OH5YZ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving OH5YZ, decoded by SO8OO in southeastern Poland. 234 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-09-30 and 2026-10-02.
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 234 FT8 messages attributed to OH5YZ as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (71%), followed by 160 m (15%) and 40 m (13%). Several six-hour UTC windows tied for the largest share (76%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10.5 dB.
Overview
Bands
Last attributed message: 2026-10-02 21:20 UTC
Observed FT8 message patterns
- Attributed sample
- 234 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -10.5 dB
- Estimated 10th-90th percentile
- -18 to -3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 46, moderate (-15 to -9 dB) 103, strong (≥ -8 dB) 85.
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 OH5YZ 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 OH5YZ
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
- KP31
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,325 km (approx.)
- Last such locator decoded
- 2026-10-02 05:49 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 | OH5YZ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-02 21:17 | 60m | -11 / - | OH3GBW | - / +1 | 7 | Partial capture |
| 10-02 21:13 | 60m | -10 / -7 | IU3ACL | +4 / -1 | 8 | ✓ Full exchange observed |
| 10-02 21:09 | 60m | -8 / - | ER5DX | -1 / -6 | 5 | ✓ Closing observed |
| 10-02 21:01 | 60m | -6 / - | 9K2HS | - / 0 | 12 | Partial capture |
| 10-02 20:54 | 60m | -12 / - | VE1YX | - / -9 | 4 | ✓ Closing fragment |
| 10-02 20:51 | 60m | -14 / - | HF1Z | -7 / - | 5 | Partial capture |
| 10-02 20:50 | 60m | -6 / - | OZ1NIB | - / -12 | 2 | ✓ Closing fragment |
| 10-02 20:35 | 60m | -11 / - | VE1YX | - / -9 | 19 | Partial capture |
| 10-02 19:48 | 60m | -9 / - | HF1Z | - / - | 11 | Partial capture |
| 10-02 19:45 | 60m | -7 / -21 | IZ0MQN | -19 / -8 | 10 | ✓ Full exchange observed |
| 10-02 19:43 | 60m | -8 / - | TF1A | - / -2 | 4 | ✓ Closing fragment |
| 10-02 19:37 | 60m | -6 / - | OH3MB | - / -7 | 7 | Partial capture |
| 10-02 06:35 | 60m | - / -15 | F4PAN | -18 / - | 4 | Partial capture |
| 10-02 06:04 | 60m | -10 / +2 | OH2BYJ | -10 / - | 5 | ✓ Full exchange observed |
| 10-02 05:56 | 60m | -14 / -11 | DK6WH | -10 / -9 | 4 | ✓ Full exchange observed |
| 10-02 05:54 | 60m | -12 / -10 | DG4HAD | -19 / -11 | 3 | ✓ Full exchange observed |
| 10-02 05:19 | 60m | -20 / - | CE2SV | - / -13 | 2 | Partial capture |
| 10-02 05:07 | 60m | - / -15 | PE1NPS | +3 / - | 3 | ✓ Closing fragment |
| 10-02 05:06 | 60m | - / - | F5MYK | -8 / - | 2 | ✓ Closing fragment |
| 10-01 20:04 | 60m | -6 / - | ON6WDL | - / -18 | 3 | Partial capture |
| 10-01 20:01 | 60m | -12 / - | ON7PM | - / -11 | 3 | ✓ Closing fragment |
| 10-01 19:57 | 60m | - / - | US3LX | -16 / - | 6 | Partial capture |
| 10-01 19:57 | 60m | -13 / -7 | ER3UA | -4 / -8 | 6 | ✓ Full exchange observed |
| 10-01 19:56 | 60m | -13 / - | ON7PM | - / -13 | 6 | Partial capture |
| 10-01 19:54 | 60m | -14 / -9 | SV1DZB | -11 / -4 | 5 | ✓ Full exchange observed |
| 10-01 19:51 | 60m | -12 / -3 | F8MGW | -12 / -3 | 5 | ✓ Full exchange observed |
| 10-01 19:49 | 60m | -11 / -3 | SP3JHZ | -6 / +2 | 5 | ✓ Full exchange observed |
| 10-01 19:48 | 60m | -16 / +9 | OE8TIR | 0 / -6 | 5 | ✓ Full exchange observed |
| 10-01 19:45 | 60m | -16 / 0 | F6HRP | +10 / +5 | 4 | ✓ Full exchange observed |
| 10-01 19:38 | 60m | -4 / -15 | ON1AEY | -6 / -6 | 6 | ✓ Full exchange observed |
| 10-01 19:32 | 60m | -9 / - | S51XA | - / -8 | 10 | Partial capture |
| 10-01 19:30 | 60m | -9 / -7 | G0RWF | -18 / -15 | 4 | ✓ Full exchange observed |
| 10-01 19:29 | 60m | -14 / - | SP2BBQ | - / -13 | 2 | ✓ Closing fragment |
| 10-01 19:27 | 60m | -4 / -4 | SP5JMA | -4 / +2 | 4 | ✓ Full exchange observed |
| 10-01 19:25 | 60m | -14 / - | SP1RKT | - / +1 | 2 | ✓ Closing fragment |
| 10-01 19:25 | 60m | -2 / +1 | G4ZFJ | +3 / -2 | 7 | ✓ Full exchange observed |
| 10-01 19:25 | 60m | - / - | SP5JMA | -10 / - | 2 | Partial capture |
| 10-01 19:23 | 60m | -3 / -11 | OE6BHD | -2 / -6 | 5 | ✓ Full exchange observed |
| 10-01 19:22 | 60m | 0 / 0 | F4GIH | -6 / -4 | 6 | ✓ Full exchange observed |
| 10-01 19:20 | 60m | -1 / +1 | ES5RY | -10 / - | 5 | ✓ Closing observed |
| 10-01 19:19 | 60m | -16 / -13 | LZ9DX | -12 / -15 | 4 | ✓ Full exchange observed |
| 10-01 18:54 | 40m | -14 / - | SA7CHI | - / -7 | 2 | ✓ Closing fragment |
| 10-01 18:50 | 40m | -20 / - | SA7CHI | - / -7 | 4 | Partial capture |
| 10-01 18:17 | 40m | -18 / - | RD0L | - / -17 | 4 | Partial capture |
| 10-01 18:14 | 40m | -13 / -6 | DD4U | -5 / -12 | 2 | Partial capture |
| 10-01 18:11 | 40m | - / -16 | JA4FKX | -4 / - | 2 | ✓ Closing fragment |
| 10-01 18:05 | 40m | -10 / - | UA4FEN | - / -2 | 2 | ✓ Closing fragment |
| 10-01 18:04 | 40m | -6 / - | SH7KAT | - / -7 | 2 | ✓ Closing fragment |
| 10-01 17:40 | 40m | -17 / - | DK8HC | - / -8 | 3 | Partial capture |
| 10-01 17:36 | 40m | - / -16 | UB3BCE | -6 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 211300 +7 2292 OH5YZ IU3ACL JN65 (x3) 211415 -10 2293 IU3ACL OH5YZ -01 (x2) 211500 +5 2292 OH5YZ IU3ACL R-07 211515 -8 2292 IU3ACL OH5YZ RR73 211530 -3 2292 OH5YZ IU3ACL 73 211745 -10 2292 OH3GBW OH5YZ +01 (x7)
UTC dB Audio Message 181145 -3 409 OH5YZ JA4FKX R-16 (x2) 181445 -13 2112 DD4U OH5YZ -12 181500 -5 1266 OH5YZ DD4U R-06 181700 +7 491 OH5YZ IU4WSH JN44 181715 -14 2112 RD0L OH5YZ -17 (x4) 185045 -17 2112 SA7CHI OH5YZ -07 (x6)
UTC dB Audio Message 015915 -17 2123 PI4DX OH5YZ -08 (x2) 020100 -18 2123 CT2GQA OH5YZ -08 (x3) 044830 -16 1841 OH5YZ LB4PI R-05 (x3)
UTC dB Audio Message 023145 +0 2120 G8OO OH5YZ -16 (x4) 023415 -5 2120 OH2JIZ OH5YZ -16 (x3) 023730 -2 2120 OZ7FOC OH5YZ -12 (x4) 025245 -2 2120 OH0Z OH5YZ +31 025300 +9 2358 OH5YZ OH0Z R+07 025315 -2 2120 OH0Z OH5YZ RR73 025330 +8 2358 OH5YZ OH0Z 73
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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