KC1WSJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FN43

Receiver-side FT8 activity involving KC1WSJ, decoded by SO8OO in southeastern Poland. 58 FT8 messages attributed to this token as transmitter, on 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-08-27.

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 58 FT8 messages attributed to KC1WSJ as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (72%); the estimated median was -18 dB.

Overview

58
Messages attributed
8
UTC dates decoded
12
Active 15-min windows
-18 dB
Estimated median S/N

Bands

20m · 58
First attributed message: 2026-06-11
Last attributed message: 2026-08-27 22:34 UTC

Observed FT8 message patterns

Attributed sample
58 messages
Active dates
8 UTC dates
Estimated median S/N
-18 dB
Estimated 10th-90th percentile
-23 to -12 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 42, moderate (-15 to -9 dB) 15, strong (≥ -8 dB) 1.

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 KC1WSJ 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 KC1WSJ

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
FN43 · 28 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
6,642 km (approx.)
Last such locator decoded
2026-08-25 23:03 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 UTCBandKC1WSJ S/NCounterpartCounterpart S/NMsgsCapture
09-17 22:37 40m - / -13 DK5WL -17 / - 5 ✓ Closing fragment
09-17 22:35 40m - / - F6BHK -3 / - 2 Partial capture
09-17 22:33 40m - / - IZ4AFM -9 / - 4 Partial capture
09-17 22:32 40m - / -5 F5NBU +12 / - 4 ✓ Closing fragment
09-17 22:31 40m - / -9 DK7ZT -12 / - 3 Partial capture
09-13 22:36 40m - / -14 DK7ZT -11 / - 3 Partial capture
09-13 22:36 40m - / -9 F4BYA +2 / - 3 ✓ Closing fragment
09-13 22:23 40m - / -10 G0IUS -10 / - 3 Partial capture
09-13 21:27 40m - / - DL1UDO -14 / - 2 Partial capture
09-06 21:33 40m - / - F5PBG -6 / - 4 Partial capture
09-06 21:31 40m - / -16 LB7ZG +8 / - 3 ✓ Closing fragment
08-30 22:32 20m - / - EB3JT -10 / - 4 Partial capture
08-30 22:26 20m - / - IK0QDM -14 / - 5 Partial capture
08-30 22:25 20m - / -15 OK2CNI 0 / - 2 ✓ Closing fragment
08-30 22:09 20m - / - CT2KCK +2 / - 2 Partial capture
08-27 22:31 20m - / - MW1CFA -14 / - 2 Partial capture
08-25 22:58 20m -18 / - AC9VM - / 0 4 Partial capture
08-25 22:54 20m -18 / - <...> - / -12 5 Partial capture
08-25 22:51 20m -22 / - SP6GCU - / -9 2 Partial capture
08-25 22:41 20m - / -12 KE2FSC -16 / - 3 ✓ Closing fragment
08-25 22:28 20m -24 / - AC9VM - / +2 2 Partial capture
08-25 22:25 20m -18 / -20 EA4IDN -3 / -4 8 ✓ Full exchange observed
08-25 22:21 20m -17 / - DF3JO - / -6 5 Partial capture
08-23 23:40 20m - / -14 CR7BUJ +2 / - 2 ✓ Closing fragment
08-23 23:33 20m -14 / - WD4FJF - / - 2 Partial capture
08-13 23:07 20m - / - EA7GZQ -4 / - 2 Partial capture
08-12 00:01 20m - / -4 HA1BF -8 / - 7 Partial capture
08-11 23:49 20m - / -13 DF3VG -12 / - 3 ✓ Closing fragment
08-09 22:44 20m - / - R7DX +2 / - 3 Partial capture
07-31 15:09 20m - / -18 F1ODM -12 / - 4 Partial capture
07-29 22:29 20m - / - EA1IOK -8 / - 2 Partial capture
07-29 22:23 20m - / -18 EA4T -18 / - 2 Partial capture
07-26 21:37 20m - / - DL1R -1 / - 8 Partial capture
07-16 23:31 20m - / - EA1IOK -10 / - 3 Partial capture
07-14 23:28 20m - / - R7BN -13 / - 3 Partial capture
06-28 18:46 20m - / - IU3MAG +1 / - 4 Partial capture
06-28 00:10 20m - / - SP6AXW -2 / - 5 Partial capture
06-28 00:07 20m - / -12 OD5KU +2 / - 3 ✓ Closing fragment
06-27 21:56 20m - / - EA1IOK -8 / - 3 Partial capture
06-25 23:14 20m - / - R7BN -16 / - 6 Partial capture
06-24 23:31 20m - / - EA3HMM -6 / - 4 Partial capture
06-24 23:07 20m - / - HB9TIH -18 / - 3 Partial capture
06-24 23:06 20m - / - UR4QWW -23 / - 4 Partial capture
06-24 23:01 20m - / - EA3HMM -15 / - 3 Partial capture
06-23 18:01 20m - / - PA3DHR -1 / - 4 Partial capture
06-21 23:53 20m - / - EA1IOK -8 / - 2 Partial capture
06-21 22:18 20m - / - EB5DFU -10 / - 4 Partial capture
06-21 21:49 20m - / - EA1CQ -14 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

40m 
UTC    dB Audio  Message
223315 +16 3139  KC1WSJ F5NBU R-05
223345  -4  249  KC1WSJ IZ4AFM JN64
223345 +13 3139  KC1WSJ F5NBU R-05
223415  -7  249  KC1WSJ IZ4AFM JN64
223415 +12 3139  KC1WSJ F5NBU 73
223445 -12  249  KC1WSJ IZ4AFM JN64 (x2)
223515  -2 3138  KC1WSJ F6BHK JN24 (x2)
223745 -15 1845  KC1WSJ DK5WL JN39 (x5)
224145 -15 1907  KC1WSJ DK7ZT RR73
20m 
UTC    dB Audio  Message
223200 -13 3056  KC1WSJ MW1CFA IO73
223445 -12 3056  MW1CFA KC1WSJ RRR
220900  +3 1037  KC1WSJ CT2KCK IM59 (x2)
222545  +9 2400  KC1WSJ OK2CNI -15 (x2)
222615 -15 1308  KC1WSJ IK0QDM JN61 (x5)
223215 -11  719  KC1WSJ EB3JT JN01 (x4)

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.

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