US5EAA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Ukraine Most frequent locator attributed to this token: KN78

Receiver-side FT8 activity involving US5EAA, decoded by SO8OO in southeastern Poland. 913 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 65 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-21.

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 913 FT8 messages attributed to US5EAA as the transmitting token by decoded message structure across 65 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (50%), followed by 80 m (23%) and 20 m (21%). Most decodes (95%) fell within the six-hour window 01:00-07:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9.3 dB.

Overview

913

Messages attributed

UTC dates decoded

133

Active 15-min windows

-9.3 dB

Estimated median S/N

Bands

80m · 208 40m · 454 20m · 188 10m · 63

First attributed message: 2026-06-06
Last attributed message: 2026-09-21 03:44 UTC

Observed FT8 message patterns

Attributed sample: 913 messages
Active dates: 65 UTC dates
Estimated median S/N: -9.3 dB
Estimated 10th-90th percentile: -20 to +8.4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 235, moderate (-15 to -9 dB) 249, strong (≥ -8 dB) 429.

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 US5EAA in decoded directed-looking exchanges:

SV2BWY · Greece ×3 DL9KM · Fed. Rep. of Germany ×2 II7WWA · Italy ×2 F1PBZ · France ×2 UA9SY · Asiatic Russia ×2 DO5PY · Fed. Rep. of Germany ×2 VP2MAA · Montserrat ×2 E71AT · Bosnia-Herzegovina F4FSY · France HA7UL · Hungary IQ4JO · Italy IZ2CPP · Italy

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 US5EAA

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: KN78 · 629 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 971 km (approx.)
Last such locator decoded: 2026-09-21 03:44 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	US5EAA S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 03:41	40m	+6 / 0	KC2GOW	-10 / -13	6	✓ Full exchange observed
09-21 03:39	40m	+6 / -24	N3OUC	-14 / -	5	Partial capture
09-21 03:37	40m	+5 / -	SP5MIG	- / -11	3	✓ Closing fragment
09-19 04:15	40m	-1 / -	ZL3IO	- / -8	6	✓ Closing fragment
09-19 03:37	40m	+6 / -	HK3W	- / -	2	Partial capture
09-18 03:10	80m	+8 / -3	ON3MOH	-6 / -21	4	✓ Full exchange observed
09-18 03:09	80m	+12 / -2	DO5PY	-9 / -25	5	✓ Full exchange observed
09-16 04:11	40m	- / -	SV1EKI	-15 / -	4	Partial capture
09-16 03:37	40m	- / -	R6OK	-14 / -	2	Partial capture
09-16 03:02	40m	-10 / -	IU5RPJ	- / -	3	Partial capture
09-16 02:36	40m	- / +2	9K2WA	-10 / -	2	✓ Closing fragment
09-16 02:35	40m	- / -17	KP4LCA	-14 / -	2	Partial capture
09-15 02:59	80m	- / -	DO5PY	0 / -	2	Partial capture
09-15 02:58	80m	- / -	VE3DZ	-3 / -	3	Partial capture
09-15 02:58	80m	+7 / -	OD5XX	- / -	2	Partial capture
09-15 02:52	80m	+4 / -12	KY2J	-4 / -8	10	Partial capture
09-15 02:52	80m	- / -	VE3DZ	-2 / -	4	Partial capture
09-14 02:37	80m	+5 / -	RD9M/3	- / -10	2	Partial capture
09-14 02:34	80m	+5 / -	DL1HDL	- / -	2	Partial capture
09-14 02:30	80m	+13 / -9	ON4MAP	-14 / -19	7	✓ Full exchange observed
09-14 02:28	80m	+14 / -10	EU1KI	-2 / -4	4	✓ Full exchange observed
09-14 02:28	80m	+12 / -2	F1PBZ	+2 / -18	5	✓ Full exchange observed
09-14 02:26	80m	+16 / -2	SQ6ELK	0 / -10	5	✓ Full exchange observed
09-13 02:20	80m	+5 / -	UY5AX	+5 / -21	9	✓ Full exchange observed
09-13 02:20	80m	+7 / +10	SN40KZE	-8 / -16	3	✓ Full exchange observed
09-13 02:17	80m	+15 / -	OH2BVT	-4 / -15	5	✓ Full exchange observed
09-13 02:16	80m	+6 / -1	HA8LD	-10 / -8	7	✓ Full exchange observed
09-13 02:09	40m	- / -5	M0ILT	-11 / -	2	✓ Closing fragment
09-12 03:10	80m	+1 / -	SP1ZMO	- / -	3	Partial capture
09-12 03:09	80m	+5 / +10	HA6NL	+2 / -7	5	✓ Full exchange observed
09-12 03:05	80m	+8 / -	UB3ADO/P	- / -3	4	Partial capture
09-12 03:03	80m	+7 / -	F4UJU	+2 / -7	5	✓ Closing observed
09-12 03:00	80m	- / -7	TF3VS	+4 / -	3	✓ Closing fragment
09-12 02:59	80m	- / -2	SV2BWY	+3 / -	3	✓ Closing fragment
09-12 02:58	80m	- / -3	E75C	+4 / -	2	✓ Closing fragment
09-12 02:54	80m	- / -	EA5IT	-9 / -	2	Partial capture
09-12 02:53	80m	- / -	DO5PY	-15 / -	4	Partial capture
09-11 02:43	40m	- / -14	K4YT	-20 / -	5	Partial capture
09-09 02:26	40m	-9 / -	SV8/F6BLP	- / -	3	Partial capture
09-09 02:22	40m	-13 / -	M0GWC/A	- / -3	4	Partial capture
09-09 02:21	40m	-13 / -16	K4DBO	-17 / -	3	✓ Closing observed
09-08 03:31	40m	-4 / -	UA9SY	- / -19	2	✓ Closing fragment
09-08 03:28	40m	+1 / -	OK1AMF	- / -	2	Partial capture
09-08 02:58	40m	-10 / -	5N0YEN	- / -	2	Partial capture
09-08 02:46	80m	+3 / -	N0BUZ	- / -	2	Partial capture
09-08 02:45	80m	+4 / -5	ON1JP	-19 / -18	5	✓ Full exchange observed
09-08 02:42	80m	+2 / -5	YO8XFU	+5 / -1	5	✓ Full exchange observed
09-08 02:36	40m	-2 / -	HI3RRR	- / -17	4	✓ Closing fragment
09-05 02:48	40m	- / -16	N8HRZ	-18 / -	3	✓ Closing fragment
09-04 03:21	40m	-6 / -	KT4ZG	- / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
034000  +8 2090  N3OUC US5EAA KN78
034015 -16 1960  US5EAA N3OUC -24
034030  +1 2090  CQ US5EAA KN78
034045 -14 1960  US5EAA N3OUC -24
034100  +6 2090  CQ US5EAA KN78
034115 -12 1960  US5EAA N3OUC -24
034130  +3 2090  KC2GOW US5EAA KN78 (x2)
034215 -10 1650  US5EAA KC2GOW +00
034230  +9 2090  KC2GOW US5EAA R-13 (x2)
034315 -17 2089  US5EAA EA5JHD -16
034330  +6 2090  KC2GOW US5EAA 73
034400  +5 2091  CQ US5EAA KN78
034445 -21 2317  US5EAA N4HFE -25

80m

UTC    dB Audio  Message
025945 +11 1998  CQ US5EAA KN78
030000  +0 2347  US5EAA DO5PY JN49
030845  +9 1997  CQ US5EAA KN78
030900 -10 1998  US5EAA DO5PY JN49
030915 +11 1997  DO5PY US5EAA -25
030930 -10 1997  US5EAA DO5PY R-02
030945 +13 1998  DO5PY US5EAA RR73
031000  -6 1997  US5EAA DO5PY 73
031015 +11 1998  CQ US5EAA KN78
031030  -7 1155  US5EAA ON3MOH -03
031045 +10 1998  ON3MOH US5EAA R-21
031100  -5 1155  US5EAA ON3MOH RR73
031115  +7 1998  ON3MOH US5EAA 73
031145  +6 1998  CQ US5EAA KN78 (x2)

20m

UTC    dB Audio  Message
031045 -15 1994  D2IM US5EAA 73
031245 -15 1993  K0JY US5EAA KN78 (x2)
031415 -15 1994  K3MEC US5EAA KN78
040115 -13  927  US5EAA K0IS -06
040700 -13 2055  US5EAA N9NJY -13 (x2)
044545 -13 2053  CQ US5EAA KN78 (x2)
044645 -13 2053  XE1TZP US5EAA KN78 (x4)
044845  +0 2052  CQ US5EAA KN78
044915  -6 2052  XE1TZP US5EAA KN78

10m

UTC    dB Audio  Message
112400 -17 2088  YT5M US5EAA KN78
112500 -15 2088  CQ US5EAA KN78
112530 -19 2088  TA2R US5EAA KN78
112730 -21 2089  YT5M US5EAA R-07 (x2)
112830 -22 2089  E71AT US5EAA KN78 (x2)
113030 -20 2091  UR5WDE US5EAA +01
113130 -18 2091  HG1DRC US5EAA KN78 (x5)
113515 -17 2092  IW8XLD US5EAA KN78 (x2)

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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