ON5RZ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving ON5RZ, decoded by SO8OO in southeastern Poland. 2,986 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 69 UTC dates in the available aggregate history. Observed between 2026-06-29 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 2,986 FT8 messages attributed to ON5RZ as the transmitting token by decoded message structure across 69 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (52%), followed by 80 m (20%) and 10 m (13%). The busiest six-hour window was 17:00-23:00 UTC, containing 48% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.
Overview
Bands
Last attributed message: 2026-10-11 21:05 UTC
Observed FT8 message patterns
- Attributed sample
- 2,986 messages
- Active dates
- 69 UTC dates
- Estimated median S/N
- -10 dB
- Estimated 10th-90th percentile
- -19 to -1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 627, moderate (-15 to -9 dB) 1,082, strong (≥ -8 dB) 1,277.
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 ON5RZ 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 ON5RZ
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
- JO21 · 2,101 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,192 km (approx.)
- Last such locator decoded
- 2026-10-11 21:05 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 | ON5RZ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-11 21:04 | 80m | -17 / - | D2UY | - / - | 4 | Partial capture |
| 10-11 20:50 | 80m | +1 / - | D2UY | - / - | 12 | Partial capture |
| 10-10 03:43 | 80m | -4 / 0 | DO1OAS | -6 / -4 | 5 | ✓ Full exchange observed |
| 10-10 03:42 | 80m | -2 / -10 | EC3A | +2 / - | 3 | ✓ Closing observed |
| 10-10 03:41 | 80m | -3 / - | UT2AU | +4 / - | 3 | ✓ Closing observed |
| 10-10 03:37 | 80m | -1 / - | VP2MAA | - / -10 | 8 | ✓ Closing fragment |
| 10-10 03:31 | 80m | +1 / - | VP2MAA | - / - | 2 | Partial capture |
| 10-09 17:57 | 40m | +4 / - | K6GQ | - / - | 7 | Partial capture |
| 10-08 23:57 | 40m | - / - | RZ4FWA | -18 / - | 2 | Partial capture |
| 10-08 23:52 | 40m | - / +3 | F6FDY | -8 / - | 6 | ✓ Closing fragment |
| 10-08 23:13 | 80m | -12 / -6 | OM0RX | +4 / 0 | 6 | ✓ Full exchange observed |
| 10-08 23:12 | 80m | -6 / - | TA4SSK | - / - | 9 | Partial capture |
| 10-08 23:08 | 80m | -4 / - | AP5ARS | - / - | 3 | Partial capture |
| 10-08 23:02 | 60m | -13 / - | EA8DQE | - / - | 5 | Partial capture |
| 10-07 18:52 | 40m | -9 / - | DD3ZZ | - / - | 5 | Partial capture |
| 10-04 18:13 | 40m | -4 / - | EA9DX | - / -10 | 8 | Partial capture |
| 10-04 18:12 | 40m | -8 / - | F4HSB | - / -17 | 2 | Partial capture |
| 10-04 18:10 | 40m | -6 / - | UN3P | - / -13 | 4 | ✓ Closing fragment |
| 10-04 18:09 | 40m | -5 / - | M0SVX | - / -2 | 2 | ✓ Closing fragment |
| 10-03 22:31 | 60m | -13 / - | 9T0MD | - / - | 2 | Partial capture |
| 10-03 01:09 | 80m | -7 / - | V26K | - / - | 6 | Partial capture |
| 10-03 00:34 | 60m | +6 / - | V26K | - / - | 8 | Partial capture |
| 10-01 03:45 | 60m | -13 / - | K6VHF/HR9 | - / -12 | 2 | Partial capture |
| 10-01 03:42 | 60m | -13 / - | DP75BAC | - / -13 | 6 | Partial capture |
| 10-01 03:26 | 80m | - / -19 | TI2SD | -14 / - | 2 | ✓ Closing fragment |
| 10-01 03:22 | 80m | +3 / - | TI2SD | - / - | 3 | Partial capture |
| 10-01 03:16 | 80m | -6 / - | V47YA | - / - | 6 | Partial capture |
| 09-29 02:11 | 60m | -12 / - | VA3MBT | - / - | 2 | Partial capture |
| 09-29 02:09 | 60m | -12 / -17 | EA5FD | -15 / -4 | 3 | ✓ Full exchange observed |
| 09-29 02:03 | 60m | -6 / - | W7ZR | - / - | 8 | Partial capture |
| 09-28 17:47 | 80m | -8 / -12 | SP2L | +11 / -1 | 5 | ✓ Full exchange observed |
| 09-28 17:43 | 80m | -9 / - | ZS6BUN | - / - | 5 | Partial capture |
| 09-26 07:29 | 40m | -16 / - | K2GOD | - / - | 2 | Partial capture |
| 09-26 07:18 | 40m | - / -11 | SQ2RBY/P | -15 / - | 4 | ✓ Closing fragment |
| 09-26 07:03 | 40m | -20 / - | VK2ZR | - / - | 2 | Partial capture |
| 09-26 07:00 | 40m | -14 / - | ZL3JWH | - / -17 | 2 | ✓ Closing fragment |
| 09-26 06:42 | 40m | -23 / - | ZL3WO | - / - | 2 | Partial capture |
| 09-26 06:36 | 40m | -22 / - | ZL3WO | - / - | 2 | Partial capture |
| 09-26 06:27 | 40m | -17 / - | 3D2USU | - / - | 2 | Partial capture |
| 09-26 06:14 | 40m | - / - | YO4FZV | -12 / - | 2 | Partial capture |
| 09-24 19:59 | 40m | +8 / - | JF0CSK | - / - | 3 | Partial capture |
| 09-24 19:46 | 40m | -10 / - | HB10GBT | - / -8 | 6 | Partial capture |
| 09-24 19:17 | 40m | +3 / - | VJ6X | - / -17 | 7 | ✓ Closing fragment |
| 09-24 04:55 | 80m | -13 / - | HF26BMS | - / -15 | 6 | Partial capture |
| 09-22 01:42 | 60m | -11 / - | VE3XN | - / - | 5 | Partial capture |
| 09-21 13:11 | 40m | -11 / - | DK4NB | - / - | 8 | ✓ Closing fragment |
| 09-21 13:09 | 40m | -18 / - | F4NKF | - / -18 | 2 | Partial capture |
| 09-21 12:59 | 40m | -8 / - | M8FQT | - / -1 | 3 | ✓ Closing fragment |
| 09-21 06:43 | 40m | -9 / - | KJ5PTH | - / - | 5 | Partial capture |
| 09-21 06:35 | 40m | -10 / - | KJ5PTH | - / - | 8 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 205100 +2 2907 D2UY ON5RZ JO21 (x15)
UTC dB Audio Message 235200 -12 1289 ON5RZ F6FDY JN33 (x6) 235745 -19 2027 ON5RZ RZ4FWA LO23 (x2) 175745 +9 2903 K6GQ ON5RZ JO21 (x7)
UTC dB Audio Message 003415 +7 2787 V26K ON5RZ JO21 (x8) 223115 -12 2102 9T0MD ON5RZ JO21 (x2) 230245 -10 1390 EA8DQE ON5RZ JO21 (x5)
UTC dB Audio Message 203415 -12 1234 ON5RZ DG1KPC RR73 041700 -14 1956 ON5RZ F4FQY -14 (x2) 205230 -15 238 ON5RZ 4L7T -12 (x2)
UTC dB Audio Message 182730 +3 884 OH6QU ON5RZ JO21 (x2) 182815 +5 2158 ON5RZ OH6QU -04 182830 +1 884 OH6QU ON5RZ R+03 182845 +7 2158 ON5RZ OH6QU RR73 182900 -4 884 OH6QU ON5RZ 73 183015 -1 1149 ES4TRI ON5RZ JO21 (x7) 183445 -10 1149 <...> ON5RZ JO21 (x2)
UTC dB Audio Message 130130 -21 2185 OH3FWG ON5RZ 73 144000 -22 1870 SP9NSQ ON5RZ JO21 (x4) 144645 -20 1869 YC1BNX ON5RZ JO21 (x10)
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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