US8KA — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving US8KA, decoded by SO8OO in southeastern Poland. 2,551 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 19 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-18.
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 2,551 FT8 messages attributed to US8KA as the transmitting token by decoded message structure across 19 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (74%), followed by 80 m (26%). Most decodes (52%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (80%); the estimated median was +4 dB.
Overview
Bands
Last attributed message: 2026-10-18 03:19 UTC
Observed FT8 message patterns
- Attributed sample
- 2,551 messages
- Active dates
- 19 UTC dates
- Estimated median S/N
- +4 dB
- Estimated 10th-90th percentile
- -14 to +18.4 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 212, moderate (-15 to -9 dB) 290, strong (≥ -8 dB) 2,049.
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 US8KA 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 US8KA
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
- KO30 · 1,543 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 376 km (approx.)
- Last such locator decoded
- 2026-10-18 03:19 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 | US8KA S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-23 20:46 | 40m | - / - | EA1NT | -12 / - | 2 | ✓ Closing fragment |
| 10-23 20:33 | 40m | - / -4 | EA3BBA | -2 / - | 3 | ✓ Closing fragment |
| 10-23 20:19 | 40m | - / -2 | TA2ED | -9 / - | 2 | Partial capture |
| 10-18 03:45 | 40m | - / - | IZ5FSO | +5 / - | 2 | ✓ Closing fragment |
| 10-18 03:42 | 40m | - / -11 | DJ9MA | -6 / - | 3 | ✓ Closing fragment |
| 10-18 03:12 | 40m | - / -7 | OE5FIL | -9 / - | 3 | ✓ Closing fragment |
| 10-18 03:02 | 40m | - / - | F4PCM | +6 / - | 2 | ✓ Closing fragment |
| 10-18 03:01 | 40m | - / -3 | HI3LER | -10 / - | 2 | ✓ Closing fragment |
| 10-18 02:55 | 40m | - / -5 | F3CJ | -20 / - | 7 | ✓ Closing fragment |
| 10-18 02:53 | 40m | - / - | IU8RFW | -2 / - | 3 | ✓ Closing fragment |
| 10-17 20:31 | 40m | - / -9 | CT7AXN | +2 / - | 3 | ✓ Closing fragment |
| 10-17 18:39 | 40m | -5 / - | US5VAC | -4 / - | 3 | ✓ Closing observed |
| 10-17 18:38 | 40m | - / - | DC6REH | -16 / - | 2 | Partial capture |
| 10-17 18:35 | 40m | -4 / -10 | SM4VZN | -9 / -5 | 5 | ✓ Full exchange observed |
| 10-17 18:32 | 40m | -7 / - | US5WDP | - / -19 | 2 | ✓ Closing fragment |
| 10-17 18:32 | 40m | -6 / -2 | DC3CD | -6 / - | 2 | ✓ Closing observed |
| 10-17 18:28 | 40m | - / - | SP1MGM | +7 / - | 2 | ✓ Closing fragment |
| 10-17 18:23 | 40m | - / 0 | G4CFS | -4 / - | 3 | ✓ Closing fragment |
| 10-17 18:14 | 40m | - / -13 | PA7D | -6 / - | 3 | ✓ Closing fragment |
| 10-17 18:09 | 40m | -12 / +4 | GJ0KYZ | +4 / -3 | 3 | ✓ Full exchange observed |
| 10-17 16:10 | 10m | - / -5 | CT7ATA | -17 / - | 3 | ✓ Closing fragment |
| 10-17 11:25 | 10m | - / -10 | EA4IDN | -16 / - | 3 | ✓ Closing fragment |
| 10-17 11:21 | 10m | - / +6 | CR7BUW | -14 / - | 4 | ✓ Closing fragment |
| 10-04 03:31 | 40m | - / - | G3TKT | -15 / - | 3 | ✓ Closing fragment |
| 10-04 03:11 | 40m | - / +6 | M0DSK | -8 / - | 2 | Partial capture |
| 10-04 02:37 | 40m | - / +5 | R4FDD | -12 / - | 2 | ✓ Closing fragment |
| 10-04 02:18 | 80m | +22 / - | DJ3QK | 0 / -10 | 3 | ✓ Closing observed |
| 10-04 02:15 | 80m | +28 / -3 | OK1WCF | +2 / - | 3 | ✓ Closing observed |
| 10-04 02:14 | 80m | +17 / - | Z62NS | +2 / +7 | 5 | ✓ Full exchange observed |
| 10-04 02:08 | 80m | +21 / -4 | LY8O | +4 / - | 5 | ✓ Full exchange observed |
| 10-04 02:07 | 80m | +10 / - | Z62NS | - / - | 3 | Partial capture |
| 10-03 20:19 | 80m | +20 / - | ON5MX | - / -8 | 7 | Partial capture |
| 10-03 20:17 | 80m | - / - | OE2AGZ | -10 / - | 2 | Partial capture |
| 10-03 20:14 | 80m | - / - | JA2IVK | -14 / - | 2 | Partial capture |
| 10-03 20:10 | 80m | +14 / +2 | YT5DL | +6 / -1 | 4 | ✓ Full exchange observed |
| 10-03 20:08 | 80m | +11 / - | Z62NS | - / - | 2 | Partial capture |
| 10-03 20:04 | 80m | +14 / -1 | F6GHG | +3 / -1 | 5 | ✓ Full exchange observed |
| 10-03 20:04 | 80m | +13 / +3 | IK7YZI | -13 / -15 | 7 | ✓ Full exchange observed |
| 10-03 20:02 | 80m | - / - | G4RUW | -16 / - | 2 | Partial capture |
| 10-03 19:59 | 80m | +14 / +7 | DO4SO | +6 / -12 | 4 | ✓ Full exchange observed |
| 10-03 19:53 | 80m | +18 / - | Z62NS | - / - | 3 | Partial capture |
| 10-03 15:07 | 40m | +6 / -14 | DL2MUC | -11 / -9 | 4 | ✓ Full exchange observed |
| 10-03 15:05 | 40m | +7 / - | F5CUN | - / -16 | 3 | ✓ Closing fragment |
| 10-03 15:04 | 40m | +6 / - | PD5MSC | -15 / -15 | 3 | ✓ Closing observed |
| 10-03 15:02 | 40m | +6 / +1 | DK3NU | -16 / -10 | 4 | ✓ Full exchange observed |
| 10-03 14:59 | 40m | - / - | F5CUN | -5 / - | 3 | Partial capture |
| 10-03 14:59 | 40m | +10 / - | SA2MCD | -22 / -16 | 4 | Partial capture |
| 10-03 14:54 | 40m | +8 / - | YD1EQN | - / -13 | 2 | ✓ Closing fragment |
| 10-03 14:52 | 40m | +8 / -6 | UT8IIV | -17 / -7 | 4 | ✓ Full exchange observed |
| 10-03 14:51 | 40m | +10 / - | PE1NZS | - / -24 | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 034245 -9 380 US8KA DJ9MA JN49 (x3) 034545 +5 379 US8KA IZ5FSO JN53 (x2) 035345 -3 1540 US8KA F4HKP JN18 201930 -9 690 US8KA TA2ED -02 (x2) 202630 -1 2938 US8KA CT2IOK RR73 203330 -4 689 US8KA EA3BBA JN11 (x3) 203800 -12 2446 US8KA EA5IT IM99 204630 -14 1289 US8KA EA1NT IN52 (x2)
UTC dB Audio Message 111845 +6 878 US8KA CR7BRV R+02 (x2) 112715 -16 2016 US8KA CR7CDR IM58 (x2) 112130 -16 2495 US8KA CR7BUW IM58 (x4) 112500 -13 1934 US8KA EA4IDN IN70 (x3) 161015 -11 1592 US8KA CT7ATA IN50 (x3) 125315 -24 1670 US8KA F4FLF JN18
UTC dB Audio Message 020945 +22 2354 LY8O US8KA 73 021430 +16 566 Z62NS US8KA KO30 021445 +0 1332 US8KA Z62NS +18 021500 +14 566 Z62NS US8KA R+07 021515 +3 1332 US8KA Z62NS RR73 021530 +22 566 Z62NS US8KA 73 021545 -2 2220 US8KA OK1WCF JO80 (x2) 021630 +28 566 OK1WCF US8KA RR73 021700 +27 566 CQ US8KA KO30 (x2) 021800 +22 566 DJ3QK US8KA -10 021830 +25 566 CQ US8KA KO30 021930 +22 566 DJ3QK US8KA RR73 021945 +0 566 US8KA DJ3QK 73
UTC dB Audio Message 113230 -12 1054 US8KA G1OJS R-14 (x2) 114830 -9 2537 US8KA ON6FDP/P JO11 (x2) 115230 -15 2535 US8KA DJ1NE 73 115700 -5 2609 US8KA G0GHL IO82 130130 -13 1268 US8KA IK2IKW JN55 (x3) 130600 -4 2537 US8KA CT2GFJ 73 131430 +9 2259 US8KA F6FLU JN18 132600 -12 844 US8KA I1FLC -05 (x2) 133130 -8 2535 US8KA F4JUG 73 134400 -13 2535 US8KA IW5ABF R-21
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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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