K4KWZ — 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: EM93

Receiver-side FT8 activity involving K4KWZ, decoded by SO8OO in southeastern Poland. 426 FT8 messages attributed to this token as transmitter, on 20m, across 15 UTC dates in the available aggregate history. Observed between 2026-06-21 and 2026-08-26.

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 426 FT8 messages attributed to K4KWZ as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). 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 -15 dB.

Overview

426
Messages attributed
15
UTC dates decoded
52
Active 15-min windows
-15 dB
Estimated median S/N

Bands

20m · 426
First attributed message: 2026-06-21
Last attributed message: 2026-08-26 00:03 UTC

Observed FT8 message patterns

Attributed sample
426 messages
Active dates
15 UTC dates
Estimated median S/N
-15 dB
Estimated 10th-90th percentile
-21 to -5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 198, moderate (-15 to -9 dB) 161, strong (≥ -8 dB) 67.

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 K4KWZ 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 K4KWZ

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
EM93 · 211 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,042 km (approx.)
Last such locator decoded
2026-08-26 00:03 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 UTCBandK4KWZ S/NCounterpartCounterpart S/NMsgsCapture
10-18 13:50 10m - / -2 DN9MSG -3 / - 4 Partial capture
10-13 13:58 10m - / -7 EA7L -10 / - 8 Partial capture
10-06 23:54 40m - / - DK5WL +5 / - 3 Partial capture
10-06 23:54 40m - / - DL3MIB +6 / - 7 Partial capture
10-06 21:35 40m - / -16 CT3HU -12 / - 4 ✓ Closing fragment
10-05 02:01 40m - / -19 IT9CCB -11 / - 3 ✓ Closing fragment
10-05 00:27 40m - / - UR9QQ -16 / - 2 Partial capture
10-04 03:03 40m - / 0 HK3YL -22 / - 2 ✓ Closing fragment
09-16 03:19 40m - / -11 EA5HM -13 / - 3 ✓ Closing fragment
09-16 03:17 40m - / - EA3ISZ -18 / - 2 Partial capture
09-16 02:58 40m - / -4 KB3Z -6 / - 2 ✓ Closing fragment
08-26 15:13 20m - / - IK4LZH -1 / - 2 Partial capture
08-26 15:06 20m - / - F4EGM 0 / - 2 Partial capture
08-25 23:46 20m - / - WA4LQS -18 / - 6 Partial capture
08-25 23:30 20m -3 / - OY1HJ - / -2 47 Partial capture
08-25 23:27 20m -12 / -5 KE2FSC -7 / +1 5 ✓ Full exchange observed
08-25 23:23 20m -12 / - F4VTR -16 / -14 4 ✓ Closing observed
08-25 23:23 20m - / - N3TBB -4 / - 2 Partial capture
08-25 23:22 20m - / - N3GTY -5 / - 5 Partial capture
08-25 21:28 20m - / - G1ROK -20 / - 4 Partial capture
08-25 21:23 20m - / - K1SM -4 / - 2 ✓ Closing fragment
08-25 21:20 20m - / -16 M9KER +2 / - 2 Partial capture
08-25 21:04 20m -4 / - ON3BEN - / -6 2 ✓ Closing fragment
08-25 21:03 20m - / - EA6ANX +2 / - 4 Partial capture
08-25 21:03 20m - / - W3SAL -2 / - 2 Partial capture
08-25 21:01 20m -10 / - W4KWS - / +8 2 ✓ Closing fragment
08-25 12:49 20m - / - PD9OH -1 / - 3 Partial capture
08-23 20:47 80m - / - YO3HUI +5 / - 2 Partial capture
08-23 03:39 40m - / - DL3MIB -8 / - 6 Partial capture
08-23 03:27 40m - / -16 ES2AJ -4 / - 3 Partial capture
08-23 03:00 40m - / - F4VTR +2 / - 5 Partial capture
08-23 02:51 40m - / - EA5HM -9 / - 5 Partial capture
08-23 02:47 40m - / - EA5XA -11 / - 3 Partial capture
08-23 02:20 40m - / - EA5XA -11 / - 4 Partial capture
08-20 15:56 20m - / -16 F8AEJ -9 / - 3 Partial capture
08-20 00:32 40m - / - CT7AUT -9 / - 2 Partial capture
08-20 00:32 40m - / - EA5HM -6 / - 5 Partial capture
08-20 00:31 40m - / -7 CT3MD -4 / - 7 ✓ Closing fragment
08-20 00:31 40m - / -23 IK6DLK -10 / - 3 ✓ Closing fragment
08-20 00:13 40m - / - EA5XA -12 / - 2 Partial capture
08-20 00:13 40m - / +3 F4FPR -22 / - 2 Partial capture
08-19 23:50 40m - / -13 IU5VLR -12 / - 4 Partial capture
08-19 23:50 40m - / - PA1PXL +4 / - 5 Partial capture
08-19 23:48 40m - / - F1IQH -3 / - 4 Partial capture
08-19 23:36 40m - / -16 ON1JP -17 / - 3 Partial capture
08-17 12:45 20m - / - PC5R -6 / - 6 Partial capture
08-17 12:41 20m - / - M0CSD -20 / - 2 Partial capture
08-17 12:24 20m - / -20 UT7UJ +9 / - 5 Partial capture
08-17 12:17 20m - / -8 MM0KQC -16 / - 2 Partial capture
08-17 12:13 20m - / -16 UT7UJ +13 / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

10m 
UTC    dB Audio  Message
135845  -7 2124  K4KWZ EA7L -07 (x8)
140945  -9 2122  K4KWZ EA7J IM77
123215 -20 1946  K4KWZ DN9SGE 73
124315 -20 1598  K4KWZ CS7BPG IN51
135045  -4 2723  K4KWZ DN9MSG JO43 (x4)
40m 
UTC    dB Audio  Message
213545  -8 1033  K4KWZ CT3HU -16 (x4)
235415  +4 1660  K4KWZ DL3MIB JN57
235415  -2  592  K4KWZ DK5WL JN39
235445  +5 1660  K4KWZ DL3MIB JN57
235445  +7  592  K4KWZ DK5WL JN39
235515  +2 1660  K4KWZ DL3MIB JN57
235515  +9  592  K4KWZ DK5WL JN39
235545  +7 1660  K4KWZ DL3MIB JN57 (x4)
014115 -12  676  K4KWZ SV5BYP KM46
20m 
UTC    dB Audio  Message
235315  -5 2057  OY1HJ K4KWZ R+01 (x5)
235700 -22 1502  K4KWZ WA4LQS EM95
000315 -12 2058  CQ K4KWZ EM93 (x2)
150600  +2 1867  K4KWZ F4EGM JN29 (x2)
151345  -2  463  K4KWZ IK4LZH JN54 (x2)
123130 -10 1440  K4KWZ G4UJS RR73
123730 -21 1944  K4KWZ PD2PE JO21
124400 -19 2270  K4KWZ JA4IXI PM64
80m 
UTC    dB Audio  Message
204700  +5 1204  K4KWZ YO3HUI KN34 (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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