DO5SB — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DO5SB, decoded by SO8OO in southeastern Poland. 693 FT8 messages attributed to this token as transmitter, on 160m, 80m, across 37 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-10.
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 693 FT8 messages attributed to DO5SB as the transmitting token by decoded message structure across 37 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (82%), followed by 160 m (18%). Most decodes (60%) fell within the six-hour window 19:00-01:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (62%); the estimated median was -5 dB.
Overview
Bands
Last attributed message: 2026-10-10 22:28 UTC
Observed FT8 message patterns
- Attributed sample
- 693 messages
- Active dates
- 37 UTC dates
- Estimated median S/N
- -5 dB
- Estimated 10th-90th percentile
- -22 to +5.9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 144, moderate (-15 to -9 dB) 121, strong (≥ -8 dB) 428.
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 DO5SB 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 DO5SB
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
- JN59 · 411 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 777 km (approx.)
- Last such locator decoded
- 2026-10-10 20:20 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 | DO5SB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-10 22:27 | 80m | -13 / -7 | ON1BH | 0 / - | 3 | ✓ Closing observed |
| 10-10 20:20 | 80m | +3 / - | OT8P | - / - | 2 | Partial capture |
| 10-10 20:14 | 80m | -7 / 0 | DO1HO | +3 / 0 | 7 | ✓ Full exchange observed |
| 10-10 19:31 | 80m | 0 / -10 | OE1PHS | -4 / -7 | 8 | Partial capture |
| 10-10 19:27 | 80m | -10 / - | G0ORH | - / - | 2 | ✓ Closing fragment |
| 10-10 19:26 | 80m | -7 / - | IN3IBW | +8 / -1 | 3 | ✓ Closing observed |
| 10-10 19:24 | 80m | -9 / - | DL4RE | - / -5 | 3 | ✓ Closing fragment |
| 10-10 19:21 | 80m | -3 / 0 | DL1NB | -3 / +5 | 4 | ✓ Full exchange observed |
| 10-10 19:15 | 80m | -12 / - | DO4FOX | - / - | 2 | Partial capture |
| 10-10 19:12 | 80m | -12 / 0 | M9DNC | -22 / -11 | 5 | ✓ Full exchange observed |
| 10-09 20:29 | 160m | - / -13 | DB3OI | -6 / - | 2 | ✓ Closing fragment |
| 10-09 19:59 | 160m | - / -12 | 9A2RD | 0 / - | 2 | ✓ Closing fragment |
| 10-09 19:46 | 160m | - / -20 | DG2RBH | +7 / - | 5 | ✓ Closing fragment |
| 10-09 19:32 | 160m | - / -24 | HA1DAE | +7 / - | 6 | Partial capture |
| 10-09 19:26 | 160m | - / -12 | DC0GL | 0 / - | 2 | ✓ Closing fragment |
| 10-04 22:00 | 160m | - / -15 | GI4SNA | +2 / - | 2 | ✓ Closing fragment |
| 10-04 21:53 | 160m | -24 / -4 | GM4JYB | -4 / -16 | 4 | ✓ Full exchange observed |
| 10-03 20:10 | 160m | - / -20 | OK2USM | -8 / - | 7 | ✓ Closing fragment |
| 10-03 20:07 | 160m | - / -20 | IU3RRX | -3 / - | 3 | ✓ Closing fragment |
| 10-03 20:03 | 160m | - / - | OK2USM | -5 / - | 2 | Partial capture |
| 10-03 19:59 | 160m | -23 / - | DM2PE | -1 / -14 | 7 | Partial capture |
| 10-02 06:30 | 80m | -11 / - | ON1JP | - / -17 | 5 | ✓ Closing fragment |
| 10-02 06:22 | 80m | -8 / - | DA6PP | - / -18 | 2 | ✓ Closing fragment |
| 10-02 06:21 | 80m | -9 / - | DO1KPH | - / -7 | 2 | ✓ Closing fragment |
| 10-02 06:19 | 80m | -6 / +10 | ON5EA | -19 / -9 | 4 | ✓ Full exchange observed |
| 10-01 21:14 | 160m | - / -18 | DD4U | -19 / - | 3 | Partial capture |
| 10-01 20:46 | 160m | -24 / - | EI2KM | - / - | 2 | Partial capture |
| 10-01 20:23 | 160m | - / -11 | ON8DM | -4 / - | 2 | ✓ Closing fragment |
| 10-01 19:46 | 160m | - / -1 | HA8EV | -11 / - | 4 | ✓ Closing fragment |
| 10-01 19:32 | 160m | - / -20 | OH5KNL | -16 / - | 2 | ✓ Closing fragment |
| 10-01 06:27 | 80m | +3 / - | PA1CTW | - / -6 | 4 | Partial capture |
| 10-01 06:13 | 80m | +4 / +3 | DF0AWG | +2 / +8 | 6 | ✓ Full exchange observed |
| 10-01 06:04 | 80m | +7 / +1 | DF0AWG | +3 / - | 3 | Partial capture |
| 10-01 05:46 | 80m | 0 / - | DB6IF | - / -14 | 3 | ✓ Closing fragment |
| 09-30 06:55 | 80m | -17 / -7 | DM5KM | -10 / +8 | 5 | ✓ Full exchange observed |
| 09-30 06:35 | 80m | -6 / - | PA0MUS | - / - | 2 | Partial capture |
| 09-30 06:28 | 80m | -10 / - | F4ILK | - / - | 7 | Partial capture |
| 09-30 06:08 | 80m | -12 / - | HI8R | - / - | 5 | Partial capture |
| 09-28 23:44 | 160m | -16 / -16 | OM2WQ | +15 / -9 | 7 | ✓ Full exchange observed |
| 09-28 22:18 | 160m | - / - | DF3JO | -22 / - | 3 | Partial capture |
| 09-28 22:13 | 160m | -18 / -7 | DF7TV | +4 / +5 | 4 | ✓ Full exchange observed |
| 09-28 21:54 | 160m | -15 / -20 | DF4FS | -20 / -21 | 11 | ✓ Full exchange observed |
| 09-28 21:50 | 160m | -21 / - | OH5KNL | - / - | 5 | Partial capture |
| 09-28 21:46 | 160m | -14 / -6 | S52R | +4 / - | 5 | ✓ Closing observed |
| 09-28 21:44 | 160m | -21 / - | OH5KNL | - / - | 3 | Partial capture |
| 09-28 21:39 | 160m | -18 / - | OH5KNL | - / - | 5 | Partial capture |
| 09-26 21:22 | 160m | - / - | DL1AQU | -18 / - | 2 | Partial capture |
| 09-26 20:17 | 160m | -23 / - | DF0PDF | +1 / -4 | 4 | ✓ Closing observed |
| 09-26 19:56 | 160m | -22 / -14 | SP3FHV | +20 / - | 4 | ✓ Closing observed |
| 09-26 19:38 | 160m | -23 / - | IU3RRX | -6 / -19 | 8 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 193445 -5 1046 OE1PHS DO5SB R-07 194300 +11 443 DM8ITZ DO5SB JN59 201445 +1 2031 DO5SB DO1HO +00 201500 -8 2031 DO1HO DO5SB R+00 (x4) 201715 +5 1050 DO5SB DO1HO RR73 201730 -4 2031 DO1HO DO5SB 73 202015 -1 2906 OT8P DO5SB JN59 (x2) 222700 -18 1206 M3VNI DO5SB 73 222715 +0 879 DO5SB ON1BH -07 (x2) 222800 -13 878 ON1BH DO5SB 73
UTC dB Audio Message 193415 +3 2409 DO5SB HA1DAE -24 (x4) 194615 +9 335 DO5SB DG2RBH -20 (x5) 195900 -3 1002 DO5SB 9A2RD -12 (x2) 202930 -6 2345 DO5SB DB3OI -13 (x2) 203115 -24 1937 LZ2IP DO5SB JN59 190500 -20 2126 CQ DO5SB JN59
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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