OH3JR — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving OH3JR, decoded by SO8OO in southeastern Poland. 221 FT8 messages attributed to this token as transmitter, on 160m, 80m, across 8 UTC dates in the available aggregate history. Observed between 2026-08-26 and 2026-09-20.
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 221 FT8 messages attributed to OH3JR as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (83%), followed by 160 m (17%). Most decodes (100%) 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 (67%); the estimated median was -5 dB.
Overview
Bands
Last attributed message: 2026-09-20 17:51 UTC
Observed FT8 message patterns
- Attributed sample
- 221 messages
- Active dates
- 8 UTC dates
- Estimated median S/N
- -5 dB
- Estimated 10th-90th percentile
- -14 to +7 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 57, strong (≥ -8 dB) 147.
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 OH3JR 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 OH3JR
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
- KP21 · 172 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,301 km (approx.)
- Last such locator decoded
- 2026-09-20 17:50 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 | OH3JR S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-20 17:49 | 160m | -4 / - | RI1FJZ | - / -6 | 5 | ✓ Closing fragment |
| 09-20 16:59 | 160m | -11 / - | RI1FJZ | - / - | 6 | Partial capture |
| 09-20 16:54 | 160m | -21 / - | RI1FJZ | - / - | 2 | Partial capture |
| 09-19 16:49 | 80m | +6 / - | RI1FJZ | - / - | 33 | Partial capture |
| 09-17 19:01 | 160m | -8 / - | RI1FJZ | - / - | 7 | Partial capture |
| 09-17 18:54 | 160m | -9 / - | RI1FJZ | - / - | 3 | Partial capture |
| 09-16 18:17 | 80m | 0 / - | RI1FJZ | - / -6 | 9 | Partial capture |
| 09-16 18:11 | 80m | +3 / - | RI1FJZ | - / - | 7 | Partial capture |
| 09-16 17:55 | 80m | -4 / - | RI1FJZ | - / -19 | 14 | Partial capture |
| 09-04 18:25 | 160m | +10 / -2 | G4IRN | -2 / -5 | 5 | ✓ Full exchange observed |
| 08-30 21:02 | 160m | -12 / -7 | F5LOW | -6 / -14 | 4 | ✓ Full exchange observed |
| 08-30 21:02 | 160m | -14 / -12 | UA3ZUX | +18 / -7 | 6 | ✓ Full exchange observed |
| 08-30 21:01 | 160m | -10 / -16 | DL3TC | -19 / -15 | 5 | ✓ Full exchange observed |
| 08-30 21:00 | 160m | -14 / - | SO5WD | -6 / -15 | 3 | ✓ Closing observed |
| 08-30 20:57 | 160m | -12 / - | F4GGS | -4 / -6 | 4 | Partial capture |
| 08-30 20:57 | 160m | -14 / - | OH6NGG | -11 / +4 | 6 | ✓ Full exchange observed |
| 08-27 18:03 | 80m | -4 / - | RI1FJL | - / -1 | 28 | Partial capture |
| 08-26 20:30 | 80m | -14 / - | RI1FJL | - / - | 2 | Partial capture |
| 08-26 19:55 | 80m | -8 / - | RI1FJL | - / - | 15 | Partial capture |
| 08-26 19:49 | 80m | -8 / - | RI1FJL | - / - | 6 | Partial capture |
| 08-26 19:37 | 80m | -2 / - | RI1FJL | - / - | 2 | Partial capture |
| 08-26 19:01 | 80m | -6 / - | RI1FJL | - / - | 50 | Partial capture |
| 08-26 18:57 | 80m | -11 / - | RI1FJL | - / - | 3 | Partial capture |
| 08-26 18:51 | 80m | -12 / - | RI1FJL | - / - | 2 | Partial capture |
| 08-26 18:28 | 80m | -10 / - | RI1FJL | - / - | 12 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 190415 -2 294 RI1FJZ OH3JR KP21 (x15)
UTC dB Audio Message 165815 +14 2460 RI1FJZ OH3JR KP21 (x15)
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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