UR5ZHJ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving UR5ZHJ, decoded by SO8OO in southeastern Poland. 1,819 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 99 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-11.
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 1,819 FT8 messages attributed to UR5ZHJ as the transmitting token by decoded message structure across 99 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (65%), followed by 40 m (30%) and 20 m (5%). Most decodes (80%) 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 (85%); the estimated median was -1.6 dB.
Overview
Bands
Last attributed message: 2026-10-11 20:04 UTC
Observed FT8 message patterns
- Attributed sample
- 1,819 messages
- Active dates
- 99 UTC dates
- Estimated median S/N
- -1.6 dB
- Estimated 10th-90th percentile
- -11 to +8 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 38, moderate (-15 to -9 dB) 240, strong (≥ -8 dB) 1,541.
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 UR5ZHJ 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 UR5ZHJ
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
- KN57 · 223 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 727 km (approx.)
- Last such locator decoded
- 2026-10-11 20:03 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 | UR5ZHJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-11 20:03 | 160m | -23 / -17 | DK7ZT | 0 / - | 3 | ✓ Closing observed |
| 10-11 19:59 | 160m | - / - | UA4FKT | -9 / - | 4 | Partial capture |
| 10-11 18:56 | 160m | - / - | LY2BNL | -13 / - | 3 | Partial capture |
| 10-11 18:56 | 160m | - / -11 | LY8O | -5 / - | 3 | ✓ Closing fragment |
| 10-11 04:45 | 80m | - / -10 | DO1ID | +10 / - | 2 | ✓ Closing fragment |
| 10-10 20:50 | 80m | -1 / - | 9H6C | - / -14 | 3 | ✓ Closing fragment |
| 10-10 20:34 | 80m | +2 / -20 | V51WH | -18 / -15 | 7 | ✓ Full exchange observed |
| 10-10 20:28 | 80m | -2 / - | V51WH | - / -16 | 3 | Partial capture |
| 10-09 19:56 | 40m | -6 / - | DG1DPN | - / -15 | 2 | ✓ Closing fragment |
| 10-07 03:44 | 80m | -5 / - | IQ9SZ | - / -22 | 2 | Partial capture |
| 10-06 03:39 | 40m | -11 / - | C5R | - / -15 | 8 | Partial capture |
| 10-05 19:43 | 80m | -20 / -15 | OH8D | -4 / -10 | 4 | ✓ Full exchange observed |
| 10-05 16:27 | 80m | -9 / - | HF40BLP | - / -6 | 2 | Partial capture |
| 10-04 20:53 | 80m | +7 / - | MX0SQC | - / -8 | 4 | ✓ Closing fragment |
| 10-04 20:51 | 80m | +4 / -19 | UA0TP | -23 / -18 | 4 | ✓ Full exchange observed |
| 10-04 20:50 | 80m | +4 / - | EI2KM | - / -6 | 2 | Partial capture |
| 10-04 20:44 | 80m | -6 / +10 | UA4FKT | +9 / +3 | 5 | ✓ Full exchange observed |
| 10-04 20:40 | 80m | -8 / -1 | OK1SI | +16 / -4 | 5 | ✓ Full exchange observed |
| 10-04 20:33 | 80m | -7 / - | JA6LCJ | - / -15 | 2 | Partial capture |
| 10-04 20:29 | 80m | -10 / - | JF3LOP | - / -17 | 4 | Partial capture |
| 10-04 20:24 | 80m | -2 / - | OH6B | - / -16 | 2 | ✓ Closing fragment |
| 10-02 21:02 | 80m | +4 / - | LA5ZUA | - / -19 | 2 | ✓ Closing fragment |
| 10-02 21:01 | 80m | -1 / - | OM5YL | - / +2 | 2 | Partial capture |
| 10-02 19:38 | 80m | 0 / -13 | DO4DXA | +4 / -15 | 4 | ✓ Full exchange observed |
| 10-02 19:34 | 80m | +6 / -13 | DC4CP | 0 / -17 | 4 | ✓ Full exchange observed |
| 10-02 19:27 | 80m | -5 / - | SX2LGT | - / -15 | 2 | Partial capture |
| 10-02 19:24 | 80m | +1 / - | JN4MIV | - / -18 | 2 | Partial capture |
| 09-30 20:15 | 80m | 0 / - | V51WH | - / -1 | 2 | Partial capture |
| 09-30 20:03 | 80m | - / - | UA4FKT | +1 / - | 3 | Partial capture |
| 09-30 04:19 | 40m | -3 / -10 | KN0BLE | -17 / -10 | 6 | ✓ Full exchange observed |
| 09-29 18:44 | 40m | +7 / - | UR5WA | - / -21 | 2 | Partial capture |
| 09-29 18:43 | 40m | +7 / - | SP5MXZ | - / -10 | 2 | Partial capture |
| 09-29 18:42 | 40m | +6 / - | LZ3AI | - / -7 | 2 | ✓ Closing fragment |
| 09-29 18:39 | 40m | - / - | RZ4FWA | -18 / - | 3 | Partial capture |
| 09-29 18:38 | 40m | +7 / - | M9PXZ | -8 / -15 | 4 | ✓ Closing observed |
| 09-29 18:37 | 40m | +7 / - | BA5AN | - / -12 | 4 | ✓ Closing fragment |
| 09-29 18:35 | 40m | +4 / - | DB0IPA | - / -17 | 2 | Partial capture |
| 09-29 18:34 | 40m | +8 / - | OH6ZA | - / -18 | 2 | ✓ Closing fragment |
| 09-29 03:53 | 80m | +2 / - | KF8EXX | - / -23 | 2 | Partial capture |
| 09-29 03:49 | 80m | - / - | UA4FKT | -12 / - | 3 | Partial capture |
| 09-28 18:03 | 40m | 0 / - | YU65AEC | - / -17 | 2 | Partial capture |
| 09-27 20:36 | 80m | +6 / - | SQ7TX | - / -10 | 2 | Partial capture |
| 09-27 20:33 | 80m | +4 / - | R2EA/P | - / -18 | 2 | Partial capture |
| 09-27 20:21 | 80m | -1 / -11 | EI9FVB | -2 / -19 | 6 | ✓ Full exchange observed |
| 09-26 17:40 | 80m | - / - | UA4FKT | -4 / - | 2 | Partial capture |
| 09-26 17:39 | 80m | +5 / +5 | UR9LM | 0 / -2 | 3 | ✓ Full exchange observed |
| 09-26 02:55 | 80m | -4 / - | HI8R | - / -19 | 2 | Partial capture |
| 09-26 02:22 | 80m | -9 / - | AG2K | - / -11 | 3 | ✓ Closing fragment |
| 09-26 02:04 | 40m | - / - | RZ4FWA | -15 / - | 2 | Partial capture |
| 09-26 01:49 | 80m | -3 / - | AG2K | - / -10 | 6 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 185615 -11 1402 UR5ZHJ LY2BNL KO24 185645 -7 1753 UR5ZHJ LY8O R-11 185645 -13 1402 UR5ZHJ LY2BNL KO24 185745 -2 1753 UR5ZHJ LY8O 73 185745 -14 1402 UR5ZHJ LY2BNL KO24 195915 -12 925 UR5ZHJ UA4FKT LO23 195915 -4 1898 UR5ZHJ SQ9PBV JN99 195945 -10 925 UR5ZHJ UA4FKT LO23 (x3) 200300 +2 1452 UR5ZHJ SP3DAT JO82 200315 -24 1639 CQ UR5ZHJ KN57 200330 +2 1639 UR5ZHJ DK7ZT -17 (x2) 200415 -23 1639 DK7ZT UR5ZHJ 73
UTC dB Audio Message 202915 -2 2182 V51WH UR5ZHJ -16 (x5) 203530 -17 2699 UR5ZHJ V51WH R-20 (x2) 203745 +4 2624 V51WH UR5ZHJ RR73 (x2) 205015 -1 793 9H6C UR5ZHJ -14 (x3) 044215 -6 863 KE4EB UR5ZHJ -19 044500 +14 382 UR5ZHJ DO1ID R-10 (x2)
UTC dB Audio Message 185230 +0 832 Z31ALN UR5ZHJ -16 033945 -11 2302 C5R UR5ZHJ -15 (x8) 160145 -13 2012 TM47CDXC UR5ZHJ -08 160230 +4 1039 UR5ZHJ HA76MAV R+07 160415 +5 664 F4MXT/P UR5ZHJ -14 195515 +1 2580 DD3ZZ UR5ZHJ RR73 195645 -7 1134 DG1DPN UR5ZHJ -15 (x2)
UTC dB Audio Message 084615 -23 1600 UR5ZHJ RW6HP LN14 (x2) 184630 -10 910 UR5ZHJ DF5KX R-07 (x2) 162345 +5 639 UR5ZHJ DJ3HW R-17 (x2) 162545 -20 1878 UR5ZHJ F4HSB R+05 074530 -7 2193 IK0LYL UR5ZHJ KN57 (x2)
UTC dB Audio Message 183900 -7 2581 EN35UKR UR5ZHJ -16 (x2) 185000 -12 2374 BA5AN UR5ZHJ -19 (x3) 141545 +7 706 <...> UR5ZHJ -15 (x4) 141845 +4 2849 9A/DL1SPI UR5ZHJ -18 142015 +10 2849 XU7O UR5ZHJ -13 142215 +7 2788 <...> UR5ZHJ -14 (x2) 142315 +9 464 XU7O UR5ZHJ -15 (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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