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Topics - R4002

Pages: [1] 2 3 4 5 6 7 8 9 ... 107
1
11 meter shortwave broadcast band 25.9 MHz 25900 kHz AM 25,900 25.900.0 MHz AM at 1205 UTC.  Nice strong signal, some very minor fades. 

Signal strength a nice solid S7, peaking S9...deepest fades down to S5. 

SIO 444, overall very much armchair signal.  Coming in on a handheld receiver with a 27 MHz CB 11m/10m band antenna (telescopic base loaded antenna, 51" full length).  Also coming in on another telescopic base loaded CB antenna, 27" Cobra HA-TA, 25.5 MHz to 30.4 MHz resonance. 

Location: Richmond, VA

2
Hearing a good amount of Caribbean and Latin American activity this morning, just before 1200 UTC on 07/12/2024 12-July-2024.

27515 LSB 27.515 MHz LSB - Caribbean area calling frequency, busy
27455 USB 27.455 MHZ USB - Latin American SSB calling frequency, nonstop activity

26735 AM 26.735 MHz AM - American truckers using export radios "freeband" Channel 19 down one band
26705 AM 26.705 MHz AM - Spanish language signals starting to fade in at 1203 UTC
26675 LSB 26.675 MHz LSB - Spanish language chatter, sporadic activity
26615 AM 26.615 MHz AM - Spanish language freeband CB radio signals
26605 LSB 26.605 MHz LSB - Spanish speaking stations, likely QSY'ed from 26.555MHz LSB
26605 AM 26.605 MHz AM - AM voice signals on frequency as well as the SSB, some QRM
26555 LSB 26.555 MHz LSB - Latin American SSB calling frequency, nonstop activity
26545 LSB 26.545 MHz LSB - Spanish speaking stations, likely QSY'ed from 26.555MHz LSB
26540 LSB 26.540 MHz LSB - Spanish speaking stations, likely QSY'ed from 26.555MHz LSB 
26535 LSB 26.535 MHz LSB - Sporadic SSB activity, Spanish language
26525 LSB 26.525 MHz LSB - Very busy with Latin American stations, almost as busy at 27.455 USB or 26.555 LSB 


3
VHF low band DX
Via UK based SDR receiver

See below for the result of my research, 40.875 MHz, 40.900 MHz, 40.925 MHz and 40.950 MHz are allocated to on-site paging systems in Spain.  Power output is limited to 5 watts.  Channel bandwidth is 25 kHz. 

40 MHz paging multitone paging activity noted at 1745 UTC, tuned in again at 1752 UTC and there are various paging (sounds like POCSAG, likely narrower deviation variant...most signals are 8.5 kHz bandwidth, 9 kHz bandwidth...10 kHz at the most) signals. 

40,875 MHz 40875kHz paging 40875 FM is apparently assigned to 5 watt on site paging services, including hospital paging pager systems.  Internet searching resulted in me finding a Spanish language scanner forum focused on Spain itself and found this (machine-translated)

"Hello,

I am receiving a signal that seems to me to be POSAG at 40.875 Mhz, I do not usually scan these frequencies because I thought they had no activity, looking at CNAF I read: "Radio search in closed areas 5W", Could it be a search for a hospital or center nearby?. And I tried using the PDW program but without results, although I have never had results with this program, I may have it configured incorrectly. Let's see if someone can confirm that they also receive it and if they can decode it.

I am in the Mostoles area (Madrid).

Greetings
Santiago"

Original Spanish

"Buenas,

Estoy recibiendo una señal que me parece POSAG en 40,875 Mhz, no suelo escanear por estas frecuencias porque creia que no tenian actividad, mirando en CNAF leo: "Radio busqueda en recintos cerrados 5W", ¿Podrian ser buscas de algun hospital o centro cercano?. E intentado usar el programa PDW pero sin resultados, aunque no he optenido nunca resultados con este programa, puede que lo tenga mal configurado. Haber si alguien puede confirmar que tambien lo recibe y si lo puede decodificar.

Estoy en la zona de Mostoles (Madrid).

Saludos
Santiago"

Another reply to the same thread indicated that it is actually not POCSAG at all, not even POCSAG 512, but Multitone Paging:

https://www.sigidwiki.com/wiki/Multitone_Paging

CNAF is almost certainly "Cuadro Nacional de Atribución de Frecuencias"

In Spanish:

UN-12 Radiobúsqueda en 40 MHz.

Los canales cuyas frecuencias se indican a continuación se destinan exclusivamente para el servicio de radiobúsqueda en recintos cerrados y en sus inmediaciones:

40,875 MHz   40,900 MHz
40,925 MHz   40,950 MHz
La potencia radiada aparente (p.r.a.) máxima será de 5 W y la anchura de banda de emisión máxima la correspondiente a una canalización de 25 kHz.

UN-13 Aplicaciones ICM en 40 MHz

And in English:

UN-12 40 MHz Paging.

The channels whose frequencies are indicated below are intended exclusively for paging services in enclosed areas and in their immediate vicinity:

40.875 MHz   40.900 MHz
40.925 MHz   40.950 MHz
The maximum apparent radiated power (e.r.p.) will be 5 W and the maximum emission bandwidth will be that corresponding to a 25 kHz channel.


Source:

https://www.boe.es/buscar/act.php?id=BOE-A-2021-21346


Also of interest is this:

UN-7 Land Mobile Service on 27 MHz.

The channels whose frequencies are indicated below are intended exclusively for the land mobile service.  Power output limited to 20 watts.

27.505 MHz
27.515 MHz
27.525 MHz   
27.535 MHz   
27.545 MHz
27.555 MHz
27.565 MHz
27.575 MHz
27.585 MHz
27.595 MHz
27.845 MHz
27.855 MHz

The maximum apparent radiated power (ERP) will be 20 W and the maximum emission bandwidth will be that corresponding to a 10 kHz channel.

UN-8 Low power applications at 30 MHz.

Frequencies reserved for remote control and remote measurement outside the "ICM" bands under the consideration of common use:

29.710 MHz   29.900 MHz   30.125 MHz
29.720 MHz   29.910 MHz   30.135 MHz
29.730 MHz   29.920 MHz   30.145 MHz
29.740 MHz   29.930 MHz   30.155 MHz
29.750 MHz   29.940 MHz   30.165 MHz
29.760 MHz   29.950 MHz   30.175 MHz
29.770 MHz   29.960 MHz   30.185 MHz
29.780 MHz   29.970 MHz   30.195 MHz
29.790 MHz   29.980 MHz   30.205 MHz
29,800 MHz   29.990 MHz   30.215 MHz
29.810 MHz   30.035 MHz   30.225 MHz
29.820 MHz   30.045 MHz   30.235 MHz
29.830 MHz   30.055 MHz   30.245 MHz
29.840 MHz   30.065 MHz   30.255 MHz
29.850 MHz   30.075 MHz   30.265 MHz
29.860 MHz   30.085 MHz   30.275 MHz
29.870 MHz   30.095 MHz   30.285 MHz
29.880 MHz   30.105 MHz   30.295 MHz
29.890 MHz   30.115 MHz   -
The first three channels, frequencies 29.710 MHz, 29.720 MHz, and 29.730 MHz, will be used primarily for leisure and recreational applications including voice transmissions, i.e., non-industrial uses and non-professional applications.

The separation between adjacent channels is 10 kHz. The maximum output power of the equipment will be 500 mW and the maximum authorized emission limit will be 100 mW.

UN-2 27 MHz Paging Radio. 

The frequencies listed below are intended exclusively for paging services in enclosed areas and their immediate vicinity.  Just like the 40.875 MHz, 40.900 MHz, 40.925 MHz and 40.950 MHz allocation, these frequencies are on site pager paging systems, including hospital pagers, 25 kHz bandwidth limit. 

26.200 MHz
26.350 MHz
26.500 MHz
27.425 MHz
27.450 MHz
27.475 MHz

The maximum apparent radiated power  will be 5 W and the maximum emission bandwidth will be that corresponding to a 25 kHz channel.

4
Received via online receivers in Europe and the UK. 

First noted on 07 July 2024 07/07/2024, identical signals simulcasted on three frequencies at once, specifically CB radio channels 37, 39 and 40

Frequencies

27.375 MHz FM 27,375 FM Channel 37 Kanal 37 C37E FM mid band FM channel 37 FM
27.395 MHz FM 27,395 FM Channel 39 Kanal 39 C39E FM mid band FM channel 39 FM
27.405 MHz FM 27,405 FM Channel 40 Kanal 40 C40E FM mid band FM channel 40 FM

Signals noted on 7 July were all German language chatter.

As of right now, via the G8JNJ SDR (UK based SDR) at 1735 UTC / 1736 UTC, I am hearing identical signals on 27.395MHz FM and 27.405MHz FM....27375 is very weak and has lots of AM, FM and SSB QRM so I'm presuming propagation just isn't as insane as it was two days ago.

At 1738 UTC, 27405 became unusable due to very strong QRM (Italian CB radio chatter) in FM mode.  Shortly thereafter, the same thing happened on 27395, with AM voice signals obliterating the FM signal underneath.  Very strong Italian CB signals at 1739 UTC, peaking at S9, S9+10dB or even higher channel 39 AM.

Considering the fact that there are numerous signals that are not being repeated...I would presume (assume?) that this system, like the 26 MHz network(s), make extensive use of CTCSS tones (PL tone squelch). 

Still, I am fascinated by the number of these systems popping up all over the place now.  I know simplex repeaters (parrot repeaters) are nothing new, especially in Russia, Ukraine, Belarus and elsewhere in Eastern Europe...and now Central and Western Europe...

Well, now that you can get a multi-band mobile CB with AM and FM capability for under $80 and it happens to have the same 2-pin audio connector on the front panel that Baofeng, etc. radios have, a SureCom SR-112 or Radio-Tone RT-SRC1+ simplex repeater controller (with the standard Baofeng / Kenwood audio connector cable assembly), a power supply, an external antenna and a modest amplifier...and you'd have yourself a nice CB repeater. 


5
Talking about Bloomington, Illinois on 27535 kHz AM.  Listening via the W3HFU SDR (900 Foot Sky Loop Antenna).

27.535MHz AM truckers using export radios outside legal CB band freeband CB radio activity trucker CB radio chatter 27,535 27535.0 kHz AM

Two or three guys active on frequency, channel 11 up one band.  Lots of AM activity above channel 40 right now..

6
Not sure where these guys are located but there are at least 4-5 different stations having a roundtable-like net on 27575 AM.  Tuned in at 1740 UTC.  Still coming in nicely at 1742 UTC. Talking about antenna installation, especially base antennas...going to work, chickens in the coop...other agricultural related discussion. 

Strongest signal S5-S6, weakest S3-S4 or so.  Great sounding AM signals all around...no overmodulation, bandwidth at peaks exactly what it should be. 

Southern accents, but not too deep south if that makes sense.  Talking about one stations' elevation.  Seems like there's numerous stations on frequency, discussion about another station lurking on the side.  Heard "Bass Smasher" or "Bassmaster" (??) handle

Carrier frequencies are right about on the money:

27575.025
27574.950
27574.980
27574.965
27574.972
27575.038
27574.991
27574.960

All within 100 Hz of the 27575.0 center frequency.  Pretty darn good, especially if they're running modified CB gear vs. export rigs.


7

Hearing the same QSO on the following frequencies at the exact same time via the excellent G8JNJ SDR online receiver. 

1900 UTC
3 July 2024

26935 FM - 26.935 MHz FM - Channel 78 - Kanal 78
26865 FM - 26.865 MHz FM - Channel 71 - Kanal 71 - designated as an Internet gateways channel
26855 FM - 26.855 MHz FM - Channel 70 - Kanal 70
26845 FM - 26.845 MHz FM - Channel 69 - Kanal 69
26835 FM - 26.835 MHz FM - Channel 68 - Kanal 68 - unofficially, this is very popular as a gateway / online radio network access freq
26815 FM - 26.815 MHz FM - Channel 66 - Kanal 66
26765 FM - 26.765 MHz FM - Channel 61 - Kanal 61 - designated as an Internet gateways channel
26755 FM - 26.755 MHz FM - Channel 60 - Kanal 60 - designated as an Internet gateways channel
26705 FM - 26.705 MHz FM - Channel 55 - Kanal 55

I know there are a lot of remote sites on this system.  Most, if not all of them, use CTCSS tone squelch (PL).  67.0 Hz, 77.0 Hz, 85.4 Hz, 88.5 Hz, 94.8 Hz, 100.0 Hz and 103.5 Hz are all known to be in use.  I believe there is some use of DCS (DTCS or DPL) as well. 


At 1905 UTC, 26.835 and 26.935 are the strongest.  5 minutes before, 26,835 MHz FM and 26,855 MHz FM were the two strongest by a significant margin. 

At 1906 UTC, 26.855 MHz started suffering from severe QRM, in both AM mode and FM mode.  26.855 MHz AM consisted of Italian language chatter.  Very strong signals at 1906 UTC - 1907 UTC.

8
Via UK based SDR receiver
G8JNJ SDR
1855 UTC tune in

Some fair to weak UK FM CB channel 19 chatter, frequency 27781 FM 27.78125 MHz FM 27,781.25 FM suffering from heavy QRM from Spanish language taxi cab dispatcher traffic land mobile comms taxi cab controllers on 27.785MHz AM 27785 AM. 

Latin American signals already starting to fade in at this time, now just a minute shy of 1900 UTC on July 3, 2024.

9
29900 kHz FM 29,900 FM 29.9 MHz 29.900MHz 29,900 MHz FM POCSAG paging signals heard very clearly at 1840 UTC on the G8JNJ remote Internet based SDR receiver.

29.750 MHz, 29.800 MHz and 29.900 MHz are well-known to be used for POCSAG pager systems, location is unknown.  Unidentified source.  Unlike the Canadian hospitals on 30020 and 30220 - 30.0200 MHz and 30.2200 MHz, which transmit a Morse code ID (CWID) in NFM, the pagers on 29750 kHz, 29800 kHz and 29900 kHz have never transmitted any sort of ID.

29.9 MHz appears to be active at/around the same time POCSAG signals are also coming in on 30.100 MHz FM, 30.875 MHz FM and 30.900 MHz FM, along with various 26-28 MHz frequencies:

26.200 MHz
26.220 MHz
26.225 MHz
26.250 MHz
26.260 MHz
26.300 MHz
26.350 MHz
26.400 MHz
26.410 MHz
26.415 MHz
26.450 MHz
26.500 MHz
26.550 MHz
26.600 MHz
26.605 MHz
26.610 MHz
26.615 MHz
26.625 MHz
26.630 MHz
26.635 MHz
26.645 MHz
26.650 MHz
26.655 MHz
26.670 MHz
26.685 MHz
26.695 MHz
26.700 MHz
26.705 MHz
26.735 MHz
26.740 MHz
26.745 MHz
26.750 MHz
26.755 MHz
26.760 MHz
26.765 MHz
26.785 MHz
26.815 MHz
26.835 MHz
26.850 MHz
26.885 MHz
26.900 MHz
26.905 MHz
26.915 MHz
26.925 MHz
26.945 MHz
26.950 MHz
26.955 MHz
26.960 MHz
26.965 MHz - CB Radio Channel 1
26.990 MHz
26.995 MHz
27.000 MHz
27.005 MHz - CB Radio Channel 4
27.010 MHz
27.040 MHz
27.045 MHz
27.050 MHz
27.055 MHz - CB Radio Channel 8
27.080 MHz
27.090 MHz
27.095 MHz
27.100 MHz
27.120 MHz - ISM center frequency 27.12MHz 27,120 MHz
27.125 MHz - CB Radio Channel 14
27.145 MHz
27.150 MHz
27.190 MHz
27.195 MHz
27.200 MHz
27.230 MHz
27.235 MHz - CB Radio Channel 24
27.245 MHz - CB Radio Channel 25
27.250 MHz
27.255 MHz - CB Radio Channel 23 / RCRS data channel
27.300 MHz
27.350 MHz
27.360 MHz
27.400 MHz
27.410 MHz
27.420 MHz
27.425 MHz
27.430 MHz
27.450 MHz
27.470 MHz
27.475 MHz
27.490 MHz
27.500 MHz
27.505 MHz
27.510 MHz
27.550 MHz
27.600 MHz
27.625 MHz
27.635 MHz
27.640 MHz
27.645 MHz
27.650 MHz
27.655 MHz
27.675 MHz
27.700 MHz
27.720 MHz
27.750 MHz
27.760 MHz
27.800 MHz
27.845 MHz
27.850 MHz
27.885 MHz
27.900 MHz
27.940 MHz
27.950 MHz

10
Tune in time:  1200 UTC 1200z
G8JNJ SDR VHF low band 11 meter DX SDR FlydogSDR


26.350 MHz FM 26,350 FM - Data bursts, narrow band - 5 kHz or so wide
26.500 MHz FM 26,500 FM - POCSAG or sounds like POCSAG sounds paging 11-12 kHz bandwidth
26.600 MHz FM 26,600 FM - POCSAG paging signals, 10-12 kHz bandwidth
26.605 MHz FM 26,605 FM - POCSAG paging signals, very busy, various signal strengths known pager freq
26.705 MHz FM 26,705 FM - Data bursts, 6-7 kHz bandwidth
26.735 MHz FM 26,735 FM - Paging signals, narrow bandwidth POCSAG with "lead-in" unmodulated FM carrier
26.815 MHz FM 26,815 FM - POCSAG paging signals, various signal strengths
26.835 MHz FM 26,835 FM - POCSAG paging signals, known pager frequency, various signal strengths
26.900 MHz FM 26,900 FM - POCSAG paging signals, very busy various signal strengths
26.990 MHz FM 26,990 FM - Data bursts, multi-tone audio frequency shift keying (4-5 kHz wide bandwidth)
26.995 MHz FM 26.995 FM - "Chirp" data bursts, reminds me of narrowband SCADA
27.300 MHz FM 27,300 FM - POCSAG paging signals, very similar to those on 26.9 MHz, 27.360 MHz and other 26MHz frequencies
27.360 MHz FM 27,360 FM - POCSAG paging signals, intermittent severe QRM from CB radio chatter on 27.355 MHz, 27.360 MHz and 27.365 MHz
27.450 MHz FM 27,450 FM - FM carrier during "idle" times - multiple transmitters on frequency, narrow band POCSAG
27.450 MHz FM 27,450 FM - Data bursts, multiple FM carriers on frequency
27.505 MHz FM 27,505 FM - Various data bursts, 8-10 kHz wide bandwidth
27.505 MHz FM 27,505 FM - Wideband paging, offset center frequency 27.506 MHz
27.845 MHz FM 27,845 FM - POCSAG like paging, sporadic activity
27.940 MHz FM 27,940 FM - Pulsing FSK data signal
27.940 MHz FM 27,940 FM - POCSAG paging signals, on top of nonstop data stream signal


11
1045 UTC - 1100 UTC


26.200 MHz 26,200 kHz FM - POCSAG paging bursts, narrowband, super narrow band, with FM carrier during "idle" periods
26.350 MHz 26,350 kHz FM - POCSAG paging signals - multiple FM carriers on frequency during idle periods
26.500 MHz 26,500 kHz FM - POCSAG signals and other data burst
26.500 MHz 26,500 kHz FM - Multiple FM carriers on frequency (idle signals) 26.4997 MHz, 26.499.85 MHz, 26.500.0 MHz and 26.500.06 MHz
26.645 MHz 26,645 kHz FM - POCSAG paging signals, FM carriers during "idle" (no paging being sent)
26.695 MHz 26,695 kHz FM - Nearly non-stop paging signals, FM carriers on center frequency
26.700 MHz 26,700 kHz FM - Narrowband MFSK data bursts
26.700 MHz 26,700 kHz FM - FM carrier - probably another a "idle" signal
26.705 MHz 26,705 kHz FM - MFSK data bursts
26.705 MHz 26,705 kHz FM - POCSAG paging signals, narrowband and super narrow band
26.745 MHz 26,745 kHz FM - POCSAG pager signals
26.755 MHz 26,755 kHz FM - POCSAG signals, narrowband FSK and MFSK data bursts
26.835 MHz 26,835 kHz FM - Sporadic paging signals, FM CB radio chatter on frequency as well
26.900 MHz 26,900 kHz FM - Very active paging frequency, various signal strengths (and bandwidths)
26.905 MHz 26,905 kHz FM - MFSK data bursts
26.905 MHz 26,905 kHz FM - MFSK and audio-frequency shift keying data polytone data bursts
26.915 MHz 26,915 kHz FM - MFSK and audio-frequency shift keying data polytone data bursts
26.955 MHz 26,955 kHz FM - Narrowband data bursts, similar to RCRS signals
27.045 MHz 27,045 kHz FM - MFSK (4-5 kHz BW) data bursts, 1-2 second duration
27.300 MHz 27,300 kHz FM - POCSAG, paging pager signals - some weak CB radio chatter on 27.300MHz FM
27.360 MHz 27,360 kHz FM - POCSAG, pager, pager signals
27.450 MHz 27,450 kHz FM - Data bursts + paging signals, FM carriers during idle periods
27.470 MHz 27,470 kHz FM - Narrowband data bursts, paging or datalink, heavy QRM
27.475 MHz 27,475 kHz FM - POCSAG paging signals, narrow band
27.505 MHz 27,505 kHz FM - POCSAG paging signals, other data signals bandwidth 8 to 15 kHz
27.510 MHz 27,510 kHz FM - POCSAG and other data bursts, various bandwidths
27.550 MHz 27,550 kHz FM - POCSAG paging signals - narrow band / narrow deviation (sporadic activity)
27.760 MHz 27,760 kHz FM - Data link, two signals on opposite sides of the 27.76 MHz frequency
27.845 MHz 27,845 kHz FM - Nearly nonstop POCSAG paging signals, very busy
27.850 MHz 27,850 kHz FM - Sporadic POCSAG paging signals, offset frequency 27.848MHz


1120 UTC -

26.705 MHz 26,705 kHz FM - POCSAG signals, often at the same time as 26.695 MHz
26.850 MHz 26,850 kHz FM - MFSK data bursts, similar those 26.450 MHz and other freqs
26.925 MHz 26,925 kHz FM - Narrow band data bursts, similar to 26.905 MHz and 26.915 MHz
27.080 MHz 27,080 kHz FM - Data bursts, previously noted on this frequency during band openings to Russia, etc.
27.120 MHz 27,120 kHz FM - POCSAG paging signals, narrow band, identical to the 26.9 MHz, 27.35 MHz, 26.695 MHz, etc. signals


12
10/11 meters / 29.7 MHz - 30.0 MHz Band Logs, Observations etc.
« on: June 21, 2024, 1329 UTC »
29700 kHz to 30000 kHz (sometimes 30.005 MHz or 30.01 MHz on frequency allocation tables) 29,700 to 30,000 seems to be a "forgotten spectrum".

Paging logs

29.750 MHz
29.800 MHz
29.900 MHz

with 29.8 MHz and 29.9 MHz being the most active.  POCSAG, mostly narrowband.  29800 kHz and 29900 kHz.

29.750 MHz paging signals noted at 1309 UTC today 06/21/24 via the G8JNJ SDR, along with POCSAG on 29.8 MHz and 29.9 MHz

Land mobile comms:

U.S. LMR (Part 90) Business Radio Service allocations 29.7 MHz - 29.8 MHz.

29.710 MHz FM
29.730 MHz FM
29.750 MHz FM
29.770 MHz FM
29.790 MHz FM

Compared with the 27 MHz business frequencies, these are still in use by a handful of users, including simplex, repeater outputs and at least one fishing (Alaskan crab fishing company) user has a simplex base-mobile system on 29.77 MHz FM. 

Non US LMR users:

Confirmed activity

29.855 MHz FM - Russian taxi cab dispatch, unknown location, YL dispatcher
29.905 MHz FM - Russian taxi cab dispatch, unknown location, YL dispatcher
29.955 MHz FM - Russian taxi cab dispatch, unknown location, YL dispatcher
29.965 MHz FM - Russian taxi cab dispatch, unknown location, YL dispatcher

Marine maritime mobile users - Chinese / Asian fishery radio 25 kHz / 12.5 kHz spacing - the full spectrum

29.700 MHz FM
29.7125 MHz FM
29.725 MHz FM
29.7375 MHz FM
29.750 MHz FM
29.7625 MHz FM
29.775 MHz FM
29.7875 MHz FM
29.800 MHz FM
29.8125 MHz FM
29.825 MHz FM
29.8375 MHz FM
29.850 MHz FM
29.8625 MHz FM
29.875 MHz FM
29.8875 MHz FM
29.900 MHz FM
29.9125 MHz FM
29.925 MHz FM
29.9375 MHz FM
29.950 MHz FM
29.9625 MHz FM
29.975 MHz FM
29.9875 MHz FM
30.000 MHz FM
and continuing up to 39.5 MHz

Confirmed use of 29.775 MHz, 29.800 MHz, 29.825 MHz, 29.850 MHz, 29.875 MHz, 29.9375 MHz, 29.950 MHz, 29.9625 MHz, 29.975 MHz and others.   

The 12.5 kHz spacing frequencies appear to be "export mode" as the official Chinese regulated radios are 25 kHz spacing radios.  29.875MHz seems to be one of the most popular fishing boat frequencies in this spectrum.

Datalink, telemetry, wave rider buoys, OTHR:

Over the horizon radar systems are quite active on this band, 29.75 MHz, 29.8 MHz, 29.85 MHz, 29.9 MHz MHz, 29.95 MHz center frequencies.  Wave data radio buoys, which transmit narrowband FSK signals, use 5 kHz steps and are found from 29.705 MHz up to 29.995 MHz. 

This spectrum is also used for short range low power devices SRDs and LPDs, i.e. garage door openers, short range remote wireless control links, and the like.

It is also assigned to remote control R/C RC model control purposes in

29.725 MHz - 29725 kHz - RC Channel 272
29.745 MHz - 29745 kHz - RC Channel 274
29.765 MHz - 29765 kHz - RC Channel 276
29.785 MHz - 29785 kHz - RC Channel 278
29.805 MHz - 29805 kHz - RC Channel 280
29.825 MHz - 29825 kHz - RC Channel 282
29.845 MHz - 29845 kHz - RC Channel 284
29.865 MHz - 29865 kHz - RC Channel 286
29.885 MHz - 29885 kHz - RC Channel 288
29.905 MHz - 29905 kHz - RC Channel 290
29.925 MHz - 29925 kHz - RC Channel 292
29.945 MHz - 29945 kHz - RC Channel 294
29.965 MHz - 29965 kHz - RC Channel 296
29.985 MHz - 29985 kHz - RC Channel 298

Australia 29MHz

29.725 MHz - 29725 kHz - RC Channel 10
29.735 MHz - 29735 kHz - RC Channel 11
29.745 MHz - 29745 kHz - RC Channel 12
29.755 MHz - 29755 kHz - RC Channel 13
29.765 MHz - 29765 kHz - RC Channel 14
29.775 MHz - 29775 kHz - RC Channel 15
29.785 MHz - 29785 kHz - RC Channel 16
29.795 MHz - 29795 kHz - RC Channel 17
29.805 MHz - 29805 kHz - RC Channel 18
29.815 MHz - 29815 kHz - RC Channel 19
29.825 MHz - 29825 kHz - RC Channel 20
29.835 MHz - 29835 kHz - RC Channel 21
29.845 MHz - 29845 kHz - RC Channel 22
29.835 MHz - 29835 kHz - RC Channel 23
29.865 MHz - 29865 kHz - RC Channel 24
29.875 MHz - 29875 kHz - RC Channel 25
29.885 MHz - 29885 kHz - RC Channel 26
29.895 MHz - 29895 kHz - RC Channel 27
29.905 MHz - 29905 kHz - RC Channel 28
29.915 MHz - 29915 kHz - RC Channel 29
29.925 MHz - 29925 kHz - RC Channel 30
29.935 MHz - 29935 kHz - RC Channel 31
29.945 MHz - 29945 kHz - RC Channel 32
29.955 MHz - 29955 kHz - RC Channel 33
29.965 MHz - 29965 kHz - RC Channel 34
29.975 MHz - 29975 kHz - RC Channel 35
29.985 MHz - 29985 kHz - RC Channel 36

13
Listening to 11m via online receivers, primarily the G8JNJ SDRs.   Lots of activity, voice and data, all modes.  5 kHz / 10 kHz spacing, including the Russian/Polish channels. 

27205 kHz FM 27.205 MHz FM - CB Channel 20 mid band FM EU CE USA Ch. 20 active with a parrot repeater / simplex repeater with a tell-tale 3-tone end of transmission tone burst and recorded ID.  DTMF repeater 27.205MHz FM CB CH20 FM.   S7 signal strength at 1101 UTC, lots of adjacent channel QRM from 27.200 MHz FM voice chatter, 27.210 MHz FM CB radio chatter, FSK bursts (probably fishnet beacons - fish net buoys, transmitting FSK. 

27.200 MHz FM is strong enough to get into the passband of 27.205 MHz RPTR receiver and key it up.  Busy band this morning. 

14
Hearing the YL dispatcher, solid S7 to S8 signal, peaking over S9, talking to various drivers.  Strongest this one has been in a while.


15
RX is the G8JNJ SDR receiver located in South West UK.  Strong fisheries radio chatter.  Channel 193 on the 480 channel plan Chinese 27.5MHz - 39.5MHz FM fishing boat fleet radios.  Strong FM modulation, two OMs yakking away.  S5 signal strength jumping up to S8 on the peaks. 

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