We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissable in your locale.

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - R4002

Pages: 1 ... 7 8 9 10 11 12 13 14 [15] 16 17 18 19 20 21 22 23 ... 191
211

26165 AM 26.165 MHz AM - Spanish language
26405 AM 26.405 MHz AM - Spanish language
26665 AM 26.665 MHz AM - Spanish language
26785 AM 26.785 MHz AM - Unmodulated AM carrier, maybe somebody doing radio checks
26945 AM 26.945 MHz AM - Weak signal, possibly taxi dispatch YL Spanish numbers (previously logged)

27465 USB 27.465 MHz USB
27475 USB 27.475 MHz USB - Spanish language
27500 USB 27.500 MHz USB - Caribbean stations
27520 USB 27.520 MHz USB - Weak SSB signals
27555 USB 27.555 MHz USB - "calling Central America..." (in Spanish) heard at 1814 UTC
27605 USB 27.605 MHz USB - Spanish and English heard, very busy
27625 USB 27.625 MHz USB - Spanish language
27655 AM 27.655 MHz AM - Weak AM signal, possibly taxi cab dispatcher
27675 LSB 27.675 MHz LSB - Spanish language
27755 USB 27.755 MHz USB - Sounds like RTTY or maybe PSK, 27.756 MHz center frequency
27795 AM 27.795 MHz AM - Roger beeps heard
27815 USB 27.815 MHz USB - Spanish language
27835 AM 27.835 MHz AM - Spanish language

212
10/11 meters / Re: Lots of activity 1430 UTC 7 OCT 2021
« on: October 07, 2021, 1806 UTC »
27515 LSB often has some pretty colorful QSOs on it. 

Bonus points for when the Mexican taxi lady with the crazy roger beeps on 27.515 MHz AM is reading numbers on top of the Jamaicans

213
Checked back in at 1430 UTC / 1830 local KiwiSDR time:



26665 FM 26.665 MHz FM - Weak data signal, possibly a pager signal - very weak
26945 FM 26.945 MHz FM - FSK data bursts - multiple signals on frequency, some extremely strong - as usual
26950 FM 26.950 MHz FM - Weak FSK or MFSK signal - 10-12 kHz wide
26960 FM 26.960 MHz FM - FSK data bursts - multiple signals on frequency, noted 26959.7, 26960.9, 26960.3 freqs
26990 FM 26.990 MHz FM - FSK data bursts - similar to signals on 26.945 MHz and 26.96 MHz, but weaker
27005 FM 27.005 MHz FM - Russian CB activity
27100 FM 27.100 MHz FM - Weak FM signals noted
27115 FM 27.115 MHz FM - Strong Russian language chatter
27120 AM 27.120 MHz AM - 27.12 MHz dots, 3-4 dots every few seconds, possibly ISM user
27135 AM 27.135 MHz AM - Russian trucker / road channel - active C15AE or D15AE - CB channel 15 AM
27155 FM 27.155 MHz FM - Russian language chatter

214
Quick check of one of the Russian SDRs - 1030 UTC / 1430 local SDR time:

26250 FM 26.250 MHz FM - Weak paging data - Very much like POCSAG, probably UK or European hospital pager
26600 FM 26.600 MHz FM - Paging data - pager signals -similar to signals on 26745 and 26635
26635 FM 26.635 MHz FM - Paging data - pager signals 26 MHz pagers - European ?
26695 FM 26.695 MHz FM - Paging data, similar to 26.745 MHz
26745 FM 26.745 MHz FM - Paging data - pager signals, heavy QSB
26945 FM 26.945 MHz FM - Data link, very strong signals at points - numerous signals on frequency
26950 FM 26.950 MHz FM - Paging or data link, similar to the other signals nearby, much weaker than 26.945 and 26.96
26960 FM 26.960 MHz FM - Data link, numerous signals on frequency
27075 FM 27.075 MHz FM - Russian language
27105 FM 27.105 MHz FM - Russian language
27135 AM 27.135 MHz AM - Russian trucker / road channel - active
27165 AM 27.165 MHz AM - Russian language, good signals
27185 FM 27.185 MHz FM - Russian language, some very strong local signals
27195 USB 27.195 MHz USB - Russian language, SIO 333, pretty active
27215 FM 27.215 MHz FM - Russian language, weak signals
27305 FM 27.305 MHz FM - Weak FM signals fading in at 1058 UTC
27465 AM 27.465 MHz AM - Very weak AM signals noted around 1050 UTC

215
Thanks! Here are some more:

25695 AM 25.695 MHz AM - Spanish language taxi dispatcher - YL taxi lady with OM drivers replying
25805 AM 25.805 MHz AM - Spanish language taxi dispatch - distinctive "roger beep"
26155 AM 26.155 MHz AM - Spanish language freebanders SS freebanders
26175 AM 26.175 MHz AM - Spanish language freebanders SS freebanders
26225 USB 26.225 MHz USB - well-known Latin American/Caribbean calling frequency - active
26355 AM 26.355 MHz AM - Spanish language freebanders SS freebanders
26415 AM 26.415 MHz AM - Spanish language freebanders SS freebanders
26585 AM 26.585 MHz AM - VERY busy - Mexican trucker/freebander common frequency
26695 AM 26.695 MHz AM - Caribbean or Latin American traffic
26715 AM 26.715 MHz AM - Strong signals at points, a very popular frequency
26765 AM 26.765 MHz AM - Spanish language freebanders SS freebanders
26815 AM 26.815 MHz AM - Spanish language freebanders SS freebanders
26915 AM 26.915 MHz AM - Several carriers noted, this is a well-known US "low channel" AM DX channel
26935 AM 26.935 MHz AM - Spanish language heard, previously logged taxi dispatcher on this frequency
26945 AM 26.945 MHz AM - Spanish language taxi dispatch - distinctive "roger beep"

The legal 40 CB band is still blowing up, with numerous 25615-26955 region frequencies popping up too.  Looks like the pagers have mostly disappeared.   Of course, 27015 27.015 MHz CB channel 5 is very busy

I am hearing numerous signals on 27255 though:

27.255 MHz USB - Spanish language chatter
27.255 MHz LSB - Spanish language chatter - a different QSO
27.255 MHz AM - numerous AM carriers and signals going on at once
27.255 MHz FM - FSK signal, appears to be centered closer to 27256 27.256 MHz

Also in the upper part of the band:

27745 AM 27.745 MHz AM - Spanish language taxi dispatcher YL lady with 3/4 tone burst roger beep
27755 AM 27.755 MHz AM - Spanish language
27765 LSB 27.765 MHz LSB - Spanish language freebanders, good signals
27765 AM 27.765 MHz AM - Spanish language taxi dispatch - YL taxi lady, heavy QRM from 27765 LSB
27775 AM 27.775 MHz AM - SS OM, with the theme from "The Pink Panther" playing underneath
27785 AM 27.785 MHz AM - Spanish language taxi dispatcher - YL taxi lady
27815 USB 27.815 MHz USB - Portuguese
27845 AM 27.845 MHz AM - Spanish language, YL taxi dispatch with roger beeps
27885 AM 27.885 MHz AM - Spanish language
27915 AM 27.915 MHz AM - Possibly a taxi cab dispatcher, taxi cab radio dispatch 27MHz
27975 AM 27.975 MHz AM - Spanish or Portuguese


At about 1800 UTC it seems the band might be closing a bit more?  The band seems to be quieting down

216
10/11 meters / Re: 11M Open to Europe this morning
« on: October 06, 2021, 1511 UTC »
11 meters is going nuts.

SSB signals every 5 kHz from 27300 to 27700 or so.  Heard some UK stations talking on 26420 LSB and lots and lots of paging signals...including the 26.150 MHz, 26.250 MHz, 26.745 MHz frequencies and several others.  26.950 MHz also had data bursts.

All the R/C frequencies 26.995 MHz, 27.045 MHz, 27.095 MHz, 27.145 MHz and 27.195 MHz have voice signals on them, all of them appear to be Latin American taxi cab dispatchers.

217

25695 AM 25.695 MHz AM - Taxi dispatch taxicab dispatcher. OM driver heard replying to YL dispatch SS
26035 AM 26.035 MHz AM - SS OM heard, noise toys and roger beeps heard
26150 FM 26.150 MHz FM - POCSAG Paging Pager system 26 MHz pager - possibly UK hospital paging?
26225 USB 26.225 MHz USB - Spanish language
26250 FM 26.250 MHz FM - POCSAG Paging Pager system 26 MHz pager - possibly UK hospital paging?
26420 USB 26.420 MHz USB - "It's a bit quiet on the frequency at the moment..." English accent
26455 AM 26.455 MHz AM - SS OMs and YLs heard, taxi cab radio dispatcher or other land mobile user
26565 AM 26.565 MHz AM - SS freebanders, active
26585 AM 26.585 MHz AM - Extremely busy, as to be expected
26605 AM 26.605 MHz AM - Spanish language, truckers, similar to 26.585 AM
26650 FM 26.650 MHz FM - Pager / paging signals - known European paging frequency
26665 AM 26.665 MHz AM - Spanish language, music heard in background
26765 AM 26.765 MHz AM - YL Spanish language taxi dispatcher lady with roger beep
26695 FM 26.695 MHz FM - Strong paging signal - known European and/or UK pager frequency
26705 AM 26.705 MHz AM - Spanish language, very busy
26715 AM 26.715 MHz AM - Spanish language, very busy
26745 FM 26.745 MHz FM - Strong paging signals, numerous signals on frequency at once
26750 FM 26.750 MHz FM - Weak paging signal getting QRMed by 26.745
26800 USB 26.800 MHz USB - French or Portuguese? very good signals at 1500 UTC 1501 UTC
26825 AM 26.825 MHz AM - Spanish language
26850 FM 26.850 MHz FM - Paging signals, fading in and out
26865 AM 26.865 MHz AM - Spanish language
26875 AM 26.875 MHz AM - YL Spanish language taxi dispatcher lady with roger beep
26885 AM 26.885 MHz AM - Spanish language, mixing with UNID FM signal on same frequency
26885 FM 26.885 MHz FM - German language????
26935 AM 26.935 MHz AM - YL Spanish language taxi dispatcher
26945 AM 26.945 MHz AM - YL Spanish language taxi dispatcher lady with roger beep
26950 FM 26.950 MHz FM - Data bursts, pager system or paging

27015 AM 27.015 MHz AM - Spanish language, lots and lots of QRM, noise toys, etc.  - CB Channel 5
27045 AM 27.045 MHz AM - YL Spanish language taxi dispatcher lady with roger beep - R/C frequency
27095 AM 27.095 MHz AM - YL Spanish language taxi dispatcher lady with roger beep - R/C frequency

every 5 kHz from roughly 27350 to 27450 SSB activity, heavy QRM

27390 LSB 27.390 MHz French station "My name BOUDO" - unique roger beep, "UK" - "New York" 
27400 LSB 27.400 MHz LSB - Scottish accented station working US station, heavy QRM

27500 - 27700 - SSB signals every 5 kHz, band very busy

27600 USB 27.600 MHz USB - Spanish
27605 USB 27.605 MHz USB
27665 USB 27.665 MHz USB - Numerous Spanish language stations on top of each other, heard "Mexicali"
27673 USB 27.673 MHz USB - "Hola!" over and over again - yes, 27.673 MHz, not 27.670 MHz or 27.675 MHz
27780 USB 27.780 MHz USB - Accented English
27781 FM 27.78125 MHz FM - Weak FM signals heard
27815 AM 27.815 MHz AM - UNID users, Spanish language, possibly taxi cabs
27831 FM 27.83125 MHz FM - Weak FM signal heard, UK FM CB
27835 USB 27.835 MHz USB - Italian language
27845 FM 27.845 MHz FM - POCSAG paging signal, faded in
27945 AM 27.945 MHz AM - Spanish language, heavy QSB

218
Spanish speaking YLs with Roger beeps coming in nicely this morning on Class C R/C channels 27045 AM and 27095 AM.   Several out of band frequencies active too.

Also, 27015 AM / 27.015 MHz AM CB channel 5 is extremely busy with Spanish language traffic. 

219

25695 AM 25.695 MHz AM - SS YL taxi cab dispatcher with roger beep, good signal this morning
25745 AM 25.745 MHz AM - SS Spanish language chatter, probably also taxi dispatch lady
26035 AM 26.035 MHz AM - SS very strong signals at 1355 UTC or so
26055 AM 26.055 MHz AM - SS UNID, weak/fair signal, presumably also taxi dispatchers 25 MHz taxi 26 MHz taxi radio
26175 AM 26.175 MHz AM - SS
20205 AM 26.205 MHz AM - SS
26445 AM 26.445 MHz AM - SS
26455 AM 26.455 MHz AM - SS
26485 AM 26.485 MHz AM - SS
26555 LSB 26.555 MHz LSB - Spanish language Latin American SSB calling frequency, busy
26575 AM 26.575 MHz AM - SS
26585 AM 26.585 MHz AM - Spanish language - Mexican trucker/freebander channel
26595 AM 26.595 MHz AM - SS, sporadic signal, probably Mexican freebanders
26625 AM 26.625 MHz AM - SS, weak/fair
26845 AM 26.845 MHz AM - Weak AM signal noted, unknown language
26905 AM 26.905 MHz AM - YL dispatch taxi dispatch lady with roger beep - previously monitored Mexican taxis here
26945 AM 26.945 MHz AM - Weak signals, sounds like Spanish speaking stations

220
25.695 MHz AM and 25.745 MHz AM are both coming in nicely this morning with taxi dispatch radio comms.  26.035 MHz AM, 26.055 MHz AM, 26.445 MHz AM. 26.455 MHz AM, 26.575 MHz AM, and 26.585 MHz AM also coming in. 

I imagine the upper 25 MHz band and 26 MHz band will be busy today!

221
Grid squad LO26bg

GPS coordinates  56.268 N, 44.0873 E / 5616'04.8"N 4405'14.3"E


27040 FM 27.040 MHz FM - Russian language, YL and OM - probably taxi controller taxi dispatcher
27115 FM 27.115 MHz FM - UNID, weak signal (FM)
27130 FM 27.130 MHz FM - Russian language, weak, some QRM from 27.135 AM
27135 AM 27.135 MHz AM - Russian language, trucker channel - similar to channel 19 / 27.185 AM here
27155 FM 27.155 MHz FM - Russian, language, very busy
27535 FM 27.535 MHz FM - Weak FM signal, UNID user

222

25695 kHz AM 25.695 MHz AM - coming in nicely on multiple receivers on the US East Coast.  OMs and YL heard, likely the YL is the dispatcher and the OMs are the drivers. 

There are other active frequencies in the 25 MHz and 26 MHz low channels this afternoon but this one is (at least at the moment) the strongest in the 25 MHz band.  I've logged it several times in the past, likely with the same user.

As to be expected, 26.585 MHz AM and the nearby frequencies are also busy with Mexican stations (on 26585 anyway).

223

25615 AM
25665 AM
25695 AM
25875 AM
26165 AM
26185 AM
26395 AM
26415 AM
26525 AM
26530 USB
26555 LSB
26575 AM
26585 AM
26685 AM
26805 AM

27415 USB
27435 USB
27440 USB
27455 USB
27505 USB
27550 USB
27665 USB
27695 LSB

224
26.695 MHz is a well-known UK paging frequency - technically an offset from the 26.700 MHz European standardized paging frequency.

Depending on where you look, 26.2 MHz to 26.965 MHz is a standardized paging band, other sources say 26.235 MHz to 26.935 MHz and still others say 26.500 MHz to 26.960 MHz...

26.795 MHz also had what sounded like POCSAG on it.  26.695 was certainly POCSAG (and was pretty strong). 

The wider-than-normal 10 kHz wide FSK signal actually might have been 2-carrier MFSK, as the carriers were closer to 26995 and 27005, mark or space moved them up or down roughly 1.5 kHz or 2 kHz, but the whole signal was 10 kHz or 12 kHz wide...compared to the usual 6-8 kHz wide data signals heard on the 25-28 MHz band.

The dits on 27.120 MHz could have been a legit ISM signal or some sort of non-communications signal.  Or, it could be some sort of beacon.  27125 had voice activity on it that would, at times, drown out the 27120 signal.

In regards to the 27.120 MHz signal, there is this:

https://www.qsl.net/n2sln/driftnetbeacons.html 26 MHz and 27 MHz Driftnet Beacons 26 MHz Fishnet Radio Beacons Radiobuoy 26 MHz 27 MHz

225
Seems this morning (afternoon in Europe and Russia) the band was also open.  Via one of the Russia-based KiwSDRs, Inoted numerous signals on the UK FM CB frequencies, including UK FM CB channel 19 27781.25 FM and several others.  FM signals on frequencies like 27.600 MHz and 27.605 MHz were also noted - Russian taxicab dispatchers mixing in with UK FM CB signals on 27.60125 MHz..

Some SSB activity around 27555 and a mixture of AM, FM and SSB signals within the 26960-27410 band...including the strong data link systems on 26945 and 26960.  I did some research and Google translate and found out that 26.945 MHz, 26.950 MHz, 26.955 MHz, 26.960 MHz and several other frequencies are, in Russia, heavily used for campus-wide alarm system data links and other systems that we use 27.255 MHz (and 26.995/27.045/27.095/27.145/27.195) for.

Maximum power output on 26.945 and 26.960 is 2 watts (according to my research anyway).

In addition to those signals, POCSAG paging signals were heard on several frequencies in the 26 MHz region, considering the fact that the UK FM CB frequencies were booming in, I imagine at least some of the 26 MHz POCSAG signals were also from the UK or Western Europe. 

Also, an odd data signal centered around 27.003 MHz was coming in, mixing with CB signals on 27000 and 27005.  I know stations in Finland have monitored POCSAG paging signals on 27007 or close to it - maybe 27.0075 MHz or 27006.5...this could be another one of those on-campus paging / telemetry systems using an offset frequency.

Maybe today will be another big band opening for us as well.

Pages: 1 ... 7 8 9 10 11 12 13 14 [15] 16 17 18 19 20 21 22 23 ... 191

Item image   RF Circuit Design by Chris Bowick

 $19.95