OK1OPT — 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 OK1OPT, decoded by SO8OO in southeastern Poland. 191 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-05.

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 191 FT8 messages attributed to OK1OPT as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was +4 dB; no usual signal pattern is inferred.

Overview

191
Messages attributed
1
UTC dates decoded
12
Active 15-min windows
+4 dB
Estimated median S/N

Bands

40m · 191
First attributed message: 2026-09-05
Last attributed message: 2026-09-05 22:25 UTC

Observed FT8 message patterns

Attributed sample
191 messages
Active dates
1 UTC dates
Estimated median S/N
+4 dB
Estimated 10th-90th percentile
-3 to +10 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) 184.

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:

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 · 106 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
634 km (approx.)
Last such locator decoded
2026-09-05 22:25 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
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
09-05 20:32 40m +8 / -7 R3YCJ 0 / -13 5 ✓ Full exchange observed
09-05 20:28 40m +11 / - JH5LCN - / -13 4 ✓ Closing fragment
09-05 20:22 40m - / -11 4X1UF -10 / - 2 ✓ Closing fragment
09-05 20:19 40m +5 / - DD7IW - / -23 3 Partial capture
09-05 20:16 40m +5 / - DJ3WF - / -5 3 ✓ Closing fragment
09-05 20:15 40m +2 / - OZ8MW - / +5 2 ✓ Closing fragment
09-05 20:11 40m +9 / - OE8PIT +6 / -1 4 ✓ Closing observed
09-05 20:11 40m +3 / -7 SH7MEM -10 / 0 6 ✓ Full exchange observed
09-05 20:08 40m +8 / - SQ9SET - / - 6 Partial capture
09-05 20:03 40m +2 / -15 UX7QG -12 / -19 4 ✓ Full exchange observed
09-05 20:01 40m +1 / -1 LY4Q -12 / -4 4 ✓ Full exchange observed
09-05 19:58 40m +4 / - DL3MIB +9 / +2 5 ✓ Closing observed
09-05 19:57 40m +4 / - F6FHZ - / -8 2 ✓ Closing fragment
09-05 19:54 40m +2 / -5 IU2HUQ -4 / 0 4 ✓ Full exchange observed
09-05 19:50 40m +8 / - SQ9SET - / - 8 Partial capture
09-05 19:48 40m +3 / -1 LZ2VQ 0 / +1 5 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
222415 -17 1028  CQ OK1OPT JN69                        a1 (x2)
222800  +1 2435  OK1OPT ON1BH -01
222930  -4 1187  OK1OPT OZ2NYB/P JO55 (x5)
223700 -16 1026  OK1OPT PA7FB JO22 (x6)
225530  +5  728  OK1OPT LA9H JO59

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