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271

10/11 meters / 11 meter band activity 22 June 2022 - W3HFU KiwiSDR

« on: June 22, 2022, 1337 UTC »

Via W3HFU KiwiSDR

Tuned in at 1330 UTC



26585 AM 26.585 MHz AM - Mexican 26MHz freeband CB channel/Mexican trucker channel, busy
26595 AM 26.595 MHz AM - Sporadic chatter, Mexican accented Spanish, likely guys that QSY'ed from 26.585
26655 AM 26.655 MHz AM - Spanish language chatter
26675 AM 26.675 MHz AM - "five thirty six" "536" and "36" heard - probably truckers using export 11m radios?
26765 AM 26.765 MHz AM - Truckers or other land mobile users (English language, US accents) - weak
26795 AM 26.795 MHz AM - US stations, very weak, but able to make out language and accent
26805 AM 26.805 MHz AM - US stations, strong AM signals, weak SSB underneath
26805 LSB 26.805 MHz LSB - Spanish language chatter, much weaker than the domestic signals on the same frequency
26845 AM 26.845 MHz AM - "Bill" "got it" and other bits and pieces (heavy fading)
26855 AM 26.855 MHz AM - US truckers or land mobile users on export radios, lots of fading


27455 AM 27.455 MHz AM - Spanish language - probably a taxi dispatcher (poor frequency choice..)

272

10/11 meters / 11 meter activity Voice and Paging Data Signals via GB3WB KiwiSDR 21 June 2022

« on: June 21, 2022, 1320 UTC »

Tuned in at 1320 UTC June 21st 2022 - 11m is wall to wall.  In fact, 25 to 30 MHz is literally full of signals



25675 kHz 25.675 MHz FM - Voice traffic
26155 kHz 26.155 MHz FM - Voice traffic
26200 kHz 26.200 MHz - Very powerful pager signal
26900 kHz 26.900 MHz - Numerous paging signals
26905 26.905 MHz - Data bursts, mixing with FM voice, numerous signals on frequency
26915 26.915 MHz - Data bursts, 5 kHz wide, very strong
26925 26.925 MHz - Data bursts, 8-10 kHz wide every 1/2 second or so, very strong



29700 kHz 29.700 MHz USB - Strong FSK signal, center frequency 29.701 MHz 29701 kHz
29702 kHz 29.702 MHz USB - Strong FSK signal, center frequency 29.7035 MHz 29703.5 kHz
29704 kHz 29.704 MHz USB - Strong FSK signal, center frequency 29.705 MHz 29705 kHz
29750 kHz 29.750 MHz - Pager signals - carrier, then paging signal burst
29824 kHz 29.824 MHz USB - Strong FSK signal, center frequency right on 29.825 MHz 29825 kHz
29850 kHz 29.850 MHz - Paging signals
29868 kHz 29.868 MHz USB - Strong FSK signal, center frequency 29.8695 MHz 29896.5 kHz
29875 kHz 29.875 MHz FM 29875 FM signal, French language, UNID users - land mobile or freebanders
29900 kHz 29.900 MHz - Paging signal - very strong bursts
29985 kHz 29.985 MHz FM 29985 FM signal, French language, UNID users
30100 kHz 30.100 MHz POCSAG Paging signal, bursts
30105 kHz 30.105 MHz AM 30105 AM signal, freebanders or land mobile?
30155 kHz 30.155 MHz Data bursts, probably pager signal, 8-10 kHz wide
30175 kHz 30.175 MHz FM 30175 FM - French language - land mobile? Military freq 30.175 MHz
31325 kHz 31.325 MHz - Data bursts or paging signals - very strong - UK hospital paging medical paging?
31437.5 kHz 31.4375 MHz - Data bursts or paging signals - very strong
31512.5 kHz 31.5125 MHz - Data bursts - seems similar to the signals on 31.4375 MHz / 31437.5 kHz
31725 kHz 31.725 MHz - POCSAG paging signals - UK hospital pager paging frequency
31750 kHz 31.750 MHz - POCSAG paging signals - UK hospital pager paging frequency
31775 kHz 31.775 MHz - POCSAG paging signals - UK hospital pager paging frequency


Tuned back in at 1730 UTC

25.785 MHz FM 25.785 FM - Two-way radio chatter, sounds like taxi cab dispatcher or similar
25.800 MHz AM 25.8 MHz AM 25800 kHz - Music (broadcaster, I think)
25.855 MHz USB 25.855 MHz USB - Freebanders using 25 MHz band
26.065 MHz AM 26.065 AM - Italian language CB freebanders
26.115 MHz FM 26.115 FM - Two-way radio chatter, likely a taxi cab dispatcher dispatch lady
26.115 MHz - Two-frequency FSK signals
26.145 MHz - FSK data bursts 26145 kHz
26.150 MHz - Paging
26.165 MHz - FSK data bursts 26165 kHz
26.200 MHz - Paging - extremely strong signals
26.235 MHz - Paging signals and data bursts, noted offset signals, 26.2375 MHz 26.238 MHz
26.250 MHz - Paging signals
26.265 MHz FM - 26.265 FM - Weak FM signal, getting obliterated by OTHR 26.2 MHz to 26.35 MHz
26.335 MHz FM - 26.335 FM - Weak FM signal, getting obliterated by OTHR 26.2 MHz to 26.35 MHz
26.350 MHz - Paging signals
26.375 MHz USB - 11m freeband CB activity
26.385 MHz USB - 11m freeband CB activity, Polish or Russian?
26.415 MHz USB - Extremely busy frequency
26.435 MHz USB - Extremely busy frequency
26.440 MHz USB - Extremely busy frequency
26.445 MHz USB - Extremely busy frequency, similar to the other nearby active frequencies
26.455 MHz USB - Russian or Polish? very busy
26.465 MHz USB - Russian or Polish? very busy
26.500 MHz - Paging signals - absolutely destroying the guys on 26.505 MHz USB during the data bursts
26.505 MHz USB - Polish (I think?)
26.520 MHz - FSK signal - narrowband
26.525 MHz FM - 26.525 FM - Multiple signals at once, hearing German language in there
26.550 MHz - Paging - strong signals
26.635 MHz - Paging, nearly constant signals
26.645 MHz FM - FM CB activity
26.655 MHz FM - FM CB activity
26.665 MHz FM - FM CB activity
26.695 MHz - Paging
26.705 MHz - Paging, very strong
26.745 MHz - Paging - solid S7, peaking at S9 or S9+10
26.750 MHz - Paging
26.755 MHz - Paging - POCSAG signals - multiple signals at once
26.815 MHz FM - 26.815 FM - Italian language mixing in with pager data bursts
26.815 MHz - Paging signals
26.835 MHz - Paging signals
26.900 MHz - Data bursts (wide signals) and POCSAG pager signals
26.915 MHz - Data bursts, mixing with FM CB voice signals
26.945 MHz - Data bursts and paging (QRM from 26950 kHz 26.950 MHz)
26.950 MHz - Very strong data bursts (various bandwidths)
26.955 MHz - Paging and data bursts, mixing in with FM CB chatter

27.069 MHz - Narrowband FSK bursts, some QRM from strong signals on 27.065 MHz and 27.075 MHz FM
27.100 MHz - Narrowband FSK or telemetry signal - 4-5 kHz wide, FM CB chatter mixing in
27.130 MHz USB - Italian language CBers, mixing with FSK signals on same frequency
27.235 MHz - Packet radio, data bursts and all sorts of other stuff (also on 27.245 MHz)
27.245 MHz - Very messy, CB Channel 25
27.255 MHz - FM voice, data bursts of various types...lots of QRM
27.350 MHz - Paging signals, mixing with AM, FM and SSB signals on 27.345 MHz, 27.350 MHz and 27.355 MHz
27.355 MHz - FSK data bursts, basically identical to the ones heard on 27.255 MHz during US band openings

27.97125 MHz 27971.25 FM - UK FM CB Channel 38 - Very busy
27.98125 MHz 27981.25 FM - UK FM CB Channel 39 - Very busy
27.985 MHz USB 27.985 USB - French language chatter, good signals!
27.99125 MHz 27991.25 FM - UK FM CB Channel 40 - Very busy

29.750 MHz - Paging signals, fair signals
29.770 MHz - 29.770 FM - Weak FM signal noted, likely land mobile given the frequency
29.780 MHz - FSK signal - idle carrier transmitted
29.800 MHz - Paging signals - basically constant, very strong signals at points
29.850 MHz - Paging signals
29.870 MHz - FSK signal - center frequency pretty darn close to being right on 29870.0 kHz
29.875 MHz - 29.875 FM - French language, probably the same guys heard earlier today
29.885 MHz - 29.885 MHz FM - French language chatter, not sure if these are freebanders or land mobile users
29.905 MHz USB - FSK signal, 29.906 MHz or 29.907 MHz center frequency
29.900 MHz - Paging signals - similar to those previously monitored in the 29.7 MHz to 30.0 MHz "sliver"
29.925 MHz FM 29.925 FM - Two-way radio chatter, UNID language, data bursts beginning of transmission
29.940 MHz FM 29.940 FM - Two-way radio chatter, end of transmission beep (odd frequency for freebanders)
29.965 MHz USB - FSK signal - 29.967 MHz or 29.968 MHz center frequency
30.020 MHz - Data bursts, likely paging signals
30.050 MHz - FSK signals, probably paging?
30.100 MHz - Paging signals, 6 kHz bandwidth, very strong at points 
30.450 MHz - Data bursts, 6-7 kHz wide
30.450 MHz - 30.450 FM - Very weak FM voice signals noted
31.1875 MHz - 31.1875 FM - FM voice comms, unknown language, heavy fading
31.325 MHz - 31.325 FM - Numerous short data bursts, reminds me of ROS data mode
31.475 MHz - 31.475 FM - FM voice (UNID language) with polytone burst at beginning of transmission
31.500 MHz - Pager - narrowband (sort of) - 4-5 kHz bandwidth
31.5375 MHz - 31.5375 FM - Short data bursts and weak NFM voice chatter
31.6875 MHz - 31.6875 FM - Numerous short data bursts - similar to signals heard on 31.325 MHz
31.725 MHz - POCSAG paging signals - UK hospital pager paging frequency
31.750 MHz - POCSAG paging signals - UK hospital pager paging frequency
31.775 MHz - POCSAG paging signals - UK hospital pager paging frequency
31.900 MHz - 31.900 FM - FM voice, NFM, sounds like a land mobile system, heavy fading, unable to ID language
31.975 MHz - 31.975 FM - FM voice, beginning-of-transmission burst (similar to 31.475 MHz) land mobile

273

10/11 meters / 11 meter band activity 21 June 2022 - W3HFU KiwiSDR

« on: June 21, 2022, 1315 UTC »

Via W3HFU KiwiSDR (8079) - 11m dipole/10m dipole antenna.

1300 UTC to xxxx UTC

25815 AM 25.815 MHz AM - Sounds like truckers or land mobile users using export radios, US stations
25935 AM 25.935 MHz AM - Truckers using export radios, or other business users on 25 MHz
26305 AM 26.305 MHz AM - Weak AM signals noted, unable to ID language or users
26335 AM 26.335 MHz AM - Southern accented US stations heard, poor/fair signals
26735 AM 26.735 MHz AM - Truckers using export radios, some fading, channel 19 "down one band"
26755 AM 26.755 MHz AM - Truckers or land mobile users using export radios
26795 AM 26.795 MHz AM - US freebanders
26855 AM 26.855 MHz AM - Dead carrier for a few minutes...
26865 AM 26.865 MHz AM - US freebanders
26875 AM 26.875 MHz AM - US based stations - sounds like freebanders
26895 AM 26.895 MHz AM - US freebanders - very busy
26915 AM 26.915 MHz AM - US stations shooting AM DX, decent signals - pretty busy!  Band C, channel 36
26945 AM 26.945 MHz AM - Spanish language, possibly a taxi cab dispatcher
26955 AM 26.955 MHz AM - Weak AM signals, getting obliterated by spurs/splatter from 27025 AM (channel 6)

26.960 MHz - start legal 40 channel CB band + RC freqs

26995 AM 26.995 MHz AM - US stations, sounds like hobbyists/freebanders
27045 AM 27.045 MHz AM - US stations, freebanders on RC channel (heavy QRM, but busy!)
27145 AM 27.145 MHz AM - US stations, sounds like truckers or land mobile users (RC Channel or Channel 15A)
27140 to 27151 - ISM "hook" (very strong)
27255 AM 27.255 MHz AM - Usual AM signals, mixing with various data bursts
27255 27.255 MHz - FSK bursts, two signals spaced roughly 5-6 kHz apart (CB Channel 23/RC Channel)
27305 USB 27.305 MHz USB - Us stations working SSB mode on a usually-has-AM-on-it-channel (CB Channel 30)
27375 LSB 27.375 MHz LSB - very busy as to be expected - CB Channel 37 LSB
27385 LSB 27.385 MHz LSB - very busy as to be expected - CB Channel 38 LSB
27400 LSB 27.400 MHz LSB - US stations "in between" channel 39 and 40
27405 AM 27.405 MHz AM - CB Channel 40 - really busy, lots and lots of QRM, multiple carriers mixing together

27.410 MHz 27410 kHz end legal 40 CB band + RC band

27535 AM 27535 MHz AM - truckers or land mobile users using export radios, weak (channel 11 up one band)
27695 USB 27.695 MHz USB - Weak SSB chatter noted
27710 USB 27.710 MHz USB - Weak SSB chatter noted

274

10/11 meters / 11 meter activity 26 MHz Paging Data Signals via GB3WB KiwiSDR 17 June 2022

« on: June 17, 2022, 1258 UTC »

17 June 2022

Some interesting logs here, including the 29.750 MHz 29.75 MHz, 29.800 MHz 29.8 MHz and 29.900 MHz 29.9 MHz pager signals coming in...same with 30.900 MHz, 31.320 MHz and the 31.1875 MHz frequency (maybe offset from 31.180 MHz, 31.190 MHz or 31.200 MHz..or it's coming from a country that uses the 12.5 kHz steps for that particular band plan. 

I remember reading about Canadian pager systems operating in the 29.8 MHz to 30-something MHz band, 10 kHz steps.  Of course, the freebanders / outbanders using 29.875 MHz is another interesting one.  To be fair, the 25 MHz, 26 MHz and 27 MHz bands were extremely busy.  Lots of activity in the 29.000 MHz to 29.700 MHz portion of 10m as well. 

But the 26 to 28 MHz band was just nuts. 


1230 UTC - 1300 UTC:

Data and paging signals, UK and other sources:

26150 kHz 26.150 MHz - Wideband pager signal - center frequency 26.15 MHz
26165 kHz 26.165 MHz - Narrowband FSK bursts, every 10-15 seconds, remind me of the telemetry bursts seen elsewhere
26175 kHz 26.175 MHz - Narrowband FSK bursts, very weak
26180 kHz 26.180 MHz - Data signal, center frequency closer to 26.181 MHz
26200 kHz 26.200 MHz - Wideband pager signal, nonstop
26237 kHz 26.237 MHz - Pager signa, offset frequency 26.2375 MHz 26.238 MHz UK On Site Paging (Hospital?)
26335 kHz 26.355 MHz - Pager signal, continuous signal - fair to weak signal 
26350 kHz 26.350 MHz - Unmodulated FM carrier, fading down to S3, up to S5-S6 at points - some POCSAG bursts
26375 kHz 26.375 MHz - AM Italian language heard
26390 kHz 26.390 MHz - Weak paging signal, possibly offset from 26.4 MHz frequency?
26500 kHz 26.500 MHz - 10 kHz wide paging signal
26505 kHz 26.505 MHz - FM carrier on/off, interfering with 26.500 MHz signal - UNID user
26505 kHz 26.505 MHz - AM freeband CB activity mixing in as well
26580 kHz 26.580 MHz - Narrowband FSK bursts
26585 kHz 26.585 MHz - FM CB chatter - German language
26588 kHz 26.588 MHz - Narrowband FSK bursts
26603 kHz 26.603 MHz - Narrowband FSK bursts - strong
26605 kHz 26.605 MHz - Wideband paging signal, very strong, paging bursts
26629 kHz 26.629 MHz - Narrowband FSK bursts
26635 kHz 26.635 MHz - FM CB chatter - Italian or maybe Portuguese?
26650 kHz 26.650 MHz - Strong POCSAG paging signals 8-10 kHz wide
26655 kHz 26.655 MHz - FSK bursts, mixing in with 26.65 MHz signal
26656 kHz 26.656 MHz - Narrowband FSK bursts, heavy QRM from 26.655 MHz and 26.650 MHz
26695 kHz 26.695 MHz - Strong POCSAG paging signals
26700 kHz 26.700 MHz - Paging or data bursts, heavy QRM
26705 kHz 26.705 MHz - POCSAG paging signals
26713 kHz 26.713 MHz - may be closer to 26.7125 MHz - narrow FSK bursts
26725 kHz 26.725 MHz - Narrower band paging signals - nonstop transmission
26735 kHz 26.735 MHz - Paging signals, very strong
26739 kHz 26.739 MHz - Narrowband FSK bursts
26745 kHz 26.745 MHz - Very strong pager signal
26750 kHz 26.750 MHz - Strong paging signal, data bursts and QRM from 26.745 MHz
26785 kHz 26.785 MHz - S6-S7 pager signal, mixing in with another data signal?
26835 kHz 26.835 MHz - Very strong paging signal mixing in with FM CB signal
26850 kHz 26.850 MHz - S8-S9 pager signal, 8-10 kHz wide
26950 kHz 26.950 MHz - Numerous paging and data signals on this frequency, some S4-S5, others S9
27003 kHz 27.003 MHz - Narrowband FSK bursts
27007 kHz 27.007 MHz - POCSAG paging signal
27129 kHz 27.129 MHz - Narrowband FSK bursts,
27180 kHz 27.180 MHz - Narrowband FSK bursts
27250 kHz 27.250 MHz - Narrowband FSK bursts
27300 kHz 27.300 MHz - Very strong paging / data signals - similar to those heard on 26.950 MHz
27550 kHz 27.550 MHz - Very strong paging / data signals - similar to those heard on 26.950 MHz
27650 kHz 27.650 MHz - Very strong paging / data signals - similar to those heard on 26.950 MHz

1645 UTC - 1815 UTC:

26135 kHz - 26.135 MHz - Carrier centered on 26134.6 kHz, paging bursts as well
26145 kHz - Narrowband FSK bursts
26150 kHz - Narrowband FSK bursts
26160 kHz - Narrowband FSK bursts
26164 kHz - Narrowband FSK bursts
26165 kHz - Narrowband FSK bursts
26165 kHz - Paging signals mixing with FSK signals (4-5 kHz bandwidth)
26175 kHz - Narrowband FSK bursts
26200 kHz - Paging signals - various signal strengths
26295 kHz 26.295 MHz AM - UNID language, AM mode freeband CBers with roger beeps
26305 kHz 26.305 MHz AM voice signals - sounds like Spanish language (weak)
26350 kHz 26.350 MHz Pager signals (8-10 kHz wide, pretty weak)
26405 kHz 26.405 MHz AM UNID language, maybe Russian? 
26415 kHz 26.415 MHz USB - Very active SSB frequency
26420 kHz 26.420 MHz USB - Polish language 11m freeband 26.420 USB
26435 kHz 26.435 MHz USB - Polish language 11m freeband 26.435 USB
26445 kHz 26.445 MHz USB - Sounds like two QSOs at once
26450 kHz 26.450 MHz Pager signals, some QRM from the guys on 26.445 USB
26475 kHz 26.475 MHz FM - Somebody keying a mic...maybe tuning up? 
26500 kHz 26.500 MHz Paging or data signals - carrier fading in and out, then bursts...then back to carrier
26504 kHz 26.504 MHz - Narrowband FSK bursts
26505 kHz 26.505 MHz FM - UNID language, weak signals
26510 kHz 26.510 MHz Carrier on/off, very weak, beacon??
26525 kHz 26.525 MHz FM - UNID language, very weak
26543 kHz 26.543 MHz - Narrowband FSK bursts
26561 kHz 26.561 MHz - Narrowband FSK bursts
26563 kHz 26.563 MHz - Narrowband FSK bursts
26595 kHz 26.595 MHz - Narrowband FSK bursts
26596 kHz 26.596 MHz - Narrowband FSK bursts
26620 kHz 26.620 MHz - Narrowband FSK bursts
26625 kHz 26.625 MHz - Multiple carrier FSK signal, 8 kHz wide, probably also a pager
26626 kHz 26.626 MHz - Narrowband FSK bursts
26630 kHz 26.630 MHz LSB - UNID voice chatter
26635 kHz 26.635 MHz - Very strong (S7-S8) and constant paging signal, roughly 8 kHz wide
26650 kHz 26.650 MHz - Paging signals, various signal strengths, 7-8 kHz wide
26652 kHz 26.652 MHz - Narrowband FSK bursts
26655 kHz 26.655 MHz - Data bursts, narrower than the "big" 26 MHz paging signals
26657 kHz 26.657 MHz - Narrowband FSK bursts
26665 kHz 26.665 MHz - Data link or paging signal, similar to 26.655 MHz
26675 kHz 26.675 MHz FM voice signals, sounds like German
26685 kHz 26.685 MHz - Narrowband FSK bursts
26695 kHz 26.695 MHz - POCSAG pager signals, solid S7-S8 signal, multiple signals on frequency
26700 kHz 26.700 MHz - Narrowband FSK bursts
26700 kHz 26.700 MHz - Wide POCSAG pager bursts mixing in, some QRM from 26.695 MHz
26705 kHz 26.705 MHz - Wide POCSAG paging signals
26706 kHz 26.706 MHz - Narrowband FSK bursts
26713 kHz 26.713 MHz - Narrowband FSK bursts
26719 kHz 26.719 MHz - Narrowband FSK bursts
26720 kHz 26.720 MHz - Carrier switching on and off, no modulation
26723 kHz 26.723 MHz - Narrowband FSK bursts
26729 kHz 26.729 MHz - Narrowband FSK bursts
26739 kHz 26.739 MHz - Narrowband FSK bursts, just barely outside the edge of the 26.745 MHz signal
26740 kHz 26.740 MHz - Data bursts, 4-5 kHz wide
26745 kHz 26.745 MHz - Another absurdly strong pager signal
26750 kHz 26.750 MHz - Paging signal - POCSAG, not as strong as 26.745 MHz, but there
26760 kHz 26.760 MHz LSB - Polish? language, weak
26765 kHz 26.765 MHz FM - Voice CB signal or freebander - weak
26773 kHz 26.773 MHz - Narrowband FSK bursts
26789 kHz 26.789 MHz - Narrowband FSK bursts
26786 kHz 26.786 MHz - Narrowband FSK bursts
26799 kHz 26.799 MHz - Carrier...then three short "dots", then nothing
26800 kHz 26.800 MHz - Paging signal
26805 kHz 26.805 MHz USB - French language chatter
26815 kHz 26.815 MHz - Paging signal, 8 kHz wide, S4-S5
26855 kHz POCSAG pager signals, solid S7-S8 signal, multiple signals on frequency
26858 kHz 26.858 MHz - Narrowband FSK bursts
26865 kHz 26.865 MHz - POCSAG pager signals, solid S7-S8 signal, multiple signals on frequency
26885 kHz 26.885 MHz FM - German language
26890 kHz 26.890 MHz - Narrowband FSK bursts
26900 kHz 26.900 MHz - POCSAG pager signals, solid S7-S8 signal, multiple signals on frequency
26925 kHz 26.925 MHz - Data bursts, 7-8 kHz wide
26945 kHz 26.945 MHz - Data bursts, fair signal


In-band
26960 - 27410 extremely busy, basically every 5-10 kHz there's a voice signal

26963 kHz 26.963 MHz - Narrowband FSK bursts
26970 kHz 26.970 MHz - Narrowband FSK bursts
26973 kHz 26.973 MHz - Narrowband FSK bursts
26983 kHz 26.983 MHz - Narrowband FSK bursts
26995 kHz 26.995 MHz - Numerous different data signals noted at once
27060 kHz 27.060 MHz - Narrowband FSK bursts
27069 kHz 27.069 MHz - Narrowband FSK bursts
27090 kHz 27.090 MHz - Narrowband FSK bursts
27120 kHz 27.120 MHz - Narrowband FSK bursts
27130 kHz 27.130 MHz - Narrowband FSK bursts
27144 kHz 27.130 MHz - Narrowband FSK bursts
27145 kHz 27.145 MHz - Various data signals at once
27195 kHz 27.195 MHz - FSK bursts, mixing in with AM and SSB (AM signal on 27.190 MHz, SSB on 27.200 LSB)
27222 kHz 27.222 MHz - Narrowband FSK bursts
27249 kHz 27.249 MHz - Narrowband FSK bursts
27250 kHz 27.250 MHz - Narrowband FSK bursts
27254 kHz 27.254 MHz - Narrowband FSK bursts
27255 kHz 27.255 MHz - Data bursts, the usual 6 kHz wide FSK bursts
27255 kHz 27.255 MHz - Narrowband FSK bursts
27258 kHz 27.258 MHz - Narrowband FSK bursts
27275 kHz 27.275 MHz - Narrowband FSK bursts, getting obliterated by QRM from all sides
27300 kHz 27.300 MHz - Very strong pager signal, non stop bursts, 10 kHz wide
27313 kHz 27.313 MHz - Narrowband FSK bursts
27360 kHz 27.360 MHz - Paging signal, 8 kHz bandwidth, multiple signals on frequency at once

The 27.4 MHz to 28 MHz region was full of SSB signals, also lots of FM and some AM signals - especially on 27.465 MHz - lots of strong Italian signals on 27.465 AM

27412 kHz 27.412 MHz - Narrowband FSK bursts, heavy QRM from 27.410 MHz USB and 27.415 MHz LSB
27450 kHz 27.450 MHz - Paging signal - noted FM carrier key up for several seconds before data burst, and then stay there
27505 kHz 27.505 MHz - 10 kHz wide signal - FSK carriers on 27.5 MHz and 27.51 MHz
27550 kHz 27.550 MHz - Paging signal - mixing in with the usual SSB activity around 27.555 MHz USB
27636 kHz 27.636 MHz - Narrowband FSK bursts, heavy QRM from 27.635 MHz USB
27641 kHz 27.641 MHz - Narrowband FSK bursts, getting clobbered by SSB signals
27647 kHz 27.647 MHz - Narrowband FSK bursts, heavy QRM from 27.645 MHz USB
27650 kHz 27.650 MHz - Narrowband FSK bursts
27650 kHz 27.650 MHz - Wider band data bursts as well
27692 kHz 27.692 MHz - Narrowband FSK bursts
27700 kHz 27.700 MHz USB - SSTV signals, nearly non-stop, some QRM from UK FM CB 27.70125 MHz
27780 kHz 27.780 MHz - Narrowband FSK bursts, QRM from UK FM channel 19 27.781.25 MHz
27815 kHz 27.815 MHz - Narrowband FSK bursts
27845 kHz 27.845 MHz - Data signal or pager - very strong QRM from UK FM on 27841.25
27850 kHz 27.850 MHz - Pager signal, lots of QRM from 27.845 MHz USB and 27.85125 MHz UK FM CB
27940 kHz 27.940 MHz - Carrier signal - data bursts every second or so
27940 kHz 27.940 MHz - Paging signal on top of the other data bursts on 27.94 MHz
27949 kHz 27.949 MHz - Narrowband FSK bursts
27950 kHz 27.950 MHz USB - French language chatter, heavy QRM, UK FM CB signals on 27.95125 as well
27953 kHz 27.953 MHz - Narrowband FSK bursts
27958 kHz 27.958 MHz - Narrowband FSK bursts
27964 kHz 27.964 MHz USB - French speaking stations - not on 27.965 MHz
27975 kHz 27.975 MHz - FSK signals, multiple carriers, sounds kind of like ROS mode...262
27989 kHz 27.989 MHz - Narrowband FSK bursts (or 27.990 MHz LSB mode)
27990 kHz 27.990 MHz USB - French language, mixing with data bursts
27992 kHz 27.992 MHz - Narrowband FSK bursts

Above 29.7 MHz:

29750 kHz 29.750 MHz - Strong pager signal, S6-S7 peak
29800 kHz 29.800 MHz - Strong pager signal or data link, S9 peak
29853 kHz 29.853 MHz - see below
29862 kHz 29.862 MHz - Sounds like "fast RTTY" or another data mode, identical to the signal on 29.853
29875 kHz 29.875 MHz - Narrowband FSK bursts
29875 kHz 29.875 MHz AM voice signal on this frequency as well, weak but there
29895 kHz 29.895 MHz - Narrowband FSK signal (constant signal)
29880 kHz 29.880 MHz - Narrowband FSK data signal (constant signal)
29900 kHz 29.900 MHz - Strong pager or data signal, similar to those heard on 26 MHz and 27 MHz - very strong
30000 kHz 30.000 MHz - Wideband data bursts (10-12 kHz)
30025 kHz 30.025 MHz - Paging signal, weak, similar to 30.000 MHz signal
30275 kHz 30.275 MHz - FM voice, weak, UNID, unknown language - presumably land mobile
30900 kHz 30.900 MHz - Paging signal or similar, multiple signals on same frequency 30.9 MHz
31187.5 kHz 31.1875 MHz - Paging signal, S4 or so
31320 kHz 31.320 MHz - Paging signal - various transmitters on same frequency

275

10/11 meters / 11 meter band activity 16 June 2022 - W3HFU KiwiSDR

« on: June 16, 2022, 1358 UTC »

Logs starting at 1345 UTC (0945 local)


25765 AM 25.765 MHz AM - Spanish language taxi cab dispatcher lady YL reading numeric taxi IDs, roger beep
26035 AM 26.035 MHz AM - Spanish language taxi cab dispatcher lady YL dispatch taxis
26555 LSB 26.555 MHz LSB - Spanish speaking freeband calling frequency - see also: 27455 USB
26570 LSB 26.570 MHz LSB - Spanish language chatter, Mexican accents (weak, heavy fading)
26585 AM 26.585 MHz AM - Latin American freebander AM / Mexican trucker frequency fading in at 1400 UTC
26615 USB 26.615 MHz USB - FSK data bursts, maybe 26.616 MHz USB works better - 26617 kHz center?
26915 AM 26.915 MHz AM - US freebanders working DX, some fading

lots of activity in-band, including 27025 AM CB channel 6, 27085 AM CB channel 11, 27265 AM CB channel 26, and the "Usual Suspects" for SSB activity, 27385 LSB, 27375 LSB, etc.

27695 LSB 27.695 MHz LSB - Spanish speaking freebanders - popular frequency
27745 AM 27.745 MHz AM - Spanish language taxi cab dispatcher - very weak
27890 USB 27.890 MHz USB - FSK data bursts - center frequency around 27.891 MHz (UK FM CB channel 31)

276

10/11 meters / 11 meter band activity 14 June 2022 - W3HFU KiwiSDR

« on: June 14, 2022, 1611 UTC »

25.665 MHz AM - Taxi cab dispatch lady - Spanish language YL dispatching taxi cabs
25.675 MHz FM - Was not able to tune in fast enough but there was certainly a FM signal there (!!!)
25.695 MHz AM - Taxi cab dispatch lady - Spanish language YL dispatching taxi cabs
25.705 MHz AM - Taxi cab dispatch lady - Spanish language YL dispatching taxi cabs
25.725 MHz AM - Taxi cab dispatch lady - Spanish language YL dispatching taxi cabs
25.735 MHz LSB - Spanish language chatter, fair to weak signals
25.745 MHz AM - Taxi cab dispatch lady - Spanish language YL dispatching taxi cabs
26.035 MHz AM - Taxi cab dispatch lady - Spanish language YL dispatching taxi cabs - same user heard on N1NTE SDR
26.175 MHz AM - Taxi cab dispatch lady - Spanish language YL dispatching taxi cabs
26.205 MHz AM - Taxi cab dispatch lady, can hear taxi drivers replying (dispatcher's carrier on 26205.4 kHz)
26.225 MHz USB - Spanish language 26 MHz DX frequency - sporadic signal
26.375 MHz AM - Spanish language chatter heard, freebanders
26.410 MHz USB - dial frequency 26.410 MHz or 26.411 MHz, FSK bursts noted (narrow) center 26.413 MHz
26.415 MHz AM - Spanish language chatter heard
26.555 MHz LSB - Spanish speaking / Latin American 11m DX frequency (see also: 27455 USB)
26.575 MHz AM - Spanish language freeband CBers, very busy (similar to 26585 AM)
26.585 MHz AM - the big one - lots and lots of strong signals
26.665 MHz AM - Spanish language chatter
26.695 MHz AM - Spanish language chatter
26.725 MHz AM - Spanish language speaking freebander common frequency
26.735 MHz AM - Weak AM signal, possibly truckers - this is CB channel 19 "down one band"
26.755 MHz AM - Spanish language chatter
26.765 MHz AM - Taxi cab dispatch lady - Spanish language YL dispatching taxi cabs
26.785 MHz AM - Weak AM signal noted
26.845 MHz AM - US based stations, informal QSO about weight, body types, etc. SIO 444 (at 1932 UTC)
26.875 MHz AM - US stations, midwestern (??) accents, fair to weak
26.915 MHz AM - US freeband CB calling frequency - 915 AM - channel 36 "down one band" 26915 AM 26.915 AM
26.925 MHz AM - Probably also taxi cab dispatcher - taxi lady Spanish language YL

27.625 MHz USB - mixing with 27625 AM signal on same frequency
27.625 MHz AM - Weak OM operators heard, probably truckers using export radios - channel 18 "up one band"
27.665 MHz USB - Spanish language
27.695 MHz LSB - Spanish language, casual QSOs, numerous stations on top of each other
27.695 MHz USB - Spanish language
27.705 MHz LSB - Spanish language, very strong signals
27.715 MHz LSB - Spanish language, casual QSO
27.730 MHz LSB - Spanish language
27.745 MHz AM - Taxi cab dispatch lady - Spanish language YL dispatching taxi cabs
27.785 MHz AM - Taxi cab dispatch lady - Spanish language YL dispatching taxi cabs
27.805 MHz AM - Taxi cab dispatch lady - Spanish language YL dispatching taxi cabs


R/C channels:


26.995 MHz 26995 kHz - At 1705 UTC tuned back in, hearing two FSK signals (26.995 MHz USB, center frequencies 26.996 and 26.997 MHz...now hearing what sounds like ROS data mode mixing in (again on 26.995 USB).  Numerous data signals on or around 26.995 center freq, 26.990 MHz to 27.000 MHz or so)

27.045 MHz 27045 kHz - Weak AM voice heard, sounds like a taxi cab dispatcher

27.095 MHz 27095 kHz - modulated FSK signal right on 27095.0 kHz, along with data bursts (similar to the ones usually heard on either side of 27.255 MHz) noted.  Several AM voice signals also heard, Spanish language

27.145 MHz 27145 kHz - 27145.2 carrier noted at 1711 UTC...unmodulated carrier or CW signal...then nothing.  At 1712 UTC, a multi-carrier FSK signal appeared on frequency, dial frequency 27.144 MHz USB or 27.143 MHz USB

27.195 MHz 27195 kHz - Noting a mixture of AM voice, the usually heard FSK data signal bursts and weak FM voice (Spanish language) on 27.195 MHz (R/C channel 19A).  Later SSB voice signals (27.195 MHz USB - Spanish language) also coming in with the mix!  Most of the signals heard here are regular AM voice signals mixing in with FSK data bursts

27.255 MHz 27255 kHz - Several FSK data bursts noted (usually with signals on 27.252 MHz or 27.253 MHz on the lower side of center frequency and again on 27.256 MHz or 27.257 MHz on the upper side of center frequency).  27.252 and 27.256 both very strong, another (different bandwidth) FSK burst noted on 27.254 MHz (possibly off-frequency).  LSB voice noted as well 27.255 MHz LSB mixing with AM voice and the data bursts.  Checked 27.255 MHz again at approx 1930 UTC and the usual data bursts are still there, but a bit weaker than before.  As expected, AM voice signals are also present on frequency (after all, 27255 is legal CB channel 23.

277

10/11 meters / 11 meter band activity 14 June 2022 - N1NTE KiwiSDR

« on: June 14, 2022, 1556 UTC »

Via N1NTE KiwiSDR1
Starting at 1545 UTC, noting the taxi cab dispatch ladies are coming in

27.815 MHz AM 27815 AM - Taxi cab dispatch lady - Spanish language YL dispatching taxi cabs
27.795 MHz AM 27795 AM - Taxi cab dispatch lady - Spanish language YL dispatching taxi cabs
27.785 MHz AM 27785 AM - Weak AM signals noted, UNID
27.765 MHz AM 27765 AM - Taxi cab dispatch lady - Spanish language YL dispatching taxi cabs
27.745 MHz AM 27745 AM - Taxi cab dispatch lady - Spanish language YL dispatching taxi cabs
27.695 MHz LSB 27695 LSB - Very busy with Latin American freebanders
27.455 MHz USB 27455 USB - Very very busy, Latin American 11m free band calling frequency
26.945 MHz AM 26945 AM - Spanish language chatter noted, heavy fading (OM stations, not taxi cabs)
26.915 MHz AM 26915 AM - US stations - AM 11M "low channel" DX channel, 915 AM - busy
26.885 MHz AM 26885 AM - Truckers, American accents - English language truckers using export radios
26.765 MHz AM 26765 AM - Taxi cab dispatch lady - Spanish language YL dispatching taxi cabs
26.585 MHz AM 26585 AM - Spanish language, heavy QRM at points, well known Latin American 11m freq
26.555 MHz LSB 26555 LSB - Very very busy, Latin American 11m free band calling frequency
26.035 MHz AM 26035 AM - Spanish language OM and YL heard - possibly taxi dispatch radio or other land mobile user
25.705 MHz AM 25705 AM - Taxi cab dispatch lady - Spanish language YL dispatching taxi cabs

Also want to note that the legal 40 CB channels were pretty busy as well, including 27.255 MHz 27255 CB channel 23 with FSK data bursts and the usual SSB fun on and around channel 38 LSB (27.385 MHz LSB, 27.390 MHz LSB and others)

278

10/11 meters / 11m DX Band Opening Activity 2 March 2022

« on: March 02, 2022, 1340 UTC »

1335 UTC noting activity on 27555 USB as well as QSO on 27520 USB, 27535 USB and 27525 USB

French language on 27520 USB at 1339 UTC, fair to good signals

"it was the 28th of February, Monday, we did that....on frequency 27.540 MHz, Andy, you're right here" on 27.525 MHz USB, mention of '26 division' (UK)


Paging signals on
26.150 MHz, 26.200 MHz, wide POCSAG on 26.250 MHz, 26.635 MHz, 26.650 MHz, 26.695 MHz, 26.745 MHz at 1340 UTC 

Now some weak FM on 26.655, some QRM from the data signal on 26.650 MHz.  26695 and 26745 both getting stronger

Now hearing SSB voice on 26.450 MHz USB with some POCSAG or FSK data underneath it.  26.445 USB also active.  Possibly Polish language?  Could be indicators of a European band opening.  FM signal on CB channel 3 - 26.985 MHz fading in at 1350 UTC, sounds like UK? 

Italian on 27.645 USB at 1351 UTC

"CQ West Indies, do QSY on 27495, 27.495, thank you" - 1352 UTC on 27.555 MHz USB

Narrowband FSK signals noted on 26.850 MHz, 26.730 MHz, 26.710 MHz, 26.620 MHz and 26.670 MHz.

1530 UTC:

26135 kHz 26.135 MHz AM - Spanish language, radio checks
26150 kHz 26.150 MHz - Paging wide POCSAG signal pager 26 MHz
26250 kHz 26.250 MHz - Paging wide POCSAG signal pager 26 MHz
26375 kHz 26.375 MHz AM - Spanish language taxi dispatcher lady taxi dispatch
26450 kHz 26.450 MHz - Paging wide POCSAG signal pager 26 MHz
26575 kHz 26.575 MHz AM - Spanish language
26635 kHz 26.635 MHz - Paging wide POCSAG signal pager 26 MHz
26635 kHz 26.635 MHz - FSK data signal, similar to signal logged on 26.750 MHz, 26.850 MHz and others
26650 kHz 26.650 MHz - Paging wide POCSAG signal pager 26 MHz
26695 kHz 26.695 MHz - Paging wide POCSAG signal pager 26 MHz
26695 kHz 26.695 MHz AM - Spanish language mixing in with pager signal
26730 kHz 26.730 MHz - Narrow FSK signal, 26730 kHz 26731 kHz
26745 kHz 26.745 MHz - Paging wide POCSAG signal pager 26 MHz
26750 kHz 26.750 MHz - FSK data signal - bursts, similar to signals often heard on 27.195 during Latin American openings
26755 kHz 26.755 MHz - Paging wide POCSAG signal pager 26 MHz
26825 kHz 26.825 MHz FM - FM voice noted on waterfall, didn't get a chance to tune in to hear language
26833 kHz 26.833 MHz - Narrow FSK signal
26835 kHz 26.835 MHz - Paging wide POCSAG signal pager 26 MHz (the 26833 signal is much stronger)
26850 kHz 26.850 MHz - FSK data signal, very similar to signal noted on 26.75 MHz
26858 kHz 26.858 MHz - Narrow FSK signal
26900 kHz 26.900 MHz - Paging wide POCSAG signal pager 26 MHz
26935 kHz 26.935 MHz AM - Spanish language chatter, possibly taxi dispatcher
26935 kHz 26.935 MHz - Paging wide POCSAG signal pager 26 MHz
26950 kHz 26.950 MHz - Wide FSK signal (7-8 kHz wide, similar to POCSAG signals noted on other 26 MHz freqs)
26950 kHz 26.950 MHz - Another odd signal, sounds like 3 beeps every few seconds, 26950.5
26963 kHz 26.963 MHz - Narrow FSK bursts
27020 kHz 27.020 MHz - Narrow FSK signal
27175 kHz 27.175 MHz FM - Spanish language FM heard mixing with AM signals - CB channel 18
27275 kHz 27.275 MHz FM - Spanish language FM heard - CB channel 27
27325 kHz 27.325 MHz FM - Spanish language FM CB channel 32
27635 kHz 27.635 MHz USB - ROS data mode noted - good signals!

1930 UTC:

25895 kHz 25.895 MHz AM - Spanish language taxi dispatcher lady taxi dispatch
26005 kHz 26.005 MHz AM - Spanish language taxi dispatcher lady taxi dispatch
26055 kHz 26.055 MHz AM - Spanish language taxi dispatcher lady taxi dispatch
26375 kHz 26.375 MHz AM - Spanish language taxi dispatcher lady taxi dispatch
26445 kHz 26.445 MHz AM - Spanish language, busy at points
26475 kHz 26.475 MHz AM - Spanish language chatter, probably same group of guys usually heard on 26585 AM, etc.
26500 kHz 26.500 MHz USB - Spanish language, noted in use previously Caribbean 11 meter DX frequency
26505 kHz 26.505 MHz AM - Spanish language taxi dispatcher lady taxi dispatch
26540 kHz 26.540 MHz LSB - Spanish language chatter, very busy - likely QSY from 26.555 LSB
26555 kHz 26.555 MHz LSB - Spanish language chatter, also very busy
26555 kHz 26.555 MHz AM - Noted AM carrier and what sounded like a YL taxi dispatcher - poor frequency choice!
26565 kHz 26.565 MHz AM - Busy with Latin American DX - Spanish language
26575 kHz 26.575 MHz AM - Busy with Latin American DX - Spanish language
26585 kHz 26.585 MHz AM - Mexican trucker 26 MHz frequency, very busy

27990 kHz 27.990 MHz - Narrow FSK data burst signals
27995 kHz 27.995 MHz USB - Spanish language chatter

279

10/11 meters / 11m DX Band Opening Activity 1 March 2022

« on: March 01, 2022, 2150 UTC »

25615 AM 25.615 MHz AM - Weak AM voice here, with roger beeps - presumed taxi cab dispatch
25635 LSB 25.635 MHz LSB - Spanish language chatter, two OMs having a casual CB-like QSO (not a taxi dispatcher)
25695 AM 25.695 MHz AM - Taxi dispatch lady YL speaking Spanish (taxi ID numbers) taxi dispatcher
25985 AM 25.985 MHz AM - Taxi dispatch lady YL speaking Spanish (taxi ID numbers) taxi dispatcher
26055 AM 26.055 MHz AM - Taxi dispatch lady YL speaking Spanish (taxi ID numbers) taxi dispatcher
26105 AM 26.105 MHz AM - Spanish language CBers
26175 AM 26.175 MHz AM - Spanish language CBers
26405 AM 26.405 MHz AM - Spanish language CBers
26515 AM 26.515 MHz AM - Spanish language CBers
26540 LSB 26.540 MHz LSB - Spanish language, likely QSY'ed from 26.555 MHz LSB
26555 LSB 26.555 MHz LSB - Spanish language, similar to 27.455 USB
26565 AM 26.565 MHz AM - Heard mention of "Puerto Rico"
26585 AM 26.585 MHz AM - Commonly used Mexican trucker/CB frequency, very busy
26605 AM 26.605 MHz AM - Spanish language CBers
26705 AM 26.705 MHz AM - BIG signals - lots of splatter from 26.715 MHz and 26.725 MHz
26715 AM 26.715 MHz AM - More big signals, similar to 27005 27015, 27025, 27035, 26705, etc.
26725 AM 26.725 MHz AM - 11 meter Spanish language version of channel 6

280

10/11 meters / 11m DX Band Opening Activity 17 February 2022

« on: February 17, 2022, 1911 UTC »

Mostly Latin American in origin at tune-in at 1800 UTC:

25710 FMCW 25.710 MHz - Center frequency, OTH Radar
25725 AM 25.725 MHz AM - Taxi dispatcher YL reading numbers in Spanish - taxi cab dispatch
25875 FMCW 25.875 MHz - Center frequency, OTH Radar
25965 AM 25.965 MHz AM - Weak chatter heard, likely two-way land mobile users, taxi or trucking company 25 MHz
25985 LSB 25.985 MHz LSB - Portuguese chatter noted at 1901 UTC, decent signals, informal chatter
26005 AM 26.005 MHz AM - Taxi dispatcher YL reading numbers in Spanish - taxi cab dispatch
26100 FMCW 26.100 MHz - Center frequency, OTH Radar
26165 AM 26.165 MHz AM - Taxi dispatcher YL reading numbers in Spanish - taxi cab dispatch
26205 AM 26.205 MHz AM - Taxi dispatcher YL reading numbers in Spanish - taxi cab dispatch
26365 AM 26.365 MHz AM - OMs speaking Spanish, lots of music and noise toys
26375 AM 26.375 MHz AM - Taxi dispatcher YL reading numbers in Spanish - taxi cab dispatch
26445 AM 26.445 MHz AM - Spanish language, sporadic signal
26475 AM 26.475 MHz AM - Spanish language chatter, similar to other 25 MHz and 26 MHz 11m stuff
26500 LSB 26.500 MHz LSB - Spanish language, active frequency
26515 AM 26.515 MHz AM - Several stations mixing together, lots of noise toys/recorded sounds on frequency
26525 AM 26.525 MHz AM - Taxi dispatcher, mixing with SSB QRM from 26.530 MHz LSB
26530 LSB 26.530 MHz LSB - Spanish language QSO
26540 LSB 26.540 MHz LSB - Spanish language activity, QSY'ed from 26.555 LSB almost certainly
26555 LSB 26.555 MHz LSB - Latin American DX calling frequency, very busy at points
26565 AM 26.565 MHz AM - Lots of signals from Latin America booming in
26575 AM 26.575 MHz AM - Lots of signals from Latin America booming in
26585 AM 26.585 MHz AM - Very busy, tons of signals on top of each other, similar to 26.575 AM, 26.605 AM, etc.
26595 AM 26.595 MHz AM - Similar to 26.585 MHz, lots of QRM, music, sound effects, etc.
26605 AM 26.605 MHz AM - Spanish language, some very strong signals
26610 FSK 26.610 MHz FSK bursts, narrowband FSK signals, would have been closer to 26.609 MHz maybe
26625 AM 26.625 MHz AM - OM working at least one other station, Spanish language
26625 FM 26.625 MHz FM - FM signals mixing in with AM QRM - confirmed active FM at 1908 UTC (Spanish language)
26635 AM 26.635 MHz AM - OM doing radio checks, lots and lots of echo (Spanish)
26705 AM 26.705 MHz AM - BIG RADIOS channel, very busy
26765 AM 26.765 MHz AM - Spanish language, possibly taxi cab dispatcher
26785 FM 26.785 MHz FM - FSK signal, 6-8 kHz wide, sounds a lot like POCSAG - likely a pager system
26785 AM 26.785 MHz AM - Taxi dispatcher YL reading numbers in Spanish - taxi cab dispatch with roger beeps
26820 FM 26.820 MHz FM or CW - Carrier signal dropped in, and then out again, UNID
26845 AM 26.845 MHz AM - Taxi or trucker?  Weak signals, with roger beeps noted
26925 AM 26.925 MHz AM - Several signals mixing in with each other, reminds me of the activity usually heard on 26.935 MHz
26935 AM 26.935 MHz AM - Numerous signals mixing together, Spanish language
26945 AM 26.945 MHz AM - Taxi dispatcher YL reading numbers in Spanish - taxi cab dispatch, good signals
26955 AM 26.955 MHz AM - Taxi dispatcher YL reading numbers in Spanish with roger beeps
Nearly all 40 legal channels active, some notes:
27095 AM 27.095 MHz AM - RC Channel "11A" - YL taxi dispatcher mixing with some faint FSK data bursts
27195 AM 27.195 MHz AM - RC Channel "19A" - strong YL taxi dispatch lady, the usual FSK in the background
27255 AM 27.255 MHz AM - Several AM signals mixing with at least two different data signals

Above 27365 or so, tons and tons of SSB activity, including somewhat oddball frequencies, like 27.710 MHz LSB, 27.730 MHz LSB and others.
27715 AM 27.715 MHz AM - Taxi dispatcher mixing in with SSB QRM from 27.710 LSB, 27.715 USB and others
27755 AM 27.755 MHz AM -  Taxi dispatcher YL in Spanish on 27.755 AM, can hear taxi drivers replying to her!
27765 AM 27.765 MHz AM - Taxi dispatcher YL reading numbers in Spanish - taxi cab dispatch
27775 AM 27.775 MHz AM - Taxi dispatcher YL reading numbers in Spanish - taxi cab dispatch
27775 LSB 27.775 MHz LSB - SSB freebanders mixing in with the taxi dispatcher
27785 AM 27.785 MHz AM - Taxi dispatcher YL reading numbers in Spanish - taxi cab dispatch
27800 LSB 27.800 MHz LSB - Spanish language chatter
27815 AM 27.815 MHz AM - Taxi dispatcher YL - noted Mexico City taxi cab radio taxi 27.815 AM
27885 AM 27.885 MHz AM - Taxi dispatcher YL reading numbers in Spanish - taxi cab dispatch
27925 AM 27.925 MHz AM - Heard the intro to "Bad To The Bone" and Spanish language chatter
27965 AM 27.965 MHz AM - Taxi dispatcher YL reading numbers in Spanish - taxi cab dispatch

281

10/11 meters / 11m Pager Data and other activity 10 February 2022

« on: February 10, 2022, 1731 UTC »

More 11 meter action today:

25695 kHz / 25.695 MHz AM - Taxi dispatcher - indicating a band opening to Latin America - YL dispatch taxi lady
25735 kHz / 25.735 MHz AM - Taxi dispatch lady - Spanish language YL reading numbers - YL dispatch taxi lady
25745 kHz / 25.745 MHz AM - Taxi dispatch lady - Spanish language YL reading numbers - YL dispatch taxi lady
25950 kHz / 25.950 MHz FM - Studio Transmitter Link - 25.950 FM, fading in and out
26005 kHz / 26.005 MHz AM - YL dispatcher, weak, presumed Latin American taxi dispatch
26035 kHz / 26.035 MHz AM - Taxi dispatch lady, very strong at points - Spanish
26250 kHz / 26.250 MHz - FM carrier, closer to 26.251 (sort of).  - This is a known UK hospital paging frequency
26415 kHz / 26.415 MHz AM - Taxi dispatcher, Spanish language with roger beeps
26455 kHz / 26.455 MHz AM - Taxi dispatcher, Spanish language - female dispatcher YL dispatch lady
26475 kHz / 26.475 MHz AM - Spanish language chatter, lots of noise and sound effects at points
26505 kHz / 26.505 MHz AM - Spanish language, possibly also taxi cab dispatcher
26515 kHz / 26.515 MHz FM - There seems to be an FM signal mixing in with the AM activity, may be a pager?
26515 kHz / 26.515 MHz AM - Lots of roger beeps and noise toys heard, presumably Latin American origin
26585 kHz / 26.585 MHz AM - Very very busy, Mexican trucker channel, heavy QRM
26635 kHz / 26.635 MHz - European paging frequency, FSK signals noted
26665 kHz / 26.665 MHz USB - Spanish language chatter heard
26730 kHz / 26.730 MHz - Narrowband FSK signals, would be 26.728 MHz USB or 26.729 MHz USB
26805 kHz / 26.805 MHz AM - Spanish language, likely taxi cab dispatcher
26805 kHz / 26.805 MHz FM - FM voice activity noted around 1730 UTC / 1735 UTC
26830 kHz / 26.830 MHz - Strong carrier, no modulation...then disappeared, seemed like a pager
26833 kHz / 26.833 MHz - Narrowband FSK signals
26835 kHz / 26.835 MHz- FSK paging signal - 6-7 kHz wide, can be tuned in 26.835 MHz LSB or USB mode
26859 kHz / 26.859 MHz - Narrowband FSK signals, similar to the ones on 26833 kHz
26892 kHz / 26.892 MHz - Narrowband FSK signals
26935 kHz / 26.935 MHz AM - Very strong signals from Latin America booming in
26954 kHz / 26.954 MHz - Narrowband FSK signals, possibly off-frequency 26.955 MHz 26955 kHz 26950 kHz
27195 kHz / 27.195 MHz - FSK signal burst, every 3-4 seconds, previously monitored, multiple transmitters on frequency
27255 kHz / 27.255 MHz - FM FSK Data Bursts, known US-based data link 27 MHz based system 27.255 FM
27256 kHz / 27.256 MHz - Narrowband FSK signals, off-frequency from 27.255 MHz 27.255
27333 kHz / 27.333 MHz (would be 27.331 MHz USB or 27.332 USB) - FSK strong - mixing with QRM from 27.335
27685 kHz / 27.685 MHz - Narrowband FSK signals, would be 27.684 MHz or 27.683 MHz in USB mode
27765 kHz / 27.765 MHz LSB - Spanish language, very good signals
27815 kHz / 27.815 MHz AM - Spanish speaking taxi dispatcher lady, good signals - likely Mexico City (confirmed user)
27882 kHz / 27.882 MHz - Narrowband FSK signals, might be closer to 27.880 MHz or 27.881 MHz
27885 kHz / 27.885 MHz AM - Taxi dispatcher, Spanish language
27893 kHz / 27.893 MHz - Narrowband FSK signals

282

10/11 meters / 11m Pager Data and other activity 1600+ UTC 9 February 2022

« on: February 09, 2022, 1634 UTC »

Noting FSK signals on numerous frequencies in the 26 MHz region, as well as:

26569 FM - Narrow FSK bursts
26610 FM - 26.610 MHz or 26.609 MHz, very strong FSK signal
26635 FM - POCSAG
26695 FM - POCSAG
26705 FM - FSK signal
26710 FM - Narrow FSK bursts
26730 FM - Narrow FSK bursts
26745 FM - Nice paging signal faded in
27195 FM - Very strong data signal - seemed like an AM-modulated series of tones


Also, lots and lots of Spanish language taxi dispatch ladies, including 25.695 MHz, 26.935 MHz, 27.365 MHz (CB channel 36, in-band, nice!), 27.745 MHz and our friends in Mexico City on 27.815 MHz / 27815 AM

At 1630 UTC, some data mixing in with AM voice - another taxi cab dispatcher YL operator reading numbers (taxi IDs) on CB channel 23 - 27.255 MHz / RC Channel.

27755 AM - Taxi dispatcher
27935 FM - French language (yes, in FM mode, and not on UK FM CB CH 34 27.931.25 FM, they're on 27.935 MHz!)

27255 AM - a different taxi dispatcher, multi-tone roger beep, mixing with some (weak) FSK
26.745 MHz at 1638 UTC, the signal is still there, roughly 6 kHz wide, you can tune it on either 26745 USB or 26745 LSB (like many of the paging signals coming out of Europe).  At the same time, the paging or data signal on 26.695 is getting stronger....then both 26695 and 26745 faded almost completely out for a few moments and then came back in.

26665 USB - somebody doing radio tests, whistling
26695 fading in and out
26800 FM - narrow FSK signal
26837.5 or 26838 - narrow FSK signal, would probably tune on 26.840 MHz LSB
27705 AM - Taxi dispatcher
27725 AM - Taxi dispatcher
27775 AM - Taxi dispatcher
27785 AM - Taxi dispatcher
26859 or 26860 - narrow FSK signal, center frequency is just a bit below 26.860 MHz
27900 USB - very strong QSO in Spanish, two OMs having casual QSO, 27.900 MHz USB 27.9 MHz 27.9 USB
25875 USB - center frequency 25.876 MHz or maybe 25876 kHz, another strong data signal

283

10/11 meters / 11 meter activity 29 October 2021

« on: October 29, 2021, 1905 UTC »

At 1900 UTC, hearing some US stations working DX on the good old' 26.915 MHz AM frequency.  Sporadic, but its there.  Sounds like numerous stations on top of each other.  Channels 6 is busy.

Also, hearing FM on CB channel 30 at 1905 UTC - 27.305 MHz FM 27.305 FM

284

10/11 meters / 11 meters 28 OCT 2021

« on: October 28, 2021, 1236 UTC »

First off, happy FM is now legal on CB radio day!

At 1230 UTC the band is pretty quiet.  However, there is some faint traffic on 26745 AM 26.745 MHz AM - it sounds like a taxi dispatcher - female taxi controller reading numbers in Spanish.  26.745 MHz is one of those frequencies that often stays clear because its so close to the "big radio channels" - in this case, 26.705 MHz, 26.715 MHz and 26.725 MHz.  26.735 MHz is channel 19 down one band so its often used by truckers and other business or land mobile users looking for a clear channel.  See also - channel 19 up one band - 27.635 MHz, channel 19 down two bands - 26.285 MHz and channel 19 down three bands - 25.835 MHz.  I've heard local traffic on 25.835 MHz AM numerous times, and it was always truckers.  On most export radios, the legal CB band is Band D, so 25.835 MHz is channel 19 on Band A.  Its often easier to simply flip the band switch and leave the channel selector knob alone.  Need a clear channel?  Well, you're both already on CB channel 19 27.185 MHz..simply flip the band switch from D to A and you have a clear frequency. 

Also noting some activity on channel 7 - 27.035 MHz AM - appears to be Latin American stations

1400 UTC - the band appears to have quieted down a little bit...checking numerous KiwiSDRs on the US East Coast and it appears like things are pretty quiet

285

10/11 meters / 26 MHz Pager Frequencies - European 11m Paging Band Opening Indicators

« on: October 27, 2021, 1219 UTC »

Here is a list of active paging and telemetry frequencies - all European in origin.  All frequencies are confirmed as active as of October 2021.  Many of these systems transmit an "idle" signal every 2-10 seconds, even if no data is being sent.  Others only transmit when needed. On the more active 26 MHz frequencies, several different signals may be noted on the same frequency.



Based on listening on several European SDRs:


26150 kHz 26.150 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26200 kHz 26.200 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26250 kHz 26.250 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26300 kHz 26.300 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26350 kHz 26.350 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26400 kHz 26.400 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26435 kHz 26.435 MHz - POCSAG hospital paging/other modes - noted use in UK
26450 kHz 26.450 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26550 kHz 26.550 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26555 kHz 26.555 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26600 kHz 26.600 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26610 kHz 26.610 MHz - POCSAG and FSK data, includes offset frequencies 26.608 MHz, 26.607 MHz
26645 kHz 26.645 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26650 kHz 26.650 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26655 kHz 26.655 MHz - POCSAG - narrow - noted in mainland Europe
26670 kHz 26.670 MHz - POCSAG - wide and narrow
26695 kHz 26.695 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26700 kHz 26.700 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26705 kHz 26.705 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26745 kHz 26.745 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26750 kHz 26.750 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26755 kHz 26.755 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26845 kHz 26.845 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26850 kHz 26.850 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26855 kHz 26.855 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26900 kHz 26.900 MHz - Telemetry FSK signals - noted in use mainland Europe
26945 kHz 26.945 MHz - Telemetry, paging and 2-watt data link systems
26950 kHz 26.950 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26955 kHz 26.955 MHz - European paging, hospital pager data telemetry - POCSAG and other modes
26960 kHz 26.960 MHz - Telemetry, paging and 2-watt data link systems
26995 kHz 26.995 MHz - R/C Channel worldwide data link and telemetry
27002 kHz 27.002 MHz - POCSAG narrow POCSAG wide (offset frequency)
27007 kHz 27.007 MHz - POCSAG narrow and FSK telemetry (offset frequency)
27045 kHz 27.045 MHz - R/C Channel worldwide data link and telemetry
27095 kHz 27.095 MHz - R/C Channel worldwide data link and telemetry, Eurobalise downlink (train data radio system)
27120 kHz 27.120 MHz - FSK data link signals noted here on German and Swiss SDRs
27145 kHz 27.145 MHz - R/C Channel worldwide data link and telemetry
27190 kHz 27.190 MHz - Paging - data links and telemetry center frequency (confirmed active late October 2021)
27195 kHz 27.195 MHz - R/C Channel worldwide data link and telemetry
27200 kHz 27.200 MHz - Paging - data links and telemetry center frequency (confirmed active late October 2021)
27250 kHz 27.250 MHz - POCSAG and other data modes
27255 kHz 27.255 MHz - R/C Channel worldwide data link and telemetry
27300 kHz 27.300 MHz - POCSAG and other data modes
27350 kHz 27.350 MHz - POCSAG and other data modes
27400 kHz 27.400 MHz - POCSAG and other data modes
27450 kHz 27.450 MHz - POCSAG and other data modes


The European standardized or harmonized 26 MHz paging band extends from 26.200 MHz to 26.935 MHz or 26200 kHz to 26935 kHz (according to several sources). 

Others indicate that the band extends from 26.175 MHz to 26.950 MHz or 26175 kHz to 26950 kHz.  The 26.995, 27.045, 27.095, 27.145 and 27.195 frequencies are standardized throughout Europe for model control telecommand radio control RC use.  The standardized 27 MHz ISM band (center frequency 27.120 MHz 27120 kHz +/- 163 kHz for a frequency range of 26.957 MHz to 27.283 MHz / 26957 kHz to 27283 kHz) also applies and the same range is permitted for very low power short range devices - nonspecific SRDs.

The table of frequency allocations breaks the bands down as follows:

26100 kHz - 26175 kHz 26.100 MHz - 26.175 MHz - Maritime Mobile - DSC, marine HF radio, military communications

26175 kHz - 26200 kHz 26.175 MHz - 26.200 MHz - Fixed and Mobile - Fixed service, military mobile

26200 kHz - 26350 kHz 26.200 MHz - 26.350 MHz - Fixed and Mobile - Fixed service, military mobile

26350 kHz - 27500 kHz 26.350 MHz - 27.500 MHz - Fixed and Mobile - CB radio (EN 300 433 band 26.96-27.41 MHz)

27500 kHz - 28000 kHz 27.500 MHz - 28.000 MHz - Fixed, Mobile, Meteorological Aids - Military mobile communications systems, including aeronautical military systems, land mobile military systems