UR4LBG — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Ukraine Most frequent locator attributed to this token: KN89

Receiver-side FT8 activity involving UR4LBG, decoded by SO8OO in southeastern Poland. 960 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 73 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-20.

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 960 FT8 messages attributed to UR4LBG as the transmitting token by decoded message structure across 73 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (78%), followed by 10 m (9%) and 40 m (8%). Most decodes (66%) fell within the six-hour window 22:00-04:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (71%); the estimated median was -4 dB.

Overview

960
Messages attributed
73
UTC dates decoded
197
Active 15-min windows
-4 dB
Estimated median S/N

Bands

80m · 745 40m · 78 20m · 48 10m · 89
First attributed message: 2026-06-06
Last attributed message: 2026-09-20 15:53 UTC

Observed FT8 message patterns

Attributed sample
960 messages
Active dates
73 UTC dates
Estimated median S/N
-4 dB
Estimated 10th-90th percentile
-16 to +5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 102, moderate (-15 to -9 dB) 176, strong (≥ -8 dB) 682.

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 UR4LBG 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 UR4LBG

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
KN89 · 616 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,093 km (approx.)
Last such locator decoded
2026-09-20 15:52 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 UTCBandUR4LBG S/NCounterpartCounterpart S/NMsgsCapture
09-20 15:51 80m -5 / - YE4FNN - / -12 5 ✓ Closing fragment
09-19 16:31 80m -10 / - YE4FNN - / - 4 Partial capture
09-17 16:51 80m -1 / - II8IHBC - / -18 4 Partial capture
09-16 23:11 80m +16 / - RI1FJZ - / -10 4 Partial capture
09-16 03:03 40m -15 / - II4IANT - / -14 2 Partial capture
09-16 02:48 80m -5 / -16 KE4EB -18 / -11 14 ✓ Full exchange observed
09-15 21:45 80m -9 / -2 DA0O -11 / -10 4 ✓ Full exchange observed
09-15 21:33 80m +1 / - EM90ZMV - / -7 3 Partial capture
09-14 03:47 80m -18 / - W4PSK - / - 2 Partial capture
09-14 03:45 80m -20 / - HC1BG - / - 2 Partial capture
09-14 03:37 80m -20 / - HC1BG - / - 7 Partial capture
09-14 03:11 80m -13 / - VA3DIF - / - 5 Partial capture
09-14 03:01 40m -3 / - YN9ZDJ - / - 3 Partial capture
09-14 02:58 40m -5 / - YN9ZDJ - / - 2 Partial capture
09-14 02:22 80m -1 / - K3RA - / - 3 Partial capture
09-14 02:20 80m -3 / - SM2LKW -17 / -10 4 ✓ Closing observed
09-14 02:14 80m +1 / - W8HW - / - 4 Partial capture
09-13 17:15 80m +4 / - YL3NT - / - 2 Partial capture
09-13 02:59 40m -14 / -17 HK3G -18 / -16 5 Partial capture
09-12 01:36 80m +3 / - HC1DAZ - / -18 5 ✓ Closing fragment
09-12 01:31 80m - / -7 R2EN -4 / - 2 Partial capture
09-12 01:30 80m +4 / -9 DO4EB -13 / -3 5 ✓ Full exchange observed
09-10 03:30 40m -7 / - HK3YL - / - 3 Partial capture
09-10 03:15 40m -3 / - ZL1RPC/P - / - 5 Partial capture
09-10 03:07 40m -16 / - SP1373AB - / - 3 Partial capture
09-10 03:03 40m -8 / - EG42SDC - / - 7 Partial capture
09-09 23:03 80m -2 / -15 KP4AA -21 / -16 3 ✓ Full exchange observed
09-09 22:49 80m -10 / - 7Z1BQ - / - 3 Partial capture
09-09 03:39 40m -4 / - SP3SWJ - / -2 2 ✓ Closing fragment
09-09 03:38 40m -4 / - SQ2BXI - / +5 2 ✓ Closing fragment
09-09 03:33 40m -8 / -14 HC2GRC -5 / -10 11 ✓ Full exchange observed
09-08 22:14 80m - / - UA4FKT -1 / - 3 Partial capture
09-08 22:13 80m +1 / - DU2W - / -14 3 ✓ Closing fragment
09-08 21:58 80m -2 / - DU2W - / - 2 Partial capture
09-08 01:26 40m - / -15 D44TWO -16 / - 5 ✓ Closing fragment
09-08 01:09 80m -4 / - KE4EB - / - 2 Partial capture
09-08 01:06 80m -1 / - 7X5CY - / -8 4 ✓ Closing fragment
09-06 01:29 80m +2 / - VP8A - / - 7 Partial capture
09-05 16:36 80m - / - UA4FKT +4 / - 2 Partial capture
09-05 16:35 80m -2 / -15 UN7LAN -14 / - 4 ✓ Closing observed
09-04 17:24 80m -17 / - FK8GM - / - 3 Partial capture
09-03 22:08 40m +2 / - D2ACE - / +2 7 ✓ Closing fragment
09-03 17:23 80m +2 / - S21SDR - / - 6 Partial capture
09-03 16:48 80m -7 / - JA2VMU - / -15 5 ✓ Closing fragment
09-03 16:43 80m -5 / - JR4LZX - / - 3 ✓ Closing fragment
09-02 23:10 80m +4 / - OZ/KD0NDU - / - 2 Partial capture
09-02 23:09 80m -2 / - <...> - / - 2 Partial capture
09-02 22:51 80m -6 / - RI1FJL - / -11 3 Partial capture
09-01 22:27 80m +3 / -4 G6CUT +7 / -7 5 ✓ Full exchange observed
09-01 22:17 80m -1 / -6 SM7TZK +3 / -7 14 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
231215 +17 2895  RI1FJZ UR4LBG R-10 (x2)
165100  +3 2153  II8IHBC UR4LBG KN89 (x4)
163145  -6 1288  YE4FNN UR4LBG KN89 (x9)
40m 
UTC    dB Audio  Message
034430  +2 2376  DP75BAC UR4LBG KN89
024900 -16 2138  HK3W UR4LBG KN89
025915 -17 2269  HK3G UR4LBG KN89 (x3)
030130 -18 1277  UR4LBG HK3G -17
030145 -15 2266  HK3G UR4LBG R-16
025845  -5 2153  YN9ZDJ UR4LBG KN89 (x5)
030315 -19 1934  II4IANT UR4LBG KN89 (x2)
235345  -9 2765  UR4LBG N8NN -13
20m 
UTC    dB Audio  Message
112300 -17 1681  XV9T UR4LBG R-09 (x2)
120215 -15 1070  G0VFB UR4LBG KN89
120230  -1 1072  UR4LBG G0VFB -06
120245 -18 1070  G0VFB UR4LBG R+01
120300  -7 1072  UR4LBG G0VFB RR73
120815 -17  994  KF0YOB UR4LBG KN89 (x2)
120900 -13  995  UR4LBG KF0YOB -06 (x2)
120945 -17  994  KF0YOB UR4LBG R-12
121030 -13  995  UR4LBG KF0YOB RR73
121115 -12  994  KF0YOB UR4LBG -06
050830  -3 2433  UR4LBG R8QA -01 (x2)
10m 
UTC    dB Audio  Message
072745 -18 1226  VK6AAX UR4LBG R-09
072845 -13 1224  DG0NE UR4LBG -15
061415 -21 1759  UR4LBG EX8BT -12 (x2)
064230 -12 1955  VK4CZ UR4LBG KN89 (x2)
074415 -11 1182  UR4LBG IZ3NVR -15 (x2)

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.

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