UB2FDL — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Kaliningrad Most frequent locator attributed to this token: JO94

Receiver-side FT8 activity involving UB2FDL, decoded by SO8OO in southeastern Poland. 333 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 11 UTC dates in the available aggregate history. Observed between 2026-07-07 and 2026-09-12.

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 333 FT8 messages attributed to UB2FDL as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (43%), followed by 80 m (36%) and 20 m (21%). Most decodes (96%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (70%); the estimated median was -4.1 dB.

Overview

333
Messages attributed
11
UTC dates decoded
35
Active 15-min windows
-4.1 dB
Estimated median S/N

Bands

80m · 121 40m · 142 20m · 70
First attributed message: 2026-07-07
Last attributed message: 2026-09-12 18:59 UTC

Observed FT8 message patterns

Attributed sample
333 messages
Active dates
11 UTC dates
Estimated median S/N
-4.1 dB
Estimated 10th-90th percentile
-17 to +4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 48, moderate (-15 to -9 dB) 52, strong (≥ -8 dB) 233.

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 UB2FDL 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 UB2FDL

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
JO94 · 134 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
542 km (approx.)
Last such locator decoded
2026-09-12 18:59 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 UTCBandUB2FDL S/NCounterpartCounterpart S/NMsgsCapture
09-12 18:59 80m - / - IK6GPZ 0 / - 2 Partial capture
09-12 18:59 80m - / - OH1ZE -1 / - 9 Partial capture
09-12 18:53 80m -7 / +4 R2FEA +1 / +5 3 ✓ Full exchange observed
09-12 18:52 80m -6 / - SQ2JDM - / -2 2 ✓ Closing fragment
09-12 18:52 80m - / - OH1ZE 0 / - 2 Partial capture
09-12 18:51 80m -8 / +1 OK1UOZ +15 / -14 11 ✓ Full exchange observed
09-12 18:47 80m +2 / - RA2FU - / -3 3 ✓ Closing fragment
09-12 18:45 80m -3 / -3 IV3GVS +4 / -12 6 ✓ Full exchange observed
09-12 18:43 80m - / -16 RU3DNN +9 / - 5 ✓ Closing fragment
09-12 18:39 80m - / - SV2AEL -2 / - 2 Partial capture
09-12 18:39 80m - / -12 DL0RDG -2 / - 2 ✓ Closing fragment
09-12 18:39 80m -2 / -2 DO1MDO -4 / -12 7 ✓ Full exchange observed
09-10 18:43 40m - / +2 DH0GBC +3 / - 3 ✓ Closing fragment
09-10 18:42 40m - / - PC2J +2 / - 2 Partial capture
09-10 18:32 40m - / -15 RX3ASQ -15 / - 2 Partial capture
09-10 18:26 40m - / -12 DL8TV +4 / - 3 ✓ Closing fragment
09-10 18:26 40m - / - RX3ASQ -12 / - 2 Partial capture
09-10 18:26 40m - / - S51PV -14 / - 4 Partial capture
09-10 16:07 40m - / -9 R7OF -2 / - 2 Partial capture
09-10 16:07 40m - / -9 RU4SS -1 / - 5 ✓ Closing fragment
09-10 16:01 40m - / - RZ3DZ -18 / - 2 Partial capture
09-10 16:01 40m - / -13 RZ6L -1 / - 5 ✓ Closing fragment
09-10 15:59 40m - / - UB6LWX -12 / - 3 Partial capture
09-10 15:59 40m - / - S51PV -12 / - 7 Partial capture
09-10 15:58 80m - / - R6DVS +6 / - 3 Partial capture
09-10 15:57 40m - / -14 RA9CMO 0 / - 7 ✓ Closing fragment
09-09 19:10 40m -7 / -9 SQ6JFJ 0 / -2 6 ✓ Full exchange observed
09-09 19:06 40m -7 / - PD0DNA - / -17 3 Partial capture
09-09 19:04 40m -8 / +4 DF7NO -7 / -6 5 ✓ Full exchange observed
09-09 19:00 40m -10 / - EG42SDC - / -12 2 Partial capture
09-09 18:59 40m - / -13 9A60CBM -8 / - 4 Partial capture
09-09 18:59 40m -8 / -16 R3YAU +7 / -14 4 ✓ Full exchange observed
09-09 18:58 40m -7 / - SP5CTY - / +1 2 ✓ Closing fragment
09-09 18:54 40m -8 / -3 UB3ANV -8 / -20 12 Partial capture
09-09 18:52 40m - / - DF9AV/P -12 / - 2 Partial capture
09-09 18:52 40m - / +3 DH0GBC 0 / - 2 Partial capture
09-09 18:52 40m - / -10 RL3FA +1 / - 5 ✓ Closing fragment
09-09 18:47 40m -6 / -13 RK3DSW -14 / - 6 ✓ Closing observed
09-09 18:47 40m - / - OE9GWV -7 / - 2 Partial capture
09-09 18:44 40m -6 / -20 IV3KQE -8 / -15 6 ✓ Full exchange observed
09-09 18:42 40m - / -10 PA3BRB +2 / - 4 Partial capture
09-09 18:42 40m -4 / +8 PD0GTO -6 / -3 8 ✓ Full exchange observed
09-09 18:42 40m - / 0 YL2TM -7 / - 2 Partial capture
09-09 18:40 40m - / +1 R6ML -1 / - 3 ✓ Closing fragment
09-09 18:38 40m - / -17 SP2POL -3 / - 2 ✓ Closing fragment
09-09 18:36 40m - / +2 DG1BTN -8 / - 2 ✓ Closing fragment
09-09 18:34 40m -5 / -2 RA6OY +12 / - 3 ✓ Closing observed
09-09 18:28 40m - / -10 R5FQ -4 / - 2 ✓ Closing fragment
09-09 18:26 40m - / - RA6OY +2 / - 9 Partial capture
09-09 18:23 40m - / -17 F1PBZ -2 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
185800  +7 1333  UB2FDL R2FEA RR73
185800 -10 1450  UB2FDL M8FQT IO93
185845  -3 1451  CQ UB2FDL JO94
185900  -1 2772  UB2FDL OH1ZE KP10
185915  +2 1451  CQ UB2FDL JO94
185930  +0 2771  UB2FDL OH1ZE KP10
185930  +0 1592  UB2FDL IK6GPZ JN62
190000  -4 2771  UB2FDL OH1ZE KP10
190000  -1 1592  UB2FDL IK6GPZ JN62
190030  -3 2771  UB2FDL OH1ZE KP10 (x6)
40m 
UTC    dB Audio  Message
182800 -15 2191  UB2FDL S51PV JN76 (x2)
183230 -14 1257  UB2FDL RX3ASQ KO95
183230  -1  814  UB2FDL RN7T LN05
183300 -13 1681  UB2FDL SV9AUP KM25
183300 -16 1257  UB2FDL RX3ASQ R-15
183300 -16 1571  UB2FDL R4PFY -14
183700 -17 1257  UB2FDL RX3ASQ 73
183700  -6 1315  UB2FDL OE7LVI JN57
184200  +2 1474  UB2FDL PC2J JO22
184230  +1 1475  UB2FDL DD2MON JO41
184300  +3 1474  UB2FDL PC2J JO22
184300  +4 1435  UB2FDL DH0GBC +02 (x3)
20m 
UTC    dB Audio  Message
142045 -10 2401  UB2FDL R2BDR -08 (x2)
142115 -19 1781  UB2FDL M6AYW IO93 (x5)
144545 -11 2162  UB2FDL M9KER -16 (x2)
145115 -17 1276  UB2FDL RY2B -15
150945 -15 1488  UB2FDL EX8ABQ MN72
151845 -14  988  UB2FDL MW7KFZ IO81 (x2)
154245  -8  489  UB2FDL EI6JMB IO63 (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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