WO4SFA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Locator transmitted in a decoded message: FM05

Receiver-side FT8 activity involving WO4SFA, decoded by SO8OO in southeastern Poland. 174 related FT8 messages, observed on 80m, 40m, 20m, across 24 UTC dates. Heard between 2026-05-23 and 2026-08-20.

These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.

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

Overview

174
Related messages
0
CQ messages
24
UTC dates heard
-9 dB
Mean decoder S/N

Bands

First seen: 2026-05-23
Last seen: 2026-08-20 22:44 UTC

Activity Heatmap

Locator transmitted by WO4SFA

Approximate centre of FM05, decoded 2026-08-21 00:08 UTC. A transmitted locator is not proof of the operator's permanent location.

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 UTCBandWO4SFA S/NCounterpartCounterpart S/NMsgsCapture
08-21 00:40 40m - / - F5NBU +12 / - 2 Partial capture
08-21 00:06 20m -12 / - II7MGBR - / - 2 Partial capture
08-21 00:05 20m -20 / - A61OK - / - 2 Partial capture
08-20 23:59 20m - / -12 7Z1BQ -12 / - 2 ✓ Closing fragment
08-20 23:47 20m -7 / - SP9FOW - / -2 3 ✓ Closing fragment
08-20 23:45 20m -9 / - 8Z1IT - / -2 3 ✓ Closing fragment
08-20 23:36 20m -12 / - 5B4ARQ - / -18 2 ✓ Closing fragment
08-20 23:24 20m - / -18 XQ1KK -8 / - 4 Partial capture
08-12 03:46 20m - / - F4JCU -22 / - 3 Partial capture
08-12 03:10 40m - / - US2UM -10 / - 2 Partial capture
08-12 02:55 80m - / - KV3R -13 / - 9 Partial capture
08-12 02:53 40m - / - YO9IAB -12 / - 2 Partial capture
08-12 02:42 40m - / - US2UM -7 / - 3 Partial capture
08-12 02:32 40m - / - SP2BRZ -8 / - 2 Partial capture
08-12 02:30 40m - / -5 OE8DDX -12 / - 2 Partial capture
08-12 02:29 80m - / - KV3R -20 / - 3 Partial capture
08-12 02:24 80m - / - OH1MLZ +19 / - 2 Partial capture
08-12 02:04 80m -21 / -5 PI4DX +6 / -10 3 ✓ Full exchange observed
08-02 15:06 20m - / - IU3QWQ -10 / - 2 Partial capture
08-02 01:32 40m - / -20 UV5EEO +2 / - 5 ✓ Closing fragment
07-31 20:06 20m - / -16 PD0WC -1 / - 2 ✓ Closing fragment
07-31 00:07 40m - / - G5TV -19 / - 10 Partial capture
07-30 23:20 40m - / - G5TV -20 / - 4 Partial capture
07-18 23:20 40m - / -12 DK7ZT -22 / - 2 Partial capture
07-18 22:59 20m - / - US5HL -5 / - 2 Partial capture
07-17 23:46 40m - / - ON3ABR -15 / - 7 Partial capture
07-17 23:43 40m - / -11 DK7ZT -17 / - 3 Partial capture
07-10 21:38 20m - / - EA7LGM 0 / - 8 Partial capture
07-10 21:31 20m - / - IU5RBX -15 / - 6 Partial capture
07-10 21:31 20m - / -6 EC5M +4 / - 2 ✓ Closing fragment
07-10 21:27 20m - / - IU5RBX -20 / - 4 Partial capture
07-09 20:53 20m - / - M0CKX -6 / - 3 Partial capture
07-09 20:49 20m - / -19 M6YJB -8 / - 3 Partial capture
07-09 20:47 20m - / - IC8TEM -12 / - 3 Partial capture
07-06 00:23 40m - / -9 DK7ZT -20 / - 2 Partial capture
07-03 00:38 20m -11 / - BG0DLA - / - 6 Partial capture
07-03 00:35 20m -7 / - 3Z0KO - / -14 2 Partial capture
07-03 00:32 20m -9 / -11 YU7AS -18 / -3 7 ✓ Full exchange observed
07-03 00:30 20m -6 / - BG0DLA - / - 4 Partial capture
07-03 00:29 20m -12 / - 9K2MP - / - 2 Partial capture
06-25 23:28 20m - / -15 4Z5PT -14 / - 3 ✓ Closing fragment
06-23 23:54 20m - / - F5PBG -4 / - 2 Partial capture
06-23 23:03 20m - / - EA3IDY -15 / - 4 Partial capture
06-18 23:20 40m - / +3 F5PBG 0 / - 3 ✓ Closing fragment
06-18 22:58 40m - / - F5PBG +3 / - 3 Partial capture
06-17 23:00 20m - / -20 IZ5UFW +2 / - 2 ✓ Closing fragment
06-17 22:58 20m - / -1 MI0FBI 0 / - 2 ✓ Closing fragment
06-12 13:23 20m - / - M6BLV +4 / - 3 Partial capture
06-10 21:28 20m - / -11 EA8UP -4 / - 2 ✓ Closing fragment
06-05 19:44 20m - / -14 EA2EED +3 / - 8 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
023145  -8 1790  WO4SFA DL1USB JO60
023215 -12 2468  WO4SFA SP2BRZ JO94 (x2)
024215 -12 2342  WO4SFA US2UM KO50 (x3)
024545 -12 1032  WO4SFA SP3HIF JO82
025245 -20 1639  WO4SFA LZ3AN KN22
025315 -12 2451  WO4SFA YO9IAB KN25 (x2)
031045  -9 2337  WO4SFA US2UM KO50 (x2)
004000 +11 1005  WO4SFA F5NBU JN28 (x2)
004400  -4 1005  WO4SFA 4Z4DX KM72
20m
UTC    dB Audio  Message
233815 -12  763  VE1WT WO4SFA FM05
234530 -10  547  8Z1IT WO4SFA FM05 (x3)
234700  -6  406  SP9FOW WO4SFA FM05 (x3)
235100 -14  278  KJ5CYH WO4SFA FM05
235945 -10 1241  WO4SFA 7Z1BQ -12 (x2)
000530 -19 1121  A61OK WO4SFA FM05 (x2)
000630 -13  840  II7MGBR WO4SFA FM05 (x2)
000800 -14  278  KJ5CYH WO4SFA FM05
80m
UTC    dB Audio  Message
021730 -23 1061  KV3R WO4SFA FM05
022400 +20 2558  WO4SFA OH1MLZ KP23 (x2)
022900 -19 1062  WO4SFA KV3R FM08 (x12)

Decoder S/N history by band

Daily averages across messages associated with this profile as decoded at SO8OO.