OK1OPT — 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: Czech Republic Most frequent locator attributed to this token: JN69

Receiver-side FT8 activity involving OK1OPT, decoded by SO8OO in southeastern Poland. 203 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-05 and 2026-10-03.

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 203 FT8 messages attributed to OK1OPT as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (94%), followed by 80 m (6%). In this small sample, the estimated median decoder S/N was +4 dB; no usual signal pattern is inferred.

Overview

203
Messages attributed
2
UTC dates decoded
13
Active 15-min windows
+4 dB
Estimated median S/N

Bands

80m · 12 40m · 191
First attributed message: 2026-09-05
Last attributed message: 2026-10-03 22:27 UTC

Observed FT8 message patterns

Attributed sample
203 messages
Active dates
2 UTC dates
Estimated median S/N
+4 dB
Estimated 10th-90th percentile
-3 to +11 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 196.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with OK1OPT 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 OK1OPT

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 · 114 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
634 km (approx.)
Last such locator decoded
2026-10-03 22:27 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 UTCBandOK1OPT S/NCounterpartCounterpart S/NMsgsCapture
10-03 22:23 80m +10 / - DO4DXA +11 / - 4 ✓ Closing observed
10-03 22:22 80m +9 / -7 DO5HB -14 / +5 8 Partial capture
10-03 22:21 80m - / - DO9BAU +5 / - 13 Partial capture
10-03 22:21 80m - / - UA4FKT +4 / - 3 Partial capture
10-03 22:20 80m +12 / - DO4TYW +1 / - 2 Partial capture
10-03 22:17 80m +8 / -2 DO4DXA +14 / - 8 ✓ Full exchange observed
10-03 22:14 40m - / - YO6LM -14 / - 2 Partial capture
10-03 20:51 40m - / - R3SN -14 / - 7 Partial capture
10-03 20:48 40m - / -17 EA1KCU 0 / - 2 ✓ Closing fragment
10-03 20:41 40m - / +1 MW0USK +4 / - 2 ✓ Closing fragment
10-03 20:24 40m - / +8 SH5RJX -11 / - 2 Partial capture
10-03 20:21 40m - / -2 SV2HTW +5 / - 2 ✓ Closing fragment
10-03 20:17 40m - / -13 TA3NK -6 / - 3 ✓ Closing fragment
10-03 20:11 40m - / -14 F4LHL +3 / - 3 ✓ Closing fragment
10-03 19:57 40m - / -13 F1PBZ -10 / - 2 Partial capture
10-03 19:53 40m - / 0 IQ0AAX -2 / - 2 Partial capture
09-05 22:37 40m - / - PA7FB -15 / - 6 Partial capture
09-05 22:29 40m - / -24 OZ2NYB/P -7 / - 5 Partial capture
09-05 22:23 40m -18 / - SH4PLD - / +2 2 ✓ Closing fragment
09-05 22:18 40m - / -8 R2GFN +5 / - 3 ✓ Closing fragment
09-05 22:13 40m - / -4 MM7FTH -11 / - 4 ✓ Closing fragment
09-05 22:02 40m - / -8 US1EA -4 / - 6 Partial capture
09-05 21:54 40m -6 / -2 OO0O -4 / - 3 ✓ Closing observed
09-05 21:53 40m - / - LA9H +2 / - 2 Partial capture
09-05 21:49 40m +8 / +5 LA5LDX/P -5 / -2 9 ✓ Full exchange observed
09-05 21:46 40m +5 / - MM7WQD - / +1 6 ✓ Closing fragment
09-05 21:44 40m +8 / -10 MI5ERE -4 / +8 4 ✓ Full exchange observed
09-05 21:43 40m +4 / - TA3NK - / +5 2 ✓ Closing fragment
09-05 21:41 40m +9 / -13 DK9MLA +7 / -10 4 ✓ Full exchange observed
09-05 21:15 40m +3 / - S56KO - / - 4 Partial capture
09-05 21:14 40m +12 / -1 MW9LQA -4 / +1 3 ✓ Full exchange observed
09-05 21:10 40m +4 / - CN8NS - / - 6 Partial capture
09-05 21:08 40m +4 / -1 EX7CQ +1 / -7 5 ✓ Full exchange observed
09-05 21:05 40m +10 / - EC5M -7 / -9 4 ✓ Closing observed
09-05 21:01 40m -1 / - TF4CU - / -5 3 ✓ Closing fragment
09-05 21:00 40m - / - PD0IFI 0 / - 2 Partial capture
09-05 20:58 40m +3 / -1 SP6FME -4 / 0 4 ✓ Full exchange observed
09-05 20:56 40m -3 / - M1DBW -9 / -7 2 ✓ Closing observed
09-05 20:55 40m +5 / -11 DL6UM +3 / -25 22 ✓ Full exchange observed
09-05 20:54 40m - / -10 DH5BM -6 / - 7 ✓ Closing fragment
09-05 20:51 40m - / - DL1UDO -5 / - 4 Partial capture
09-05 20:51 40m - / -4 YO4NF 0 / - 3 ✓ Closing fragment
09-05 20:50 40m - / - DL6UM -2 / - 2 Partial capture
09-05 20:44 40m -2 / - VK3YW - / -16 10 Partial capture
09-05 20:43 40m +4 / - UR9QQ - / -3 2 ✓ Closing fragment
09-05 20:40 40m 0 / - YL2KF - / -5 3 ✓ Closing fragment
09-05 20:40 40m 0 / -7 SP6FME +6 / -7 2 Partial capture
09-05 20:37 40m -8 / - F4ACR - / -13 3 ✓ Closing fragment
09-05 20:37 40m - / - UR9QQ -11 / - 3 Partial capture
09-05 20:33 40m +2 / - EW8DG - / - 5 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
222345 -12  889  OK1OPT DO5HB R-07
222345 +11  506  OK1OPT DO4DXA RR73
222400  +9 1118  DO4DXA OK1OPT 73
222415  +5 2302  OK1OPT DO9BAU JO62
222415  -3  889  OK1OPT DO5HB R-02
222445  +1 2302  OK1OPT DO9BAU JO62
222445 -16  890  OK1OPT DO5HB R-02
222515  +0 2302  OK1OPT DO9BAU JO62
222515 -20  890  OK1OPT DO5HB R-07
222545  +1 2302  OK1OPT DO9BAU JO62 (x3)
222700  -2 1118  M7CWF OK1OPT JN69
222715  +9 2302  OK1OPT DO9BAU JO62
223415  -7  739  OK1OPT M7CWF -03
40m 
UTC    dB Audio  Message
204100  +2  875  OK1OPT MW0USK +01 (x2)
204500  -7 2303  OK1OPT OH2GT KP20
204800  -3  431  OK1OPT EA1KCU -17 (x2)
205100 -15 1914  OK1OPT R3SN KO94 (x7)
221445 -14 2028  OK1OPT YO6LM KN25 (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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