F4EOC — 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: France Most frequent locator attributed to this token: JN39

Receiver-side FT8 activity involving F4EOC, decoded by SO8OO in southeastern Poland. 1,430 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 27 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-19.

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 1,430 FT8 messages attributed to F4EOC as the transmitting token by decoded message structure across 27 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (61%), followed by 10 m (27%) and 40 m (12%). The busiest six-hour window was 15:00-21:00 UTC, containing 37% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

1,430
Messages attributed
27
UTC dates decoded
151
Active 15-min windows
-15 dB
Estimated median S/N

Bands

40m · 174 20m · 868 10m · 388
First attributed message: 2026-06-07
Last attributed message: 2026-09-19 18:39 UTC

Observed FT8 message patterns

Attributed sample
1,430 messages
Active dates
27 UTC dates
Estimated median S/N
-15 dB
Estimated 10th-90th percentile
-22 to -4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 662, moderate (-15 to -9 dB) 513, strong (≥ -8 dB) 255.

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 F4EOC 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 F4EOC

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
JN39 · 1,091 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,063 km (approx.)
Last such locator decoded
2026-09-19 18:39 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 UTCBandF4EOC S/NCounterpartCounterpart S/NMsgsCapture
09-19 18:41 40m - / -3 9A1CCB +8 / - 2 Partial capture
09-19 18:38 40m -2 / - G4FJV - / -9 2 ✓ Closing fragment
09-19 18:37 40m -4 / - 9H4JX -19 / -3 2 ✓ Closing observed
09-19 18:35 40m 0 / - EH5FVP - / -6 2 Partial capture
09-19 06:13 40m -4 / - KT3S - / - 8 Partial capture
09-19 06:10 40m -2 / - OK2SIR/QRP - / - 6 Partial capture
09-19 06:06 40m -2 / - KE9END - / -20 4 ✓ Closing fragment
09-19 06:02 40m -3 / - KS1WK - / -19 6 ✓ Closing fragment
09-19 05:59 40m -4 / - KX2B - / - 5 Partial capture
09-19 05:56 40m -2 / - KJ5PTH - / -12 3 ✓ Closing fragment
09-19 05:53 40m -1 / - KE9END - / - 6 Partial capture
09-19 05:52 40m 0 / - KJ5PTH - / - 2 Partial capture
09-19 05:49 40m -1 / - K3JX - / - 5 Partial capture
09-19 05:46 40m -1 / - KS1WK - / - 6 Partial capture
09-19 05:40 40m -2 / - HP2DFA - / -17 10 Partial capture
09-19 05:38 40m -5 / - MI7RDK - / -1 3 ✓ Closing fragment
09-19 05:36 40m - / - YO3GNF -13 / - 2 Partial capture
09-19 05:30 40m -4 / - HK3W - / 0 7 ✓ Closing fragment
09-19 05:28 40m -2 / - WP4TUN - / -7 5 ✓ Closing fragment
09-19 05:19 40m -4 / - KE9END - / - 4 Partial capture
09-19 05:14 40m -6 / - KS1WK - / - 5 Partial capture
09-19 05:10 40m -4 / - EA8BS - / -3 6 ✓ Closing fragment
09-19 05:09 40m -8 / - HK3YL - / - 2 Partial capture
09-19 05:07 40m -10 / - IU6QTH - / - 4 Partial capture
09-19 05:05 40m -10 / - WB3JSZ - / -10 3 ✓ Closing fragment
09-19 04:59 40m -3 / - OA4ENG - / -9 5 ✓ Closing fragment
09-18 11:29 40m -18 / - M9ORB - / - 3 Partial capture
09-18 11:25 40m -20 / - OK2SIR/QRP - / - 2 Partial capture
08-30 09:25 20m -10 / - VK2ZR - / - 2 Partial capture
08-17 17:43 20m -17 / - S59SV - / - 3 Partial capture
08-17 17:39 20m -18 / - M8IRI - / +4 7 Partial capture
08-17 17:34 20m -15 / - <...> - / - 7 Partial capture
08-17 17:14 20m -10 / - DL3FH - / - 4 Partial capture
08-17 17:12 20m -12 / - M7NNB - / -3 3 ✓ Closing fragment
08-17 17:08 20m -12 / - DK1AJ - / - 7 Partial capture
08-17 17:05 20m -13 / - DL3FH - / - 7 Partial capture
08-17 17:03 20m -15 / - MM0TBH - / -9 3 ✓ Closing fragment
08-17 17:01 20m -15 / - BH3WBQ - / - 2 Partial capture
08-17 16:46 40m -19 / - M8FQT - / 0 4 Partial capture
08-12 19:46 10m -6 / - LA3YNA - / - 5 Partial capture
08-12 19:43 10m -3 / - HG1DRC - / - 5 ✓ Closing fragment
08-08 18:08 20m - / -4 F4MUD -6 / - 6 Partial capture
08-08 17:48 10m -14 / - SP2MS - / - 3 Partial capture
08-08 17:47 10m -12 / - EA2JE - / +2 3 ✓ Closing fragment
08-08 17:44 10m -21 / - EA7DRA - / - 4 Partial capture
08-08 17:41 10m -20 / - TM8H - / - 5 Partial capture
08-08 17:39 10m -17 / - EG5ECL - / +4 5 ✓ Closing fragment
08-08 17:36 10m -17 / - TM8H - / - 5 Partial capture
08-08 17:34 10m -20 / - JY4CI - / - 2 Partial capture
07-31 18:25 10m -16 / - M0CKX - / +3 4 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
061515  -4 1781  KT3S F4EOC JN39 (x5)
183445  +1 1780  LA1XFA F4EOC JN39
183515  -2 1780  EH5FVP F4EOC JN39 (x2)
183745  -4 1780  9H4JX F4EOC R-03
183800 -19 1838  F4EOC 9H4JX RR73
183815  -2 1780  G4FJV F4EOC R-09 (x2)
183915  +2 1780  HB9FIL/P F4EOC JN39
184100  +8 3067  F4EOC 9A1CCB -03 (x2)
20m 
UTC    dB Audio  Message
173845 -17 1809  <...> F4EOC JN39
173915 -15 1808  M8IRI F4EOC JN39 (x7)
174345 -17 1809  S59SV F4EOC JN39 (x3)
174645 -16 1809  BA3NZ F4EOC JN39
064400  +2 1813  EB1DJ F4EOC JN39
092515 -10 1810  VK2ZR F4EOC JN39 (x2)
10m 
UTC    dB Audio  Message
174845 -12 1806  SP2MS F4EOC JN39 (x3)
115115 -21 1807  SQ5SQF F4EOC JN39
194330  -5 1809  HG1DRC F4EOC JN39 (x5)
194615  -6 1809  LA3YNA F4EOC JN39 (x5)
194845  -9 1808  HA3GX F4EOC JN39

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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