KB3UKW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FN20

Receiver-side FT8 activity involving KB3UKW, decoded by SO8OO in southeastern Poland. 110 FT8 messages attributed to this token as transmitter, on 20m, across 13 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-28.

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 110 FT8 messages attributed to KB3UKW as the transmitting token by decoded message structure across 13 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. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

110
Messages attributed
13
UTC dates decoded
23
Active 15-min windows
-11 dB
Estimated median S/N

Bands

20m · 110
First attributed message: 2026-06-07
Last attributed message: 2026-08-28 21:18 UTC

Observed FT8 message patterns

Attributed sample
110 messages
Active dates
13 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-21 to -1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 24, moderate (-15 to -9 dB) 53, strong (≥ -8 dB) 33.

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 KB3UKW 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 KB3UKW

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
FN20 · 94 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,111 km (approx.)
Last such locator decoded
2026-08-28 21:18 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 UTCBandKB3UKW S/NCounterpartCounterpart S/NMsgsCapture
09-07 00:31 80m - / -10 EA1AIQ +1 / - 2 ✓ Closing fragment
08-28 21:17 20m -14 / - EP2AES - / - 2 Partial capture
08-20 22:37 20m -12 / - XE1TZP - / - 2 Partial capture
08-19 01:13 40m - / -15 F5NBU -3 / - 5 Partial capture
08-08 00:59 40m - / -19 9K2GR -19 / - 4 ✓ Closing fragment
08-02 00:56 80m - / -13 TF3VS 0 / - 2 ✓ Closing fragment
08-01 01:37 20m - / -9 9K2OK -18 / - 2 ✓ Closing fragment
07-31 22:16 20m -11 / - 6Y5PW - / - 3 Partial capture
07-30 01:03 40m - / - R2AL -10 / - 4 Partial capture
07-30 00:39 40m - / - R2AL -7 / - 3 Partial capture
07-28 00:22 20m -24 / -12 EC5M +1 / -9 3 ✓ Full exchange observed
07-28 00:18 20m -23 / - 7Z1BQ - / - 5 Partial capture
07-23 03:15 20m - / - UB3GER -14 / - 2 Partial capture
07-21 00:30 20m -18 / - 7Z1BQ - / - 2 Partial capture
07-21 00:27 20m -14 / - K0EAP - / - 2 Partial capture
07-21 00:23 20m -12 / - G8IHT - / - 4 Partial capture
07-21 00:22 20m -10 / - EI2KP - / - 2 Partial capture
07-15 01:22 40m - / -9 A71XX -12 / - 2 ✓ Closing fragment
07-13 19:24 20m - / - PD0LH -20 / - 2 Partial capture
07-13 19:16 20m - / - PD3FJJ -12 / - 6 Partial capture
07-07 01:46 40m - / -16 F4FPR -22 / - 3 Partial capture
07-07 01:21 20m - / -7 IQ4JO -7 / - 2 ✓ Closing fragment
07-07 01:12 20m - / - SP5EXA -18 / - 3 Partial capture
07-07 01:06 20m - / -14 DL1R +4 / - 6 ✓ Closing fragment
07-07 01:04 20m - / - DK9ZQ -8 / - 2 Partial capture
07-07 00:57 20m - / -16 ON3MB -8 / - 2 ✓ Closing fragment
07-07 00:53 20m - / -16 ON1JP -21 / - 2 Partial capture
07-07 00:41 40m - / - SM3ULU -13 / - 2 Partial capture
07-06 03:01 40m - / -15 <...> -23 / - 3 Partial capture
07-05 15:05 20m - / - RA3SI -10 / - 2 ✓ Closing fragment
06-27 01:07 20m - / -14 4Z5PT -16 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
010315  -4 1358  KB3UKW R2AL KO85 (x4)
005900 -20 1858  KB3UKW 9K2GR -19 (x4)
011315  -3 1626  KB3UKW F5NBU JN28 (x5)
011530 -15 2206  KB3UKW KS1WK RR73
001530  -1  692  KB3UKW VP2MAA RR73
80m 
UTC    dB Audio  Message
005630  -1 1329  KB3UKW TF3VS -13 (x2)
003100  -1 2482  KB3UKW EA1AIQ R-10 (x2)
20m 
UTC    dB Audio  Message
213745 -24 1673  KD5QJQ KB3UKW FN20
220645 -21 1876  KM7GZN KB3UKW 73
221115 -18 1875  W7ISP KB3UKW FN20
221615 -15 2102  6Y5PW KB3UKW FN20 (x3)
013730 -19 1576  KB3UKW 9K2OK -09 (x2)
223345  -9  674  N0WRL KB3UKW FN20
223730 -12  673  XE1TZP KB3UKW FN20 (x2)
013345 -24 1823  W6IWW KB3UKW R-11
211430 -10  791  W9EMM KB3UKW FN20
211700 -13  791  EP2AES KB3UKW FN20 (x2)

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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