WB4OSS — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Locator transmitted in a decoded message: EM78

Receiver-side FT8 activity involving WB4OSS, decoded by SO8OO in southeastern Poland. 315 related FT8 messages, 12 CQ messages, observed on 60m, 40m, 20m, 10m, across 11 UTC dates. Heard between 2026-04-30 and 2026-07-03.

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.

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Overview

315
Related messages
12
CQ messages
11
UTC dates heard
-4 dB
Mean decoder S/N

Bands

First seen: 2026-04-30
Last seen: 2026-07-03 18:28 UTC

Activity Heatmap

Locator transmitted by WB4OSS

Approximate centre of EM78, decoded 2026-05-29 02:58 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 UTCBandWB4OSS S/NCounterpartCounterpart S/NMsgsCapture
07-03 20:26 20m - / - IW2HZE -6 / - 3 Partial capture
06-30 16:58 10m - / -12 DH1KJ +10 / - 4 ✓ Closing fragment
06-30 15:44 10m - / - UW5EQM -1 / - 2 Partial capture
06-30 15:41 10m - / - RC7C -4 / - 7 ✓ Closing fragment
06-30 15:40 10m - / -13 DN9OPA -18 / - 2 ✓ Closing fragment
06-30 15:36 10m - / -15 RA6BL +7 / - 4 ✓ Closing fragment
06-30 15:36 10m - / -7 DL6II -6 / - 5 ✓ Closing fragment
06-30 15:32 10m - / +3 CN2DX -16 / - 2 ✓ Closing fragment
06-30 15:19 10m - / -22 IN3THU +12 / - 2 Partial capture
06-30 15:06 10m - / - M7DRC -9 / - 4 Partial capture
06-30 13:16 10m - / -24 HB9CTU -17 / - 6 Partial capture
06-30 13:07 10m - / -10 ON4ASV +1 / - 3 ✓ Closing fragment
06-30 13:02 10m - / -13 7Q3WS -22 / - 2 ✓ Closing fragment
06-30 13:01 10m - / -13 SX0W -7 / - 2 ✓ Closing fragment
06-11 14:45 10m - / - OK7MA -5 / - 13 Partial capture
06-11 14:42 10m - / - OK7MA -5 / - 2 Partial capture
06-11 14:08 10m - / - DN9OPA -18 / - 4 Partial capture
06-10 19:37 10m - / - IV3DXW +10 / - 4 Partial capture
06-10 19:28 10m - / -10 OK1DXR +2 / - 12 Partial capture
06-10 19:27 10m - / - G0CLH -10 / - 2 Partial capture
06-10 19:22 10m - / - DN9OPA +9 / - 6 Partial capture
06-10 19:20 10m -9 / - K2DAR - / -12 2 ✓ Closing fragment
06-10 19:19 10m -6 / - WX9WTF - / -18 2 Partial capture
06-10 19:18 10m -4 / - DF8DR - / -13 2 Partial capture
06-10 19:17 10m -7 / - DN9JCB - / -18 2 ✓ Closing fragment
06-10 19:13 10m -9 / -4 DO6LE +15 / -16 10 ✓ Full exchange observed
06-10 19:12 10m -11 / -8 IV3IBK +6 / -16 8 ✓ Full exchange observed
06-10 19:11 10m -8 / -16 DK3TNA -15 / -9 8 ✓ Full exchange observed
06-10 19:09 10m -12 / -13 ZA5G 0 / -19 3 ✓ Full exchange observed
06-10 19:08 10m -11 / - W5JXP - / -14 2 ✓ Closing fragment
06-10 19:07 10m - / - DL2AKT +3 / - 6 Partial capture
06-10 19:05 10m - / - DO6LE +12 / - 2 Partial capture
06-10 19:04 10m - / - PD0R -9 / - 6 Partial capture
06-10 19:03 10m -6 / -8 PA4BEN -7 / -22 7 ✓ Full exchange observed
06-10 19:02 10m -10 / - W1VJM - / +2 2 ✓ Closing fragment
06-10 19:02 10m - / - RC6OG -6 / - 6 Partial capture
06-10 19:01 10m -7 / -5 IK4LZH +6 / - 4 ✓ Closing observed
06-10 19:00 10m - / -17 F1PBZ +25 / - 2 ✓ Closing fragment
06-10 18:58 10m -19 / - DO6LE +14 / -13 3 Partial capture
06-10 18:57 10m - / -20 I1YTO -4 / - 2 ✓ Closing fragment
06-10 18:55 10m -10 / - US5UC - / -18 2 Partial capture
06-10 18:54 10m -16 / - N1KSY - / -13 2 ✓ Closing fragment
06-10 18:53 10m -10 / - YL3AVN - / -13 3 ✓ Closing fragment
06-10 18:51 10m -11 / - OM3TWM - / -10 3 ✓ Closing fragment
06-10 18:47 10m - / - DN9OPA +5 / - 4 Partial capture
06-10 18:46 10m -10 / - VE2OCH - / -1 2 ✓ Closing fragment
06-09 02:04 40m - / - UA3QC -8 / - 4 Partial capture
05-29 03:01 20m - / -16 R9JX +16 / - 2 Partial capture
05-29 02:58 20m -1 / +10 SP5EXA -19 / -13 4 ✓ Full exchange observed
05-29 02:48 20m -2 / -8 UN8DSW -11 / -16 4 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

20m
UTC    dB Audio  Message
024930  -1  596  KG7ZAG WB4OSS -04
025100  -2  596  RN6MA WB4OSS R-14
025830  -3  467  CQ WB4OSS EM78
025845 -15  468  WB4OSS SP5EXA KO02
025900  -1  468  SP5EXA WB4OSS -13
025915 -24  468  WB4OSS SP5EXA R+10 (x2)
030045  -4 2330  WB4OSS RX9YM MO92
030115 +16 2821  WB4OSS R9JX MO16 (x2)
030445 -16 2331  WB4OSS RX9YM MO92
031415 -10  468  EU6MM WB4OSS -13
202645  -6  439  WB4OSS IW2HZE JN45 (x3)
10m
UTC    dB Audio  Message
154115 -17 2388  WB4OSS DN9OPA 73
154145  -2 1064  WB4OSS RC7C KN95 (x3)
154415  -1 2188  WB4OSS UW5EQM KN68
154415  +2 2469  WB4OSS RC7C KN95
154445  -1 2188  WB4OSS UW5EQM KN68
154445  -8 2470  WB4OSS RC7C KN95 (x2)
165815 +12  546  WB4OSS DH1KJ JN48 (x4)
171945 -10  424  WB4OSS YO4NF 73
172930  -4  424  WB4OSS F6GHG JN28
40m
UTC    dB Audio  Message
020445 -10  537  WB4OSS UA3QC KO91 (x4)

Decoder S/N history by band

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