IW4DVF — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving IW4DVF, decoded by SO8OO in southeastern Poland. 90 FT8 messages attributed to this token as transmitter, on 80m, 10m, across 2 UTC dates in the available aggregate history. Observed between 2026-07-25 and 2026-09-19.
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 90 FT8 messages attributed to IW4DVF as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (93%), followed by 80 m (7%). In this small sample, the estimated median decoder S/N was -15 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-19 21:35 UTC
Observed FT8 message patterns
- Attributed sample
- 90 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -15 dB
- Estimated 10th-90th percentile
- -18 to -11 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 33, moderate (-15 to -9 dB) 50, strong (≥ -8 dB) 7.
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 IW4DVF in decoded directed-looking exchanges:
Most frequent locator attributed to IW4DVF
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
- JN54 · 49 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,013 km (approx.)
- Last such locator decoded
- 2026-09-19 21:34 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 | IW4DVF S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-19 21:34 | 80m | +2 / +2 | M0KHR | -14 / -15 | 5 | Partial capture |
| 09-19 21:33 | 80m | - / - | RA6OY | -2 / - | 5 | Partial capture |
| 09-19 21:33 | 80m | - / - | OE9GWV | -12 / - | 6 | Partial capture |
| 09-19 20:07 | 60m | - / - | PI4TX | -14 / - | 3 | Partial capture |
| 07-25 10:41 | 10m | -13 / - | SY1AWX | - / -22 | 5 | Partial capture |
| 07-25 10:38 | 10m | -16 / - | SY1AWX | - / -22 | 2 | Partial capture |
| 07-25 10:28 | 10m | -15 / - | G0ACQ | - / -12 | 2 | ✓ Closing fragment |
| 07-25 10:23 | 10m | -15 / - | DO1OAS | - / -16 | 2 | ✓ Closing fragment |
| 07-25 10:18 | 10m | -14 / - | DN9SGE | - / -7 | 3 | ✓ Closing fragment |
| 07-25 10:16 | 10m | -13 / -6 | DL3MIB | -4 / -17 | 7 | ✓ Full exchange observed |
| 07-25 09:26 | 10m | -13 / - | HA6ZX | - / -16 | 3 | Partial capture |
| 07-25 09:21 | 10m | -14 / - | PD1HPB | - / -7 | 2 | ✓ Closing fragment |
| 07-25 09:18 | 10m | -18 / -3 | OZ5AGJ | -18 / -14 | 6 | ✓ Full exchange observed |
| 07-25 09:13 | 10m | -16 / - | G0JEI | - / -3 | 2 | ✓ Closing fragment |
| 07-25 09:08 | 10m | -14 / - | LA7DMA | - / -13 | 2 | ✓ Closing fragment |
| 07-25 09:01 | 10m | -17 / -6 | OZ5AGJ | -20 / -18 | 5 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 213345 -9 2655 IW4DVF OE9GWV JN47 213400 +4 1292 CQ IW4DVF JN54 213415 +1 215 IW4DVF RA6OY KN88 213415 -14 2655 IW4DVF OE9GWV JN47 213415 -15 1329 IW4DVF M0KHR IO91 213430 +3 1292 M0KHR IW4DVF -15 213445 -3 215 IW4DVF RA6OY KN88 213445 -11 2655 IW4DVF OE9GWV JN47 213445 -12 1329 IW4DVF M0KHR R+02 213500 +2 1292 M0KHR IW4DVF -15 213515 -2 215 IW4DVF RA6OY KN88 213515 -16 2655 IW4DVF OE9GWV JN47 213530 +1 1292 M0KHR IW4DVF -15 213545 -6 215 IW4DVF RA6OY KN88 213545 -10 2655 IW4DVF OE9GWV JN47
UTC dB Audio Message 200745 -12 2280 IW4DVF PI4TX JO22 (x3)
UTC dB Audio Message 102915 -14 1305 G0ACQ IW4DVF RR73 103345 -16 1305 CQ IW4DVF JN54 (x6) 103815 -16 1304 SY1AWX IW4DVF -22 103830 -7 2688 IW4DVF DN9BLN JO62 103915 -15 1304 SY1AWX IW4DVF -22 (x6)
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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