KC8ZKS — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EM89

Receiver-side FT8 activity involving KC8ZKS, decoded by SO8OO in southeastern Poland. 56 FT8 messages attributed to this token as transmitter, on 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-06-19.

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 56 FT8 messages attributed to KC8ZKS as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (95%) fell within the six-hour window 00:00-06:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (61%); the estimated median was -13 dB.

Overview

56
Messages attributed
5
UTC dates decoded
13
Active 15-min windows
-13 dB
Estimated median S/N

Bands

20m · 56
First attributed message: 2026-06-11
Last attributed message: 2026-06-19 02:13 UTC

Observed FT8 message patterns

Attributed sample
56 messages
Active dates
5 UTC dates
Estimated median S/N
-13 dB
Estimated 10th-90th percentile
-16 to -4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 34, strong (≥ -8 dB) 14.

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 KC8ZKS in decoded directed-looking exchanges:

Most frequent locator attributed to KC8ZKS

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
EM89 · 9 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,661 km (approx.)
Last such locator decoded
2026-06-19 02:13 UTC

Other locator fields attributed to this token: EN80 (4).

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 UTCBandKC8ZKS S/NCounterpartCounterpart S/NMsgsCapture
09-03 00:47 40m - / - KE1VT -7 / - 3 Partial capture
08-28 20:20 20m - / - M7DBB +4 / - 6 Partial capture
08-28 20:02 20m - / -19 EA4T -2 / - 2 ✓ Closing fragment
08-28 03:47 20m - / -18 UA3YFL -4 / - 4 ✓ Closing fragment
08-28 03:46 20m - / -19 RU6UR -1 / - 2 Partial capture
08-28 03:41 20m - / - 4X1FK +2 / - 5 Partial capture
08-28 03:15 20m - / -8 F4ASA -3 / - 5 ✓ Closing fragment
08-28 03:06 20m - / -12 RU3GF +2 / - 6 ✓ Closing fragment
08-28 03:01 20m - / -17 PR8ZX -6 / - 3 ✓ Closing fragment
08-19 21:13 20m - / -6 W1WCI -11 / - 2 Partial capture
08-16 02:13 40m - / - R9CS/P -6 / - 3 Partial capture
08-08 02:49 40m - / - F1IQH -8 / - 2 Partial capture
08-07 20:47 20m - / -10 I4HRH -18 / - 2 Partial capture
08-05 00:11 20m - / -17 IU5AWQ -17 / - 3 ✓ Closing fragment
08-04 22:24 20m - / -13 F1PBZ -8 / - 2 Partial capture
07-29 03:02 40m - / - R2AL -16 / - 4 Partial capture
07-29 02:54 40m - / - R2AL -16 / - 2 Partial capture
07-29 02:54 40m - / - F1IQH -10 / - 2 Partial capture
07-26 02:11 20m - / - W3US -14 / - 2 Partial capture
07-26 02:01 20m - / -17 7Z1BQ -21 / - 3 Partial capture
07-25 21:32 20m - / -11 EA4T -13 / - 3 Partial capture
07-25 03:43 40m - / - IK4LZH -6 / - 4 Partial capture
07-25 03:38 20m - / -9 F4EGM -11 / - 6 Partial capture
07-24 06:24 40m - / - F4JTM -10 / - 2 Partial capture
07-23 18:19 20m - / -12 EA4T -17 / - 3 Partial capture
07-23 16:22 20m - / -15 EA4T -23 / - 2 Partial capture
07-22 03:09 20m - / -9 RN6MA -4 / - 2 Partial capture
07-21 04:24 20m - / - RU3DNN -16 / - 2 Partial capture
07-21 00:11 20m - / -11 VE2FVV -8 / - 5 Partial capture
07-20 07:11 20m - / -12 G5MJF -10 / - 4 Partial capture
07-20 04:08 20m - / -14 RA3QUA +3 / - 3 ✓ Closing fragment
07-20 03:45 40m - / -16 F5RRS -20 / - 2 Partial capture
07-20 03:40 40m - / -14 DL5DQZ -7 / - 5 Partial capture
07-18 01:35 20m - / -10 UT7UJ -1 / - 3 ✓ Closing fragment
07-14 02:45 40m - / -18 SV2KD -8 / - 3 Partial capture
07-14 02:35 40m - / - OH1EDK -5 / - 2 Partial capture
07-14 02:15 40m - / -9 F1PBZ -10 / - 2 Partial capture
07-12 02:19 40m - / -9 LA8ENA -16 / - 5 Partial capture
07-12 02:07 40m - / -13 DL5DQZ -12 / - 2 Partial capture
07-12 01:18 40m - / - OH1EDK +1 / - 6 Partial capture
07-12 01:14 40m - / -8 EA3AAY -16 / - 2 ✓ Closing fragment
07-12 01:07 40m - / -17 9A60CBM -10 / - 2 Partial capture
07-12 01:00 40m - / -16 IK4LZH 0 / - 2 ✓ Closing fragment
07-10 23:26 20m - / -18 V31MA -11 / - 3 ✓ Closing fragment
07-10 03:03 40m - / -18 IK4LZH 0 / - 3 ✓ Closing fragment
07-10 02:58 40m - / - F1IQH -15 / - 2 Partial capture
07-09 19:26 20m - / -14 EA1BL -14 / - 3 ✓ Closing fragment
07-08 19:59 20m - / -12 EA4T -10 / - 2 Partial capture
07-08 01:01 80m - / -12 WD4DAN -21 / - 2 ✓ Closing fragment
07-07 10:13 20m - / - M6BLV -10 / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
030215 -17 1627  KC8ZKS R2AL KO85 (x4)
024945  -6  633  KC8ZKS F1IQH JN27 (x2)
030245 -23 1603  KC8ZKS G5TV IO93
015600 -15 1819  KC8ZKS LZ1VVD KN12
021345  -7 2535  KC8ZKS R9CS/P LO75 (x3)
004730  -5  533  KC8ZKS WV2M FN20
004730  -6  639  KC8ZKS KE1VT FN34 (x3)
20m 
UTC    dB Audio  Message
034500  -9 1565  KC8ZKS R1QD -15
034630  -1 1042  KC8ZKS RU6UR -19
034700  -3 2321  KC8ZKS UA3YFL KO73
034700  -1 1042  KC8ZKS RU6UR -19
034730  -5 2321  KC8ZKS UA3YFL R-18 (x3)
200230  -2 1377  KC8ZKS EA4T -19 (x2)
202000  -2 1095  KC8ZKS M7DBB IO92 (x6)
80m 
UTC    dB Audio  Message
010100 -23 1604  KC8ZKS WD4DAN -12 (x2)

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