KC3SDJ — 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 KC3SDJ, decoded by SO8OO in southeastern Poland. 28 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-08-25 and 2026-10-03.
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 28 FT8 messages attributed to KC3SDJ as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (86%), followed by 40 m (14%). Several six-hour UTC windows tied for the largest share (64%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.
Overview
Bands
Last attributed message: 2026-10-03 05:23 UTC
Observed FT8 message patterns
- Attributed sample
- 28 messages
- Active dates
- 5 UTC dates
- Estimated median S/N
- -13 dB
- Estimated 10th-90th percentile
- -24 to -2 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 11, strong (≥ -8 dB) 7.
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 KC3SDJ 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 KC3SDJ
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
- EN90 · 6 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 7,464 km (approx.)
- Last such locator decoded
- 2026-10-03 05:23 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 | KC3SDJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-05 06:56 | 40m | - / -15 | DF1KBN | -8 / - | 8 | Partial capture |
| 11-05 06:55 | 40m | - / - | IK1LJO | -19 / - | 3 | Partial capture |
| 11-05 06:55 | 40m | - / - | IZ0HDB | -12 / - | 3 | Partial capture |
| 11-05 06:55 | 40m | - / - | ON7DJ | -8 / - | 5 | Partial capture |
| 11-05 06:52 | 40m | - / - | IK1LJO | -11 / - | 2 | Partial capture |
| 11-02 05:41 | 40m | - / - | IU5SHJ | -11 / - | 2 | Partial capture |
| 11-02 05:40 | 40m | - / - | IK1WGX | -2 / - | 2 | Partial capture |
| 11-02 05:35 | 40m | - / -16 | LZ2IP | +6 / - | 3 | Partial capture |
| 10-26 05:44 | 40m | - / -15 | IZ5IIN | -12 / - | 2 | ✓ Closing fragment |
| 10-26 05:38 | 40m | - / -4 | R2AL | -5 / - | 5 | ✓ Closing fragment |
| 10-26 05:35 | 40m | - / - | F5VHQ | +12 / - | 2 | Partial capture |
| 10-26 05:33 | 40m | - / -8 | HB9TIH | -15 / - | 3 | ✓ Closing fragment |
| 10-26 05:32 | 40m | - / -15 | F4JCU | -8 / - | 3 | ✓ Closing fragment |
| 10-26 05:29 | 40m | - / - | R2AL | +2 / - | 4 | Partial capture |
| 10-26 05:28 | 40m | - / -4 | IU1TLG | -3 / - | 8 | ✓ Closing fragment |
| 10-26 05:27 | 40m | - / - | ON8WR | -12 / - | 2 | Partial capture |
| 10-26 05:27 | 40m | - / - | HB9TIH | -5 / - | 5 | Partial capture |
| 10-26 05:22 | 40m | - / - | PD1DBL | -9 / - | 3 | Partial capture |
| 10-26 05:21 | 40m | - / -5 | F1PBZ | +7 / - | 4 | ✓ Closing fragment |
| 10-03 05:23 | 40m | - / - | IV3DGE | -17 / - | 3 | Partial capture |
| 10-03 05:23 | 40m | - / - | F3CJ | -12 / - | 2 | Partial capture |
| 10-03 05:13 | 40m | - / -25 | SP5MXZ | 0 / - | 6 | Partial capture |
| 10-03 05:12 | 40m | - / -15 | UA3RAU | -3 / - | 2 | Partial capture |
| 10-03 05:11 | 40m | - / +7 | F5OZK | -6 / - | 3 | ✓ Closing fragment |
| 10-03 05:11 | 40m | - / -7 | PA0KGB | -16 / - | 4 | ✓ Closing fragment |
| 10-03 05:01 | 40m | - / - | G3WGC | -18 / - | 6 | Partial capture |
| 10-03 04:59 | 40m | - / -14 | UT9NA | +5 / - | 7 | ✓ Closing fragment |
| 10-03 04:58 | 40m | - / - | OH7OBJ | -12 / - | 2 | Partial capture |
| 09-21 06:16 | 40m | - / -9 | F5NBU | +2 / - | 3 | ✓ Closing fragment |
| 09-21 06:16 | 40m | - / -10 | F6FTB | -4 / - | 5 | ✓ Closing fragment |
| 09-10 05:08 | 40m | - / - | E75FM | -4 / - | 9 | Partial capture |
| 09-10 05:06 | 40m | - / -13 | R7DX | +6 / - | 4 | ✓ Closing fragment |
| 09-10 04:45 | 40m | - / - | E75FM | -1 / - | 4 | Partial capture |
| 09-10 04:45 | 40m | - / - | IZ8XJJ | -10 / - | 2 | Partial capture |
| 09-07 06:56 | 40m | - / - | IN3LTL | -10 / - | 2 | Partial capture |
| 09-07 06:53 | 40m | - / - | F1BHB | -20 / - | 2 | Partial capture |
| 09-07 06:52 | 40m | - / -19 | DK4RH | -19 / - | 3 | ✓ Closing fragment |
| 09-07 06:42 | 40m | - / - | F4LZZ | -16 / - | 2 | Partial capture |
| 09-07 06:41 | 40m | - / - | DL6LG | -7 / - | 2 | Partial capture |
| 09-07 06:41 | 40m | - / - | 9A4ZM | +2 / - | 2 | Partial capture |
| 09-07 06:38 | 40m | - / -11 | DG2EBG | -18 / - | 4 | Partial capture |
| 09-07 06:38 | 40m | - / -4 | PD0WL | -4 / - | 2 | ✓ Closing fragment |
| 09-07 06:36 | 40m | - / - | F4NJT | -17 / - | 6 | Partial capture |
| 09-07 06:33 | 40m | - / - | DL6LG | -7 / - | 2 | Partial capture |
| 09-07 06:31 | 40m | - / - | G0BLB | -6 / - | 4 | ✓ Closing fragment |
| 09-07 06:28 | 40m | - / -9 | DF5KX | -11 / - | 14 | ✓ Closing fragment |
| 09-07 06:27 | 40m | - / -3 | DL1EMV | -8 / - | 7 | ✓ Closing fragment |
| 09-07 06:27 | 40m | -24 / -3 | F4EMG | -1 / - | 4 | ✓ Closing observed |
| 09-02 05:20 | 80m | - / -7 | F6CTT | -4 / - | 2 | ✓ Closing fragment |
| 08-31 05:43 | 40m | - / - | IU1TLG | -20 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 065600 -13 2140 KC3SDJ IZ0HDB JN62 065600 -20 1652 KC3SDJ IK1LJO JN45 065630 -6 1397 KC3SDJ ON7DJ JO21 065630 -10 2140 KC3SDJ IZ0HDB JN62 065630 -20 1654 KC3SDJ IK1LJO JN45 065630 -7 1867 KC3SDJ DF1KBN -15 065700 -8 1397 KC3SDJ ON7DJ JO21 065700 -10 1867 KC3SDJ DF1KBN -15 065730 -11 1397 KC3SDJ ON7DJ JO21 065730 -8 1867 KC3SDJ DF1KBN -15 (x6)
UTC dB Audio Message 051630 +5 2810 KC3SDJ F4BYA JN19 (x3) 051900 -22 1822 KC3SDJ F5NLY JN08 (x2) 051930 +0 2809 KC3SDJ F4BYA JN19 052000 -19 1821 KC3SDJ F5NLY 73 052230 -11 1713 KC3SDJ F4GTB JN18 052230 -24 1566 KC3SDJ DO1BWS JO53 (x2) 052530 -14 1713 KC3SDJ F4GTB R-06 (x2) 052730 -4 2809 KC3SDJ F4BYA JN19 052045 -2 2603 KC3SDJ F6CTT -07 (x2)
UTC dB Audio Message 064545 -17 547 KC3SDJ IT9LCC JM78 064600 -21 1044 RY7F KC3SDJ RR73 064615 +3 2421 KC3SDJ RY7F 73 064615 -15 547 KC3SDJ IT9LCC JM78 (x3) 064715 -3 1045 KC3SDJ F5IXN JN23 064715 -12 1746 KC3SDJ F4HSB 73 064730 -18 1044 F5IXN KC3SDJ -10 064745 +4 1045 KC3SDJ F5IXN R-06 064800 -17 1044 F5IXN KC3SDJ RR73 064815 +2 1045 KC3SDJ F5IXN 73 064915 +16 675 KC3SDJ F1PBZ RR73 064945 -5 1209 KC3SDJ F1IQH JN27 065015 +6 1043 KC3SDJ PD0DDA JO22
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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