AD9DU — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving AD9DU, decoded by SO8OO in southeastern Poland. 479 FT8 messages attributed to this token as transmitter, on 20m, across 10 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-08-27.
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 479 FT8 messages attributed to AD9DU as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (74%) fell within the six-hour window 01:00-07:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 479 messages
- Active dates
- 10 UTC dates
- Estimated median S/N
- -10 dB
- Estimated 10th-90th percentile
- -17 to -5 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 64, moderate (-15 to -9 dB) 234, strong (≥ -8 dB) 181.
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 AD9DU in decoded directed-looking exchanges:
Most frequent locator attributed to AD9DU
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
- EN52 · 356 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 7,739 km (approx.)
- Last such locator decoded
- 2026-08-27 01:47 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 | AD9DU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-06 03:08 | 40m | - / -11 | BA9QQB/R | -20 / - | 2 | Partial capture |
| 10-04 06:05 | 40m | - / +7 | GJ0KYZ | -5 / - | 3 | Partial capture |
| 10-04 04:58 | 40m | - / -19 | IU1DOF | +3 / - | 7 | ✓ Closing fragment |
| 10-04 04:18 | 60m | - / +3 | PE1MHY | -7 / - | 3 | Partial capture |
| 10-04 03:54 | 80m | - / - | KY2J | -10 / - | 2 | ✓ Closing fragment |
| 10-03 03:04 | 60m | - / - | DK7UY | -6 / - | 4 | Partial capture |
| 10-02 05:54 | 40m | - / -10 | OT7K | 0 / - | 2 | ✓ Closing fragment |
| 10-02 05:23 | 40m | - / 0 | EA1CUB | -13 / - | 3 | ✓ Closing fragment |
| 10-02 05:15 | 40m | - / -15 | ON3ANY | +1 / - | 12 | ✓ Closing fragment |
| 10-02 05:08 | 40m | - / - | F4EGM | -4 / - | 2 | Partial capture |
| 10-02 02:52 | 60m | - / - | DJ2RG | -16 / - | 2 | Partial capture |
| 10-02 02:05 | 60m | - / -17 | HA5UK | -16 / - | 2 | Partial capture |
| 10-02 02:05 | 60m | - / -2 | PE1MHY | -8 / - | 3 | Partial capture |
| 10-02 02:04 | 60m | - / - | DJ2RG | +1 / - | 3 | Partial capture |
| 10-02 01:46 | 60m | - / - | G0AZH | -4 / - | 6 | Partial capture |
| 10-01 01:32 | 60m | - / +1 | PE1MHY | -2 / - | 2 | Partial capture |
| 09-30 05:22 | 80m | - / - | ON7GB | -1 / - | 2 | Partial capture |
| 09-30 02:47 | 60m | - / - | DL9KM | -17 / - | 5 | Partial capture |
| 09-30 00:40 | 60m | - / 0 | PE1MHY | +2 / - | 2 | Partial capture |
| 09-30 00:39 | 60m | - / -23 | HA1SU | +6 / - | 6 | Partial capture |
| 09-30 00:33 | 60m | - / -2 | PE1MHY | -4 / - | 2 | Partial capture |
| 09-28 03:00 | 40m | - / -10 | F1PBZ | +2 / - | 4 | Partial capture |
| 09-26 03:03 | 60m | - / -12 | F1PBZ | 0 / - | 3 | Partial capture |
| 09-25 01:11 | 40m | - / -7 | N1EN | -11 / - | 3 | Partial capture |
| 09-24 01:43 | 60m | - / -13 | F1PBZ | -10 / - | 4 | Partial capture |
| 09-23 06:13 | 60m | - / -8 | EI4KF | -6 / - | 2 | ✓ Closing fragment |
| 09-23 05:10 | 60m | - / -12 | F5OZC | -8 / - | 2 | ✓ Closing fragment |
| 09-23 04:42 | 60m | - / -7 | F5RMK | -11 / - | 10 | ✓ Closing fragment |
| 09-23 04:38 | 60m | - / - | DH1BBO | -9 / - | 13 | Partial capture |
| 09-23 04:36 | 60m | - / - | PA3BUD | +12 / - | 2 | Partial capture |
| 09-23 04:35 | 60m | - / - | YL2QG | -8 / - | 4 | Partial capture |
| 09-23 04:35 | 60m | - / - | DD7EE | -8 / - | 2 | Partial capture |
| 09-23 04:33 | 60m | - / - | DH1BBO | -13 / - | 2 | Partial capture |
| 09-23 04:31 | 60m | - / - | HB9SNR | -2 / - | 6 | Partial capture |
| 09-23 04:31 | 60m | - / -4 | MI0NWA | -8 / - | 7 | ✓ Closing fragment |
| 09-23 04:28 | 60m | - / - | PA3BUD | +4 / - | 2 | Partial capture |
| 09-23 04:26 | 60m | - / - | HB9SNR | -2 / - | 5 | Partial capture |
| 09-23 04:12 | 60m | - / -11 | IK3VUT | +2 / - | 4 | ✓ Closing fragment |
| 09-23 04:09 | 60m | - / -10 | PA4PA | +18 / - | 2 | ✓ Closing fragment |
| 09-23 04:05 | 60m | - / - | DK2CC | -7 / - | 4 | Partial capture |
| 09-23 00:29 | 60m | - / -15 | DL1OBF | +5 / - | 3 | ✓ Closing fragment |
| 09-23 00:28 | 60m | - / - | G0AZH | -7 / - | 6 | Partial capture |
| 09-22 05:54 | 60m | - / -8 | MI0NWA | -12 / - | 4 | Partial capture |
| 09-22 05:41 | 60m | - / - | DK7UY | -10 / - | 4 | Partial capture |
| 09-22 05:41 | 60m | - / - | F/PA2JWN | -12 / - | 6 | Partial capture |
| 09-22 05:40 | 60m | - / -14 | G0BLB | -2 / - | 4 | ✓ Closing fragment |
| 09-22 05:23 | 60m | - / -10 | F5MSE | -6 / - | 2 | Partial capture |
| 09-22 04:39 | 60m | - / -11 | F5MSE | -6 / - | 2 | Partial capture |
| 09-22 04:34 | 60m | - / - | OZ5TD | -6 / - | 3 | Partial capture |
| 09-22 04:14 | 60m | - / -9 | F5MSE | -2 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 055430 +0 2156 AD9DU OT7K -10 (x2) 045845 -1 1321 AD9DU IU1DOF JN34 (x7) 060545 -4 471 AD9DU GJ0KYZ +07 (x3) 030830 -19 1309 AD9DU BA9QQB/R -11 (x2) 201215 -9 479 AD9DU EA2CD IN82
UTC dB Audio Message 020545 -14 859 AD9DU PE1MHY -02 020545 -17 2137 AD9DU HA5UK -17 020545 +1 2262 AD9DU DJ2RG JO52 020615 -5 859 AD9DU PE1MHY -02 020615 -15 2137 AD9DU HA5UK -17 020645 -4 859 AD9DU PE1MHY -02 025200 -17 2256 AD9DU DJ2RG JO52 (x2) 030430 -1 589 AD9DU DK7UY JO44 (x4) 041845 -4 799 AD9DU PE1MHY +03 (x3)
UTC dB Audio Message 042100 +18 351 AD9DU DL8MKG JO52 042615 -6 1617 AD9DU IK5CHL JN53 (x3) 023200 +11 2042 AD9DU YO9IJP KN34 (x3) 035345 -8 663 AD9DU KD2ZZA FN20 (x3) 060115 -16 574 AD9DU ON8DM -16 052230 +0 1704 AD9DU ON7GB JO21 (x2) 035445 -9 569 AD9DU KY2J FN31 (x2)
UTC dB Audio Message 003530 -1 437 AD9DU W1FEA R+15 003530 -16 1208 AD9DU F1IQH JN27 003600 -3 437 AD9DU W1FEA 73 124245 +13 2575 AD9DU R6OAG KN88 (x2) 124345 -4 1792 AD9DU PD5LDB JO22 124615 -7 486 AD9DU MW7IHR IO73 (x2) 165430 -9 862 AD9DU ON5UN RR73 171645 +4 1934 AD9DU LX7I -05 (x2) 122930 -12 1174 AD9DU PD4AH JO33 123000 +4 1218 AD9DU F4MHR JN09 200515 -14 2590 AD9DU PE1LYU -15 200515 -2 936 AD9DU MW7VLB IO81
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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