OH7KA — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving OH7KA, decoded by SO8OO in southeastern Poland. 304 FT8 messages attributed to this token as transmitter, on 80m, 60m, 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-29 and 2026-07-30.
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 304 FT8 messages attributed to OH7KA 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 (94%), followed by 60 m (6%) and 20 m (0%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -6 dB.
Overview
Bands
Last attributed message: 2026-07-30 23:26 UTC
Observed FT8 message patterns
- Attributed sample
- 304 messages
- Active dates
- 8 UTC dates
- Estimated median S/N
- -6 dB
- Estimated 10th-90th percentile
- -17 to 0 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 46, moderate (-15 to -9 dB) 76, strong (≥ -8 dB) 182.
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 OH7KA 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 OH7KA
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
- KP41 · 179 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,361 km (approx.)
- Last such locator decoded
- 2026-07-30 23:26 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 | OH7KA S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 07-30 23:34 | 40m | - / -5 | OK1WCF | -18 / - | 2 | Partial capture |
| 07-30 23:31 | 40m | - / -13 | F5RRS | -18 / - | 6 | ✓ Closing fragment |
| 07-30 23:31 | 40m | - / - | R3SN | -17 / - | 2 | ✓ Closing fragment |
| 07-30 23:29 | 40m | - / - | 9A3AUH | -11 / - | 2 | ✓ Closing fragment |
| 07-30 23:27 | 40m | - / -8 | R5AV | -10 / - | 2 | ✓ Closing fragment |
| 07-30 23:21 | 60m | -16 / -22 | DK5WL | -7 / -1 | 5 | ✓ Full exchange observed |
| 07-30 23:21 | 60m | -18 / -15 | G0AZH | -7 / +3 | 11 | ✓ Full exchange observed |
| 07-30 23:19 | 60m | -18 / -20 | ON7KEI | -12 / -1 | 2 | Partial capture |
| 07-30 23:17 | 60m | -15 / -10 | DD6ZV | 0 / - | 4 | ✓ Closing observed |
| 07-30 23:15 | 60m | -16 / -13 | OM5JG | -2 / +6 | 6 | ✓ Full exchange observed |
| 07-30 23:05 | 80m | - / -19 | 8S7DL | +6 / - | 3 | ✓ Closing fragment |
| 07-07 23:44 | 80m | 0 / -6 | PA0RF | 0 / -5 | 4 | ✓ Full exchange observed |
| 07-07 23:42 | 80m | - / - | EI5JL | -4 / - | 2 | Partial capture |
| 07-07 23:38 | 80m | +3 / -2 | M0MLS | -7 / - | 10 | ✓ Closing observed |
| 07-07 23:35 | 80m | 0 / - | <...> | -7 / -8 | 5 | Partial capture |
| 07-07 23:34 | 80m | 0 / - | OH2BVT | +6 / +3 | 4 | ✓ Full exchange observed |
| 07-07 23:29 | 80m | -2 / -2 | SP9JMZ | +2 / -15 | 12 | ✓ Full exchange observed |
| 07-07 23:28 | 80m | -2 / -4 | UB3DRL | -4 / -6 | 5 | ✓ Full exchange observed |
| 07-07 23:22 | 80m | -2 / -10 | DL1UDO | +1 / -13 | 5 | ✓ Full exchange observed |
| 07-07 23:21 | 80m | - / - | DA6PM | -19 / - | 10 | Partial capture |
| 07-07 23:17 | 80m | -3 / 0 | OH3NXW | +12 / -1 | 5 | ✓ Full exchange observed |
| 07-07 23:14 | 80m | - / - | DA6PM | -22 / - | 3 | Partial capture |
| 07-07 23:14 | 80m | -2 / -4 | HG8IT | +7 / -12 | 5 | ✓ Full exchange observed |
| 07-07 23:10 | 80m | -2 / -1 | UA3ATQ | -6 / -13 | 4 | ✓ Full exchange observed |
| 07-07 23:08 | 80m | - / - | DA6PM | -14 / - | 2 | Partial capture |
| 07-07 23:07 | 80m | - / - | PA3MVD | -13 / - | 29 | Partial capture |
| 07-07 23:04 | 80m | - / - | SP9JMZ | +5 / - | 4 | Partial capture |
| 07-07 23:02 | 80m | 0 / - | <...> | - / -9 | 2 | Partial capture |
| 07-07 22:58 | 80m | - / - | EA3HMM | -3 / - | 3 | Partial capture |
| 07-06 23:08 | 80m | -4 / -13 | 4X1YA | 0 / -5 | 4 | ✓ Full exchange observed |
| 07-06 23:00 | 80m | -5 / -4 | OK1VA | +8 / -5 | 4 | ✓ Full exchange observed |
| 07-06 22:55 | 80m | -2 / 0 | LB7ZG | +5 / -6 | 6 | ✓ Full exchange observed |
| 07-06 22:51 | 80m | -1 / -14 | CT7AUT | -19 / -17 | 13 | Partial capture |
| 07-06 22:47 | 80m | -6 / 0 | SP9TBT | +11 / -7 | 9 | ✓ Full exchange observed |
| 07-06 22:47 | 80m | -5 / -9 | OH5BM | +7 / - | 5 | ✓ Closing observed |
| 07-06 22:44 | 80m | -8 / - | OH4EBD | -10 / -7 | 6 | ✓ Full exchange observed |
| 07-06 22:40 | 80m | - / - | DB5HA | -23 / - | 3 | Partial capture |
| 07-06 22:39 | 80m | - / - | F6BHK | -14 / - | 2 | Partial capture |
| 07-06 22:37 | 80m | 0 / -18 | TN8GD | -16 / - | 6 | Partial capture |
| 07-06 22:35 | 80m | - / - | CT7AUT | -15 / - | 3 | Partial capture |
| 07-06 22:27 | 80m | -5 / -14 | DO1SWC | -10 / -16 | 10 | ✓ Full exchange observed |
| 07-06 22:26 | 80m | -3 / -11 | HG8LXL | +18 / -11 | 9 | ✓ Full exchange observed |
| 07-06 22:25 | 80m | - / - | CT7AUT | -20 / - | 3 | Partial capture |
| 07-06 22:25 | 80m | - / - | G6PWS | -13 / - | 10 | Partial capture |
| 07-06 22:25 | 80m | -6 / -7 | SP6FME | +15 / -3 | 5 | ✓ Full exchange observed |
| 07-06 22:22 | 80m | -8 / -5 | DK7UY | +2 / -5 | 6 | ✓ Full exchange observed |
| 07-06 22:22 | 80m | -7 / -15 | IW2DNI | +2 / -11 | 5 | ✓ Full exchange observed |
| 07-06 22:03 | 20m | - / -7 | EA8UP | -2 / - | 2 | ✓ Closing fragment |
| 07-06 19:37 | 20m | - / -14 | JA0LFV | -16 / - | 2 | Partial capture |
| 07-06 19:37 | 20m | - / -16 | YO9PH | -2 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 232815 -9 2089 OH7KA R5AV RR73 232945 -9 2571 OH7KA 9A3AUH JN75 233145 -19 1180 OH7KA R3SN KO94 233145 -19 1967 OH7KA F5RRS JN36 233145 -13 2571 OH7KA 9A3AUH 73 233215 -17 1967 OH7KA F5RRS JN36 233245 -14 1734 OH7KA SP0DF +00 233245 -15 1180 OH7KA R3SN 73 233245 -19 1967 OH7KA F5RRS JN36 (x3) 233415 -18 2089 OH7KA OK1WCF JO80 233415 -18 1967 OH7KA F5RRS 73 233445 -17 2089 OH7KA OK1WCF R-05 233615 -21 1533 OH7KA PD0LBY 73
UTC dB Audio Message 232145 -6 629 OH7KA G0AZH IO83 232145 -7 1777 OH7KA DK5WL R-22 232200 -15 1313 DK5WL OH7KA RR73 232215 -8 1777 OH7KA DK5WL 73 232230 -18 1313 CQ OH7KA KP41 232245 -8 630 OH7KA G0AZH IO83 232300 -16 1313 G0AZH OH7KA +03 232315 -5 629 OH7KA G0AZH IO83 232330 -21 1313 G0AZH OH7KA +03 232345 -8 629 OH7KA G0AZH R-15 232400 -20 1313 G0AZH OH7KA RR73 232415 -6 630 OH7KA G0AZH R-15 232430 -13 1313 G0AZH OH7KA RR73 232445 -8 629 OH7KA G0AZH R-15 232600 -17 1313 CQ OH7KA KP41
UTC dB Audio Message 234030 +0 1207 M0MLS OH7KA 73 234200 +3 1207 CQ OH7KA KP41 (x2) 234245 -6 2447 OH7KA EI5JL IO63 234300 +3 1206 CQ OH7KA KP41 234315 -1 2447 OH7KA EI5JL IO63 234330 +0 1206 CQ OH7KA KP41 (x2) 234415 -4 1206 OH7KA PA0RF JO32 234430 +0 1206 PA0RF OH7KA -05 234445 +2 1206 OH7KA PA0RF R-06 (x2) 230515 +7 1004 OH7KA 8S7DL -19 (x3)
UTC dB Audio Message 191900 -12 1886 OH7KA ON6DSL R-10 (x5) 193130 +1 2119 OH7KA YO9PH -14 193300 -24 1646 OH7KA LZ2VQ KN23 (x2) 193700 -3 2119 OH7KA YO9PH -16 193700 -9 2627 OH7KA JA0LFV -14 193730 -2 2119 OH7KA YO9PH RR73 193730 -22 1647 OH7KA JA0LFV -14 193900 -12 2558 OH7KA IQ4JO JN63 220330 -1 1764 OH7KA EA8UP -07 (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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