SQ9DDH — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving SQ9DDH, decoded by SO8OO in southeastern Poland. 118 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-07-18 and 2026-10-31.
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 118 FT8 messages attributed to SQ9DDH as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (71%), followed by 40 m (22%) and 20 m (7%). Most decodes (63%) fell within the six-hour window 22:00-04:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (86%); the estimated median was +9 dB.
Overview
Bands
Last attributed message: 2026-10-31 05:20 UTC
Observed FT8 message patterns
- Attributed sample
- 118 messages
- Active dates
- 5 UTC dates
- Estimated median S/N
- +9 dB
- Estimated 10th-90th percentile
- -16 to +15 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 101.
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 SQ9DDH in decoded directed-looking exchanges:
Most frequent locator attributed to SQ9DDH
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 · 43 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 206 km (approx.)
- Last such locator decoded
- 2026-07-26 07:38 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 | SQ9DDH S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-07 10:21 | 40m | - / -12 | YO2UKG | +8 / - | 2 | ✓ Closing fragment |
| 11-07 10:08 | 40m | - / -21 | SP7VCL | -6 / - | 2 | ✓ Closing fragment |
| 11-07 08:52 | 40m | - / -11 | SP5CGN | -19 / - | 3 | ✓ Closing fragment |
| 11-07 07:57 | 40m | - / -14 | YO3RU | -4 / - | 2 | ✓ Closing fragment |
| 11-07 07:33 | 80m | - / -16 | SP8WB | +6 / - | 6 | Partial capture |
| 10-31 10:46 | 10m | - / -25 | EA1RCU | +2 / - | 5 | ✓ Closing fragment |
| 10-31 10:22 | 10m | - / -14 | UN7LZ | -6 / - | 2 | ✓ Closing fragment |
| 10-31 10:11 | 10m | - / -13 | RA9ACA | -6 / - | 2 | ✓ Closing fragment |
| 10-31 05:17 | 80m | -20 / -15 | PE2JMR | +3 / -17 | 5 | ✓ Full exchange observed |
| 10-31 04:59 | 80m | - / -24 | OK1AY | +7 / - | 7 | Partial capture |
| 10-31 04:56 | 80m | - / -22 | 9A2G | +16 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 075730 -2 2081 SQ9DDH YO3RU -14 (x2) 085245 -22 2016 SQ9DDH SP5CGN -11 (x3) 100800 -3 1655 SQ9DDH SP7VCL -21 (x2) 102145 +8 514 SQ9DDH YO2UKG -12 (x2)
UTC dB Audio Message 050230 +9 2033 SQ9DDH OK1AY -24 051745 +7 696 SQ9DDH PE2JMR -15 (x4) 052000 -20 697 PE2JMR SQ9DDH R-17 052230 -4 2088 SQ9DDH SQ9PCH -16 052645 +9 1994 SQ9DDH DA125RH -18 073215 +6 1746 SQ9DDH SQ9AQQ RR73 073315 +6 1081 SQ9DDH SP8WB -16 (x6)
UTC dB Audio Message 101115 -6 1743 SQ9DDH RA9ACA -13 (x2) 102200 -7 790 SQ9DDH UN7LZ -14 (x2) 104615 +1 2545 SQ9DDH EA1RCU IN72 (x5)
CW
No CW receptions recorded for this callsign in the last 30 days.
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