NA4DA — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving NA4DA, decoded by SO8OO in southeastern Poland. 12 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-04 and 2026-09-08.
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 12 FT8 messages attributed to NA4DA as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (67%), followed by 40 m (33%). In this small sample, the estimated median decoder S/N was -21 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-08 01:15 UTC
Observed FT8 message patterns
- Attributed sample
- 12 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -21 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 12, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 0.
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 NA4DA in decoded directed-looking exchanges:
Most frequent locator attributed to NA4DA
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
- EL89 · 3 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,504 km (approx.)
- Last such locator decoded
- 2026-09-08 01:15 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 | NA4DA S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-08 01:17 | 40m | - / - | IW9FRA | -16 / - | 9 | Partial capture |
| 09-08 01:13 | 40m | -22 / -4 | D44TWO | -19 / -3 | 3 | Partial capture |
| 09-08 01:05 | 40m | -22 / - | TT1GD | - / -17 | 2 | Partial capture |
| 08-11 00:14 | 40m | - / -12 | YO6LM | +5 / - | 3 | ✓ Closing fragment |
| 08-09 01:42 | 80m | - / - | UA4FKT | -9 / - | 3 | Partial capture |
| 08-09 01:42 | 80m | - / - | DH1KJ | +2 / - | 2 | Partial capture |
| 08-09 01:41 | 80m | -20 / -12 | RC6OD | +4 / -18 | 5 | ✓ Full exchange observed |
| 08-09 01:38 | 80m | -24 / -17 | OM1II | +12 / - | 3 | ✓ Closing observed |
| 08-09 01:37 | 80m | -24 / -16 | LZ2KTS | +8 / - | 2 | ✓ Closing observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 001545 +4 2796 NA4DA YO6LM RR73 010545 -22 1807 TT1GD NA4DA EL89 (x2) 011315 -21 1837 D44TWO NA4DA -03 (x2) 011600 -19 1837 NA4DA D44TWO -04 011730 -16 1537 NA4DA IW9FRA JM68 (x9)
UTC dB Audio Message 013745 -24 1644 LZ2KTS NA4DA RR73 013830 +13 2656 NA4DA OM1II JN88 (x2) 013915 -24 1644 OM1II NA4DA RR73 014115 -19 1644 RC6OD NA4DA EL89 014130 +4 680 NA4DA RC6OD -12 014145 -20 1644 RC6OD NA4DA R-18 014200 +4 680 NA4DA RC6OD RR73 014200 +6 463 NA4DA DH1KJ JN48 014215 -20 1644 RC6OD NA4DA 73 014230 +6 943 NA4DA UR1CCT KN69 014230 -11 1645 NA4DA UA4FKT LO23 014230 -3 463 NA4DA DH1KJ JN48 014300 -9 1645 NA4DA UA4FKT LO23 (x2)
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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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