N1DCH — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving N1DCH, decoded by SO8OO in southeastern Poland. 6 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-17 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 6 FT8 messages attributed to N1DCH 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 (83%), followed by 20 m (17%). In this small sample, the estimated median decoder S/N was -17 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-12 00:51 UTC
Observed FT8 message patterns
- Attributed sample
- 6 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -17 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 2, 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 N1DCH in decoded directed-looking exchanges:
Most frequent locator attributed to N1DCH
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
- FN42 · 3 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 6,716 km (approx.)
- Last such locator decoded
- 2026-09-12 00:47 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 | N1DCH S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-12 01:29 | 40m | - / -14 | IW9FRA | -9 / - | 9 | ✓ Closing fragment |
| 09-12 01:27 | 40m | - / - | DK7UY | -14 / - | 3 | Partial capture |
| 09-12 01:11 | 40m | - / -18 | DL8HXP | -5 / - | 8 | Partial capture |
| 09-12 01:01 | 40m | - / - | UX5UW | +3 / - | 4 | Partial capture |
| 09-09 01:30 | 40m | - / -18 | WE8HAM | -18 / - | 2 | Partial capture |
| 09-09 01:26 | 40m | - / - | 5Z4VJ | -6 / - | 3 | Partial capture |
| 07-22 01:02 | 40m | - / -18 | R6LIG | -15 / - | 2 | Partial capture |
| 07-15 00:26 | 20m | - / -7 | RN6MA | -12 / - | 2 | ✓ Closing fragment |
| 07-15 00:01 | 40m | - / -9 | TF8SM | -6 / - | 2 | ✓ Closing fragment |
| 07-08 00:04 | 80m | - / -1 | K2D | -20 / - | 2 | ✓ Closing fragment |
| 07-07 23:00 | 40m | - / -24 | <...> | -18 / - | 2 | Partial capture |
| 07-07 22:59 | 40m | - / -24 | GB13COL | -18 / - | 2 | Partial capture |
| 06-30 01:13 | 40m | - / - | EG4WWA | -16 / - | 4 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 011545 -5 2235 N1DCH DL8HXP -18 012715 -17 2235 N1DCH DK7UY JO44 012745 -3 1475 N1DCH M9XPN IO91 012745 -12 2237 N1DCH DK7UY JO44 012815 -14 2236 N1DCH UX1VT KN68 012845 -13 2236 N1DCH DK7UY JO44 012915 -16 1207 N1DCH IW9FRA JM68 (x9)
UTC dB Audio Message 120945 -20 1980 N1DCH GB13COL R-25 002615 -14 2270 N1DCH RN6MA -07 (x2)
UTC dB Audio Message 000400 -21 1401 N1DCH K2D -01 (x2)
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