BD4WBT — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: China Most frequent locator attributed to this token: PM01

Receiver-side FT8 activity involving BD4WBT, decoded by SO8OO in southeastern Poland. 48 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-08-29.

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 48 FT8 messages attributed to BD4WBT as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -18 dB; no usual signal pattern is inferred.

Overview

48
Messages attributed
1
UTC dates decoded
5
Active 15-min windows
-18 dB
Estimated median S/N

Bands

First attributed message: 2026-08-29
Last attributed message: 2026-08-29 16:51 UTC

Observed FT8 message patterns

Attributed sample
48 messages
Active dates
1 UTC dates
Estimated median S/N
-18 dB
Estimated 10th-90th percentile
-22 to -13 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 36, moderate (-15 to -9 dB) 12, strong (≥ -8 dB) 0.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with BD4WBT in decoded directed-looking exchanges:

Most frequent locator attributed to BD4WBT

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
PM01 · 37 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,986 km (approx.)
Last such locator decoded
2026-08-29 16:51 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 UTCBandBD4WBT S/NCounterpartCounterpart S/NMsgsCapture
08-29 18:33 20m - / - DG9SEH -1 / - 5 Partial capture
08-29 18:23 20m - / - EA3JHT -5 / - 3 Partial capture
08-29 18:15 20m - / - F4BYA -6 / - 14 Partial capture
08-29 18:09 20m - / - DG9SEH +1 / - 2 Partial capture
08-29 18:07 20m - / - F4BYA -8 / - 11 Partial capture
08-29 18:06 20m - / - EA5D +4 / - 4 Partial capture
08-29 18:01 20m - / - DF3WI -2 / - 5 Partial capture
08-29 17:53 20m - / - DK1MCS +9 / - 3 Partial capture
08-29 17:49 20m - / - DG9SEH +1 / - 6 Partial capture
08-29 17:43 20m - / -13 DK9NP -1 / - 8 Partial capture
08-29 17:43 20m - / -18 EA3EQS +11 / - 5 ✓ Closing fragment
08-29 17:35 20m - / - EA5HM +2 / - 5 Partial capture
08-29 17:33 20m - / - F4BYA -8 / - 2 Partial capture
08-29 17:23 20m - / - F4BYA -3 / - 4 Partial capture
08-29 17:22 20m - / -21 DK9NP +5 / - 3 Partial capture
08-29 17:19 20m - / - F4BYA -4 / - 2 Partial capture
08-29 17:13 20m - / - DG7JG -10 / - 2 Partial capture
08-29 17:08 20m - / -15 DK8HC/P -6 / - 2 Partial capture
08-29 17:05 20m - / - F4BYA -10 / - 5 Partial capture
08-29 16:57 20m - / - DG9SEH -1 / - 6 Partial capture
08-29 16:47 20m - / - PD4VL -14 / - 2 Partial capture
08-29 16:22 20m -15 / - YU1JB - / -20 4 ✓ Closing fragment
08-29 16:20 20m - / - F4IBJ -4 / - 2 Partial capture
08-29 16:13 20m -16 / - BG4OOO - / -22 2 ✓ Closing fragment
08-29 16:12 20m -16 / - 9A3K - / -18 4 Partial capture
08-29 16:11 20m - / - EA3CUU +9 / - 2 Partial capture
08-29 16:08 20m -18 / - 9A3K - / - 2 Partial capture
08-29 16:04 20m -20 / - 9A3K - / - 3 Partial capture
08-29 16:02 20m - / -17 RK9S -1 / - 3 Partial capture
08-29 15:59 20m - / -7 ON6AA +6 / - 6 ✓ Closing fragment
08-29 15:48 20m - / - EA3EDU -2 / - 7 Partial capture
08-29 14:15 20m - / - M7HET -13 / - 2 Partial capture
08-29 14:13 20m - / - F1PSX -11 / - 4 Partial capture
08-29 14:05 20m - / - F1PSX -12 / - 2 Partial capture
08-29 13:59 20m - / -17 F5RRS +7 / - 8 Partial capture
08-29 13:56 20m - / - SV5BYP +2 / - 5 Partial capture
08-29 13:36 20m - / - R4HLO -14 / - 3 Partial capture
08-29 13:31 20m - / -12 RL4R +16 / - 2 Partial capture
08-28 14:58 20m - / - IW9FRA -5 / - 6 Partial capture
08-28 14:58 20m - / -24 SV1FJR -4 / - 3 Partial capture
08-28 14:47 20m - / - RA6FSV -6 / - 3 Partial capture
08-27 15:04 20m - / - R4HLO -20 / - 4 Partial capture
08-27 15:03 20m - / - OH6XB +3 / - 2 Partial capture
08-27 15:00 20m - / - OH6XB -1 / - 2 Partial capture
08-27 14:57 20m - / - OH6XB +1 / - 2 Partial capture
08-27 14:57 20m - / -3 R4IK +2 / - 2 ✓ Closing fragment
08-27 14:10 40m - / -21 UA3SCF -17 / - 2 Partial capture
08-27 09:51 10m - / - IZ0EGA -20 / - 4 Partial capture
08-27 09:48 10m - / - IZ0EGA -22 / - 2 Partial capture
08-24 12:07 20m - / -16 RU3QR -9 / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m
UTC    dB Audio  Message
181945  -8 2417  BD4WBT F4BYA JN19 (x7)
182315  -6 1509  BD4WBT EA3JHT JN01 (x3)
183345  -2 1091  BD4WBT DG9SEH JN48 (x5)
40m
UTC    dB Audio  Message
141015 -19 1887  BD4WBT UA3SCF -21 (x2)
142515  -4 2135  BD4WBT RA3OR KO90
10m
UTC    dB Audio  Message
094200 -24 2089  BD4WBT IZ0EGA JN61 (x8)

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