mexican trucker frequency, basically nonstop activity
26.585 MHz AM - Just as busy as 26.575MHz
26.615 MHz LSB - Weak SSB chatter on this frequency, Spanish language
26.655 MHz AM - US stations, possibly hunters / hunt club radio comms
26.735 MHz AM - US truck drivers using export radios, this is Channel 19 "down one band" and often has trucker chatter on it
26.765 MHz AM - Taxi cab radio dispatch, YL dispatcher - the usual LMR / PMR user of this frequency 26765 AM 26.7650 MHz AM
26.785 MHz AM - US freeband CB radio chatter
26.915 MHz AM - the usual activity on this frequency


27.420 MHz LSB - US freeband CB radio chatter
27.445 MHz USB - Spanish language comms, some QRM from 27.45 MHz
27.450 MHz LSB - US freeband CB radio comms, fair signals
27.455 MHz USB - Spanish language calling frequency, see also: 26.555 LSB
27.475 MHz AM - Possible taxi cab radio dispatch, interesting frequency choice
27.485 MHz AM - Spanish language taxi cab dispatcher, YL dispatcher with heavy SSB QRM
27.515 MHz LSB - Caribbean calling frequency, The Knight Patrol!
27.525 MHz LSB - Caribbean area chatter, distinctive accent
27.555 MHz USB - Calling frequency, active
27.575 MHz AM - Taxi cab radio dispatch, heavy QRM from SSB
27.625 MHz LSB - US stations, very weak
27.635 MHz AM - US truckers using export radios, sporadic activity (see also: 27.185 MHz, 26.735 MHz, 25.835 MHz, etc.)
27.655 MHz USB - Spanish language freeband CB radio comms
27.665 MHz USB - Spanish speaking freeband CB chatter
27.695 MHz LSB - Extremely strong Latin American informal QSO
27.725 MHz LSB - Spanish speaking freeband CB 11m comms
27.725 MHz USB - Spanish speaking freebanders
27.735 MHz AM - Radio taxi dispatch, Latin America - YL taxi dispatcher, Spanish language
27.745 MHz AM - Radio taxi dispatch, Latin America - YL taxi dispatcher, Spanish language
27.755 MHz AM - Radio taxi dispatch, Latin America - YL taxi dispatcher, Spanish language
27.765 MHz LSB - Spanish language chatter
27.785 MHz AM - Radio taxi dispatch, Latin America - YL taxi dispatcher, Spanish language
27.815 MHz AM - Radio taxi dispatch, Latin America - YL taxi dispatcher, Spanish language
27.905 MHz AM - Radio taxi dispatch, Latin America - YL taxi dispatcher, Spanish language
27.915 MHz AM - US truck drivers, very dramatic fading

Update:  at 1650 UTC, 26.805 MHz FM is still active.  I also noted a mixture of AM, FM and LSB signals on CB Channel 40 frequency 27.405 MHz.

There is also an unmodulated carrier wave signal on 27.145 MHz, plus two different data signals, one centered on 27.144 MHz, the other centered closer to 27143.5 kHz 27.1435 kHz.  Their bandwidths are within the RCRS regulations either way.

63
10/11 meters / PNI Escort HP 82 Handheld CB AM FM Multi-Norm Review
« on: January 02, 2024, 1427 UTC »
So I picked one of these up a couple months ago.  They do not have an "export mode" or "RU mode" - at least the firmware in the version I have does not. 

It does, however, have the following bands ready to go.  It's legal to use in the USA under Part 95 in both regular old AM mode and FM mode on the standard 40 channels in the EU band.  Set it to CE band and it does the same legal 40 channels but is locked in FM mode only.

EU band 40 channels 26.965 MHz - 27.405 MHz - same as American CB radio band and export radios "Band D" - AM and FM modes

CE band 40 channels 26.965 MHz - 27.405 MHz - identical to EU band and the US FCC mid band, but is FM mode only

DE band 80 channels 26.565 MHz - 27.405 MHz - this is the German 80 channel CB band, which is also legal in several other countries in addition to Germany.  Channels 1-40 are identical to the EU band and the American CB radio band, AM and FM modes are allowed on channels 1-40, 4w AM carrier, 4w FM.  Channels 41-80 are FM only.  Channel 41 is 26.565 MHz and Channel 80 is 26.955 MHz.  Straight 10 kHz sequence with no skipped channels 26.565 MHz, 26.585 MHz, 26.595 MHz, 26.605 MHz, 26.615 MHz, etc. up to 26.925 MHz, 26.935 MHz, 26.945 MHz and 26.955 MHz. 

UK band 40 channels 27.60125 MHz - 27.99125 MHz - this is the UK FM 27/81 band.  4w FM, straight 10 kHz channel sequence, 27.60125 MHz to 27.99125 MHz.  27.78125 MHz is channel 19.  No skipped channels or out of order channel numbering for channels 23, 24 and 25.  In UK mode, pressing the AM/FM - BAND button once switches you between the UK FM 40 channel band and the CE band (CEPT European standard 40 channel mid band FM CB radio allocation, that is, the standard 26.965 MHz - 27.405 MHz allocation, FM only).  Whichever channel you're on on the UK FM CB band, it will flip you down to that channel on the CE band, which is sort of a neat feature. 

I2 band 34 channels  26.875 MHz - 27.265 MHz - Italian "I2 CB Band" - 34 channel band.  This is one of two 27 MHz 11 meter CB bands available in Italy.
Channels 1 to 23 are identical to the US band/CEPT CB band/EU mid band FM.  All channels allow use of AM and FM modes.  Channels 26 to 34 are the non-standard channels, channel 24 and 25 are standard CB channels, but are numbered in a non-standard way.

Channel 24 is 27.245 MHz - normally this is Channel 25
Channel 25 is 27.265 MHz - normally this is Channel 26
Channel 26 is 26.875 MHz
Channel 27 is 26.885 MHz
Channel 28 is 26.895 MHz
Channel 29 is 26.905 MHz
Channel 30 is 26.915 MHz
Channel 31 is 26.925 MHz
Channel 32 is 26.935 MHz
Channel 33 is 26.945 MHz
Channel 34 is 26.955 MHz

So Italy has non-standard CB channels available by using the I2 band.

IN band 27 channels 26.965 MHz - 27.275 MHz.  India CB radio 27MHz band Indian CB radio allocation.  5w AM / 5w FM power output.  Identical to the standard channel plan for channels 1-27.  Yep, it even follows the out of order channel numbering for 23, 24 and 25. 

PL band 40 channels 26.960 MHz - 27.400 MHz - Polish CB radio channel plan.  Poland CB allocation -5 kHz or the "zeros".  Identical to the EU / CEPT / FCC standard US 40 channel band plan, except every channel frequency is -5 kHz.  So Channel 1 is 26.960 MHz, Channel 2 is 26.970 MHz, Channel 3 is 26.980 MHz, Channel 4 is 27.000 MHz...up to Channel 38 being 27.380 MHz, Channel 39 is 27.390 MHz and Channel 40 is 27.400 MHz.  AM and FM modes are allowed. 

Counting the 40 UK FM channels + German 40 additional FM channels, there's 80 non-standard channels available right there.  Yes, there's also the Polish channels, but that 5 kHz offset isn't that much of a help in most situations as far as finding a clear frequency, at least in AM and FM mode.

I think I might get myself one or two Midland 75-822 handhelds, or one of the other PNI handhelds and do some range testing.  I know the Midland 75-822 can be easily modified to cover the 120 channel "low/mid/high" bands - or Band C/Band D/Band E. 

26.515 MHz - 27.855 MHz total coverage

Low band / Band C - 26.515 MHz - 26.955 MHz
Mid band / Band D / legal FCC CB band / 26.965 MHz - 27.405 MHz
High band / Band E  27.415 MHz - 27.855 MHz.
 
I believe it also can be switched to do the 80 channel German CB radio allocation and the UK FM CB channels as well.   The issue is, of course, that the German band extra channels are FM only. 



64
Worcester County, Mass. fire mutual aid network radio system test, call outs to individual stations on the network and radio checks.  Test complete at 1407 UTC (907 local time).  Good signal on 31.1000 MHz FM 131.8 Hz PL tone - WQEW233 license / callsign, ID "Worcester Fire" over the air.  31.1 MHz FM PL=131.8Hz.   

Received via G8JNJ online SDR receiver - receiver located in the UK.  Signal strength S5-S7 with minor fading.  Nice FM audio on VHF low band. 

Frequency 31100 kHz FM 31,100 FM 31.1000 FM CTCSS 131.8Hz 131.8 tone


This frequency is used for all sorts of purposes, but it was nice and clear with about a S2-S3 noise floor. 

65

Lots of Asian fishery traffic all over the band right now, especially below 33 MHz or so.

Noted wide deviation FM voice on 30025 FM 30.025 MHz FM.  Solid 18-22 kHz wide.  Russian military traffic.  Not Russian taxis (although there are lots of those all over 25-30 MHz right now too).  First appeared on frequency at 1245 UTC, active until 1250 UTC or 1251 UTC.  Nice strong signal, SIO 444. 

Weak fishery radio network chatter also on frequency 30.0250 MHz FM [CSQ]. 

66
26765 kHz AM 26.765MHz AM Mexican taxicab radio coming in mid-morning (US east coast time) on a handheld receiver.  Fair amount of activity on the legal 40 CB band and the upper channels as well.

26.765 MHz AM is a nice band opening indicator as the YL dispatch lady taxi lady comes in basically daily.  Mexican taxi cab radio dispatch 26.7650 MHz AM. 

67
Lots of activity on the FM calling frequency 26.805MHz FM 26805 kHz FM.  Noted almost as much on 26.795 MHz as well.  Heard "187 Northern California" working a 10 division station (Mexico) on 26.805 MHz FM with almost full quieting signals, very nice audio from both stations.   A third station keyed over the Mexican DXer but thanks to capture effect...it made almost no difference. 

26.795 MHz is a good alternate for the 26.805 FM frequency.   It is usually much quieter than, say, 26.815 MHz or 26.825 MHz.

68
11 Meter Band Activity 26 MHz Band 28 MHz Russian taxis 25.615 MHz - 30.105 MHz 26.060 MHz 27.995 MHz 26-28 MHz.  Russian YL dispatcher Russia CIS 50 division frequencies radio taxi Olga taxi dispatch lady reading addresses CB radio interference 28MHz band 29MHz 27MHz CB band 25MHz 26-28 MHz CB radio bands

Russian taxi cab radio dispatch YL dispatcher Russian PMR LMR land mobile comms logged on the following frequencies

25.615 MHz - Begin Export Radio Band A Channel 1 - to 28.305 MHz / 28.310 MHz / 28.315 MHz or 30.105 MHz most radios cover 25.615-30.105

25.655 MHz FM
25.695 MHz FM
25.755 MHz FM
25.775 MHz FM - heavy QRM from 25775 LSB SSB free band CB chatter
25.835 MHz FM
25.850 MHz FM 
25.865 MHz FM
25.895 MHz FM
25.945 MHz FM
25.955 MHz FM
25.965 MHz FM - some QRM from 25.965MHz LSB Spanish language freeband CB radio
25.975 MHz FM
26.005 MHz FM
26.025 MHz FM
26.045 MHz FM
26.050 MHz FM
26.055 MHz FM
26.060 MHz - Russian CB Radio Channel A01R or A01P - 5 kHz steps / 10 kHz steps to 27.995 MHz
26.065 MHz FM
26.070 MHz FM
26.075 MHz FM
26.085 MHz FM
26.095 MHz FM
26.115 MHz FM
26.125 MHz FM - with FSK data signal causing pretty bad QRM at points
26.135 MHz FM
26.165 MHz FM
26.175 MHz FM
26.185 MHz FM
26.195 MHz FM - paging signals on 26.200 MHz 26.2MHz pagers heavy POCSAG interference
26.220 MHz FM
26.225 MHz FM
26.240 MHz FM
26.255 MHz FM
26.260 MHz FM
26.265 MHz FM
26.275 MHz FM
26.305 MHz FM
26.335 MHz FM - some QRM from AM voice comms on same frequency
26.375 MHz FM
26.485 MHz FM
26.500 MHz - Russian CB Radio Channel A40R / A40P
26.500 MHz FM
26.505 MHz - Russian CB Radio Channel A40E / Export Radio Channel Plan Band B Channel 40
26.505 MHz FM
26.510 MHz - Russian CB Radio Channel B01R / B01P
26.510 MHz FM
26.515 MHz - Export Radio Band C Channel 1
26.515 MHz - Russian CB Radio Channel B01E Band B Channel 1 European Plan or "Fives"
26.525 MHz FM
26.575 MHz FM - significant interference from freeband CB radio signals (AM mode)
26.590 MHz FM
26.600 MHz FM - active POCSAG paging on same frequency
26.615 MHz FM
26.620 MHz FM
26.625 MHz FM
26.630 MHz FM
26.635 MHz FM
26.645 MHz FM
26.650 MHz FM
26.665 MHz FM
26.670 MHz FM
26.675 MHz FM
26.680 MHz FM
26.685 MHz FM
26.690 MHz FM - some interference from POCSAG paging signals on 26.695 MHz
26.700 MHz FM - some interference from POCSAG paging signals on 26.700 MHz, 26.695 MHz and 26.705 MHz
26.705 MHz FM - pager signal QRM
26.715 MHz FM
26.725 MHz FM
26.730 MHz FM
26.735 MHz FM - some interference from German FM CB and US truckers using export radios
26.740 MHz FM
26.755 MHz FM
26.765 MHz FM - the Mexican taxi cab dispatcher is not yet coming in on this frequency
26.775 MHz FM
26.780 MHz FM
26.795 MHz FM
26.800 MHz FM
26.805 MHz FM including off-frequency 26.80625 MHz 26806.25 kHz 26.806 MHz
26.810 MHz FM
26.825 MHz FM
26.855 MHz FM
26.860 MHz FM
26.865 MHz FM
26.875 MHz FM
26.895 MHz FM - with pretty substantial QRM from pager operating on 26900 kHz 26.900 MHz 26.9 MHz
26.925 MHz FM
26.950 MHz FM
26.955 MHz - Export Radio Band C Channel 40
26.960 MHz - Russian CB Radio Channel C01P / C01R or just Channel 1R
26.960 MHz - Polish CB Radio Channel 1
26.960 MHz FM - very severe interference from non-stop data signals on frequency 26960 / 26,960 - CB Channel 1R
26.965 MHz - Standard EU / CE / CEPT mid band CB Radio Channel 1
26.965 MHz - US CB Radio FCC CB Channel 1
26.965 MHz - Export Radio Band D Channel 1
26.965 MHz - Russian CB Radio Channel C01E or Channel 1E
26.975 MHz FM - CB Channel 2 FM
26.985 MHz FM - Simplex Repeater - CB Channel 3 FM
26.995 MHz FM - Russian taxis with heavy QRM from data on 26.995MHz RCRS
27.010 MHz FM - CB Channel 5R
27.035 MHz FM - Simplex Repeater mixing with Russian taxi cab dispatch - CB Channel 7
27.050 MHz FM - Repeater - CB Channel 8R
27.055 MHz FM - CB Simplex Repeater - CB Channel 8
27.065 MHz FM Russian taxi, heavy QRM from 27.065 MHz FM
27.070 MHz FM Repeater - CB Radio Repeater Channel 10R
27.080 MHz FM Repeater - CB Radio Repeater Channel 11R
27.100 MHz FM Repeater - Krasnodar Russia CB Radio Repeater 27100 FM Channel 12R
27.120 MHz FM - Russian taxi
27.125 MHz FM - Russian, heavy QRM
27.180 MHz FM - Russian QSOs
27.200 MHz FM - Russian
27.205 MHz FM - Russian, also Repeater on 27.205MHz FM
27.250 MHz FM - CB Channel 23R
27.255 MHz FM - CB Channel 23
27.260 MHz FM - CB Channel 26R
27.265 MHz FM Russian taxi, QRM from US stations running AM
27.300 MHz FM Russian taxi, heavy POCSAG paging QRM CB Radio Channel 30R
27.330 MHz FM Russian taxi - CB Channel 33R
27.340 MHz FM - Russian taxi cab radio comms - CB Channel 34R
27.345 MHz FM Russian, heavy SSB QRM
27.360 MHz FM - Russian taxi cab radio comms, POCSAG paging on same frequency - CB Channel 36R
27.400 MHz - Russian CB Radio Channel C40P / C40R or just Channel 40R or 40P
27.400 MHz - Polish CB Radio Channel 40
27.405 MHz - Standard EU / CE / CEPT mid band CB Radio Channel 40
27.405 MHz - US CB Radio FCC CB Channel 40
27.405 MHz - Export Radio Band D Channel 40
27.405 MHz - Russian CB Radio Channel C40E or Channel 40E
27.410 MHz - Russian CB Radio Channel D01P / D01P
27.415 MHz - Export Radio Band E Channel 1
27.415 MHz - Russian CB Radio Channel D01E
27.415 MHz FM
27.420 MHz FM
27.440 MHz FM
27.445 MHz FM - with heavy QRM from paging signals on 27.450 MHz
27.490 MHz FM
27.510 MHz FM - strong QRM from POCSAG pager signals on / near 27.500 MHz / 27.505 MHz
27.575 MHz FM - severe SSB free
27.585 MHz FM
27.601 MHz - UK FM CB Radio Channel 1 - frequency 27.60125 MHz FM - 10 kHz steps to 27.99125 MHz FM
27.601 MHz - CADS / WPAS Channel LW01 - 10kHz steps to 27.991 MHz, AM or FM mode - matches UK FM 27/81 band plan
27.605 MHz - CADS / WPAS Channel UW01 - 10 kHz steps to 27.995 MHz, AM or FM mode
27.650 MHz FM - UK FM CB Channel 6 - 27.651 MHz FM and SSB freeband CBer interference
27.675 MHz FM
27.685 MHz FM
27.725 MHz FM
27.735 MHz FM
27.745 MHz FM
27.750 MHz FM
27.755 MHz FM
27.760 MHz FM - POCSAG paging and MFSK data link on same frequency
27.765 MHz FM
27.775 MHz FM
27.795 MHz FM
27.800 MHz FM
27.805 MHz FM
27.815 MHz FM
27.825 MHz FM
27.845 MHz FM
27.855 MHz FM with heavy QRM from 27.855 MHz AM
27.865 MHz FM
27.875 MHz FM
27.890 MHz FM - right next to strong data / paging signal on 27.885MHz, UK FM CB 27.891 FM
27.895 MHz FM
27.905 MHz FM - causing severe interference to UK FM CB 27.901 FM and 27.911 FM
27.915 MHz FM - see above re: Russian taxi interference CB radio
27.925 MHz FM
27.935 MHz FM - very strong POCSAG pager and data link on 27.94 MHz
27.945 MHz FM
27.950 MHz FM - POCSAG paging QRM, UK FM CB 27.951 FM 27.95125 MHz FM
27.955 MHz FM
27.965 MHz FM - some QRM from UK FM CB 27.96125 FM and 27.97125 MHz FM
27.975 MHz FM
27.985 MHz FM
27.995 MHz FM - with QRM from 27.995 MHz LSB freebanders, 27.99125 FM UK FM CB CH40
28.000 MHz - Begin 10 meter amateur radio 28MHz band allocation to 29.7MHz
28.045 MHz FM
28.055 MHz FM
28.060 MHz FM
28.095 MHz FM
28.115 MHz FM - very strong
28.125 MHz FM
28.135 MHz FM
28.145 MHz FM - Very busy
28.155 MHz FM
28.165 MHz FM
28.175 MHz FM
28.195 MHz FM
28.210 MHz FM
28.215 MHz FM
28.225 MHz FM
28.245 MHz FM
28.250 MHz FM
28.255 MHz FM
28.265 MHz FM
28.275 MHz FM
28.285 MHz FM
28.300 MHz FM
28.305 MHz FM
28.310 MHz FM
28.315 MHz FM
28.325 MHz FM
28.355 MHz FM
28.425 MHz FM
28.875 MHz FM
28.885 MHz FM
28.975 MHz FM
29.700 MHz - End 10 meter amateur band 28MHz ham radio band
29.805 MHz FM
29.825 MHz FM
29.855 MHz FM
29.885 MHz FM
29.905 MHz FM
29.965 MHz FM

69
Russian taxi cab radio chatter logs - YL dispatcher Olga Russian Taxi Controllers Russian PMR LMR land mobile radio comms VHF low band 11m band 27MHz CB band


25.615 MHz FM
25.650 MHz FM
25.665 MHz FM
25.675 MHz FM
25.705 MHz FM
25.725 MHz FM
25.765 MHz FM
25.770 MHz FM
25.775 MHz FM
25.845 MHz FM
25.875 MHz FM
25.925 MHz FM
25.945 MHz FM
25.955 MHz FM
25.965 MHz FM
25.975 MHz FM
26.000 MHz FM
26.025 MHz FM
26.045 MHz FM
26.050 MHz FM
26.060 MHz FM
26.065 MHz FM
26.085 MHz FM
26.105 MHz FM
26.115 MHz FM
26.125 MHz FM
26.145 MHz FM
26.155 MHz FM
26.175 MHz FM
26.185 MHz FM
26.195 MHz FM
26.205 MHz FM
26.260 MHz FM
26.275 MHz FM
26.285 MHz FM
26.335 MHz FM
26.365 MHz FM
26.375 MHz FM
26.485 MHz FM
26.495 MHz FM
26.505 MHz FM
26.525 MHz FM
26.560 MHz FM
26.600 MHz FM
26.605 MHz FM
26.620 MHz FM
26.625 MHz FM
26.630 MHz FM
26.645 MHz FM
26.650 MHz FM
26.670 MHz FM
26.675 MHz FM
26.680 MHz FM
26.700 MHz FM
26.725 MHz FM
26.750 MHz FM
26.760 MHz FM
26.765 MHz FM - with QRM from taxi cab dispatcher on same frequency using AM mode 26.765 MHz AM
26.770 MHz FM
26.775 MHz FM
26.780 MHz FM
26.825 MHz FM
26.855 MHz FM
26.900 MHz FM - with very heavy QRM from paging/data POCSAG on 26.9 MHz
26.950 MHz FM - with very heavy QRM from paging and data on 26.950 MHz, 26.945 MHz and 26.955 MHz
26.980 MHz FM
27.005 MHz FM
27.040 MHz FM
27.050 MHz FM
27.055 MHz FM
27.120 MHz FM
27.170 MHz FM - with heavy QRM from 27.170 MHz USB SSB chatter
27.200 MHz FM - extreme QRM from 27.200 MHz and 27.205 MHz
27.255 MHz FM - noted heavy QRM from voice and RCRS data signals on 27.255MHz
27.270 MHz FM
27.330 MHz FM
27.350 MHz FM
27.400 MHz FM - severe QRM from SSB CB signals on/near the frequency
27.410 MHz FM
27.415 MHz FM
27.420 MHz FM
27.430 MHz FM
27.440 MHz FM
27.490 MHz FM
27.500 MHz FM
27.510 MHz FM
27.540 MHz FM
27.575 MHz FM
27.580 MHz FM
27.585 MHz FM
27.625 MHz FM
27.645 MHz FM
27.650 MHz FM
27.675 MHz FM
27.705 MHz FM
27.715 MHz FM
27.720 MHz FM - heavy QRM from UK FM CB comms and SSB freeband CB signals
27.725 MHz FM
27.735 MHz FM
27.745 MHz FM
27.750 MHz FM - POCSAG pager also active on this frequency
27.755 MHz FM
27.765 MHz FM
27.775 MHz FM - causing severe QRM with UK FM CB Channel 19 - 27.78125 MHz FM
27.795 MHz FM
27.805 MHz FM
27.815 MHz FM
27.825 MHz FM
27.835 MHz FM
27.845 MHz FM - severe QRM from POCSAG paging system on 27.848 MHz
27.850 MHz FM - severe QRM from POCSAG pager signals on 27.848 MHz and UK FM CB chatter on 27.851 FM
27.855 MHz FM - with very strong QRM from freebanders on 27.855 MHz AM
27.865 MHz FM
27.875 MHz FM
27.885 MHz FM
27.895 MHz FM
27.900 MHz FM
27.905 MHz FM
27.915 MHz FM
27.925 MHz FM
27.935 MHz FM
27.945 MHz FM
27.950 MHz FM
27.955 MHz FM
27.965 MHz FM
27.975 MHz FM
27.985 MHz FM
27.995 MHz FM
28.005 MHz FM - severe QRM from 10m CW signals
28.050 MHz FM
28.055 MHz FM
28.100 MHz FM
28.105 MHz FM
28.115 MHz FM
28.125 MHz FM
28.145 MHz FM
28.155 MHz FM
28.175 MHz FM
28.195 MHz FM
28.205 MHz FM
28.210 MHz FM
28.215 MHz FM
28.225 MHz FM
28.245 MHz FM
28.260 MHz FM
28.265 MHz FM
28.275 MHz FM
28.300 MHz FM
28.305 MHz FM
28.310 MHz FM
28.315 MHz FM
28.325 MHz FM
28.335 MHz FM
28.355 MHz FM
28.375 MHz FM
28.585 MHz FM
29.745 MHz FM
29.805 MHz FM
29.815 MHz FM
29.855 MHz FM
29.885 MHz FM
29.905 MHz FM
29.915 MHz FM
29.945 MHz FM
29.955 MHz FM
29.965 MHz FM

70
Lots of Russian comms coming in this morning on the G8JNJ SDR.  Noted taxi cab land mobile radio dispatch on

27.420 MHz FM - strong YL dispatcher getting obliterated by SSB QRM




27170 kHz USB 27.170 MHz USB
27180 kHz USB 27.180 MHz USB
27190 kHz USB 27.190 MHz USB
27200 kHz USB 27.200 MHz USB - with very heavy QRM from 27.200 MHz FM, 27.205 MHz FM and 27.205 MHz FM, including a repeater on 27.205 MHz FM - CB Radio Channel 20 FM


71
27100 FM getting almost constantly keyed up.  Lots of activity on 11m, every 5 kHz.

72
Via G8JNJ SDR.


3000 kHz AM - note: significant QRM from Russian comms on 3003 kHz USB - 3002.3 kHz, 3002.5 kHz, 2999.9 kHz, 2998 kHz, 3001 kHz
3030 kHz AM or 3035 kHz AM?  3033 kHz, 3033.3 kHz, 3033.5 kHz, 3033.8 kHz, 3034.1 kHz
3060 kHz AM - 3058 kHz maybe - 3058.1 kHz, 3057 kHz, 3057.5 kHz, 3058.8 kHz, 3059.5 kHz
3120 kHz AM - stations on: 3119.5 kHz, 3118.6 kHz , 3121.6 kHz
3150 kHz AM - very busy - stations on frequency: 3149.2 kHz 3150.0 kHz, 3151.9 kHz, 3152.1 kHz, 3153.3 kHz
3170 kHz AM - 3172.0 kHz, 3169.0 kHz, 3171.1 kHz

3.000 MHz 3.003 MHz 2.999 MHz, 3.001 MHz
3.030 MHz AM w/QRM from Russian two way comms on 3003 kHz USB 3.003 MHz USB
3.170 MHz
3.

73
Good signals via G8JNJ SDR at 1345 UTC on 21 December 2023.  29.855 FM 29,855 NFM Taxis, Russia LMR 29.7-30 MHz 29.7-50 MHz VHF low band but still more or less “10 meters” - that little sliver of spectrum between 29.700 MHz and 30.000 MHz

Not sure if they’re using export radios or actual land mobile radios.  Nice 15-16 kHz wide FM. Most export radios / 10m radios that cover 25.615 MHz - 30.105 MHz are in NFM only - that is, 8K00F3E to 8K50F3E to 10K0F3E emission.

YL dispatcher and OM drivers.  Dispatch signals a solid SIO 444.   Another Russian taxi service land mobile radio LMR PMR system operating in the 25-30 MHz region.

29855 FM 29.8550 MHz FM 29.855MHz Taxicab Radio Dispatch

74
10 kHz wide MFSK signal on 27.760 MHz, active at the same time 27.940 MHz was booming in - along with numerous other signals from that general area, including taxi cab radio communications (taxi controllers - YL taxi dispatchers "Olga") on 25 MHz, 26 MHz, 27 MHz, 28 MHz and VHF low band (37 MHz, 38 MHz, 41 MHz and 42 MHz - specifically 37.225 MHz, 38.375 MHz and 38.525 MHz) - see thread here: https://www.hfunderground.com/board/index.php/topic,122839.0.html


https://www.youtube.com/watch?v=g7gYZsoxX0Q

^ Video showing the signal on 27760 kHz 27.76MHz.  5 watt power output limit. 

Other frequencies - also 5w power limit:

26.965 MHz - also CB radio channel 1
27.002 MHz offset frequency
27.0025 MHz center frequency
27.003 MHz offset frequency
27.007 MHz offset frequency
27.0075 MHz center frequency
27.008 MHz offset frequency
27.075 MHz - also CB channel 10
27.080 MHz - halfway between CB radio channel 10 and CB radio channel 11
27.100 MHz - halfway between RCRS / data frequency 27.095 MHz and CB radio channel 12 - 27.105 MHz
27.200 MHz
27.255 MHz - shared with CB radio channel 23, used for high power paging and data worldwide
27.400 MHz
27.700 MHz
27.720 MHz
27.740 MHz
27.760 MHz
27.780 MHz
27.800 MHz
27.820 MHz
27.840 MHz
27.860 MHz
27.880 MHz
27.900 MHz
27.920 MHz
27.940 MHz
27.960 MHz
27.980 MHz

75
Listening to 25-30 MHz and 30-50 MHz this morning on the G8JNJ “Flydog SDR”.  Lots of Russian LMR / PMR taxi cab comms on 26MHz, 27MHz, 28MHz and tons of out of band chatter all over the place.  Russians on 29.898 MHz USB (getting obliterated by POCSAG paging signals center on 29.900 MHz). 

37.225 MHz FM, with nice strong deviation 16 kHz bandwidth and very pronounced AC hum in the background, YL dispatcher Olga taxi controller 37,225 37.2250 MHz FM Russian Russia taxi cab radio comms VHF low.  The hum could also be a CTCSS tone in use, but it reminds me more of the 30-88 MHz military radio comms that have the tell-tale 400Hz aircraft power supply hum in the background. 

I know low band VHF radios like the Alinco DR-135LH cover 33 MHz - 48.5 MHz and 57.0125 MHz - 57.5 MHz, in regular wide FM (16K0F3E) and narrow FM (8K50F3E for the Alinco radio anyway).  12.5 kHz / 25 kHz steps, which fit this perfectly.  37225.0 kHz FM Russian taxi cab comms LMR land mobile radio VHF low band DX skip. 

Both 38.3750 MHz and 38.5750 MHz 85.4Hz PL tone are known Moscow taxi radio land mobile taxi radio dispatch frequencies, it’s possible that 37.2250 MHz is part of this same system. 

Moscow Russia Radio Taxi VHF Low Band PMR LMR Two Way Taxi Cab Radio system 30-50 MHz 37 MHz 38mhz band 85.4 Hz PL tone Moscow Oblast / Moscow Suburbs 37,225 38,375 38,575 85,4 PL tone CTCSS base mobile YL dispatcher

37.225 MHz possible additional part of this system. 

38.375 MHz 85.4 Hz CTCSS
38.525 MHz 85.4 Hz CTCSS

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