K4CEB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EM95

Receiver-side FT8 activity involving K4CEB, decoded by SO8OO in southeastern Poland. 35 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-01 and 2026-09-16.

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 35 FT8 messages attributed to K4CEB as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -15 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

40m · 35

First attributed message: 2026-08-01
Last attributed message: 2026-09-16 01:12 UTC

Observed FT8 message patterns

Attributed sample: 35 messages
Active dates: 2 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -17 to -12 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 22, strong (≥ -8 dB) 0.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with K4CEB in decoded directed-looking exchanges:

A71UN · Qatar EA5HM · Spain KC8VMG · United States N3GTY · United States N4DWD · United States PC2J · Netherlands W9ZPL · United States WB8NXR · United States

Most frequent locator attributed to K4CEB

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: EM95 · 15 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,876 km (approx.)
Last such locator decoded: 2026-09-16 01:11 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 UTC	Band	K4CEB S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-16 01:11	40m	-12 / -8	F4CQS	-6 / -11	3	Partial capture
09-16 01:11	40m	-14 / -	N4SJA	- / -11	2	Partial capture
09-16 01:09	40m	-14 / -	WB8NXR	- / +5	2	✓ Closing fragment
09-16 01:07	40m	-13 / -	W9ZPL	- / -2	2	✓ Closing fragment
09-16 01:04	40m	- / -12	F4CQS	-6 / -	2	Partial capture
09-16 01:03	40m	- / -	MI7XHT	-18 / -	2	Partial capture
09-16 00:59	40m	-14 / -	KC8VMG	- / +7	2	✓ Closing fragment
09-16 00:59	40m	-15 / -10	EA5HM	-7 / -10	5	✓ Full exchange observed
09-16 00:59	40m	- / -	MI7XHT	-18 / -	2	Partial capture
09-16 00:52	40m	-16 / -	N4DWD	- / +9	2	✓ Closing fragment
09-16 00:51	40m	- / -11	F1PBZ	+2 / -	8	Partial capture
09-16 00:48	40m	- / -	EI3CTB	-6 / -	2	Partial capture
09-16 00:37	40m	- / -16	R9OOF	+1 / -	2	Partial capture
09-16 00:36	40m	- / -18	M0KDZ	-19 / -	5	Partial capture
09-16 00:34	40m	-19 / +3	WA2COU	-16 / +2	3	Partial capture
08-01 01:19	40m	- / +5	A71UN	-13 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
010430 -13 1817  CQ K4CEB EM95
010445  -6 1817  K4CEB F4CQS -12 (x2)
010730 -14 1817  W9ZPL K4CEB -02 (x2)
010900 -16 1818  CQ K4CEB EM95
010930 -14 1817  WB8NXR K4CEB +05 (x2)
011030 -14 1817  CQ K4CEB EM95 (x2)
011130 -13 1818  N4SJA K4CEB -11
011145  -6 1819  K4CEB F4CQS -08
011200 -15 1818  N4SJA K4CEB -11
011215  -6 1818  K4CEB F4CQS -08
011230 -12 1818  F4CQS K4CEB R-11

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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