KC1YJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FN42

Receiver-side FT8 activity involving KC1YJ, decoded by SO8OO in southeastern Poland. 19 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-06 and 2026-09-07.

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 19 FT8 messages attributed to KC1YJ 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 -19 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-19 dB

Estimated median S/N

Bands

40m · 19

First attributed message: 2026-09-06
Last attributed message: 2026-09-07 01:59 UTC

Observed FT8 message patterns

Attributed sample: 19 messages
Active dates: 2 UTC dates
Estimated median S/N: -19 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, moderate (-15 to -9 dB) 1, 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 KC1YJ in decoded directed-looking exchanges:

AB2RR · United States DK8HC · Fed. Rep. of Germany DL1AUW · Fed. Rep. of Germany DL2EMS · Fed. Rep. of Germany ER3PM · Moldova F1PBZ · France F4FPR · France F4MZI · France KB3Z · United States KC3HRV · United States KS4OT · United States PA3KUS · Netherlands

Most frequent locator attributed to KC1YJ

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: FN42 · 6 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 6,716 km (approx.)
Last such locator decoded: 2026-09-07 01:56 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	KC1YJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-07 02:13	80m	- / -23	F4UJU	+2 / -	3	✓ Closing fragment
09-07 02:05	80m	- / -22	SP8DK	+21 / -	3	✓ Closing fragment
09-07 02:03	80m	- / -	W4IEE	-16 / -	2	Partial capture
09-07 01:54	40m	- / -	EA3LF	-6 / -	2	Partial capture
09-07 01:48	40m	-21 / -	KB3Z	- / +2	2	✓ Closing fragment
09-07 01:44	40m	-21 / -	9A4ZM	- / -14	4	Partial capture
09-07 01:42	40m	-19 / -	KC3HRV	-20 / -	2	✓ Closing observed
09-07 01:38	40m	-20 / -18	RA6OY	+8 / -15	6	✓ Full exchange observed
09-06 23:34	40m	- / -	SV1MOZ	-4 / -	2	Partial capture
09-06 23:28	40m	- / -	F4FPR	-1 / -	2	✓ Closing fragment
09-06 23:25	40m	- / -	2E0ROJ	-5 / -	2	Partial capture
09-06 23:25	40m	- / -18	DL2EMS	-11 / -	6	✓ Closing fragment
09-06 23:23	40m	- / -15	F4MZI	-8 / -	3	Partial capture
09-06 23:20	40m	- / -	ER3PM	-22 / -	2	✓ Closing fragment
09-06 23:13	40m	- / -9	MI7XHT	-12 / -	2	Partial capture
09-06 23:11	40m	- / -15	F1PBZ	-5 / -	3	✓ Closing fragment
09-06 23:06	40m	- / -11	R4ZZ	-12 / -	5	✓ Closing fragment
09-06 23:04	40m	- / -14	DG5PW	-10 / -	2	Partial capture
09-06 22:57	40m	- / -12	DK8HC	-2 / -	3	✓ Closing fragment
09-06 22:57	40m	- / -	UR4QWW	-3 / -	3	Partial capture
09-06 22:49	40m	- / -	IW9FRA	-13 / -	8	Partial capture
09-06 22:47	40m	- / -19	RA3WY	+4 / -	3	✓ Closing fragment
09-06 22:46	40m	- / -9	DL1AUW	+2 / -	3	✓ Closing fragment
09-06 22:45	40m	- / -14	SV5BYP	-1 / -	5	✓ Closing fragment
09-06 22:43	40m	- / -15	PA3KUS	-3 / -	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
020345 -16  503  KC1YJ W4IEE EL89 (x2)
020545 +21  374  KC1YJ SP8DK KO10 (x3)
020645  -5 1414  KC1YJ F4UJU JN06 (x4)

40m

UTC    dB Audio  Message
014300 -19 2021  KC3HRV KC1YJ RR73
014430 -22 2021  9A4ZM KC1YJ -14 (x4)
014730 -18 2020  CQ KC1YJ FN42 (x2)
014830 -21 2020  KB3Z KC1YJ +02 (x2)
015000 -21 2019  CQ KC1YJ FN42
015100 -17 2018  KS4OT KC1YJ RR73
015445  -6 1230  KC1YJ EA3LF JN11 (x2)
015600 -17 2016  CQ KC1YJ FN42
015900 -11  383  KM7AJI KC1YJ -24

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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