WD4OBP — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FM16

Receiver-side FT8 activity involving WD4OBP, decoded by SO8OO in southeastern Poland. 1,177 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 56 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-21.

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 1,177 FT8 messages attributed to WD4OBP as the transmitting token by decoded message structure across 56 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (65%), followed by 20 m (28%) and 80 m (7%). Most decodes (89%) fell within the six-hour window 00:00-06:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.

Overview

1,177
Messages attributed
56
UTC dates decoded
213
Active 15-min windows
-16 dB
Estimated median S/N

Bands

80m · 78 40m · 769 20m · 330
First attributed message: 2026-06-07
Last attributed message: 2026-10-21 04:39 UTC

Observed FT8 message patterns

Attributed sample
1,177 messages
Active dates
56 UTC dates
Estimated median S/N
-16 dB
Estimated 10th-90th percentile
-22.6 to -10 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 656, moderate (-15 to -9 dB) 469, strong (≥ -8 dB) 52.

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 WD4OBP 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 WD4OBP

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
FM16 · 771 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,551 km (approx.)
Last such locator decoded
2026-10-04 04:56 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 UTCBandWD4OBP S/NCounterpartCounterpart S/NMsgsCapture
10-23 05:37 60m - / -10 F5NBU +14 / - 2 ✓ Closing fragment
10-23 05:18 40m - / - F6DZU +1 / - 3 Partial capture
10-23 04:40 80m - / -24 DL1MEV -11 / - 3 ✓ Closing fragment
10-23 04:34 80m - / -13 SV2DCD +8 / - 2 ✓ Closing fragment
10-23 04:24 60m - / -3 EA7R +1 / - 2 ✓ Closing fragment
10-23 03:44 60m - / -11 F4PAN +2 / - 2 ✓ Closing fragment
10-23 03:02 40m - / -24 EA2DYB -1 / - 3 ✓ Closing fragment
10-22 04:42 60m - / -16 EA5JKT -13 / - 2 ✓ Closing fragment
10-22 04:29 60m - / -11 PA4PA -4 / - 2 ✓ Closing fragment
10-21 05:11 40m - / -6 CT7BRV -6 / - 2 ✓ Closing fragment
10-21 04:59 40m - / -4 F5IND -10 / - 2 ✓ Closing fragment
10-14 03:16 60m - / -13 EA7IF -12 / - 2 ✓ Closing fragment
10-14 02:59 40m - / - M9XPN -10 / - 4 Partial capture
10-14 02:57 40m - / - G1UMV -18 / - 2 Partial capture
10-14 02:49 40m - / -24 TA3JOH -20 / - 3 Partial capture
10-14 02:48 40m - / - IT9ODQ -9 / - 3 Partial capture
10-14 02:44 40m - / -8 ON4VMA +6 / - 3 ✓ Closing fragment
10-13 05:41 60m - / -19 F5GN -14 / - 2 ✓ Closing fragment
10-13 05:39 60m - / -21 DG1FK -4 / - 2 ✓ Closing fragment
10-13 05:37 60m - / -25 G0ABI -3 / - 4 ✓ Closing fragment
10-13 05:25 60m - / -14 IK1WGX -8 / - 2 ✓ Closing fragment
10-13 05:23 60m - / -20 DF7EF +18 / - 2 ✓ Closing fragment
10-13 05:18 60m - / - F5GN -9 / - 4 Partial capture
10-13 04:39 80m - / - IK4UOF +6 / - 4 Partial capture
10-13 03:34 40m - / -8 CT2HUU -19 / - 4 ✓ Closing fragment
10-13 03:06 40m - / - EB2FBI -14 / - 6 Partial capture
10-13 01:25 40m - / -8 OD5XX +14 / - 4 Partial capture
10-12 03:27 40m - / - SV5AZK -20 / - 2 Partial capture
10-12 03:17 40m - / -21 UA6FM -5 / - 5 ✓ Closing fragment
10-12 02:19 40m - / - SV5AZK -22 / - 2 Partial capture
10-11 05:14 80m - / - DH0GSU -6 / - 3 Partial capture
10-11 05:12 80m - / -13 DO2NM -8 / - 3 ✓ Closing fragment
10-11 04:59 80m - / -5 DJ7M +2 / - 2 ✓ Closing fragment
10-11 04:56 80m - / -25 F4EGM -2 / - 3 ✓ Closing fragment
10-10 05:27 40m - / - IK5PWQ +6 / - 3 ✓ Closing fragment
10-10 04:41 40m - / +6 GJ0KYZ +2 / - 2 ✓ Closing fragment
10-10 04:23 40m - / - I6PJC -16 / - 2 ✓ Closing fragment
10-10 04:13 40m - / -8 F8VNU +4 / - 5 Partial capture
10-10 04:04 40m - / -9 IK3SSW -4 / - 4 Partial capture
10-08 05:02 60m - / -16 F4LRA -9 / - 2 ✓ Closing fragment
10-08 04:42 40m - / - IW7EGY -10 / - 5 Partial capture
10-07 04:56 40m - / -10 GJ0KYZ -5 / - 4 ✓ Closing fragment
10-07 04:54 40m - / - IU1HGN -15 / - 2 Partial capture
10-07 04:38 40m - / -15 IS0AFM 0 / - 2 ✓ Closing fragment
10-07 04:16 40m - / - TA3NK 0 / - 3 Partial capture
10-06 05:31 40m - / -25 IW7EGY -9 / - 4 ✓ Closing fragment
10-06 05:30 40m - / -15 IU1SCQ -5 / - 2 ✓ Closing fragment
10-06 05:22 40m - / - IW7EGY -16 / - 2 Partial capture
10-06 04:37 60m - / -21 EA3CUU -5 / - 4 ✓ Closing fragment
10-06 04:08 40m - / -1 EA5FD -1 / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

60m 
UTC    dB Audio  Message
054200 -14 1331  WD4OBP F5GN 73
031645 -12 1170  WD4OBP EA7IF -13 (x2)
034515 -18 2383  WD4OBP IZ8FFA -15
035315 -23 1619  WD4OBP TA5DOB KM78
042915 -11  263  WD4OBP PA4PA -11 (x2)
044230 -15 1945  WD4OBP EA5JKT -16 (x2)
034430  +6  973  WD4OBP F4PAN -11 (x2)
042430  +0  458  WD4OBP EA7R -03 (x2)
053715 +13 2702  WD4OBP F5NBU -10 (x2)
40m 
UTC    dB Audio  Message
025900  -7 1330  WD4OBP M9XPN IO91 (x4)
043930 -18 1032  DK9RC WD4OBP RRR
045945 -15 1405  WD4OBP F5IND -04 (x2)
051145  -4  755  WD4OBP CT7BRV -06 (x2)
030215  +0  296  WD4OBP EA2DYB IN83 (x3)
051845  +3  678  WD4OBP F6DZU IN94 (x3)
80m 
UTC    dB Audio  Message
051230  -7 2654  WD4OBP DO2NM -13 (x3)
051430  -4 1399  WD4OBP DH0GSU JN48 (x3)
043945  +9 2004  WD4OBP IK4UOF JN54 (x4)
043400  +6 2907  WD4OBP SV2DCD -13 (x2)
044000 -11 2357  WD4OBP DL1MEV JN58 (x3)
20m 
UTC    dB Audio  Message
233100 -18 1814  W7ODG WD4OBP FM16 (x9)
201915 -24 1475  WD4OBP IU1DXU -19
203030 -21 1282  KD7NHM WD4OBP FM16 (x2)
184545  -3 1607  WD4OBP F4JZW JN08 (x3)

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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