K3UA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FN64

Receiver-side FT8 activity involving K3UA, decoded by SO8OO in southeastern Poland. 45 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-19 and 2026-09-18.

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 45 FT8 messages attributed to K3UA as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (62%), followed by 40 m (20%) and 80 m (18%). Several six-hour UTC windows tied for the largest share (96%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (80%); the estimated median was +3 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

+3 dB

Estimated median S/N

Bands

80m · 8 40m · 9 20m · 28

First attributed message: 2026-06-19
Last attributed message: 2026-09-18 01:58 UTC

Observed FT8 message patterns

Attributed sample: 45 messages
Active dates: 6 UTC dates
Estimated median S/N: +3 dB
Estimated 10th-90th percentile: -15 to +13 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 6, strong (≥ -8 dB) 36.

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 K3UA in decoded directed-looking exchanges:

PR2NX · Brazil 7Z1BQ · Saudi Arabia A71XX · Qatar DG2ZJ · Fed. Rep. of Germany EA5GGU/P · Spain F1SZC · France G3TKT · England GB2WWA · England OK4FX · Czech Republic R4FDW · European Russia S51R · Slovenia SV5BYP · Dodecanese

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 K3UA

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: FN64 · 6 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 6,327 km (approx.)
Last such locator decoded: 2026-09-18 01:55 UTC

Other locator fields attributed to this token: FN54 (5), FN22 (3), and EN90 (1).

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	K3UA S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-18 01:55	40m	+9 / -	TN8GD	- / -15	6	Partial capture
09-17 02:27	80m	- / -	F5OYA/P	-5 / -	6	Partial capture
09-17 02:16	80m	- / -8	YO4NF	+17 / -	2	Partial capture
09-17 02:11	80m	-5 / -	RI1FJZ	- / -19	8	✓ Closing fragment
09-09 02:15	40m	-14 / -	5N0YEN	- / -2	3	✓ Closing fragment
08-26 04:19	20m	- / -4	EA5GGU/P	+1 / -	2	✓ Closing fragment
08-21 13:07	20m	-9 / -	BV2NF	- / -	2	Partial capture
08-21 13:03	20m	- / -	PD1ADA	-1 / -	8	Partial capture
08-21 13:02	20m	- / -	UN7BCF	-9 / -	2	Partial capture
08-21 03:39	20m	- / -17	UA6EED	-6 / -	2	✓ Closing fragment
08-20 20:19	20m	- / -9	G8WVB	-2 / -	4	Partial capture
08-09 01:26	60m	- / -	SV1QEW	-6 / -	2	Partial capture
08-09 01:12	60m	- / -18	LA0FA	-6 / -	4	✓ Closing fragment
08-09 01:11	60m	- / -15	F5RAV	-17 / -	3	✓ Closing fragment
07-29 05:40	20m	- / -11	F1SZC	0 / -	3	✓ Closing fragment
07-21 04:13	20m	+15 / -	A61SD	- / -6	3	Partial capture
07-21 04:09	20m	+4 / -	7Z1BQ	- / -	2	✓ Closing fragment
07-21 04:08	20m	+8 / -	OK4FX	- / -13	2	✓ Closing fragment
07-21 04:07	20m	+4 / -	R4FDW	- / -15	2	✓ Closing fragment
07-21 04:05	20m	+4 / -	UA6HGM	- / -6	2	✓ Closing fragment
07-21 04:04	20m	+2 / -	UR7MA	- / +5	2	✓ Closing fragment
07-21 04:02	20m	+2 / -	R2DN	- / +9	2	Partial capture
07-21 04:01	20m	+4 / -	R2BQM	- / +1	2	Partial capture
07-20 05:27	20m	- / -	MM3WYM	-10 / -	4	Partial capture
07-20 04:18	20m	- / -	RC6OX	+9 / -	2	Partial capture
07-19 04:54	20m	- / -9	LZ2JE	-12 / -	2	Partial capture
07-18 04:39	20m	- / -10	DG2ZJ	-6 / -	2	✓ Closing fragment
07-09 03:19	20m	- / -10	A71XX	-16 / -	2	✓ Closing fragment
07-07 04:40	20m	- / -	SV5ADM	-20 / -	2	Partial capture
06-30 03:50	20m	- / +1	G3TKT	+2 / -	2	✓ Closing fragment
06-26 03:03	20m	- / -11	SV5BYP	-12 / -	2	✓ Closing fragment
06-25 01:06	20m	- / -11	S51R	-8 / -	3	✓ Closing fragment
06-23 20:42	20m	- / -21	GB1500M	+8 / -	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
021500 -15 1916  5N0YEN K3UA FN22 (x3)
015545  +8  806  TN8GD K3UA FN64 (x6)

80m

UTC    dB Audio  Message
021430  -5 1453  K3UA RX6DA KN85
021445  -3 2215  RI1FJZ K3UA R-19 (x3)
021600 +14 2216  K3UA YO4NF -08
021600 -15 2381  K3UA R7KKO -18
021630 +20 2216  K3UA YO4NF -08
022400  -6 2958  K3UA F5OYA/P JN13 (x8)

20m

UTC    dB Audio  Message
130245  -8 2146  K3UA UN7BCF MO43 (x2)
130315  +2 2034  K3UA PD1ADA JO21 (x7)
130700  -9  401  BV2NF K3UA FN22
130715  -2 2034  K3UA PD1ADA JO21
130830  -9  402  BV2NF K3UA FN22
041700  -5  431  K3UA LZ1EV -05
041900  +2  418  K3UA EA5GGU/P -04 (x2)

60m

UTC    dB Audio  Message
011130 -17 1534  K3UA F5RAV JN09
011200  -4  797  K3UA LA0FA JO59
011200 -18 1534  K3UA F5RAV R-15
011230  -5  797  K3UA LA0FA JO59
011230 -15 1534  K3UA F5RAV 73
011300  -7  796  K3UA LA0FA R-18 (x2)
012600  -7 1241  K3UA SV1QEW KM18 (x2)

10m

UTC    dB Audio  Message
200615 -11 2692  K3UA PR2NX 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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