DC4RP — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DC4RP, decoded by SO8OO in southeastern Poland. 50 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-15 and 2026-09-09.
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 50 FT8 messages attributed to DC4RP 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 (100%). In this small sample, the estimated median decoder S/N was -9 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 50 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -9 dB
- Estimated 10th-90th percentile
- -18 to -4 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 18, strong (≥ -8 dB) 22.
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 DC4RP in decoded directed-looking exchanges:
Most frequent locator attributed to DC4RP
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
- JN68 · 25 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 658 km (approx.)
- Last such locator decoded
- 2026-09-09 14:09 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 | DC4RP S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-09 14:11 | 40m | - / - | DL6REX | -16 / - | 2 | Partial capture |
| 09-09 14:09 | 40m | - / - | DL7UKM | -8 / - | 2 | Partial capture |
| 09-09 14:07 | 40m | -7 / +1 | DL4MBY | -9 / -6 | 5 | ✓ Full exchange observed |
| 09-09 14:05 | 40m | -4 / -1 | SQ3LMR | -9 / 0 | 4 | Partial capture |
| 09-09 14:03 | 40m | -8 / - | SP8CDZ | - / -2 | 3 | ✓ Closing fragment |
| 09-09 13:53 | 40m | - / - | DL7UKM | -8 / - | 2 | Partial capture |
| 09-09 13:50 | 40m | -8 / - | I6XVL | -21 / -8 | 3 | Partial capture |
| 09-09 13:47 | 40m | -3 / - | PI4DX | -4 / +6 | 5 | ✓ Full exchange observed |
| 07-10 14:21 | 40m | - / 0 | SQ3PMX | -20 / - | 2 | Partial capture |
| 07-10 14:14 | 40m | - / -19 | DL7DL | -17 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 140600 -3 1546 SQ3LMR DC4RP R+00 140630 -3 1844 CQ DC4RP JN68 (x3) 140745 -11 645 DC4RP DL4MBY JN57 140800 -6 1844 DL4MBY DC4RP -06 140815 -8 645 DC4RP DL4MBY R+01 140830 -8 1844 DL4MBY DC4RP RR73 140845 -8 645 DC4RP DL4MBY 73 140900 -7 1844 CQ DC4RP JN68 (x2) 140945 -6 1843 DC4RP DL7UKM JO62 (x2) 141115 -15 1844 DC4RP DL6REX JO40 (x2)
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