LZ1UX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Bulgaria Most frequent locator attributed to this token: KN13

Receiver-side FT8 activity involving LZ1UX, decoded by SO8OO in southeastern Poland. 564 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 35 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-17.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 564 FT8 messages attributed to LZ1UX as the transmitting token by decoded message structure across 35 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (49%), followed by 20 m (47%) and 10 m (4%). Most decodes (57%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (74%); the estimated median was -3 dB.

Overview

564
Messages attributed
35
UTC dates decoded
167
Active 15-min windows
-3 dB
Estimated median S/N

Bands

40m · 278 20m · 264 10m · 22
First attributed message: 2026-06-07
Last attributed message: 2026-08-17 12:38 UTC

Observed FT8 message patterns

Attributed sample
564 messages
Active dates
35 UTC dates
Estimated median S/N
-3 dB
Estimated 10th-90th percentile
-13.4 to +7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 26, moderate (-15 to -9 dB) 120, strong (≥ -8 dB) 418.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with LZ1UX in decoded directed-looking exchanges:

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to LZ1UX

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator
KN13 · 317 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
722 km (approx.)
Last such locator decoded
2026-08-16 18:45 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

Observed FT8 exchanges

S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.

Time UTCBandLZ1UX S/NCounterpartCounterpart S/NMsgsCapture
08-17 12:37 20m -8 / - PJ4NX - / -30 2 Partial capture
08-16 18:44 20m -8 / - CR5VP - / - 2 Partial capture
08-12 09:35 20m - / - PA0LDE -13 / - 2 Partial capture
08-12 09:33 20m -7 / - CR5VP - / -7 3 Partial capture
08-05 20:43 20m - / +5 CR5VP 0 / - 2 ✓ Closing fragment
08-05 20:32 20m - / -6 CR5VP -2 / - 2 Partial capture
07-27 04:08 20m -9 / - HI8UD - / -17 3 Partial capture
07-26 20:36 20m -2 / - F/G7NUT - / -10 2 Partial capture
07-26 19:31 20m -8 / - HI8UD - / - 2 Partial capture
07-24 04:22 40m -12 / - <...> - / - 4 Partial capture
07-23 03:27 40m -15 / - ZS1CF - / -12 3 ✓ Closing fragment
07-20 22:48 20m +1 / - D2UY - / -9 3 ✓ Closing fragment
07-20 21:39 20m -15 / - D44AG - / - 4 Partial capture
07-20 18:21 20m -13 / - <...> - / -16 2 Partial capture
07-19 16:53 40m -10 / - 9A60CBM - / +2 3 Partial capture
07-19 03:44 40m -12 / - ZL2CA - / - 2 Partial capture
07-19 01:45 40m -9 / - ZS1BHJ - / -16 3 ✓ Closing fragment
07-18 21:09 10m -2 / - HI8JWM - / -7 4 ✓ Closing fragment
07-18 20:27 10m 0 / - HI8JWM - / - 2 Partial capture
07-18 20:25 10m -10 / - PY5QR - / - 2 Partial capture
07-18 20:22 10m +3 / - CE3TMM - / - 4 ✓ Closing fragment
07-18 20:16 10m 0 / - HI8JWM - / - 3 Partial capture
07-18 03:03 40m - / - F5RRS -18 / - 4 Partial capture
07-18 03:01 40m -8 / - EA8FJ - / - 2 ✓ Closing fragment
07-17 21:53 20m -1 / - EA8BYO - / -16 11 Partial capture
07-17 21:34 20m -12 / - TJ1GD/P - / - 5 Partial capture
07-17 21:14 10m - / -14 9K2YM -11 / - 2 ✓ Closing fragment
07-17 07:06 20m -6 / - TI5RR - / -24 4 ✓ Closing fragment
07-17 06:57 20m -16 / - 3V8HP - / - 6 Partial capture
07-10 20:14 40m -4 / - YH7AA - / -14 3 ✓ Closing fragment
07-10 19:57 40m 0 / - YH2AZ - / -15 2 Partial capture
07-10 18:31 20m -12 / - YH9GB - / -8 2 Partial capture
07-10 18:22 20m -12 / - YH7AA - / - 2 Partial capture
07-08 19:51 20m - / - EA1IOK -16 / - 3 Partial capture
07-04 20:32 40m - / - PE1NPS -17 / - 2 Partial capture
07-04 18:47 20m - / -14 II7WWA -4 / - 2 ✓ Closing fragment
07-04 18:25 40m - / -7 DK7ZT -21 / - 2 Partial capture
07-04 18:22 40m -15 / -2 TM2WWA -11 / -12 5 ✓ Full exchange observed
07-04 18:14 20m -6 / -7 II5WWA -2 / - 5 ✓ Closing observed
07-04 17:21 40m - / +5 DK7ZT -10 / - 3 Partial capture
07-04 17:20 40m -20 / - SN0WWA - / -15 2 ✓ Closing fragment
07-04 07:27 20m - / - II3WWA -8 / - 2 ✓ Closing fragment
07-02 11:51 20m - / - F5IXN -16 / - 2 Partial capture
06-30 13:35 20m -16 / - TM2WWA -4 / -5 4 ✓ Full exchange observed
06-30 11:56 10m - / - DO1FDK +4 / - 2 Partial capture
06-30 11:54 10m - / +2 CR2WWA -15 / - 2 ✓ Closing fragment
06-30 11:11 20m - / - DK7UY -10 / - 2 Partial capture
06-30 10:43 20m -8 / - OL6WWA -1 / -5 3 Partial capture
06-29 21:10 40m -1 / - TM8WWA - / -11 3 ✓ Closing fragment
06-29 21:09 40m -8 / - II8WWA - / -13 2 Partial capture

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

20m 
UTC    dB Audio  Message
040915 -12 1032  HI8UD LZ1UX R-17 (x2)
203200  -1  420  LZ1UX CR5VP -06 (x4)
093300  -5  564  CR5VP LZ1UX KN13 (x3)
093545 -11  812  LZ1UX PA0LDE JO22 (x2)
184445  -5  667  CR5VP LZ1UX KN13 (x2)
123700  -7  974  PJ4NX LZ1UX R-30 (x2)
10m 
UTC    dB Audio  Message
201730  -1  499  HI8JWM LZ1UX KN13
202230  +3  707  CE3TMM LZ1UX KN13 (x4)
202430  -2  707  PU2BRU LZ1UX R-02
202545  -9 1099  PY5QR LZ1UX KN13 (x2)
202730  -1  500  HI8JWM LZ1UX KN13 (x6)
123430 -12 1403  LZ1UX F5ADE +16
40m 
UTC    dB Audio  Message
014630  -7  928  ZS1BHJ LZ1UX 73
034400 -10 1038  ZL2CA LZ1UX KN13 (x2)
165345 -10  708  9A60CBM LZ1UX KN13 (x3)
032730 -16 1125  ZS1CF LZ1UX KN13 (x3)
041830 -11  716  <...> LZ1UX KN13
042145 -23 1525  LZ1UX IZ3QCH JN55
042200 -12  717  <...> LZ1UX KN13 (x4)

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee