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

[R4002]

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