DF9VJ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DF9VJ, decoded by SO8OO in southeastern Poland. 35 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-25 and 2026-09-12.
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 35 FT8 messages attributed to DF9VJ as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (66%), followed by 20 m (17%) and 10 m (17%). Several six-hour UTC windows tied for the largest share (89%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (71%); the estimated median was -11 dB.
Overview
Bands
Last attributed message: 2026-09-12 13:53 UTC
Observed FT8 message patterns
- Attributed sample
- 35 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- -11 dB
- Estimated 10th-90th percentile
- -15 to -5 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 25, strong (≥ -8 dB) 8.
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 DF9VJ 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 DF9VJ
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
- JO42 · 13 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 934 km (approx.)
- Last such locator decoded
- 2026-09-12 13:51 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 | DF9VJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-12 13:52 | 40m | -12 / +3 | ON1DGN | -17 / +4 | 3 | ✓ Full exchange observed |
| 09-12 13:52 | 40m | -12 / -3 | YL2TM | -6 / -22 | 6 | ✓ Full exchange observed |
| 09-12 13:49 | 40m | -11 / -8 | OE5ABL | -18 / -10 | 5 | ✓ Full exchange observed |
| 09-12 13:47 | 40m | -8 / +9 | DL6CMF | -5 / +5 | 5 | ✓ Full exchange observed |
| 09-12 13:47 | 40m | -11 / - | 2W0YOX | - / +5 | 2 | ✓ Closing fragment |
| 09-12 13:45 | 40m | -12 / +4 | PE1MHY | -12 / - | 4 | ✓ Full exchange observed |
| 09-12 13:41 | 40m | -12 / - | M8UKQ | - / +3 | 3 | ✓ Closing fragment |
| 08-30 12:10 | 20m | -5 / - | HA1BF | - / +10 | 3 | ✓ Closing fragment |
| 08-12 02:57 | 40m | -12 / - | OA4ENG | - / - | 2 | Partial capture |
| 06-25 16:13 | 10m | -14 / -10 | IZ4JMA | -6 / -2 | 7 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 134930 -15 1954 DF9VJ OE5ABL -08 134945 -11 1954 OE5ABL DF9VJ R-10 135000 -20 1595 DF9VJ OE5ABL RR73 135015 -9 1954 OE5ABL DF9VJ R-10 (x2) 135115 -12 1954 CQ DF9VJ JO42 135200 -9 532 DF9VJ YL2TM -03 135200 -17 1357 DF9VJ ON1DGN +03 135215 -13 1954 ON1DGN DF9VJ R+04 135230 -5 532 DF9VJ YL2TM -03 135245 -11 1954 ON1DGN DF9VJ 73 135300 -4 532 DF9VJ YL2TM -03 135315 -14 1954 YL2TM DF9VJ R-22 135330 -7 533 DF9VJ YL2TM RR73 135345 -11 1954 YL2TM DF9VJ 73
UTC dB Audio Message 120345 -4 2514 N3YT DF9VJ JO42 120745 -7 1155 II7MGBA DF9VJ JO42 120845 -5 1277 <...> DF9VJ 73 121045 -8 1345 HA1BF DF9VJ JO42 (x3)
UTC dB Audio Message 160845 -18 1135 CQ DF9VJ JO42 161245 -14 1023 UR5WAI DF9VJ RR73 161300 -5 704 DF9VJ IZ4JMA JN54 161315 -15 1023 IZ4JMA DF9VJ -02 161330 -3 704 DF9VJ IZ4JMA JN54 161345 -13 1023 IZ4JMA DF9VJ +00 161400 -7 704 DF9VJ IZ4JMA R-10 161415 -15 1023 IZ4JMA DF9VJ RR73 161430 -7 704 DF9VJ IZ4JMA 73 161645 -11 1151 CQ DF9VJ JO42
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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