OH3OJ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving OH3OJ, decoded by SO8OO in southeastern Poland. 3,865 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 67 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 3,865 FT8 messages attributed to OH3OJ as the transmitting token by decoded message structure across 67 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (46%), followed by 10 m (26%) and 40 m (24%). The busiest six-hour window was 06:00-12:00 UTC, containing 46% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.
Overview
Bands
Last attributed message: 2026-09-07 16:22 UTC
Observed FT8 message patterns
- Attributed sample
- 3,865 messages
- Active dates
- 67 UTC dates
- Estimated median S/N
- -8 dB
- Estimated 10th-90th percentile
- -16 to +5 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 479, moderate (-15 to -9 dB) 1,311, strong (≥ -8 dB) 2,075.
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 OH3OJ 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 OH3OJ
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
- KP20 · 1,111 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,192 km (approx.)
- Last such locator decoded
- 2026-09-07 16:22 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 UTC | Band | OH3OJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-07 16:20 | 40m | -13 / +2 | SP5ITO | +1 / -2 | 3 | ✓ Full exchange observed |
| 09-07 16:17 | 40m | -10 / -7 | YO5BRE | -8 / -1 | 4 | ✓ Full exchange observed |
| 09-07 16:15 | 40m | -8 / -16 | IU2VUD | -2 / -16 | 8 | ✓ Full exchange observed |
| 09-07 16:12 | 40m | -9 / +9 | PD1RGW | -7 / -8 | 5 | ✓ Full exchange observed |
| 09-07 16:09 | 40m | -12 / -6 | DK5EI | -6 / -6 | 4 | ✓ Full exchange observed |
| 09-07 16:05 | 40m | -10 / -10 | DG7RAF | +3 / - | 2 | ✓ Closing observed |
| 09-07 16:01 | 40m | -10 / -12 | G1CSO | -18 / -13 | 4 | ✓ Full exchange observed |
| 09-07 07:06 | 40m | - / -21 | 9A7PCR | -12 / - | 3 | Partial capture |
| 09-07 06:51 | 40m | -13 / -11 | LB2WD | -4 / - | 4 | ✓ Closing observed |
| 09-07 06:47 | 40m | -12 / -10 | F4FQY | -9 / -9 | 4 | ✓ Full exchange observed |
| 09-07 06:35 | 40m | - / - | DK6WH | +6 / - | 4 | Partial capture |
| 09-07 06:35 | 40m | -10 / - | IK1NTB | - / -21 | 2 | ✓ Closing fragment |
| 09-07 06:33 | 40m | -8 / - | SP2SGK | - / -11 | 2 | Partial capture |
| 09-07 06:31 | 40m | -8 / - | F5PJG | - / -15 | 2 | Partial capture |
| 09-07 06:29 | 40m | -10 / - | G4FPS | - / -9 | 2 | Partial capture |
| 09-07 06:26 | 40m | -14 / - | F5PJG | - / -16 | 2 | Partial capture |
| 09-07 06:22 | 40m | -14 / -8 | RK3YWA | -22 / -11 | 3 | ✓ Full exchange observed |
| 09-07 06:21 | 40m | -13 / -6 | IK2ZJR | -3 / -8 | 5 | ✓ Full exchange observed |
| 09-07 06:17 | 40m | - / -11 | OH3CD | -14 / - | 2 | ✓ Closing fragment |
| 09-07 06:12 | 40m | -10 / - | EA5N | - / -11 | 2 | Partial capture |
| 09-07 06:10 | 40m | -11 / - | K1JAK | - / -11 | 3 | ✓ Closing fragment |
| 09-07 06:09 | 40m | -11 / - | RX9WM | - / -12 | 2 | ✓ Closing fragment |
| 09-07 06:05 | 40m | -14 / - | SP7FFY | - / -3 | 2 | ✓ Closing fragment |
| 09-07 06:03 | 40m | -13 / - | DJ9KM | - / -8 | 2 | Partial capture |
| 09-07 05:59 | 40m | -12 / 0 | SP100PKP | 0 / -14 | 3 | Partial capture |
| 09-07 05:56 | 40m | -11 / - | EI4KF | - / -4 | 2 | Partial capture |
| 09-07 05:45 | 40m | - / -14 | RV3X | -5 / - | 3 | ✓ Closing fragment |
| 09-07 05:35 | 40m | -11 / -10 | RA4FEA | -4 / -8 | 3 | ✓ Full exchange observed |
| 09-07 05:05 | 40m | -4 / 0 | PD9DX | 0 / -2 | 3 | ✓ Full exchange observed |
| 09-07 04:55 | 40m | -14 / - | HF100PKP | - / -6 | 2 | Partial capture |
| 09-06 18:09 | 80m | -1 / - | RX1AB | - / -6 | 2 | Partial capture |
| 09-06 18:07 | 80m | 0 / - | DO2DH | - / -12 | 2 | ✓ Closing fragment |
| 09-06 18:07 | 80m | -5 / -1 | R3EDI | +1 / -5 | 5 | ✓ Full exchange observed |
| 09-06 18:05 | 80m | 0 / -12 | YO7CWP | +4 / -6 | 4 | ✓ Full exchange observed |
| 09-06 18:04 | 80m | - / -13 | RK3ZB | +8 / - | 2 | ✓ Closing fragment |
| 09-06 17:25 | 40m | -5 / -4 | OE9IHR | -7 / - | 3 | ✓ Closing observed |
| 09-06 17:23 | 40m | -10 / - | F1UNR | - / -16 | 2 | ✓ Closing fragment |
| 09-06 17:22 | 40m | -8 / - | M8FQT | - / -9 | 2 | ✓ Closing fragment |
| 09-06 17:21 | 40m | - / 0 | F4HHY | -2 / - | 2 | ✓ Closing fragment |
| 09-06 17:18 | 40m | -9 / - | PD0PHA | - / -14 | 2 | ✓ Closing fragment |
| 09-06 17:17 | 40m | -12 / - | R4NAN | -8 / -1 | 3 | ✓ Closing observed |
| 09-06 17:16 | 40m | -10 / - | UA3XDR | - / -15 | 2 | ✓ Closing fragment |
| 09-06 17:15 | 40m | -5 / -6 | IK2BUF | -2 / - | 3 | ✓ Closing observed |
| 09-06 17:14 | 40m | -9 / - | IU7VOL | - / -13 | 2 | ✓ Closing fragment |
| 09-06 17:10 | 40m | -5 / -18 | EA5PG | -5 / -11 | 4 | ✓ Full exchange observed |
| 09-06 17:10 | 40m | -9 / - | SP8AMJ | -8 / - | 2 | ✓ Closing observed |
| 09-06 17:08 | 40m | -6 / - | ON4FHM | -15 / -11 | 3 | ✓ Closing observed |
| 09-06 17:06 | 40m | -6 / 0 | OE6GBG | +10 / -3 | 4 | ✓ Full exchange observed |
| 09-06 17:06 | 40m | -8 / 0 | R3ZBY | +4 / -10 | 4 | ✓ Full exchange observed |
| 09-06 17:05 | 40m | -12 / -6 | DL2XAN | -14 / -10 | 4 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 161615 +0 725 OH3OJ IU2VUD 73 161630 -8 726 IU2VUD OH3OJ RR73 161700 -10 726 YO5BRE OH3OJ -01 161730 -10 725 CQ OH3OJ KP20 161745 -4 725 OH3OJ IU2VUD 73 161815 -7 1738 OH3OJ YO5BRE R-07 161815 -2 725 OH3OJ IU2VUD 73 161845 -8 1738 OH3OJ YO5BRE R-07 161845 -3 725 OH3OJ IU2VUD JN45 161845 -10 2674 OH3OJ SP4KR 73 161915 -8 1738 OH3OJ YO5BRE 73 162030 -13 726 SP5ITO OH3OJ -02 162045 +2 2142 OH3OJ SP5ITO R+02 (x2) 162200 -12 725 CQ OH3OJ KP20 a1
UTC dB Audio Message 180715 +1 407 CQ OH3OJ KP20 180730 +1 2160 OH3OJ R3EDI KO82 180745 +4 407 DO2DH OH3OJ -12 (x2) 180845 -6 407 R3EDI OH3OJ -05 180900 +3 2159 OH3OJ R3EDI R-01 180915 -4 407 R3EDI OH3OJ RR73 180930 -2 2158 OH3OJ R3EDI 73 180945 +1 407 RX1AB OH3OJ -06 (x2) 181045 -2 407 CQ OH3OJ KP20 181115 -14 407 SQ2WKJ OH3OJ -02 181245 -1 407 LA4VUA OH3OJ RR73 181315 -5 407 OK1XQ OH3OJ -03 181345 -3 407 RK3YWA OH3OJ -13
UTC dB Audio Message 164500 -6 2728 DL2IAN OH3OJ -06 (x2) 164600 -3 2729 CQ OH3OJ KP20 (x2) 164700 +0 2728 MI5ERE OH3OJ -04 164730 -2 2728 CQ OH3OJ KP20 (x2) 164830 -2 2728 ER3UA OH3OJ -13 (x2) 164930 -10 2728 CQ OH3OJ KP20 165030 -7 2728 IK1EZX OH3OJ -13 165100 +1 2728 KD0JYV OH3OJ -17 (x3) 165300 +2 2728 OK1AUG OH3OJ -10
UTC dB Audio Message 111030 -20 1738 OH3OJ PE9JAN 73 111330 -10 786 OH3OJ PD4FLD R-02 (x2) 111930 -3 785 OH3OJ M8FQT IO93 (x4) 113500 -9 2139 OH3OJ 9A7Y 73 120445 -7 713 OH3OJ DL4MBY R-08 121315 -20 1490 OH3OJ DL2UR R-10 (x2) 121815 -4 491 OH3OJ IK4LZH JN54 124415 -7 2128 OH3OJ DL6TK R-02 (x2) 135530 +6 1234 OH3OJ LZ1EV RR73
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.
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