UA4CKZ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving UA4CKZ, decoded by SO8OO in southeastern Poland. 93 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-09-21.
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 93 FT8 messages attributed to UA4CKZ as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (66%), followed by 80 m (18%) and 160 m (12%). 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 -10 dB.
Overview
Bands
Last attributed message: 2026-09-21 17:00 UTC
Observed FT8 message patterns
- Attributed sample
- 93 messages
- Active dates
- 9 UTC dates
- Estimated median S/N
- -10 dB
- Estimated 10th-90th percentile
- -16 to -4 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 12, moderate (-15 to -9 dB) 47, strong (≥ -8 dB) 34.
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 UA4CKZ 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.
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 | UA4CKZ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-21 17:02 | 80m | - / -4 | R3IX | +1 / - | 2 | ✓ Closing fragment |
| 09-21 16:58 | 80m | -18 / -5 | R2AVW | +6 / -2 | 4 | ✓ Full exchange observed |
| 09-21 16:57 | 80m | -14 / -1 | RA3QQI | -5 / +5 | 4 | ✓ Full exchange observed |
| 09-21 16:47 | 80m | -8 / -4 | RV3YN | -2 / -1 | 3 | ✓ Full exchange observed |
| 09-21 16:42 | 80m | -10 / -5 | UA9CFH | -17 / +1 | 4 | ✓ Full exchange observed |
| 09-21 16:20 | 40m | -8 / -12 | RQ3P | -4 / - | 2 | ✓ Closing observed |
| 09-21 16:02 | 40m | - / +2 | RA3PGR | -12 / - | 2 | ✓ Closing fragment |
| 09-21 15:58 | 40m | - / -15 | UA3WG | -9 / - | 2 | ✓ Closing fragment |
| 09-21 15:55 | 40m | -12 / - | EU6UE | - / -1 | 2 | ✓ Closing fragment |
| 09-21 15:55 | 40m | - / - | RU3T | -1 / - | 3 | Partial capture |
| 09-21 15:54 | 40m | -6 / - | UD1I | - / -4 | 2 | ✓ Closing fragment |
| 09-21 15:53 | 40m | -11 / - | UA3PTK | - / +3 | 2 | ✓ Closing fragment |
| 09-21 15:47 | 40m | -7 / - | UA3PY | - / -8 | 2 | ✓ Closing fragment |
| 09-21 15:46 | 40m | -10 / - | RA4ADF | - / -2 | 2 | ✓ Closing fragment |
| 09-21 15:43 | 40m | -14 / - | R5GG | - / -3 | 2 | ✓ Closing fragment |
| 09-15 16:38 | 40m | - / -9 | RJ6ON | -5 / - | 2 | ✓ Closing fragment |
| 09-14 17:23 | 80m | -21 / -1 | RW3PI | 0 / -2 | 2 | Partial capture |
| 09-14 16:46 | 40m | -6 / -15 | UA3PY | -10 / -2 | 5 | ✓ Full exchange observed |
| 09-14 16:44 | 40m | -10 / -17 | R3PE | -12 / -1 | 2 | Partial capture |
| 09-14 16:20 | 80m | - / -11 | R4DD | -10 / - | 2 | ✓ Closing fragment |
| 09-14 16:16 | 40m | -8 / - | R3PJ | -1 / -9 | 4 | ✓ Closing observed |
| 09-14 15:25 | 40m | -14 / 0 | RW3PI | -6 / +1 | 3 | ✓ Full exchange observed |
| 09-14 15:24 | 40m | -18 / -1 | R3PLN | -12 / - | 3 | ✓ Closing observed |
| 09-13 18:00 | 80m | -4 / +1 | UB4FGK | -6 / - | 4 | ✓ Closing observed |
| 09-13 18:00 | 80m | -8 / - | RA3SO | - / -2 | 3 | ✓ Closing fragment |
| 09-13 17:59 | 80m | -4 / - | R4DI | -10 / +5 | 4 | ✓ Full exchange observed |
| 09-13 17:56 | 40m | -13 / - | RK3YWA | -5 / - | 2 | ✓ Closing observed |
| 09-13 17:54 | 40m | - / -13 | RN3YN | 0 / - | 2 | ✓ Closing fragment |
| 09-13 17:23 | 40m | - / - | RA6OD | -2 / - | 2 | ✓ Closing fragment |
| 09-13 17:03 | 40m | - / +2 | R3PLN | -1 / - | 5 | Partial capture |
| 09-13 16:04 | 40m | -4 / +3 | R3PLN | +2 / - | 3 | ✓ Closing observed |
| 09-12 18:55 | 160m | -15 / +7 | DL1CC | 0 / -13 | 13 | ✓ Full exchange observed |
| 09-12 18:54 | 160m | -11 / - | RU3DBT | - / -12 | 3 | ✓ Closing fragment |
| 09-12 18:52 | 160m | -12 / -19 | R2DRE | -18 / - | 3 | ✓ Closing observed |
| 09-12 18:52 | 160m | -11 / -10 | UA3PTK | -18 / -5 | 5 | ✓ Full exchange observed |
| 09-12 18:50 | 160m | - / -12 | RM5F | 0 / - | 3 | ✓ Closing fragment |
| 09-12 18:50 | 160m | - / -10 | UA3PY | +8 / - | 2 | ✓ Closing fragment |
| 09-12 18:35 | 80m | - / -6 | R3PJ | 0 / - | 2 | ✓ Closing fragment |
| 09-12 18:31 | 40m | -4 / - | R4CHN | - / -13 | 3 | Partial capture |
| 09-12 18:29 | 40m | -6 / - | DS5USH | - / -14 | 2 | ✓ Closing fragment |
| 09-12 18:27 | 40m | -4 / - | R9OFA | - / -9 | 2 | ✓ Closing fragment |
| 09-12 18:23 | 40m | -6 / - | UC6W | - / -12 | 2 | ✓ Closing fragment |
| 09-12 18:21 | 40m | -12 / - | RM6OG | -14 / +7 | 3 | ✓ Closing observed |
| 09-04 18:30 | 40m | -10 / - | R6OV | - / -14 | 2 | Partial capture |
| 08-30 16:55 | 40m | - / +5 | UA3RBM | -8 / - | 3 | ✓ Closing fragment |
| 08-30 16:54 | 40m | -8 / - | RM6OS | +13 / -10 | 3 | ✓ Full exchange observed |
| 08-30 16:51 | 40m | -10 / -2 | R6OM | +5 / +3 | 3 | ✓ Full exchange observed |
| 08-29 17:15 | 40m | - / -6 | R6OIZ | -7 / - | 2 | ✓ Closing fragment |
| 08-29 17:10 | 40m | -14 / - | UI6O | - / -5 | 2 | ✓ Closing fragment |
| 08-29 17:06 | 40m | -14 / -3 | RO6OP | +8 / +5 | 3 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 164330 -18 2139 UA4CKZ UA9CFH 73 164715 -8 1386 RV3YN UA4CKZ -01 164730 -1 2334 UA4CKZ RV3YN R-04 (x2) 165715 -16 1386 RA3QQI UA4CKZ +05 165730 -2 862 UA4CKZ RA3QQI R-01 165745 -12 1386 RA3QQI UA4CKZ RR73 165800 -8 862 UA4CKZ RA3QQI 73 165815 -19 1386 R2AVW UA4CKZ -02 165830 +6 574 UA4CKZ R2AVW R-05 165845 -18 1386 R2AVW UA4CKZ RR73 165900 +6 574 UA4CKZ R2AVW 73 170045 -13 1385 UA4WCS UA4CKZ RR73 170215 +0 1811 UA4CKZ R3IX R-04 (x2)
UTC dB Audio Message 155500 -3 1424 UD1I UA4CKZ RR73 155545 -3 514 UA4CKZ RU3T LO16 155545 -11 1424 EU6UE UA4CKZ -01 155615 +1 514 UA4CKZ RU3T LO16 155615 -13 1424 EU6UE UA4CKZ RR73 155645 +0 514 UA4CKZ RU3T LO16 155645 -10 1424 R6ZL UA4CKZ -01 155800 -8 1423 UA4CKZ UA3WG R-15 (x2) 160130 -16 1424 RA3LCI UA4CKZ RR73 160245 -14 1917 UA4CKZ RA3PGR R+02 (x2) 160430 -6 1424 R3NAW UA4CKZ RR73 162045 -4 2368 UA4CKZ RQ3P R-12 162100 -8 1424 RQ3P UA4CKZ RR73
UTC dB Audio Message 185530 -11 1045 RU3DBT UA4CKZ RR73 185545 -2 1059 UA4CKZ DL1CC JO72 (x2) 185630 -13 1045 R4FDD UA4CKZ 73 185700 -15 1045 DL1CC UA4CKZ -13 (x2) 185745 +2 1987 UA4CKZ DL1CC R+07 185800 -14 1045 DL1CC UA4CKZ -13 185815 +4 1987 UA4CKZ DL1CC R+07 185830 -16 1045 DL1CC UA4CKZ -13 185845 +3 1987 UA4CKZ DL1CC R+07 (x5)
UTC dB Audio Message 172845 +3 1127 R50RKZ UA4CKZ -15 (x4)
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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