K9KU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EN65

Receiver-side FT8 activity involving K9KU, decoded by SO8OO in southeastern Poland. 119 FT8 messages attributed to this token as transmitter, on 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-20 and 2026-08-23.

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 119 FT8 messages attributed to K9KU as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

119

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

20m · 119

First attributed message: 2026-08-20
Last attributed message: 2026-08-23 03:41 UTC

Observed FT8 message patterns

Attributed sample: 119 messages
Active dates: 4 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -14 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 43, strong (≥ -8 dB) 70.

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 K9KU in decoded directed-looking exchanges:

D2UY · Angola ×2 7Z1BQ · Saudi Arabia 8Z1IT · Saudi Arabia A41KB · Oman A92AE · Bahrain A93MO · Bahrain HA7JDU · Hungary HB9EXE · Switzerland HL3GOB · Republic of Korea IU0NAD · Italy JY5IB · Jordan N1KAB · United States

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 K9KU

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: EN65 · 71 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,382 km (approx.)
Last such locator decoded: 2026-08-23 03:38 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	K9KU S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-23 03:38	20m	+2 / -	A93MO	-8 / -13	10	✓ Closing observed
08-23 03:32	20m	-12 / -	9K2MP	- / -	9	Partial capture
08-23 02:44	20m	-5 / -7	JY5IB	-14 / -19	5	✓ Full exchange observed
08-23 02:24	20m	-6 / -	D2UY	- / -4	2	✓ Closing fragment
08-23 02:10	20m	-8 / -	HA1ORA	- / -8	2	Partial capture
08-23 02:08	20m	+2 / -	SM2OTU	- / -7	3	✓ Closing fragment
08-23 02:04	20m	-3 / -	8Z1IT	- / +3	2	Partial capture
08-23 02:01	20m	-5 / -	R0AX	- / -	4	Partial capture
08-23 01:55	20m	-1 / -15	TA3KJ	-17 / -	4	Partial capture
08-23 01:54	20m	+1 / -	N1KAB	- / -	5	✓ Closing fragment
08-23 01:52	20m	-2 / -	A41KB	- / +1	4	Partial capture
08-23 01:40	20m	-7 / -	HA7JDU	- / 0	3	✓ Closing fragment
08-23 01:35	20m	-7 / -	UK8OM	- / -	5	Partial capture
08-23 01:29	20m	-5 / -	9K2MP	- / -	5	Partial capture
08-23 01:25	20m	-6 / -	KL5PF	- / -12	3	Partial capture
08-23 01:20	20m	-9 / -13	SP1ZMO	-6 / -13	5	✓ Full exchange observed
08-23 01:15	20m	-11 / -	IS0KNG	- / -	3	Partial capture
08-23 01:13	20m	-8 / -	OD5ZZ	- / -19	2	✓ Closing fragment
08-23 01:01	20m	-6 / -6	SV2TCC	-15 / -12	4	✓ Full exchange observed
08-23 00:36	20m	-7 / -	R9LM	- / -15	3	✓ Closing fragment
08-23 00:08	20m	-11 / -	9K2MP	- / -	9	Partial capture
08-22 23:50	20m	-14 / -	<...>	- / -21	3	Partial capture
08-22 23:44	20m	-13 / -	IS0KNG	- / -	6	Partial capture
08-22 23:38	20m	-13 / -4	HB9EXE	+2 / -3	5	✓ Full exchange observed
08-22 23:28	20m	-8 / -19	A92AE	-11 / -9	5	✓ Full exchange observed
08-22 23:26	20m	- / -10	IU0NAD	-7 / -	5	✓ Closing fragment
08-22 23:21	20m	-9 / -	9K2MP	- / -	3	Partial capture
08-22 23:16	20m	-7 / -	9K2MP	- / -	3	Partial capture
08-22 23:14	20m	-8 / -	M7JVT	- / -12	4	Partial capture
08-22 23:11	20m	-8 / -	IS0KNG	- / -	2	Partial capture
08-21 13:30	20m	- / -	YB0KEM	-22 / -	4	Partial capture
08-21 01:44	20m	- / -12	SV1MOZ	-12 / -	3	Partial capture
08-21 01:38	20m	- / -8	A41KB	-12 / -	4	✓ Closing fragment
08-21 01:24	20m	- / -7	8Z1IT	-4 / -	2	✓ Closing fragment
08-21 00:03	20m	-18 / -	DL1R	- / -24	2	Partial capture
08-21 00:01	20m	- / -11	7Z1BQ	-16 / -	2	✓ Closing fragment
08-20 23:59	20m	-19 / +7	D2UY	+2 / -	3	✓ Closing observed
08-20 23:59	20m	- / -	KE4PMS	-10 / -	2	Partial capture
08-20 23:59	20m	- / -	R6OP	-5 / -	2	Partial capture
08-20 23:49	20m	- / -9	SV1EAG	-22 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
033445 -13 1983  9K2MP K9KU EN65 (x5)
033815  +7  542  A93MO K9KU EN65 (x4)
034000 -10  542  K9KU A93MO RR73
034015  -2  542  A93MO K9KU R-13
034030 -11  542  K9KU A93MO RR73
034045  -2 1003  A93MO K9KU R-13 (x2)
034130  -3  542  K9KU A93MO RR73

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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