OK4RQ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Czech Republic Most frequent locator attributed to this token: JN69

Receiver-side FT8 activity involving OK4RQ, decoded by SO8OO in southeastern Poland. 1,341 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 63 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-07.

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 1,341 FT8 messages attributed to OK4RQ as the transmitting token by decoded message structure across 63 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (52%), followed by 80 m (22%) and 20 m (20%). Most decodes (65%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (70%); the estimated median was -3 dB.

Overview

1,341
Messages attributed
63
UTC dates decoded
257
Active 15-min windows
-3 dB
Estimated median S/N

Bands

First attributed message: 2026-06-06
Last attributed message: 2026-09-07 18:29 UTC

Observed FT8 message patterns

Attributed sample
1,341 messages
Active dates
63 UTC dates
Estimated median S/N
-3 dB
Estimated 10th-90th percentile
-15 to +5.6 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 111, moderate (-15 to -9 dB) 294, strong (≥ -8 dB) 936.

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.

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 OK4RQ

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
JN69 · 880 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
634 km (approx.)
Last such locator decoded
2026-09-07 18:28 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 UTCBandOK4RQ S/NCounterpartCounterpart S/NMsgsCapture
09-07 18:28 40m -2 / - 3Z100PKP - / -2 2 Partial capture
09-06 20:01 80m - / -14 R9CS/P -5 / - 3 Partial capture
09-06 20:01 80m -2 / - Z335MK - / - 3 Partial capture
09-06 19:59 80m -2 / - SN40KZE - / -13 4 Partial capture
09-06 19:48 80m +2 / - SP100PKP - / -12 6 Partial capture
09-06 19:45 80m - / -14 LZ936BA 0 / - 6 Partial capture
09-06 19:44 80m -11 / - SN100PKP - / - 3 Partial capture
09-06 15:10 40m -3 / - R4HLO/P - / - 5 Partial capture
09-06 13:57 40m -2 / - LA2W/P - / -10 3 Partial capture
09-06 13:55 40m -1 / -19 HF100PKP -11 / -10 8 Partial capture
09-06 08:30 40m -5 / - SQ100PKP - / 0 4 Partial capture
09-06 06:50 80m -16 / - F1LPT/P - / +1 2 Partial capture
09-05 19:01 80m -2 / - RV3SBS/P - / - 7 Partial capture
09-05 18:28 40m - / - DL6KIX +3 / - 3 Partial capture
09-05 18:26 40m -4 / - SO100PKP - / - 2 Partial capture
09-05 18:21 80m 0 / - SN100PKP - / - 2 Partial capture
09-05 18:19 80m +1 / - R1943OD - / - 3 Partial capture
09-05 18:15 40m +6 / -12 T77NC -1 / -7 5 ✓ Full exchange observed
09-05 17:10 40m -1 / -7 SO100PKP -10 / - 4 Partial capture
09-05 15:16 40m -1 / -7 5P2F/P -15 / +3 8 ✓ Full exchange observed
09-05 09:18 40m -4 / - HF100PKP - / -19 2 Partial capture
09-05 08:37 40m -1 / - OM1DLC/P - / -13 3 Partial capture
09-05 06:31 40m -3 / - SN100PKP - / +2 3 Partial capture
09-05 06:06 40m +1 / - SP100PKP - / -10 4 Partial capture
09-05 06:02 40m +1 / - SO100PKP - / +3 4 Partial capture
09-04 21:03 60m -10 / - <...> - / +2 3 Partial capture
09-04 19:05 80m +7 / - <...> - / - 8 Partial capture
09-04 18:57 80m - / +2 3Z100PKP -2 / - 2 Partial capture
09-04 18:51 80m +11 / - 3Z100PKP - / - 3 Partial capture
09-04 18:50 80m +7 / - OH2NNE/4 - / - 2 Partial capture
09-04 18:33 80m +7 / -1 HF100PKP -1 / -9 5 Partial capture
09-04 18:32 80m +6 / - <...> - / - 2 Partial capture
09-04 18:28 80m +7 / - <...> - / - 2 Partial capture
09-04 17:44 40m +1 / - EG3PDA -14 / -8 4 ✓ Closing observed
09-04 17:27 40m -1 / -15 AM42SDC -10 / -10 3 Partial capture
09-04 03:17 80m +10 / - SQ100PKP - / - 3 Partial capture
09-03 19:26 40m +5 / - <...> - / -6 8 Partial capture
09-03 18:33 40m +4 / - ON/PA0EWB - / +2 2 Partial capture
09-03 18:08 80m +6 / - <...> - / +3 2 Partial capture
09-03 16:19 40m +4 / - <...> - / -11 3 Partial capture
09-03 03:22 80m +7 / - R9CS/P - / +3 2 Partial capture
09-02 19:20 80m -2 / -8 5P1KZX -8 / - 3 Partial capture
09-02 18:22 40m -1 / - RI1FJL - / - 3 Partial capture
09-02 17:42 40m - / - DM3PT -1 / - 2 Partial capture
09-02 17:39 40m +2 / - LZ123RF - / +6 4 Partial capture
09-02 17:16 40m - / -4 3Z100PKP -12 / - 4 Partial capture
09-02 17:16 40m +4 / - <...> - / - 2 Partial capture
09-02 16:55 40m +3 / - II7MGBR - / - 5 Partial capture
09-02 03:21 40m -17 / - 3Z100PKP - / -10 3 Partial capture
09-02 03:17 80m +10 / - <...> - / +8 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
135745  +1 1399  LA2W/P OK4RQ R-10 (x3)
135915  -1 1397  <HF100PKP> OK4RQ JN69
135930  -8 1547  OK4RQ HF100PKP -19
135945  +2 1396  HF100PKP OK4RQ R-07
140000 -17 1547  OK4RQ RR73; DL1NEO <...> -06
151015  -1 1717  R4HLO/P OK4RQ JN69 (x5)
182845  -4 1523  3Z100PKP OK4RQ JN69
182930  -1 1488  OK4RQ SN31ROT -13
182945  -1 1522  3Z100PKP OK4RQ R-02
80m
UTC    dB Audio  Message
194930  +3  743  SP100PKP OK4RQ JN69 (x4)
195130  +2  414  LZ936BA OK4RQ JN69
195900  -3 1194  SN40KZE OK4RQ JN69 (x3)
200100  -4 1194  <Z335MK> OK4RQ JN69
200115  -9  436  OK4RQ R9CS/P -14
200130  +0 1194  <Z335MK> OK4RQ JN69
200145  -2  436  OK4RQ R9CS/P -15
200200  -1 1194  <Z335MK> OK4RQ JN69
200215  -4  436  OK4RQ R9CS/P -13
200230  -4 1194  SN40KZE OK4RQ R-13
60m
UTC    dB Audio  Message
184545  -6 1268  <...> OK4RQ JN69 (x2)
192815  -6 1694  EG1PDA OK4RQ JN69 (x5)
193045  -7 1694  ER3UA OK4RQ JN69
193100  +1 2135  OK4RQ ER3UA -07
193115  -8 1694  ER3UA OK4RQ R-10
193130  -2 2135  OK4RQ ER3UA RR73
193145 -11 1695  ER3UA OK4RQ 73
210330  -8 1457  <...> OK4RQ JN69 (x3)
20m
UTC    dB Audio  Message
084245 -19 1923  <...> OK4RQ JN69
084830 -15 2221  OK4RQ II7MGBR +03
132745 +12 1209  <...> OK4RQ JN69 (x8)
135945  +6 2101  II7MGXX OK4RQ JN69
144330 -16 2152  OK4RQ MM7FTH +07 (x4)
10m
UTC    dB Audio  Message
071815 -17 1272  OK4RQ LZ1ZF +10 (x2)
080830 -14 1029  OK4RQ EN35UKR -10
071700 -14 1195  OK4RQ DN9DSP +01 (x2)
071900 -15 1796  OK4RQ PA3EVY RR73
072600 -19 2092  OK4RQ DN9JGL RR73
072630 -16 2377  OK4RQ DN9CHV JO31 (x3)
075500 -15 1235  OK4RQ DH7ZP R-14 (x2)
082930  -1 1252  OK4RQ II7MGXX +18
083000  -3 1252  OK4RQ RR73; IU3WNP <...> -08
101900 -18 1285  <...> OK4RQ R-05

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.

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