7K4DHB — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving 7K4DHB, decoded by SO8OO in southeastern Poland. 2 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-09 and 2026-09-17.
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 2 FT8 messages attributed to 7K4DHB as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The available sample contains attributed decodes on 80 m (50%) and 40 m (50%). The sample is too small to infer a recurring UTC-hour or received-S/N pattern.
Overview
Bands
Last attributed message: 2026-09-17 17:04 UTC
Observed FT8 message patterns
- Attributed sample
- 2 messages
- Active dates
- 2 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 7K4DHB in decoded directed-looking exchanges:
Most frequent locator attributed to 7K4DHB
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
- PM95
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,693 km (approx.)
- Last such locator decoded
- 2026-09-17 17:04 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 | 7K4DHB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-17 17:09 | 80m | - / - | IK6FWJ | +14 / - | 2 | Partial capture |
| 09-17 17:08 | 80m | - / - | OM8GT | +17 / - | 2 | Partial capture |
| 09-17 17:07 | 80m | - / - | LA9GX | +1 / - | 2 | Partial capture |
| 09-17 17:06 | 80m | - / - | UA3RMB | +2 / - | 3 | Partial capture |
| 09-17 17:06 | 80m | - / -17 | IZ8VYU | +9 / - | 3 | ✓ Closing fragment |
| 09-09 21:05 | 40m | - / - | R3SN | -1 / - | 2 | Partial capture |
| 09-09 15:36 | 40m | -11 / -8 | R3IX | -7 / - | 4 | ✓ Closing observed |
| 09-09 15:31 | 40m | - / -4 | R7DX | +5 / - | 4 | ✓ Closing fragment |
| 09-09 15:30 | 40m | - / - | PI4DX | -4 / - | 6 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 153115 -3 1118 7K4DHB PI4DX JO21 153145 +6 2783 7K4DHB R7DX KN84 153145 -4 1118 7K4DHB PI4DX JO21 153215 +4 2783 7K4DHB R7DX KN84 153215 -2 1118 7K4DHB PI4DX JO21 153245 +5 2783 7K4DHB R7DX R-04 153245 -4 1118 7K4DHB PI4DX JO21 153315 +5 2783 7K4DHB R7DX 73 153615 -11 1551 7K4DHB R3IX KO76 (x2) 153700 -11 316 R3IX 7K4DHB RR73 153715 -1 1550 7K4DHB R3IX 73 210530 +1 794 7K4DHB R3SN KO94 (x2) 131230 -9 320 7K4DHB OH3MB KP20
UTC dB Audio Message 170445 -19 576 EX7DY 7K4DHB PM95 170600 +7 2475 7K4DHB IZ8VYU JN71 170630 +7 744 7K4DHB UA3RMB LO02 170630 +13 2475 7K4DHB IZ8VYU R-17 170700 -2 744 7K4DHB UA3RMB LO02 170700 +7 2475 7K4DHB IZ8VYU 73 170730 +0 744 7K4DHB UA3RMB LO02 170730 -2 2439 7K4DHB LA9GX JO59 170830 +22 577 7K4DHB OM8GT KN08 170830 +4 2439 7K4DHB LA9GX JO59 170900 +12 577 7K4DHB OM8GT KN08 170900 +9 503 7K4DHB IK6FWJ JN63 (x3)
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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