K4WSX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EL97

Receiver-side FT8 activity involving K4WSX, decoded by SO8OO in southeastern Poland. 180 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-07-06.

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 180 FT8 messages attributed to K4WSX as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (97%), followed by 40 m (3%). Most decodes (100%) fell within the six-hour window 20:00-02:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

180
Messages attributed
9
UTC dates decoded
33
Active 15-min windows
-9 dB
Estimated median S/N

Bands

40m · 5 20m · 175
First attributed message: 2026-06-08
Last attributed message: 2026-07-06 00:01 UTC

Observed FT8 message patterns

Attributed sample
180 messages
Active dates
9 UTC dates
Estimated median S/N
-9 dB
Estimated 10th-90th percentile
-16 to -4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, moderate (-15 to -9 dB) 78, strong (≥ -8 dB) 84.

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 K4WSX 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 K4WSX

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
EL97 · 107 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,549 km (approx.)
Last such locator decoded
2026-07-06 00:01 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 UTCBandK4WSX S/NCounterpartCounterpart S/NMsgsCapture
07-06 00:01 20m -13 / - SC9WWA - / - 2 Partial capture
07-04 01:22 20m -14 / - TM8WWA - / - 2 Partial capture
07-04 01:16 20m -14 / - 5N0YEN - / -13 2 Partial capture
07-04 01:15 20m -12 / - SN2WWA - / -4 3 ✓ Closing fragment
07-04 01:10 20m -8 / - HI7WWA - / -12 3 ✓ Closing fragment
07-04 00:42 20m -12 / - DA0WWA - / -11 3 ✓ Closing fragment
07-04 00:30 20m -6 / - GB2WWA - / - 2 Partial capture
07-03 11:47 20m - / - M6BLV -12 / - 2 Partial capture
07-02 22:27 20m - / -13 II7WWA -11 / - 5 Partial capture
07-02 22:27 20m - / - F5RAV 0 / - 4 Partial capture
06-30 01:39 20m -10 / - GB2WWA - / - 2 Partial capture
06-30 01:18 40m - / -10 II3WWA -6 / - 2 Partial capture
06-30 01:01 40m - / - R2EA/P -10 / - 2 Partial capture
06-30 00:56 20m -8 / +10 TM8WWA -16 / -2 4 ✓ Full exchange observed
06-30 00:52 20m - / -7 LZ2VQ -11 / - 3 Partial capture
06-30 00:49 20m -10 / 0 HI3WWA -20 / - 3 ✓ Closing observed
06-29 21:12 20m - / -26 LZ2VQ -14 / - 4 Partial capture
06-29 21:09 20m -13 / - TM8WWA -20 / - 4 Partial capture
06-29 21:01 20m - / - IV3IBK -17 / - 16 Partial capture
06-29 20:54 20m - / - IV3IBK -18 / - 4 Partial capture
06-29 20:42 20m - / - IV3IBK -16 / - 8 Partial capture
06-29 20:42 20m - / -4 SN4WWA -18 / - 4 ✓ Closing fragment
06-29 20:40 20m -21 / -13 SN0WWA -10 / - 4 ✓ Closing observed
06-29 20:28 20m -18 / -17 CR2WWA -13 / -17 5 ✓ Full exchange observed
06-29 20:25 20m - / - TM8WWA -16 / - 2 Partial capture
06-29 20:25 20m -15 / - N8W - / -3 5 ✓ Closing fragment
06-29 20:25 20m - / -12 SN4WWA -10 / - 2 Partial capture
06-29 20:17 20m - / - M7JBJ -14 / - 3 Partial capture
06-29 12:22 20m - / -4 DK4FH -13 / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
011130  -9 1279  HI7WWA K4WSX R-12 (x2)
011230 -10 1279  GB2WWA K4WSX EL97
011245 -10 1280  SN2WWA K4WSX EL97
011415  -9 1280  5N0YEN K4WSX EL97
011545 -13 1280  SN2WWA K4WSX R-04 (x2)
011645 -12 1280  5N0YEN K4WSX R-13
011715 -13 1281  SN2WWA K4WSX 73
011815 -15 1281  5N0YEN K4WSX R-13
012045  -3  475  K4WSX VP2MAA -01
012200 -15 1282  TM8WWA K4WSX EL97 (x2)
000115 -13 1279  SC9WWA K4WSX EL97 (x2)
40m 
UTC    dB Audio  Message
010115  -9 2495  K4WSX R2EA/P KO84 (x2)
010215 -10  526  K4WSX TM8WWA +00
011830  -8  775  K4WSX II3WWA -10 (x2)
015030 -12  842  K4WSX GB2WWA -12

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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