K9UC — 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: EM76

Receiver-side FT8 activity involving K9UC, decoded by SO8OO in southeastern Poland. 5 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-09-22.

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 5 FT8 messages attributed to K9UC as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (80%), followed by 40 m (20%). In this small sample, the estimated median decoder S/N was -9 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

40m · 1 20m · 4

First attributed message: 2026-06-09
Last attributed message: 2026-09-22 00:57 UTC

Observed FT8 message patterns

Attributed sample: 5 messages
Active dates: 2 UTC dates
Estimated median S/N: -9 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 2.

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 K9UC in decoded directed-looking exchanges:

F1PBZ · France ×2 F5IYG · France IK4LZH · Italy IW3RQT · Italy OK2CNI · Czech Republic RK9UN · Asiatic Russia EA2DYB · Spain EB3JT · Spain G3TKT · England SV5BYP · Dodecanese

Most frequent locator attributed to K9UC

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: EM76 · 5 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,028 km (approx.)
Last such locator decoded: 2026-09-22 00:57 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	K9UC S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-04 23:22	40m	- / -21	F1PBZ	-7 / -	3	✓ Closing fragment
11-04 23:15	40m	- / -	IW2MYH	-6 / -	5	Partial capture
10-27 23:21	40m	- / -5	SV5BYP	-8 / -	4	✓ Closing fragment
10-27 23:19	40m	- / -19	4X1UF	-14 / -	11	Partial capture
10-27 23:16	40m	- / -12	EA2DYB	+7 / -	3	✓ Closing fragment
10-27 01:50	40m	- / -12	G3TKT	+3 / -	8	✓ Closing fragment
10-27 01:45	40m	- / -10	EB3JT	+4 / -	3	✓ Closing fragment
10-01 01:21	40m	- / -5	M7EYP	-10 / -	4	Partial capture
08-29 20:50	20m	- / -	DK1MCS	-4 / -	2	Partial capture
08-29 20:45	20m	- / -	SV5BYP	-8 / -	5	Partial capture
08-29 20:38	20m	- / 0	DL3RL	-10 / -	2	Partial capture
08-29 20:38	20m	- / -	DH2RL	-4 / -	9	Partial capture
08-12 19:56	20m	- / -	OK4SD	+5 / -	4	Partial capture
08-12 19:56	20m	- / -24	IW3RQT	-7 / -	2	✓ Closing fragment
08-12 19:55	20m	- / -	PD0RDD	-3 / -	3	Partial capture
08-12 19:51	20m	- / -	IW3RQT	-2 / -	2	Partial capture
08-12 19:50	20m	- / -	PD0RDD	0 / -	2	Partial capture
08-11 00:31	20m	- / -	RK9UN	-22 / -	2	✓ Closing fragment
08-11 00:14	20m	- / -8	F1PBZ	-6 / -	2	✓ Closing fragment
08-11 00:07	20m	- / -8	OK2CNI	-10 / -	3	✓ Closing fragment
08-10 21:54	20m	- / -	DM4GG	-10 / -	2	Partial capture
08-09 20:29	20m	- / -	EA3AAY	-7 / -	3	Partial capture
08-09 20:25	20m	- / -20	F5IYG	-10 / -	5	✓ Closing fragment
08-09 20:22	20m	- / -	EA3AAY	-13 / -	5	Partial capture
08-09 20:20	20m	- / -16	UA3VVA	-19 / -	8	Partial capture
08-09 20:19	20m	- / -	F5IYG	-12 / -	6	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
232245 -17  230  K9UC 4X1UF -19 (x6)
231430 -19 1537  K9UC DF8RU JN68
231500  -7  549  K9UC IW2MYH JN45 (x5)
232245  -5 2587  K9UC F1PBZ -21 (x3)

20m

UTC    dB Audio  Message
203915  -9 2051  K9UC DL3RL R+00
204045  -7 2437  K9UC DH2RL JN68 (x7)
204530  -8 2434  K9UC SV5BYP KM46 (x5)
205030  -5 2435  K9UC DK1MCS JN57 (x2)

CW

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

Explore CW reception at SO8OO

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