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Messages - R4002

Pages: 1 ... 5 6 7 8 9 10 11 12 [13] 14 15 16 17 18 19 20 21 ... 202
181
10/11 meters / Re: FM in the USA
« on: June 12, 2023, 1227 UTC »
As others have mentioned, 26.805 MHz FM seems to be the "home channel". 

I've noticed US FM activity on 27.605 MHz FM and 27.805 MHz FM...but 26.805 FM is by far the most popular out of band frequency for US stations.

Of course, 27.605 MHz is right next to UK FM CB channel 1 on 27.60125 MHz FM.  27.805 MHz is right next to 27.80125 MHz (UK FM CB channel 21).  As far as the UK FM channels go, I've worked UK stations on 27.97125 FM (UK FM CB channel 38), 27.90125 MHz FM (UK FM CB channel 31) and 27.91125 MHz FM (UK FM CB channel 32).  Naturally UK FM channel 19 is the place to start - 27.78125 MHz FM or just 27.781 MHz FM. 

When the band is nice and open to the UK and Europe, there's lots of SSB QRM all over the band, plus AM and FM signals on the "standard" frequencies like 27.785 MHz [taxi cab dispatcher out of Mexico].   I've noticed that the Latin American stations are happy with using FM in the legal 40 CB band. 
 

As far as in-band legal 40 channels go, I've heard US FM signals on

Channel 14 - 27.125 MHz FM.  Unfortunately, there's a lot of AM users on that frequency. 
Channel 23 - 27.255 MHz FM
Channel 27 - 27.275 MHz FM
and
Channel 29 - 27.295 MHz FM. 

There are some indications that Channel 29 FM is being used in some parts of the country as a secondary channel to Channel 19 AM. 

Channels 30 and 31 are both popular FM calling channels in Europe. 


182
10/11 meters / 11m Activity UK Receiver 09 June 2023
« on: June 09, 2023, 1547 UTC »
Via G8JNJ remote SDR receiver. 

From 1120 UTC to 1135 UTC  on June 9th 2023.


25615 FM - Somebody doing radio checks or tuning up?
25615 LSB - Portuguese
25625 AM - Russian language chatter
25635 LSB - Portuguese, very busy
25662 USB - FSK signal
25665 AM - Italian, heavy fading
25690 USB - Strong FSK signal
25705 AM - Weak AM two-way comms
25715 AM - Italian language, two OMs - does *not* sound like a taxi cab
25770 FM - Russian LMR - taxi cab Russia YL dispatch
25775 LSB - Portuguese chatter, good signals w/Roger beep
25775 USB - Russian?
25785 AM - Italian
25800 AM - Weak AM signal - possibly 11m shortwave pirate
25805 AM - Italian, two OMs chatting, one is 2.5 kHz off-frequency
25815 AM - Weak AM chatter
25835 LSB - Portuguese
25855 FM - UNID language, weak
25875 FM - Russian LMR - taxi cab dispatcher YL
25895 AM - Portuguese, weak
25905 FM - Russian LMR - taxi cab radio dispatcher
25915 FM - Weak FM two-way comms
25925 FM - Weak FM two-way comms
25945 AM - Polish language?  UNID
25955 AM - Italian
25975 AM - Spanish language, possibly taxi cab dispatch LMR
25985 LSB - Portuguese, very good signals
26005 FM - Russian LMR - taxi cab Russia YL dispatch
26025 FM - Russian LMR - taxi cab Russia YL dispatch
26065 AM - Weak AM signals noted
26085 FM - Russian LMR - taxi cab Russia YL dispatch
26085 LSB - Spanish, somebody doing radio checks
26125 FM - Russian LMR - taxi cab Russia YL dispatch
26150 FM - POCSAG paging signals - 26.25 MHz pager
26155 AM - Spanish language, taxi cab dispatch?
26163 USB - FSK signal
26165 AM - Portuguese
26200 FM - POCSAG paging signals, often with FM carrier during "idle" times (26.2 MHz)
26205 FM - Russian LMR - taxi cab Russia YL dispatch Russian taxis
26225 USB - UNID language
26235 FM - Russian LMR - taxi cab Russia YL dispatch Russian taxis
26250 FM - POCSAG paging signals - 26.25 MHz pager
26285 AM - Italian language chatter
26300 FM - POCSAG paging signals - 26.3 MHz pager
26315 FM - Russian LMR - taxi cab Russia YL dispatch
26345 AM - Spanish language, informal chatter (freebanders)
26350 FM - POCSAG paging signals - 26.35 MHz pager
26385 AM - Portuguese, freebanders
26400 FM - POCSAG paging signals
26400 AM - AM signal with multi-tone data (not POCSAG!)
26415 AM - Portuguese chatter, freebanders
26425 AM - Portuguese language chatter, very active
26445 AM - Italian language chatter
26465 AM - Italian language chatter
26465 FM - Russian LMR - taxi cab Russia YL dispatch
26475 AM - Data bursts
26484 USB - FSK signal, very strong
26495 FM - Weak FM two-way chatter
26500 FM - POCSAG paging signals - 26.5 MHz pager
26505 AM - Portuguese language chatter
26515 FM - Russian LMR - Russian taxis 26MHz
26525 AM - Spanish language chatter, informal comms with Roger beeps
26530 FM - 8-10 kHz wide data signal
26531 USB - FSK signals
26540 LSB - Spanish language
26541 USB - FSK signals
26545 AM - AM voice signals, getting obliterated by FSK/data
26555 LSB - Spanish language, very busy
26560 FM - Russian LMR - Russian taxi cabs
26565 AM - Italian language
26565 FM - German language - weak
26585 AM - Spanish language
26588 USB - FSK signals
26600 FM - POCSAG paging signals 26.6 MHz pager
26605 LSB - Weak voice, getting obliterated by POCSAG paging signals
26630 FM - POCSAG paging signals 26.63 MHz pager
26635 FM - Strong FM carrier
26645 FM - POCSAG paging signals pager
26650 FM - POCSAG paging signals pager
26655 FM - Data signal, not POCSAG, very strong
26655 FM - POCSAG paging signals pager
26666 USB - FSK signals
26675 LSB - Italian language chatter
26682 USB - FSK signals
26685 AM - UNID language, Portuguse? Weak
26687 USB - FSK signal
26695 FM - POCSAG paging signals - several signals mixing together, very strong
26700 FM - POCSAG paging signals
26705 FM - POCSAG paging signals
26715 AM - Spanish language chatter
26723 USB - FSK signals
26725 FM - Russian LMR - Russian taxi cabs
26725 USB - FSK signals
26735 FM - German language
26740 LSB - French language chatter
26745 FM - POCSAG paging signals, nonstop POCSAG
26750 FM - POCSAG paging signals
26755 FM - POCSAG paging signals
26760 LSB - Portuguese chatter
26772 USB - FSK signals
26775 FM - Weak FM two-way comms, UNID
26775 USB - FSK signals
26790 USB - FSK signals
26802 USB - FSK signals
26815 FM - French, very strong signals, 9-10 kHz bandwidth
26820 FM - Russian LMR - taxi cab Russia YL dispatch
26825 FM - Weak FM signals
26835 FM - Portuguese
26840 USB - FSK signals
26853 USB - FSK signals
26875 FM - Noted FM signal activity, UNID user
26885 AM - Italian language chatter, mixing with FM
26885 FM - Weak FM signals noted
26895 FM - German language chatter
26900 FM - POCSAG paging signals
26904 USB - FSK signal - nonstop
26915 AM - Italian language
26925 FM - FSK data bursts
26935 AM - Portuguese language, strong
26945 FM - FSK bursts
26947 USB - FSK signals
26950 FM - Paging signals
26950 FM - Data bursts
26955 FM - FSK data bursts, MFSK
26960 FM - Data bursts, basically nonstop
26965 FM - Lots of signals on top of each other
26975 FM - Lots of signals on top of each other
26990 USB - French language chatter, data QRM
26995 FM - FSK bursts
27003 FM - POCSAG paging
27007 FM - POCSAG paging
27035 FM - Portuguese
27035 AM - Spanish language
27055 AM - UNID language
27065 AM - Spanish language, very busy
27075 FM - German language
27085 AM - AM calling frequency
27100 USB - UNID language, Eastern Europe
27125 AM - UK stations working AM mode, heavy FM QRM
27125 FM - German chatter
27130 AM - Polish?
27135 AM - Heavy QRM
27155 LSB - SSB calling frequency
27185 FM - Lots of signals
27190 USB - Spanish language
27195 FM - Data signals, weak
27200 FM - POCSAG paging
27200 LSB - Portuguese
27205 FM - Very busy
27235 FM - Packet AX.25 signals
27245 FM - Packet AX.25 signals 
27250 FM - Russian language?
27255 FM - Packet AX.25 signals
27255 USB - FT8 data signals
27255 AM - Modulated CW signals (AM mode with carrier)
27275 USB - UNID language, multiple signals on top of each other
27290 USB - Italian
27295 FM - UK CB stations heard
27300 FM - POCSAG paging signals
27305 USB - Numerous signals mixing together
27305 FM - Heard several stations on top of each other
27315 FM - Similar to 27.305 MHz FM
27350 FM - POCSAG paging signals
27355 FM - Spanish language, very good signals
27360 FM - POCSAG paging signals
27375 FM - Italian, almost full quieting, with faint SSB QRM
27380 LSB - SSB chatter
27385 LSB - SSB calling frequency
27405 FM - Station talking about FM mode vs. SSB on channel 40 (UK station)
27415 FM - UNID two-way comms, possibly LMR
27425 AM - Italian
27435 LSB - Spanish language
27450 FM - FM carrier, with paging signals
27455 USB - Spanish, very bad QRM from 27.465 MHz AM
27465 AM - Italian - very strong signals
27480 USB - Portuguese chatter
27485 AM - UNID user, way too much QRM from nearby SSB
27490 USB - "wish you the best, 14FTxxx and 13 division station QSO
27500 FM - Carrier, keyed down for 5-6 seconds, then unkeyed, then another 2-3 seconds
27505 AM - Italian - also very strong
27505 FM - POCSAG paging signals - very strong - 12 kHz wide
27510 USB - "Alpha Delta" "Japan" heard (in English)
27525 FM - UNID language, FM two-way comms
27537 USB - Faint SSB voice signals on frequency
27550 FM - POCSAG paging signals
27551 USB - FSK signals, FSK bursts
27555 USB - International calling frequency
27580 FM - POCSAG paging signals
27585 FM - UNID FM two-way comms
27590 FM - Russian LMR - taxi cab Russia YL dispatch
27600 FM - On/off carrier (right on 27.600 MHz)
27601 FM - UK FM CB chatter - 27.60125 MHz FM UK FM CB Channel 1
27620 USB - French language
27635 FM - ROS data mode
27640 USB - Portuguese
27641 FM - UK FM CB channel - 27.64125 MHz FM UK FM CB Channel 5
27645 USB - Italian chatter
27650 FM - POCSAG paging signals
27651 FM - UK FM CB chatter - 27.65125 MHz FM UK FM CB Channel 6
27655 FM - Russian LMR - Russian taxi cabs
27671 FM - UK FM CB chatter - 27.67125 MHz FM UK FM CB Channel 8
27681 FM - UK FM CB chatter - 27.68125 MHz FM UK FM CB Channel 9
27700 USB - SSTV
27700 FM - POCSAG paging signals pager 27.7 MHz
27720 USB - Italian language comms, heavy fading
27735 USB - German language comms
27750 FM - POCSAG paging signals pager 27.75 MHz
27750 FM - Asian fishing fleet radio network radio chatter 27.825 MHz FM [CSQ]
27765 FM - German language chatter
27775 FM - Possibly Russian taxi cab or Russian CB chatter
27781 FM - UK FM CB chatter - 27.78125 MHz FM UK FM CB Channel 19
27791 FM - UK FM CB chatter - 27.79125 MHz FM UK FM CB Channel 20
27805 FM - Russian LMR - Russian taxi cabs
27825 FM - Asian fishing fleet radio network radio chatter 27.825 MHz FM [CSQ]
27845 FM - POCSAG paging signals
27850 FM - POCSAG paging signals
27860 FM - Russian LMR - Russian taxi cabs 
27885 FM - POCSAG paging signals
27900 FM - Asian fishing fleet radio network radio chatter 27.900 MHz FM [CSQ]
27901 FM - UK FM CB chatter - 27.90125 MHz FM UK FM CB Channel 31
27911 FM - UK FM CB chatter - 27.91125 MHz FM UK FM CB Channel 32
27915 FM - Russian LMR - Russian taxi cabs
27920 FM - Russian LMR - Russian taxi cabs
27941 FM - UK FM CB chatter, weak. 27.94125 MHz FM UK FM Channel 35
27950 FM - POCSAG paging signals
27951 FM - UK FM CB chatter - 27.95125 MHz FM UK FM CB Channel 36
27961 FM - UK FM CB chatter - 27.96125 MHz FM UK FM CB Channel 37
27965 USB - French language, busy
27971 FM - UK FM CB chatter - 27.97125 MHz FM UK FM CB Channel 38
27975 FM - Asian fishing fleet radio network radio chatter 27.975 MHz FM [CSQ]
27981 FM - UK FM CB chatter - 27.98125 MHz FM UK FM CB Channel 39
27985 USB - French, heavy FM QRM
27985 FM - Russian taxi cab dispatch - Russian land mobile radio LMR
27991 FM - UK FM CB chatter - 27.99125 MHz FM UK FM CB Channel 40
27997 USB - French language
28215 FM - Russian LMR - taxi cab Russia YL dispatch
28265 FM - Russian LMR - taxi cab Russia YL dispatch 25

183
Heard via the G8JNJ RaspSDR UK based online receiver.  Band opening up, 11m and 10m along with VHF low band starting to open. 

The usual chatter on 29.875 MHz - Asian fishermen comms fishing fleet radio network 29875 FM 29.8750 FM [CSQ] 29,875kHz FM 29.875MHz FM CSQ simplex FM no tone.  Good quality audio at around 1130 UTC. 

These guys are running the de facto standard "FM Fishery Radiotelephone" system - 480 channel, channelized high-HF/low-VHF 25 watt radios. 

27.500 MHz to 39.475 MHz.  Some list the coverage as 27.5 MHz - 39.5 MHz or 27.500 MHz to 39.500 MHz.  The standard version uses 25 kHz channel steps, with straight numbering sequence. 

27.500 MHz FM - Channel 1
27.525 MHz FM - Channel 2
27.550 MHz FM - Channel 3
27.575 MHz FM - Channel 4 and so on


29.875 MHz FM is Channel 100 on that channel plan.  I've noted activity on 27.750 MHz FM, 27.775 MHz FM, 27.900 MHz FM, 27.975 MHz FM, 28.000 MHz FM, 29.150 MHz FM, 29.700 MHz FM, 29.725 MHz FM, 29.750 MHz FM, 29.775 MHz FM, 29.825 MHz FM and many many others (including even more above 30 MHz). 

The radios do cover the entire 28 MHz - 29.7 MHz 10m amateur band, and they've been monitored in-band, but usually they seem to stay between 27.500 MHz and 28.000 MHz and 29.700 MHz and 39.475 MHz.

There are apparently some "export" versions of these rigs that reduce the channel spacing from 25 kHz to 12.5 kHz (and reduce the FM deviation from 4 kHz/5 kHz to 2.5 kHz), producing double the available channels.  The indications are that most users are running the 25 kHz channel band plan.  However, frequencies 29.8875 MHz FM, 29.9625 MHz FM, 30.3625 MHz FM, 32.1125 MHz FM, 32.1625 MHz FM, 32.1875 MHz FM and several others have had Asian fishing fleet traffic monitored on them.

With the band open almost every day now...I expect more of these systems will start appearing.   Japan still has their two DSB fishing fleet radio telephone systems (in other words, AM mode).  Double sideband fishery radiotelephone service.  There's the

1W DSB 27MHz service AM voice and data
(26760 kHz to 27988 kHz or 26.760 MHz to 27.988 MHz, odd steps)

5W DSB 40MHz service AM voice and data
39.008 MHz to 39.928 MHz transmit/receive, 8 kHz channel spacing
35.544 MHz to 35.928 MHz ship receive only 8 kHz channel spacing (shore transmit)

The reason for the 35 MHz - 36 MHz shore transmit frequencies is, I believe, for half-duplex or even full duplex ship-to-shore comms.  Various Japanese fishing companies fisheries have licenses for the 35-36 MHz frequencies and the 39-40 MHz frequencies - indicating that the 39MHz band is used for ship-to-ship and ship-to-shore comms. 

Japan also has a 25W SSB 27MHz fishery radio service 27.3105 MHz to 27.4705 MHz or 27310.5 kHz to 27470.5 kHz, odd spacing, USB mode.

South Korea has a fisheries radio service at 27 MHz as well: 27.508 MHz to 27.943 MHz.  Like the Japanese 1 watt DSB AM 27 MHz fishery radio service, the channel spacing is very random. 

Add to that the fact that numerous other Asia - Pacific countries with large fishing fleets have what they simply call "marine CB" or "boat CB radio".  Usually that means one of the following:

26.065 MHz to 28.755 MHz - AM, FM, USB and LSB modes
25.550 MHz to 30.500 MHz - AM, FM, USB and LSB modes
26.475 MHz to 27.275 MHz - AM mode (other variants include 25.550 MHz to 27.270 MHz, also AM mode)
25.615 MHz to 30.105 MHz - AM, FM, USB and LSB modes

The 26.065 MHz to 28.755 MHz and 25.615 MHz to 30.105 MHz versions are the most popular.  All of them appear to use 10 kHz spacing, just like regular old export CB radio.


184
1540 UTC first noted.  Strong to fair signal strength, 13-14 kHz wide at full deviation.  Via G8JNJ RaspSDR internet SDR receiver.  Frequency 29.875 MHz FM.  29.875MHz FM.  Possibly Japanese language.  Fishing fleets.  Asian fishery radio 29.875MHz. 

Also noting strong POCSAG paging signals on 29.8 MHz and 29.9 MHz. 

185
Listening via online SDR - G8JNJ RaspSDR.  1500 UTC

Noted polytone data bursts (on several of the frequencies, also there was POCSAG signals!) on the following frequencies:

31.325 MHz
31.3875 MHz
31.4375 MHz
31.475 MHz - POCSAG paging signals noted on this frequency as well
31.6875 MHz
31.900 MHz
31.925 MHz
31.975 MHz

186
Fishery radio networks, 27.500 MHz FM to 39.475 MHz FM - 25 kHz spacing.  Channelized, carrier squelch, simplex FM. 

31.125 MHz FM 31.1250 FM [CSQ] 31.125MHz FM active with Asian fishermen chatting at 1200 UTC 25-May-2023.  Via UK based RaspSDR G8JNJ SDR frequency 31.125 MHz mode NFM.  Fishery radio chatter 25w output.  31.1250 MHz FM CSQ is one of the more popular frequencies.

187
Via UK based SDR.

27975 kHz FM 27.9750 FM [CSQ] 27.975MHz FM 27.975 MHz FM Asian fishermen radio chatter 1130 UTC May 25 2023. 
Fishing trawler radio chatter 27.750 MHz 27.75MHz 27.975MHz 27,975 27,750.  27.500 MHz FM 39.500 MHz FM.  Channel 20 frequency 27.9750 FM

SIO 222 to SIO 333, some dramatic fading.  Asian fishing radio fleet radio network 27.500 MHz - 39.475 MHz FM.  Often listed as 27.5MHz - 39.5MHz or 27.500 MHz - 39.500 MHz.  25 kHz spacing.  Fully channelized.  25 watt transmit power, 16K0F3E / 16K0G3E voice emission, 300 baud or 1200 baud AFSK / MFSK data transmission - 16K0F1D 16K0G1D emissions 16K0F2D / 16K0G2D GPS location ship to ship individual vessel call.  Channel 1 is 27.500MHz, channel 2 is 27.525MHz, channel 3 is 27.550MHz, channel 4 is 27.575MHz, channel 6 is 27.600MHz and so on. 

System is carrier squelch only, single frequency simplex.  No PL/DPL (CTCSS/DCS) tone squelch in use.  Just regular old simplex FM with carrier squelch, although the data based selective calling is apparently heavily used for individual vessel call and receiver muting (similar to the HF SSB SELCAL system, apparently). 

Lots of activity in the 29 MHz band, 30 MHz band, 31 MHz band...but now they're also showing up in 27 MHz.  Logged similar activity on 27.750 MHz FM (with pager POCSAG QRM, UK FM CB radio QRM 27.75125 MHz FM and SSB freeband CBer QRM).  Russian taxi dispatcher land mobile radio QRM.  Minor UK FM CB QRM from 27.97125 MHz FM as well. 

188
Tuning around 11m band 27 MHz band this morning, noted strong POCSAG paging signals on 27.845 MHz 27845 kHz, nearly nonstop. 

I checked 26.945 MHz, 26.960 MHz and others and they're quiet. 

Now there's an off-frequency POCSAG signal centered on 27.847 MHz or 27.8475 MHz or 27.848 MHz.  Tunes fine on 27.850 MHz.  Noted POCSAG activity on 27.855 MHz as well.  Seems like 27850 kHz 27.85 MHz is the "center" frequency. 

Heard at approx. 1125 UTC on May 25 2023 via G8JNJ SDR in Wessex, UK.


189
Via G8JNJ RaspSDR at 1115 UTC (1215 local SDR receiver time).  27.75MHz.  27750 FM 27.7500 FM [CSQ] 27.750MHz Japanese fishing boat radio chatter 480 channel FM fishery radiotelephone.  27.5-39.5MHz 25w marine radio FM radiotelephone.  Dual mode signaling 300/1200 baud selective calling.  Carrier squelch only.

Fair to good signal on 27.7500 MHz FM [CSQ].  Some QRM from UK FM CB on 27.75125 MHz FM and SSB activity on 27.745 MHz and 27.755 MHz.  Weak POCSAG pager paging signal on 27.75 MHz as well. 


190
They popped up again on

27750 FM 27.750 MHz FM [CSQ]
27825 FM 27.825 MHz FM [CSQ]
27850 FM 27.850 MHz FM [CSQ]
27900 FM 27.900 MHz FM [CSQ]
27950 FM 27.950 MHz FM [CSQ]
27975 FM 27.975 MHz FM [CSQ]
28000 FM 28.000 MHz FM [CSQ]
28025 FM 28.025 MHz FM [CSQ]
28225 FM 28.225 MHz FM [CSQ]
28275 FM 28.275 MHz FM [CSQ]
28375 FM 28.375 MHz FM [CSQ]
28525 FM 28.525 MHz FM [CSQ]
29075 FM 29.075 MHz FM [CSQ]
29150 FM 29.150 MHz FM [CSQ]
29175 FM 29.175 MHz FM [CSQ]
29225 FM 29.225 MHz FM [CSQ]
29300 FM 29.300 MHz FM [CSQ]
29700 FM 29.700 MHz FM [CSQ]
29750 FM 29.750 MHz FM [CSQ]
29775 FM 29.775 MHz FM [CSQ]
29825 FM 29.825 MHz FM [CSQ]
29850 FM 29.850 MHz FM [CSQ]
29875 FM 29.875 MHz FM [CSQ]
29900 FM 29.900 MHz FM [CSQ]
29950 FM 29.950 MHz FM [CSQ]
29975 FM 29.975 MHz FM [CSQ]
30000 FM 30.000 MHz FM [CSQ]

and numerous frequencies above 30 MHz:


30025 FM 30.025 MHz FM [CSQ]
30075 FM 30.075 MHz FM [CSQ]
30100 FM 30.100 MHz FM [CSQ]
30150 FM 30.150 MHz FM [CSQ]
30200 FM 30.200 MHz FM [CSQ]
30225 FM 30.225 MHz FM [CSQ]
30275 FM 30.275 MHz FM [CSQ]
30300 FM 30.300 MHz FM [CSQ]
30500 FM 30.500 MHz FM [CSQ]
30550 FM 30.550 MHz FM [CSQ]
30575 FM 30.575 MHz FM [CSQ]
30750 FM 30.750 MHz FM [CSQ]
30775 FM 30.775 MHz FM [CSQ]
30800 FM 30.800 MHz FM [CSQ]
30825 FM 30.825 MHz FM [CSQ]
30875 FM 30.875 MHz FM [CSQ]
30900 FM 30.900 MHz FM [CSQ]
30975 FM 30.975 MHz FM [CSQ]
31000 FM 31.000 MHz FM [CSQ]
31025 FM 31.025 MHz FM [CSQ]
31075 FM 31.075 MHz FM [CSQ]
31100 FM 31.100 MHz FM [CSQ]
31150 FM 31.150 MHz FM [CSQ]
31200 FM 31.200 MHz FM [CSQ]
31300 FM 31.300 MHz FM [CSQ]
31400 FM 31.400 MHz FM [CSQ]
31425 FM 31.425 MHz FM [CSQ]
31500 FM 31.500 MHz FM [CSQ]
31550 FM 31.550 MHz FM [CSQ]
31650 FM 31.650 MHz FM [CSQ]
31700 FM 31.700 MHz FM [CSQ]
31775 FM 31.775 MHz FM [CSQ]
31800 FM 31.800 MHz FM [CSQ]
31825 FM 31.825 MHz FM [CSQ]
31900 FM 31.900 MHz FM [CSQ]
32000 FM 32.000 MHz FM [CSQ]
32175 FM 32.175 MHz FM [CSQ]
32200 FM 32.200 MHz FM [CSQ]
32225 FM 32.225 MHz FM [CSQ]
32750 FM 32.750 MHz FM [CSQ]
33000 FM 33.000 MHz FM [CSQ]
33200 FM 33.200 MHz FM [CSQ]
33425 FM 33.425 MHz FM [CSQ]
33500 FM 33.500 MHz FM [CSQ]
33750 FM 33.750 MHz FM [CSQ]
33900 FM 33.900 MHz FM [CSQ]



29.150 MHz FM seems to be quite popular, same with 27.750 MHz FM, 29.775 MHz FM, 29.825 MHz FM, 29.875 MHz FM (which had music playing on it at one point, basically their version of "peskie party radio"!).  30.750 MHz, 30.775 MHz, 30.800 MHz, 31.100 MHz and 31.800 MHz are active almost daily with fishing fleet chatter. 

191
Via the UK based G8JNJ RaspSDR. 

1430 UTC.

Asian fishery radio 27.975 MHz FM 27975 kHz FM 27.9750 MHz FM [CSQ]

Noted the usual Asian fishermen radio chatter on 29.875 MHz FM, but they're also on 27.975 MHz FM.  I imagine they're also operating within 10 meters. 

Yep, they've also active on 27.750 MHz FM, 27.925 MHz FM, 29.775 MHz FM, 29.825 MHz FM, 29.875 MHz FM, 29.950 MHz FM, 29.975 MHz FM, 30.000 MHz FM and others. 

192
Via the UK based RaspSDR G8JNJ SDR.

Time: 1350 UTC.  Frequency: 29.8750 MHz FM.  Asian fishery radio chatter 29.8750 FM Fishery radio marine radiotelephone fishing boat radio FM 480channel 480CH 480 channel FT-801 fishery radio fishing boat radio VHF low band 31.1 MHz 31.125MHz FM 27.750 MHz FM 27.975MHz 28.000 MHz FM UNID

Strong Asian language chatter on 29.875MHz FM 29.8750 FM [CSQ] 29875 kHz FM.  Previously monitored active on this frequency, among many others.  29.775 MHz, 29.800 MHz, 29.825 MHz, 29.975 MHz, 30.000 MHz, 30.100 MHz, 30.225 MHz, 30.300 MHz, 30.750 MHz, 30.775 MHz, 30.800 MHz, 31.000 MHz, 31.025 MHz, 31.050 MHz, 31.075 MHz, 31.100 MHz and several others.  Usually 31.1 MHz FM is the busiest. 

These radios have proliferated worldwide.  480 channels, 27.500 MHz FM to 39.475 MHz FM.  25 watt power output.




193
Above 29.7 MHz, tune in time: 1655 UTC.

29.7050 MHz FM - Russian taxi cab dispatcher
29.7500 MHz FM - FM signals noted, unable to ID - possibly land mobile (business)
29.7500 MHz FM - POCSAG paging signals
29.7750 MHz FM - Fishery radio chatter, Asian fishery radio
29.8000 MHz FM - POCSAG paging signals
29.8250 MHz FM - Fishery radio chatter, Asian fishery radio - with data bursts
29.8500 MHz FM - POCSAG paging signals - basically nonstop
29.9000 MHz FM - POCSAG paging signals - sporadic
29.9250 MHz FM - Fishery radio chatter, Asian fishery radio
29.9650 MHz FM - Russian language chatter
30.0000 MHz FM - Carrier signal - seems to always be there
30.0550 MHz FM - Russian taxi cab dispatcher
30.1000 MHz FM - POCSAG bursts, 16-20 kHz wide
30.2200 MHz FM - POCSAG Pager - Canadian hospital on-site paging with CW ID
30.2250 MHz FM - Fishery radio chatter, Asian fishery radio
30.3000 MHz FM - Fishery radio chatter, Asian fishery radio
30.4250 MHz FM - Fishery radio chatter, Asian fishery radio
30.5800 MHz FM - US land mobile comms, sounds like construction
30.7750 MHz FM - Fishery radio chatter, Asian fishery radio
30.8000 MHz FM - Fishery radio chatter, Asian fishery radio
30.9000 MHz FM - Paging bursts
30.9000 MHz FM - Fishery radio chatter, Asian fishery radio
31.0000 MHz FM - Fishery radio chatter, Asian fishery radio
31.1000 MHz FM- Fishery radio chatter, Asian fishery radio
31.1200 MHz FM - US land mobile radio - bus dispatch
31.1500 MHz FM - Pager - POCSAG signals - Greek paging freq?
31.2000 MHz FM - Data bursts
31.2000 MHz FM - Spanish language LMR - likely taxi cab dispatcher out of Costa Rica
31.3250 MHz FM - French traffic signal control data
31.4500 MHz FM- Paging bursts
31.4500 MHz FM - Fishery radio chatter
31.4800 MHz FM - US land mobile radio comms
31.5000 MHz FM - Fishery radio chatter, Asian fishery radio
31.5750 MHz FM - Continuous FSK data carrier
31.5750 MHz FM - Fishery radio chatter, Asian fishery radio
31.6000 MHz FM - Fishery radio chatter, Asian fishery radio
31.6875 MHz FM - French traffic signal control data
31.7000 MHz FM - Fishery radio chatter, Asian fishery radio
31.7250 MHz FM - UK on site hospital paging - POCSAG pager bursts
31.7500 MHz FM - UK on site hospital paging - POCSAG pager bursts
31.7750 MHz FM - Fishery radio chatter, Asian fishery radio
31.7750 MHz FM - UK on site hospital paging - POCSAG pager bursts
31.8000 MHz FM - Fishery radio chatter, Asian fishery radio
31.9125 MHz FM - Russian language
31.9250 MHz FM - Fishery radio chatter, Asian fishery radio
32.0000 MHz FM - Fishery radio chatter, Asian fishery radio
32.1750 MHz FM - Fishery radio chatter, Asian fishery radio
32.1800 MHz FM - Spanish language LMR - likely taxi cab dispatcher out of Costa Rica
32.3500 MHz FM - Fishery radio chatter, Asian fishery radio
32.7750 MHz FM - Fishery radio chatter, Asian fishery radio
32.9400 MHz FM - Spanish language LMR - likely taxi cab dispatcher out of Costa Rica, strong signals
32.9800 MHz FM - Spanish language LMR - Costa Rican taxi cab dispatcher
33.0000 MHz FM - UNID data signal - bursts
33.0250 MHz FM - Fishery radio chatter, Asian fishery radio
33.0600 MHz FM - "unable to, due to an early dismissal" - US land mobile, school bus dispatcher
33.1000 MHz FM - US land mobile - bus dispatch
33.1000 MHz FM - Fishery radio chatter, Asian fishery radio
33.3800 MHz FM - "pull right up..." "satellite" "right" - US LMR radio comms
33.4400 MHz FM - US fire rescue dispatch comms 33 MHz
33.5600 MHz FM - US fire rescue dispatch comms 33 MHz
33.6800 MHz FM - US fire rescue dispatch comms 33 MHz
33.7000 MHz FM - US fire rescue dispatch comms 33 MHz
33.7500 MHz FM - POCSAG paging bursts
33.7600 MHz FM - US fire rescue dispatch comms 33 MHz
33.8800 MHz FM - US fire rescue dispatch comms 33 MHz
33.9400 MHz FM - US fire rescue dispatch comms 33 MHz
34.0375 MHz FM - French LMR radio comms with MDC1200 bursts
34.1125 MHz FM - French LMR radio comms with MDC1200 bursts
34.3500 MHz FM - POCSAG paging bursts
34.3625 MHz FM - French LMR radio comms with MDC1200 bursts
34.5250 MHz FM - French LMR radio chatter
34.5750 MHz FM - French LMR radio chatter
34.7875 MHz FM - French LMR - Autoroute radio system *maybe"
34.9125 MHz FM - French LMR - Autoroute radio system
35.1125 MHz FM - French LMR - Autoroute radio system
35.2375 MHz FM - French LMR - Autoroute radio system
35.2625 MHz FM - French LMR - Autoroute radio system
35.3000 MHz FM - French LMR - Autoroute radio system
35.3125 MHz FM - French LMR - Autoroute radio system
35.3000 MHz FM - French LMR - Autoroute radio system
35.3375 MHz FM - French LMR - Autoroute radio system
35.4250 MHz FM - French LMR - Autoroute radio system
35.4375 MHz FM - French LMR - Autoroute radio system
35.4400 MHz FM - POCSAG paging - likely from the US going by frequency
35.4625 MHz FM - French LMR - Autoroute radio system
35.4875 MHz FM - French LMR - Autoroute radio system
35.5000 MHz FM - Pager - POCSAG bursts
35.5125 MHz FM - French LMR - Autoroute radio system
35.5375 MHz FM - French LMR - Autoroute radio system
35.5500 MHz FM - Paging signals - POCSAG
35.5500 MHz FM - French LMR - Autoroute radio system
35.5875 MHz FM - French LMR - Autoroute radio system
35.6000 MHz FM - French LMR - Autoroute radio system
35.6125 MHz FM - French LMR - Autoroute radio system
35.6625 MHz FM - French LMR - Autoroute radio system
35.6875 MHz FM - French LMR - Autoroute radio system
35.7250 MHz FM - Fishery radio chatter, Asian fishery radio
35.7375 MHz FM - French LMR - Autoroute radio system
35.7500 MHz FM - French LMR - Autoroute radio system
35.7600 MHz FM - US LMR - Business Radio
35.8200 MHz FM - "10-4, back down" - US land mobile business LMR
35.8200 MHz FM - POCSAG paging signals mixing with FM voice
35.8375 MHz FM - French LMR - Autoroute radio system
35.8500 MHz FM - French LMR - Autoroute radio system
35.8625 MHz FM - French LMR - Autoroute radio system
35.8750 MHz FM - French LMR - Autoroute radio system
35.8875 MHz FM - French LMR - Autoroute radio system
35.9000 MHz FM - US LMR - Business radio comms
35.9125 MHz FM - French LMR - Autoroute radio system
35.9625 MHz FM - French LMR - Autoroute radio system
35.9750 MHz FM - French LMR - Autoroute radio system
35.9875 MHz FM - French LMR - Autoroute radio system
36.0500 MHz FM - French LMR - Autoroute radio system
36.1625 MHz FM - French LMR - Autoroute radio system
36.2500 MHz FM - Paging bursts - POCSAG pager

194
Via UK based SDR

Lots and lots of Russian taxi cabs, including in 10 meters.  Russian taxi cabs all over 10 meters, 28 MHz, 29 MHz, full of FM two-way radio comms - all in Russian.  Even in the extremely busy SSB phone subband portion of 10 meters. 

Russian taxi cabs all over 10 meters and 11 meters - tuned in at 1635 UTC, tuned out at 1650 UTC.

Russian taxi cab land mobile comms on 10 meters 28MHz band

28.005 MHz FM - Russian taxi cab dispatcher
28.025 MHz FM
28.065 MHz FM - Russian taxi cab dispatcher
28.095 MHz FM
28.105 MHz FM
28.115 MHz FM
28.125 MHz FM
28.135 MHz FM - Russian taxi cab dispatcher and taxi cabs heard replying to her
28.145 MHz FM
28.175 MHz FM
28.210 MHz FM
28.245 MHz FM
28.250 MHz FM
28.255 MHz FM
28.265 MHz FM - Russian taxi cab - very very strong SIO 555
28.275 MHz FM
28.295 MHz FM
28.305 MHz FM
28.335 MHz FM
28.375 MHz FM
28.395 MHz FM
28.405 MHz FM
28.505 MHz FM - getting obliterated by all the SSB activity between 28.3 and 28.7 MHz
28.525 MHz FM
28.555 MHz FM
28.565 MHz FM
28.605 MHz FM
28.625 MHz FM
28.700 MHz FM
28.755 MHz FM
28.765 MHz FM
28.975 MHz FM
28.905 MHz FM
28.975 MHz FM
29.005 MHz FM
29.010 MHz FM
29.015 MHz FM
29.055 MHz FM
29.250 MHz FM - Paging signal!????
29.275 MHz FM
29.375 MHz FM
29.525 MHz FM
29.625 MHz FM
29.655 MHz FM
29.675 MHz FM
29.705 MHz FM

And on 11m:

27.995 MHz FM - with heavy QRM from guys on 28.000 MHz LSB!
27.985 MHz FM
27.975 MHz FM
27.965 MHz FM
27.955 MHz FM -
27.950 MHz FM - Strong POCSAG paging signal mixing with taxi dispatch
27.915 MHz FM
27.905 MHz FM
27.900 MHz FM
27.895 MHz FM
27.885 MHz FM
27.885 MHz FM - Very very strong POCSAG signal on frequency
27.875 MHz FM
27.855 MHz FM
27.835 MHz FM
27.825 MHz FM
27.820 MHz FM
27.815 MHz FM - full scale
27.805 MHz FM
27.795 MHz FM
27.785 MHz FM - heavy QRM with UK FM CB channel 19 on 27.781.25 MHz FM
27.775 MHz FM
27.755 MHz FM
27.745 MHz FM
27.725 MHz FM
27.705 MHz FM
27.695 MHz FM
27.675 MHz FM
27.665 MHz FM
27.645 MHz FM

195
1430 UTC tune in, 1455 tune out. - lots of Asian fishing fleet radio comms (27.5 MHz - 39.475 MHz 25 kHz spacing for 480 channels, FM mode, carrier squelch).  Apparently an "export" variant exists that narrows the channel spacing from 25 kHz to 12.5 kHz.

29.8000 MHz FM - POCSAG paging signals POCSAG pager
29.8250 MHz FM - Asian fishery radio - 29.8250 MHz FM [CSQ] Asian fishing fleets
29.9000 MHz FM - POCSAG paging signals POCSAG pager
30.0000 MHz FM - FM carrier - does not appear to be a military signal (narrower FM than usual mil signals)
30.0250 MHz FM - Asian fishery radio - 30.0250 MHz FM [CSQ] Asian fishing fleets
30.3000 MHz FM - Asian fishery radio - 30.3000 MHz FM [CSQ] Asian fishing fleets
30.3250 MHz FM - Asian fishery radio - 30.3250 MHz FM [CSQ] Asian fishing fleets
30.5500 MHz FM - Asian fishery radio - 30.5500 MHz FM [CSQ] Asian fishing fleets 
30.7600 MHz FM - US land mobile - automatic CW ID (Morse code ID)
30.7250 MHz FM - Asian fishery radio - 30.7250 MHz FM [CSQ] Asian fishing fleets
31.1000 MHz FM - Asian fishery radio - 31.1000 MHz FM [CSQ] Asian fishing radio chatter
31.1500 MHz FM - Pager - burst transmissions
31.1600 MHz FM - US land mobile - sounds like business comms
31.2000 MHz FM - OTHR Over The Horizon Radar - very strong - 30-35 kHz wide
31.3250 MHz FM - French traffic control system data link  - poly tone data signal
31.4000 MHz FM - Asian fishery radio - 31.4000 MHz FM [CSQ] Asian fishing fleets
31.5750 MHz FM - "Chirp" carrier - rapidly changing frequencies within a 5-10 kHz window
31.6000 MHz FM - Asian fishery radio - very busy 31.6000 MHz FM [CSQ] Asian fishing fleets
31.6875 MHz FM - French traffic control system data link - poly tone data signal
31.7250 MHz FM - UK On Site Hospital paging systems - POCSAG pager signals
31.7500 MHz FM - UK On Site Hospital paging systems - POCSAG pager signals - busiest freq
31.7750 MHz FM - UK On Site Hospital paging systems - POCSAG pager signals
31.8000 MHz FM - Asian fishery radio - 31.8000 MHz FM [CSQ] Asian fishing fleet radio chatter
31.9750 MHz FM - French traffic control system data link  - poly tone data signal
32.4000 MHz FM - Data bursts - multi-frequency shift keying
32.4500 MHz FM - Asian fishery radio - 32.4500 MHz FM [CSQ] Asian fishing fleet radio chatter
33.3000 MHz FM - Asian fishery radio - 33.3000 MHz FM [CSQ] Asian fishing fleet radio chatter
33.4250 MHz FM - Asian fishery radio - 33.4250 MHz FM [CSQ] Asian fishing fleet radio chatter
33.5600 MHz FM - US fire rescue dispatch and operational comms
33.7400 MHz FM - US fire rescue dispatch
33.7500 MHz FM - POCSAG paging bursts - very short bursts
33.8000 MHz FM - US fire rescue dispatch
33.8600 MHz FM - US fire rescue dispatch with tone outs
33.9000 MHz FM - US fire rescue dispatch "600 East..." "...601" (possible callsign)
33.9400 MHz FM - US fire rescue dispatch
33.9800 MHz FM - US fire rescue dispatch
34.6875 MHz FM - French language - land mobile radio comms
34.7625 MHz FM - French language - land mobile radio comms
34.8250 MHz FM - Data bursts - maybe a pager?
34.8750 MHz FM - French language, weak
35.2250 MHz FM - French Autoroute voice + data radio system
35.2375 MHz FM - Data signal - very strong
35.5500 MHz FM - POCSAG pager paging signal 35.550 MHz FM
35.7600 MHz FM - US land mobile (business comms)
35.8200 MHz FM - US land mobile (business comms)
35.8250 MHz FM - French Autoroute voice + data radio system
35.9875 MHz FM - French Autoroute voice + data radio system
36.0500 MHz FM - Data signal - with FM voice underneath?
36.1000 MHz FM - Digital signals - characteristic of digitally encrypted military comms

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