KB8U — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EN71

Receiver-side FT8 activity involving KB8U, decoded by SO8OO in southeastern Poland. 152 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 14 UTC dates in the available aggregate history. Observed between 2026-06-16 and 2026-10-11.

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 152 FT8 messages attributed to KB8U as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (90%), followed by 80 m (9%) and 20 m (1%). Most decodes (93%) fell within the six-hour window 23:00-05:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

152
Messages attributed
14
UTC dates decoded
24
Active 15-min windows
-9 dB
Estimated median S/N

Bands

80m · 13 40m · 137 20m · 2
First attributed message: 2026-06-16
Last attributed message: 2026-10-11 00:09 UTC

Observed FT8 message patterns

Attributed sample
152 messages
Active dates
14 UTC dates
Estimated median S/N
-9 dB
Estimated 10th-90th percentile
-19 to -2 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 22, moderate (-15 to -9 dB) 66, strong (≥ -8 dB) 64.

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 KB8U 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 KB8U

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
EN71 · 70 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,607 km (approx.)
Last such locator decoded
2026-10-04 00:36 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 UTCBandKB8U S/NCounterpartCounterpart S/NMsgsCapture
10-22 05:49 40m - / -15 IS0LJG -3 / - 3 ✓ Closing fragment
10-22 05:45 40m - / - DF0KK +2 / - 4 Partial capture
10-21 01:02 80m - / -15 EB1LA -6 / - 2 ✓ Closing fragment
10-21 00:56 80m - / -18 F1PBZ +4 / - 3 Partial capture
10-21 00:56 80m - / -21 F4EGM -4 / - 7 ✓ Closing fragment
10-20 04:53 40m - / - PD0DDA -12 / - 7 Partial capture
10-20 04:49 40m - / -8 SV8EUB -6 / - 2 Partial capture
10-20 04:44 40m - / - EA5HM -15 / - 5 Partial capture
10-19 06:03 40m - / +4 G6PWS -6 / - 5 Partial capture
10-19 06:02 40m - / - DL1MEV +9 / - 2 Partial capture
10-19 06:02 40m - / - SP9OJ -9 / - 2 Partial capture
10-19 06:01 40m - / -5 PA3BUD +4 / - 3 ✓ Closing fragment
10-19 00:19 160m - / -12 PI4DX +13 / - 5 ✓ Closing fragment
10-15 22:48 40m - / -16 LB7ZG 0 / - 4 ✓ Closing fragment
10-15 22:46 40m - / -16 PA1AA -4 / - 3 ✓ Closing fragment
10-15 22:45 40m - / - CT2GQA -9 / - 3 Partial capture
10-15 22:45 40m - / - EI3CTB -8 / - 2 Partial capture
10-15 22:44 40m - / - M9XPN -2 / - 2 Partial capture
10-15 22:44 40m - / -7 F1PBZ +3 / - 2 ✓ Closing fragment
10-15 22:42 40m - / - LB7ZG +1 / - 4 Partial capture
10-15 22:36 40m - / -12 IK2UEC +15 / - 3 ✓ Closing fragment
10-15 22:32 40m - / -18 IZ8EYN -2 / - 4 ✓ Closing fragment
10-15 22:32 40m - / - MW9XET -12 / - 2 Partial capture
10-15 22:31 40m - / -18 IW2ODG -3 / - 2 Partial capture
10-14 05:34 40m - / - IT9ODQ -19 / - 3 Partial capture
10-14 05:32 40m - / - G6PWS -10 / - 7 Partial capture
10-14 05:29 40m - / -8 DK2MAX +7 / - 3 ✓ Closing fragment
10-10 04:08 40m - / -18 IK3SSW -3 / - 3 ✓ Closing fragment
10-09 14:17 10m - / -5 CT2GQA -9 / - 3 ✓ Closing fragment
10-09 06:49 40m - / - PD0WL -21 / - 3 Partial capture
10-09 06:38 40m - / -17 F8VNU -12 / - 4 ✓ Closing fragment
10-09 06:33 40m - / - ON7DJ -12 / - 2 Partial capture
10-08 07:12 80m - / -12 ON8DM -1 / - 3 ✓ Closing fragment
10-07 08:02 40m - / -17 PD1EN -19 / - 5 ✓ Closing fragment
10-07 08:01 40m - / - OT8T -8 / - 3 Partial capture
10-07 07:57 40m - / -11 DK6IM -2 / - 3 ✓ Closing fragment
10-07 07:57 40m - / - DL0PRL -8 / - 4 ✓ Closing fragment
10-07 06:06 40m - / -11 DL6NDN +1 / - 4 ✓ Closing fragment
10-07 06:02 40m - / -14 SM7HZK -8 / - 2 ✓ Closing fragment
10-07 06:01 40m - / -7 DB8BT -4 / - 4 ✓ Closing fragment
10-05 06:05 40m - / -12 IK4RVY -3 / - 3 ✓ Closing fragment
10-05 06:04 40m - / -11 DL7UHD -14 / - 3 ✓ Closing fragment
10-05 06:00 40m - / -11 F5USK +2 / - 2 Partial capture
10-05 06:00 40m - / -24 G3TKT -15 / - 8 Partial capture
10-05 05:55 40m - / -16 IZ2EWN +6 / - 5 ✓ Closing fragment
10-05 05:55 40m - / -20 LZ3BS -5 / - 2 ✓ Closing fragment
10-05 05:53 40m - / -22 IW0RLC +2 / - 2 Partial capture
10-04 00:36 80m -21 / - AA2EC - / -4 3 ✓ Closing fragment
10-04 00:31 80m -20 / - C5R - / -17 3 ✓ Closing fragment
10-04 00:30 80m -20 / - HI6M - / -21 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
071615 -24 1751  KB8U ON7DE JO20
000930 -18 1289  LU4FW KB8U 73
005600  +0 2103  KB8U F4EGM JN29
005600  +1 2705  KB8U F1PBZ -18
005630  -1 2103  KB8U F4EGM R-21
005630  +7 2705  KB8U F1PBZ -18
005700  -2 1853  KB8U F4EGM R-17
005700  +3 2705  KB8U F1PBZ -18
005730 -13 1853  KB8U F4EGM R-17 (x4)
010245  -6  830  KB8U EB1LA R-15 (x2)
064815 -18 1052  KB8U F4LZZ JN09
40m 
UTC    dB Audio  Message
045300 -18 2244  KB8U PD0DDA JO22 (x7)
054515  -9 1969  KB8U DJ1NE JN39
054515  -1  910  KB8U DF0KK JO31 (x4)
054945  +0 2782  KB8U IS0LJG JN40 (x3)
160m 
UTC    dB Audio  Message
001945 +14  945  KB8U PI4DX -12 (x5)
10m 
UTC    dB Audio  Message
141730 -14 1966  KB8U CT2GQA IM58 (x3)
20m 
UTC    dB Audio  Message
191130 -12 1859  KB8U F5NKX IN99
144300 -14 2256  KB8U F1PPH JN25
001715 -17 1901  KB8U DK1STE JN58 (x2)
001815  -4  462  KB8U IK4LZH JN54
001815 -15 1901  KB8U DK1STE JN58
001845  -5  462  KB8U IK4LZH R+03
001845 -17 1901  KB8U DK1STE JN58
001915  -2  462  KB8U IK4LZH 73
002345 -15 1901  KB8U DK1STE JN58
144345  -9  777  KB8U F6CAX 73
003800  -5 2746  KB8U TA3F (x2)
004930 -16 1406  KB8U IW5ALZ JN53 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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