RJ3DC — 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 RJ3DC, decoded by SO8OO in southeastern Poland. 7,520 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 28 UTC dates in the available aggregate history. Observed between 2026-08-04 and 2026-11-05.
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 7,520 FT8 messages attributed to RJ3DC as the transmitting token by decoded message structure across 28 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (37%), followed by 40 m (32%) and 80 m (28%). The busiest six-hour window was 16:00-22:00 UTC, containing 48% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8.7 dB.
Overview
Bands
Last attributed message: 2026-11-05 04:11 UTC
Observed FT8 message patterns
- Attributed sample
- 7,520 messages
- Active dates
- 28 UTC dates
- Estimated median S/N
- -8.7 dB
- Estimated 10th-90th percentile
- -17.5 to +0.3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1,203, moderate (-15 to -9 dB) 2,579, strong (≥ -8 dB) 3,738.
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.
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with RJ3DC in decoded directed-looking exchanges:
Attributed messages by UTC hour
Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.
Most frequent locator attributed to RJ3DC
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
- KO95 · 5,185 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,309 km (approx.)
- Last such locator decoded
- 2026-11-05 04:08 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 | RJ3DC S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-05 04:03 | 80m | -16 / -3 | SP3DOF | 0 / -10 | 14 | ✓ Full exchange observed |
| 11-05 03:55 | 80m | - / -14 | R1BDX | -24 / - | 2 | Partial capture |
| 11-05 03:54 | 80m | - / - | RU3XK | -7 / - | 6 | Partial capture |
| 11-05 03:48 | 80m | -6 / - | RU3XK | - / -16 | 5 | ✓ Closing fragment |
| 11-05 03:46 | 80m | -10 / - | DO1ID | - / - | 3 | Partial capture |
| 11-05 03:45 | 80m | - / -14 | UA6EU | -7 / - | 2 | ✓ Closing fragment |
| 11-05 03:43 | 80m | - / -13 | SV1ENG | -4 / - | 3 | ✓ Closing fragment |
| 11-05 03:38 | 80m | -12 / - | IU8SDA | - / - | 2 | Partial capture |
| 11-05 03:32 | 80m | -16 / - | DO1ID | - / - | 2 | Partial capture |
| 11-05 03:27 | 80m | -15 / - | DO1ID | - / - | 4 | Partial capture |
| 11-05 03:24 | 80m | -17 / -18 | EC3A | -11 / -16 | 7 | ✓ Full exchange observed |
| 11-05 03:12 | 80m | - / -8 | R2WAF | +1 / - | 2 | ✓ Closing fragment |
| 11-05 03:09 | 80m | -5 / -6 | SQ6ELK | +4 / -14 | 5 | ✓ Full exchange observed |
| 11-05 03:07 | 80m | -17 / -12 | UA6BGM | 0 / -10 | 5 | ✓ Full exchange observed |
| 11-05 02:59 | 80m | -17 / - | RU6LC | - / -9 | 3 | ✓ Closing fragment |
| 11-05 02:58 | 80m | -17 / - | EC3A | - / - | 3 | Partial capture |
| 11-05 02:54 | 80m | - / -7 | CT2KNA | -16 / - | 2 | Partial capture |
| 11-05 02:38 | 80m | - / -13 | CT2KNA | -22 / - | 4 | Partial capture |
| 11-05 02:32 | 80m | - / -10 | 4L1FL | -10 / - | 4 | Partial capture |
| 11-05 02:27 | 80m | - / -8 | CT2KNA | -18 / - | 7 | Partial capture |
| 11-05 02:06 | 80m | -9 / -16 | DO2PY | -1 / -14 | 5 | ✓ Full exchange observed |
| 11-05 01:58 | 80m | -8 / -6 | DL1DBR | -10 / -18 | 6 | ✓ Full exchange observed |
| 11-05 01:53 | 80m | - / -9 | IZ0MIT | -5 / - | 2 | Partial capture |
| 11-05 01:50 | 80m | - / - | DO1OAS | -6 / - | 2 | Partial capture |
| 11-05 01:44 | 80m | - / -14 | IZ0MIT | -3 / - | 2 | Partial capture |
| 11-05 01:40 | 80m | -11 / -6 | M0LOW | -14 / - | 4 | Partial capture |
| 11-05 01:36 | 80m | - / - | OH6IH | -8 / - | 2 | Partial capture |
| 11-05 01:28 | 80m | -23 / - | IQ4JO | +1 / -6 | 2 | ✓ Closing observed |
| 11-05 01:19 | 80m | -9 / - | F4BND | - / -24 | 3 | Partial capture |
| 11-05 01:10 | 80m | - / - | R8CEC | -6 / - | 3 | ✓ Closing fragment |
| 11-05 01:07 | 80m | +3 / - | CT2KNA | - / - | 2 | Partial capture |
| 11-05 01:03 | 80m | -6 / - | GB1RBL | - / -20 | 2 | Partial capture |
| 11-05 01:03 | 80m | -1 / -15 | R9HAG | -9 / - | 2 | Partial capture |
| 11-05 00:55 | 80m | -13 / - | DC6REH | 0 / -11 | 4 | ✓ Closing observed |
| 11-05 00:31 | 80m | -12 / - | EA8AR | - / -13 | 2 | ✓ Closing fragment |
| 11-05 00:27 | 80m | -17 / -12 | CT2KNA | -22 / -17 | 4 | Partial capture |
| 11-05 00:16 | 80m | - / - | DO1OAS | -2 / - | 3 | Partial capture |
| 11-05 00:07 | 80m | - / - | DO1OAS | -4 / - | 5 | Partial capture |
| 11-04 23:58 | 80m | -4 / - | E75CC | +19 / -2 | 3 | ✓ Closing observed |
| 11-04 23:58 | 80m | - / - | ON4MAP | -11 / - | 4 | Partial capture |
| 11-04 23:52 | 80m | - / - | DO1OAS | +1 / - | 6 | Partial capture |
| 11-04 23:48 | 80m | -3 / -5 | LA2JLA | -1 / -14 | 5 | ✓ Full exchange observed |
| 11-04 23:48 | 80m | - / -14 | I5HLK | +12 / - | 2 | Partial capture |
| 11-04 23:29 | 80m | - / -17 | PC40EUDXF | +1 / - | 7 | Partial capture |
| 11-04 23:09 | 80m | - / 0 | M6XZD | -6 / - | 3 | ✓ Closing fragment |
| 11-04 23:03 | 80m | -2 / - | R9SBQ | - / -18 | 2 | ✓ Closing fragment |
| 11-04 23:00 | 80m | - / -8 | M6XZD | -11 / - | 4 | Partial capture |
| 11-04 22:57 | 80m | -6 / -6 | IK6CLX | +4 / -18 | 5 | ✓ Full exchange observed |
| 11-04 22:49 | 80m | - / -6 | CT2KNA | -18 / - | 3 | Partial capture |
| 11-04 22:45 | 80m | -13 / - | EA8UP | - / -15 | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 040330 -14 1734 SP3DOF RJ3DC KO95 040345 -10 1627 RJ3DC SP3DOF -03 (x8) 040830 -18 1734 DO1ID RJ3DC KO95 040915 +1 1627 RJ3DC SP3DOF -03 (x2) 041030 -18 1734 SP3DOF RJ3DC R-10 041045 +2 1627 RJ3DC SP3DOF RR73 041100 -16 1734 SP3DOF RJ3DC 73
UTC dB Audio Message 015215 -9 1452 DO1MER RJ3DC KO95 015515 -2 1452 R8FB RJ3DC KO95 015530 -7 400 RJ3DC R8FB +05 015545 -1 1452 R8FB RJ3DC R-05 (x2) 033045 -5 1452 IZ0BVU RJ3DC KO95 033100 +8 2295 RJ3DC IZ0BVU -14 033115 -3 1452 IZ0BVU RJ3DC R-23 033130 +8 2295 RJ3DC IZ0BVU RR73 033145 -4 1452 IZ0BVU RJ3DC 73 152615 -18 1732 CQ RJ3DC KO95 (x3) 152945 -19 1732 EW6CY RJ3DC KO95 (x2)
UTC dB Audio Message 100400 -9 832 RJ3DC OD5ZZ RR73 102045 -10 1608 RJ3DC EA5CZL IM98 105145 -19 1548 RJ3DC EB2EMZ IN83 105715 -16 1949 RJ3DC EA1EBS -15 (x2) 115330 -11 739 RJ3DC EA5BF -04 (x2) 115500 -12 1097 RJ3DC EA5AMI -15 (x2) 124215 -16 1494 RJ3DC IT9PQO RR73 135830 -22 1689 RJ3DC EC7R +00 135900 -18 1407 RJ3DC F4GWO +13 135900 -20 1689 RJ3DC EC7R +00 135930 -22 1408 RJ3DC F4GWO RR73 140030 -17 1689 RJ3DC EC7R -01
UTC dB Audio Message 171615 -5 1491 IU1QXO RJ3DC R-23 171715 -3 1491 CQ RJ3DC KO95 (x4) 171915 -8 1491 IK0CHU RJ3DC KO95 (x2) 172045 -11 1491 CQ RJ3DC KO95 (x5) 172400 -13 1491 RJ3DC DL8ATI JO50 172500 -6 1491 OM2DSW RJ3DC KO95 172530 -7 1491 OK1PBB RJ3DC KO95
UTC dB Audio Message 093445 -15 1287 RJ3DC RA6OV 73 102245 -4 717 RJ3DC SP2SGZ -03 (x2) 102915 -16 1590 RJ3DC YO4FZV -09 102915 -19 2353 RJ3DC G4DBW R-13 102945 -13 1590 RJ3DC YO4FZV KN44 (x2) 103330 -21 2234 UN7IV RJ3DC KO95 104615 -9 1676 RJ3DC 9A3PV +11 (x2) 112315 -11 2625 <...> RJ3DC KO95 (x2) 115600 -6 2429 RJ3DC DK1AJ -19 (x2) 120230 -18 1627 RJ3DC DL5MKR -01
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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