OH3JF — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving OH3JF, decoded by SO8OO in southeastern Poland. 2,964 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 62 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-08.
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 2,964 FT8 messages attributed to OH3JF as the transmitting token by decoded message structure across 62 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (56%), followed by 20 m (22%) and 40 m (17%). Most decodes (58%) fell within the six-hour window 00:00-06:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (76%); the estimated median was -3 dB.
Overview
Bands
Last attributed message: 2026-10-08 06:21 UTC
Observed FT8 message patterns
- Attributed sample
- 2,964 messages
- Active dates
- 62 UTC dates
- Estimated median S/N
- -3 dB
- Estimated 10th-90th percentile
- -13 to +8 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 208, moderate (-15 to -9 dB) 496, strong (≥ -8 dB) 2,260.
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 OH3JF 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 OH3JF
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 · 2,116 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,192 km (approx.)
- Last such locator decoded
- 2026-10-08 06:19 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 | OH3JF S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-08 06:20 | 60m | -8 / - | M1FCV | - / -16 | 2 | ✓ Closing fragment |
| 10-08 05:07 | 60m | +3 / -8 | OE1TKS | -11 / -10 | 5 | ✓ Full exchange observed |
| 10-08 04:46 | 60m | -12 / - | EA3HH | - / -12 | 2 | ✓ Closing fragment |
| 10-08 04:37 | 60m | - / - | EA5D | -22 / - | 4 | Partial capture |
| 10-08 04:36 | 60m | -8 / - | F4HQL | - / -14 | 2 | ✓ Closing fragment |
| 10-08 04:29 | 60m | 0 / - | S56GS | - / -22 | 4 | ✓ Closing fragment |
| 10-08 04:19 | 60m | -4 / +8 | IT9JNR | +3 / - | 3 | ✓ Closing observed |
| 10-08 04:13 | 60m | - / -14 | IW1FRD | -3 / - | 3 | ✓ Closing fragment |
| 10-07 23:53 | 60m | +2 / - | EA8DS | - / -2 | 2 | ✓ Closing fragment |
| 10-07 22:48 | 60m | -4 / -3 | IZ0MIT | +3 / -5 | 5 | ✓ Full exchange observed |
| 10-07 22:45 | 60m | -4 / -1 | CT3MD | -10 / - | 5 | ✓ Full exchange observed |
| 10-07 22:37 | 60m | -7 / - | VE1CHL | - / -10 | 4 | ✓ Closing fragment |
| 10-07 22:30 | 60m | -2 / -11 | TA1SA | -7 / -3 | 6 | ✓ Full exchange observed |
| 10-07 22:26 | 60m | -3 / -12 | OH1PH | -19 / -14 | 7 | ✓ Full exchange observed |
| 10-07 22:20 | 60m | -4 / -3 | F5PBG | -8 / -3 | 4 | ✓ Full exchange observed |
| 10-07 22:19 | 60m | -8 / - | DB3EH | -15 / +7 | 5 | ✓ Full exchange observed |
| 10-07 02:40 | 80m | +2 / - | W6IBU | - / - | 2 | Partial capture |
| 10-07 02:37 | 80m | -1 / +2 | R4FDD | +1 / +3 | 5 | ✓ Full exchange observed |
| 10-06 22:49 | 60m | -5 / - | DB5AE | - / -7 | 3 | Partial capture |
| 10-06 22:42 | 60m | -17 / - | DB5AE | - / -7 | 3 | Partial capture |
| 10-06 22:35 | 60m | - / - | DB5AE | -2 / - | 2 | Partial capture |
| 10-06 19:41 | 60m | -5 / - | EB5IVB | -20 / - | 2 | ✓ Closing observed |
| 10-06 19:41 | 60m | -5 / -17 | US3LX | -19 / -16 | 7 | ✓ Full exchange observed |
| 10-06 19:39 | 60m | -9 / - | M0FOX | - / +10 | 2 | ✓ Closing fragment |
| 10-06 19:36 | 60m | -9 / +4 | DF3YG | -7 / +6 | 4 | ✓ Full exchange observed |
| 10-06 19:26 | 60m | -7 / -19 | CT7BIZ | -13 / +8 | 5 | ✓ Full exchange observed |
| 10-06 19:18 | 60m | -2 / -4 | IV3DSG | +14 / +10 | 5 | ✓ Full exchange observed |
| 10-06 19:12 | 60m | -4 / - | LB7ZK | - / 0 | 2 | ✓ Closing fragment |
| 10-06 19:09 | 60m | -6 / - | LB7ZK | - / +4 | 2 | ✓ Closing fragment |
| 10-06 19:01 | 60m | -4 / - | OZ1LXL | +5 / - | 5 | ✓ Full exchange observed |
| 10-06 18:57 | 60m | - / -9 | OE6BME | 0 / - | 3 | ✓ Closing fragment |
| 10-06 18:36 | 60m | -4 / - | YB1AR | - / - | 37 | Partial capture |
| 10-06 18:31 | 60m | -2 / +6 | OZ1BM | -9 / +5 | 9 | ✓ Full exchange observed |
| 10-06 18:26 | 60m | -4 / 0 | G4MHJ | -14 / -6 | 5 | ✓ Full exchange observed |
| 10-06 18:18 | 60m | +3 / - | PC7W | - / -1 | 2 | ✓ Closing fragment |
| 10-06 18:15 | 60m | +2 / -4 | F1UGD | -9 / 0 | 5 | ✓ Full exchange observed |
| 10-06 18:12 | 60m | +6 / -5 | SP3EIE | -10 / +4 | 6 | ✓ Full exchange observed |
| 10-06 18:11 | 60m | +5 / -2 | YO2MAX | +2 / - | 4 | ✓ Closing observed |
| 10-06 05:03 | 40m | - / -17 | YO4SX | -6 / - | 3 | ✓ Closing fragment |
| 10-06 05:03 | 40m | -7 / - | HA1MHC | - / -11 | 2 | Partial capture |
| 10-06 04:54 | 40m | -8 / - | 4X5CG | - / -19 | 2 | ✓ Closing fragment |
| 10-06 04:53 | 40m | - / - | TA3NK | -7 / - | 9 | Partial capture |
| 10-06 04:38 | 60m | -11 / -11 | S57MK | -19 / -1 | 5 | ✓ Full exchange observed |
| 10-06 04:23 | 60m | - / -1 | F4IIX | -5 / - | 2 | ✓ Closing fragment |
| 10-06 03:18 | 60m | -6 / -17 | 4X5CG | -8 / -9 | 3 | ✓ Full exchange observed |
| 10-06 03:02 | 60m | -11 / - | 4X5CG | - / -9 | 10 | Partial capture |
| 10-06 03:02 | 60m | - / - | PSE | +4 / - | 4 | Partial capture |
| 10-05 22:25 | 60m | - / -1 | DL2KMH | -1 / - | 2 | ✓ Closing fragment |
| 10-05 21:14 | 60m | - / -5 | G1XOW | +6 / - | 3 | ✓ Closing fragment |
| 10-05 20:29 | 60m | 0 / - | DH4PAP | -3 / -3 | 3 | ✓ Closing observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 050430 -4 2581 CQ DX OH3JF KP20 (x6) 050715 -10 1943 OH3JF OE1TKS JN88 050730 +3 2581 OE1TKS OH3JF -10 050745 -12 1943 OH3JF OE1TKS R-08 050800 +3 2581 OE1TKS OH3JF RR73 050815 -12 1943 OH3JF OE1TKS 73 061900 -5 2581 CQ DX OH3JF KP20 (x2) 062030 -7 2581 M1FCV OH3JF -16 (x2)
UTC dB Audio Message 042000 -15 2081 CQ DX OH3JF KP20 (x3) 042130 -12 2081 ON1JP OH3JF R-13 (x2) 023615 -4 2566 CQ DX OH3JF KP20 (x3) 023730 +5 2567 OH3JF R4FDD LO33 023745 -1 2566 R4FDD OH3JF +03 023800 +0 2567 OH3JF R4FDD R+02 023815 -1 2566 R4FDD OH3JF RR73 023830 -1 2567 OH3JF R4FDD 73 024000 +4 2566 W6IBU OH3JF KP20 (x2)
UTC dB Audio Message 045500 -10 717 OH3JF TA3NK KM39 (x6) 050100 -7 2075 CQ DX OH3JF KP20 (x4) 050300 -3 2074 HA1MHC OH3JF -11 (x2) 050345 -6 2082 OH3JF YO4SX KN44 (x3)
UTC dB Audio Message 222915 -8 2403 RI1FJZ OH3JF KP20 (x10) 223445 -1 2403 CQ DX OH3JF KP20 (x2) 204845 -23 2072 RI1FJZ OH3JF KP20 (x3)
UTC dB Audio Message 020400 -8 426 AI5OS OH3JF -05 (x12) 041245 -20 2104 OH3JF EP2AES LM55 (x3)
UTC dB Audio Message 101215 -11 1345 OH3JF UA3ZUX KO90 (x2) 154645 -17 2325 OH3JF R7OV 73 084145 -4 438 OH3JF IU3GOR R-10 (x2)
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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