DD7DO — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DD7DO, decoded by SO8OO in southeastern Poland. 88 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-03 and 2026-09-04.
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 88 FT8 messages attributed to DD7DO as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (77%), followed by 80 m (23%). In this small sample, the estimated median decoder S/N was -3 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-04 14:30 UTC
Observed FT8 message patterns
- Attributed sample
- 88 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -3 dB
- Estimated 10th-90th percentile
- -18 to +5 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 20, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 61.
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 DD7DO in decoded directed-looking exchanges:
Most frequent locator attributed to DD7DO
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
- JO31 · 47 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,054 km (approx.)
- Last such locator decoded
- 2026-09-04 14:30 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 | DD7DO S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-04 14:28 | 40m | -14 / - | G7TVI | - / -14 | 2 | ✓ Closing fragment |
| 09-04 14:25 | 40m | -19 / - | DL9DAJ | - / -10 | 2 | ✓ Closing fragment |
| 09-04 14:23 | 40m | -18 / -10 | YL3GAO | -14 / -2 | 5 | ✓ Full exchange observed |
| 09-04 14:18 | 40m | -16 / - | OZ6NC | - / -8 | 3 | ✓ Closing fragment |
| 09-04 14:16 | 40m | -15 / - | LB9KJ | - / -13 | 2 | ✓ Closing fragment |
| 09-04 14:13 | 40m | -18 / - | M9PMB | - / -11 | 2 | Partial capture |
| 09-03 22:35 | 80m | - / - | PE1NPS | -10 / - | 3 | Partial capture |
| 09-03 22:35 | 80m | - / -11 | R2EA | -6 / - | 4 | Partial capture |
| 09-03 22:34 | 80m | +6 / -8 | PC2F | -19 / -14 | 6 | ✓ Full exchange observed |
| 09-03 22:32 | 80m | -2 / -5 | UA4FKT | +11 / -9 | 5 | ✓ Full exchange observed |
| 09-03 22:30 | 80m | -6 / - | DO8JB | -12 / -6 | 4 | ✓ Closing observed |
| 09-03 22:30 | 80m | -2 / - | 2E0ROJ | - / -15 | 2 | ✓ Closing fragment |
| 09-03 22:28 | 80m | -4 / +10 | DL3AMW | -3 / -7 | 5 | ✓ Full exchange observed |
| 09-03 22:07 | 40m | -2 / - | DJ0MAB | -6 / -13 | 9 | Partial capture |
| 09-03 22:06 | 40m | -1 / -12 | LZ2VQ | -4 / -2 | 5 | ✓ Full exchange observed |
| 09-03 22:05 | 40m | - / - | 9A3AUH | -10 / - | 2 | Partial capture |
| 09-03 22:04 | 40m | -4 / -10 | IZ8PPI | -13 / -13 | 3 | ✓ Full exchange observed |
| 09-03 22:03 | 40m | -1 / -6 | RX3ASQ | -6 / -1 | 5 | ✓ Full exchange observed |
| 09-03 22:02 | 40m | +4 / - | SP7TF | - / -9 | 2 | ✓ Closing fragment |
| 09-03 21:54 | 40m | 0 / - | DK6WH | - / - | 11 | Partial capture |
| 09-03 21:48 | 40m | +2 / - | YO6LM | - / - | 11 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 142345 -18 1304 DD7DO YL3GAO R-10 142400 -17 1303 YL3GAO DD7DO RR73 142415 -11 1304 DD7DO YL3GAO 73 142430 -16 1303 CQ DD7DO JO31 (x2) 142530 -19 1304 DL9DAJ DD7DO -10 (x2) 142630 -16 1304 CQ DD7DO JO31 (x2) 142800 -13 1304 G7TVI DD7DO -14 (x2) 142900 -20 1304 CQ DD7DO JO31 (x4)
UTC dB Audio Message 223445 -18 1258 DD7DO PC2F R-08 223500 +6 1258 PC2F DD7DO RR73 223515 -4 2336 DD7DO R2EA -11 223515 -19 1258 DD7DO PC2F 73 223545 +1 2337 DD7DO R2EA -15 223545 -8 2413 DD7DO PE1NPS JO22 223600 +6 1258 CQ DD7DO JO31 223615 -11 2412 DD7DO PE1NPS JO22 223630 +4 1259 CQ DD7DO JO31 223645 -10 2412 DD7DO PE1NPS JO22 223700 +4 1259 CQ DD7DO JO31 (x2) 223745 -13 2336 DD7DO R2EA -11 223800 +7 1258 CQ DD7DO JO31 223815 -10 2336 DD7DO R2EA -16
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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