SQ9DDL — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SQ9DDL, decoded by SO8OO in southeastern Poland. 4 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-07-12.
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 4 FT8 messages attributed to SQ9DDL as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The available sample contains attributed decodes on 40 m (100%). The sample is too small to infer a recurring UTC-hour or received-S/N pattern.
Overview
Observed FT8 message patterns
- Attributed sample
- 4 messages
- Active dates
- 1 UTC dates
- S/N summary
- Too few decodes
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with SQ9DDL in decoded directed-looking exchanges:
Most frequent locator attributed to SQ9DDL
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
- JN99 · 3 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 206 km (approx.)
- Last such locator decoded
- 2026-07-12 18:53 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 | SQ9DDL S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-09 11:27 | 10m | - / -4 | TA1SW | -22 / - | 2 | ✓ Closing fragment |
| 07-26 18:24 | 10m | - / +2 | LZ1ZF | -2 / - | 2 | ✓ Closing fragment |
| 07-26 15:29 | 10m | - / -6 | F4FSY | -19 / - | 2 | Partial capture |
| 07-14 16:53 | 10m | - / - | G0UOI | -18 / - | 2 | ✓ Closing fragment |
| 07-12 18:53 | 40m | -6 / -9 | HB9EFK | -10 / -9 | 4 | ✓ Full exchange observed |
| 07-12 18:33 | 10m | - / 0 | UR9QQ | -3 / - | 3 | ✓ Closing fragment |
| 07-06 18:06 | 10m | - / -5 | ON4DS | -18 / - | 2 | ✓ Closing fragment |
| 07-06 17:59 | 10m | - / -4 | DO1FDK | -2 / - | 2 | Partial capture |
| 07-06 17:53 | 10m | - / - | DO1FDK | -2 / - | 2 | Partial capture |
| 07-06 17:53 | 10m | - / -6 | OE6CLD | -12 / - | 4 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 175930 -4 2952 SQ9DDL DO1FDK R-04 180600 -16 1598 SQ9DDL ON4DS -05 (x2) 183315 -5 738 SQ9DDL UR9QQ KN77 (x3) 165330 -21 1198 SQ9DDL G0UOI RR73 (x2) 152900 -18 1765 SQ9DDL F4FSY -06 (x2) 182415 -8 1306 SQ9DDL LZ1ZF +02 (x2) 112700 -20 1403 SQ9DDL TA1SW -04 (x2) 113100 -20 1476 SQ9DDL GJ0KYZ RR73
UTC dB Audio Message 184615 -7 2617 LX1GG SQ9DDL JN99 (x2) 185330 -5 2430 HB9EFK SQ9DDL JN99 185345 -7 2430 SQ9DDL HB9EFK -09 185400 -7 2430 HB9EFK SQ9DDL R-09 185415 -12 2430 SQ9DDL HB9EFK RR73
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee