DF7IS — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DF7IS, decoded by SO8OO in southeastern Poland. 10 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-07-09 and 2026-09-05.
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 10 FT8 messages attributed to DF7IS 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 (90%), followed by 80 m (10%). In this small sample, the estimated median decoder S/N was +3 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-05 18:54 UTC
Observed FT8 message patterns
- Attributed sample
- 10 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- +3 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 10.
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 DF7IS in decoded directed-looking exchanges:
Most frequent locator attributed to DF7IS
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
- JN49 · 4 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 920 km (approx.)
- Last such locator decoded
- 2026-09-05 18:52 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 | DF7IS S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-05 18:53 | 40m | +5 / +3 | DL8WO | -1 / +6 | 6 | ✓ Full exchange observed |
| 09-05 18:53 | 40m | +5 / - | IN3LHF | -4 / -4 | 3 | ✓ Closing observed |
| 09-05 18:50 | 40m | - / - | SP6FME | +1 / - | 3 | Partial capture |
| 09-05 18:48 | 40m | +3 / +5 | DK0KO | 0 / +4 | 6 | ✓ Full exchange observed |
| 07-09 02:21 | 40m | - / -6 | CR7BRV | -12 / - | 2 | ✓ Closing fragment |
| 07-09 02:20 | 40m | - / -16 | F4BYA | -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 185000 +0 2257 DF7IS DK0KO RRR 185015 +1 2862 DK0KO DF7IS 73 185030 +0 2861 DF7IS SP6FME JO90 (x3) 185245 +2 2861 CQ DF7IS JN49 185315 +6 2861 IN3LHF DF7IS R-04 185330 -4 2862 DF7IS IN3LHF RR73 185330 +1 2258 DF7IS DL8WO JO30 185345 +4 2861 IN3LHF DF7IS 73 185400 -1 2258 DF7IS DL8WO JO30 185415 +8 2861 DL8WO DF7IS +06 185430 -1 2258 DF7IS DL8WO R+03 185445 +2 2862 DL8WO DF7IS RR73 185500 -3 2258 DF7IS DL8WO 73
UTC dB Audio Message 023630 -5 2056 HB9EFK DF7IS JN49
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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