KC1UBT — 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 KC1UBT, decoded by SO8OO in southeastern Poland. 284 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 14 UTC dates in the available aggregate history. Observed between 2026-07-08 and 2026-09-20.

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 284 FT8 messages attributed to KC1UBT as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (80%), followed by 40 m (20%). Most decodes (100%) fell within the six-hour window 20:00-02:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

284

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

40m · 56 20m · 228

First attributed message: 2026-07-08
Last attributed message: 2026-09-20 01:45 UTC

Observed FT8 message patterns

Attributed sample: 284 messages
Active dates: 14 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -15 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 24, moderate (-15 to -9 dB) 104, strong (≥ -8 dB) 156.

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 KC1UBT in decoded directed-looking exchanges:

7Z1BQ · Saudi Arabia 7Z1DJ · Saudi Arabia E77FN · Bosnia-Herzegovina EA1FWJ · Spain EA7BD · Spain EB5DFU · Spain F5CKQ · France HI8DX · Dominican Republic IU8RFW · Italy K0C · United States LZ2KV · Bulgaria LZ2VQ · Bulgaria

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 KC1UBT

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 · 79 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 6,716 km (approx.)
Last such locator decoded: 2026-09-20 01:45 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	KC1UBT S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 01:44	40m	-3 / -	CU2JX	- / -	3	Partial capture
09-20 01:39	40m	-4 / 0	UN7LZ	0 / -14	3	Partial capture
09-20 01:36	40m	-3 / -9	R6OIW	-6 / -	4	✓ Closing observed
09-20 01:35	40m	-3 / -	UT3RO	- / -13	2	Partial capture
09-20 01:35	40m	- / -	RA4ABH	-5 / -	4	Partial capture
09-20 01:32	40m	-4 / -9	UA4CPM	+9 / -10	7	✓ Full exchange observed
09-20 01:32	40m	-6 / -4	IW2MYH	+2 / -8	5	✓ Full exchange observed
09-20 01:27	40m	- / -	OS4K	-11 / -	4	Partial capture
09-20 01:27	40m	-6 / -11	R2BQM	+3 / -20	6	✓ Full exchange observed
09-20 01:27	40m	-7 / -2	R6DZL	+2 / -15	9	✓ Full exchange observed
09-20 01:22	40m	-7 / +5	EA3NE	-5 / -10	6	✓ Full exchange observed
09-20 01:22	40m	-6 / -	PE1NPS	-12 / -16	4	✓ Closing observed
09-20 01:22	40m	- / -	F5PBG	-2 / -	2	Partial capture
09-20 01:22	40m	- / -	RN6HK	+11 / -	4	Partial capture
09-20 01:21	40m	-2 / +6	SV2HTW	-15 / -9	3	Partial capture
09-19 23:01	40m	0 / -8	R2BQM	+2 / -15	5	Partial capture
09-19 22:58	40m	-1 / -5	EX7CQ	0 / -16	6	✓ Full exchange observed
09-10 22:16	40m	-9 / -	YO3HUI	-16 / -	3	✓ Closing observed
09-10 22:15	40m	-6 / -	UA2FFD	- / -	3	Partial capture
09-09 22:02	40m	+1 / -	YO6LM	- / -14	3	Partial capture
09-09 21:59	40m	-4 / -	PD2LM	-7 / -4	7	✓ Full exchange observed
09-09 21:59	40m	- / -	PD0LBY	-1 / -	2	Partial capture
09-09 21:58	40m	0 / -	JY5IB	-15 / -14	2	✓ Closing observed
09-09 21:47	40m	-10 / -	EA1CQ	- / -7	2	✓ Closing fragment
09-09 21:46	40m	- / -9	G0OYR	-16 / -	2	Partial capture
09-09 21:45	40m	- / -	F5RRS	+4 / -	4	Partial capture
09-09 21:45	40m	-11 / -18	LB7ZG	-15 / -14	3	Partial capture
09-09 21:42	40m	-11 / -	F4MID	- / -	3	Partial capture
09-09 21:35	40m	-6 / -7	EA1CQ	-5 / -10	2	Partial capture
09-09 21:30	40m	-8 / -17	F4MID	-12 / -16	5	Partial capture
08-21 21:32	20m	+9 / -14	R3BCK	-4 / -13	14	✓ Full exchange observed
08-21 21:29	20m	+14 / -	R6DZL	- / -13	3	Partial capture
08-21 21:28	20m	+14 / -	DL9UXF	- / -6	2	Partial capture
08-21 21:26	20m	+15 / +1	UX1VT	-3 / -11	5	✓ Full exchange observed
08-21 21:22	20m	0 / -	<...>	- / -	2	Partial capture
08-21 21:11	20m	+4 / -4	<...>	-2 / -	3	Partial capture
08-21 21:07	20m	+2 / -	ZS6OB	- / -10	3	✓ Closing fragment
08-21 21:04	20m	+10 / -	R6FFB	-9 / -	2	Partial capture
08-21 21:04	20m	+8 / -8	PD2V	+7 / -9	4	Partial capture
08-21 21:02	20m	+3 / -	7Z1DJ	- / -11	3	✓ Closing fragment
08-19 21:24	20m	-13 / -	IK0ISD	- / -7	2	Partial capture
08-19 21:22	20m	-14 / -	DL8YDP	- / -22	2	Partial capture
08-19 21:15	20m	-16 / -	E77FN	-12 / -16	3	✓ Closing observed
08-19 21:12	20m	-10 / -	R5AJ	- / -19	4	✓ Closing fragment
08-19 21:07	20m	-20 / -	PD4FL	- / -11	2	Partial capture
08-19 21:04	20m	-19 / -	EA7BD	-21 / -	2	✓ Closing observed
08-19 21:04	20m	-19 / -11	TA2EC	-17 / -	5	✓ Closing observed
08-19 21:02	20m	-20 / -	DF3VG	- / -4	2	Partial capture
08-19 20:58	20m	-18 / -	SP3JHZ	- / -	2	✓ Closing fragment
08-19 20:57	20m	-19 / -	DL8DUL	- / -17	5	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
013545  -4 1273  KC1UBT RA4ABH LO20
013600  -3 1273  UT3RO KC1UBT RRR
013615  -4 1273  KC1UBT RA4ABH LO20 (x2)
013645  -2 1169  KC1UBT R6OIW KN86 (x2)
013730  -3 1273  R6OIW KC1UBT RRR
013745 -11 1169  KC1UBT R6OIW 73
013915  -4 1273  UN7LZ KC1UBT FN42
013930  +0 2489  KC1UBT UN7LZ +00
013945  -4 1273  UN7LZ KC1UBT R-14
014000  +0 2489  KC1UBT RR73; ON8WR <...> -10
014445  -4 1194  CU2JX KC1UBT FN42 (x3)

20m

UTC    dB Audio  Message
213245  -5 2977  KC1UBT R3BCK KO85
213300 +12 3065  R3BCK KC1UBT -13
213315  -2 2977  KC1UBT R3BCK KO85
213330 +11 3065  R3BCK KC1UBT -16
213345  +1 2977  KC1UBT R3BCK R-14
213400  +9 3065  R3BCK KC1UBT RRR
213415  -7 2976  KC1UBT R3BCK R-14
213430 +13 3065  R3BCK KC1UBT RRR
213445  -3 2977  KC1UBT R3BCK 73 (x2)
213530  +5 3065  US5HL KC1UBT 73
213600  +9 3065  R3BCK KC1UBT 73
213645  -3 1376  KC1UBT ON5APC JO21
213700  -3 3065  R3BCK KC1UBT -10
213715  +0  950  KC1UBT IV3UWA/0 R-05

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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