US5AA — 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: Ukraine Most frequent locator attributed to this token: KO70

Receiver-side FT8 activity involving US5AA, decoded by SO8OO in southeastern Poland. 87 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-10-16 and 2026-11-01.

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 87 FT8 messages attributed to US5AA as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (72%), followed by 80 m (28%). Most decodes (90%) fell within the six-hour window 08:00-14:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (69%); the estimated median was -6 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

80m · 24 40m · 63

First attributed message: 2026-10-16
Last attributed message: 2026-11-01 15:43 UTC

Observed FT8 message patterns

Attributed sample: 87 messages
Active dates: 4 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -18 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 11, moderate (-15 to -9 dB) 16, strong (≥ -8 dB) 60.

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 US5AA in decoded directed-looking exchanges:

UX4AA · Ukraine ×3 DA1ST · Fed. Rep. of Germany ×2 ON5EA · Belgium ×2 9A4ZM · Croatia DF8RU · Fed. Rep. of Germany DK7UY · Fed. Rep. of Germany F5PBG · France HA5DI · Hungary HA7TM · Hungary ON4CN · Belgium PA3CPS · Netherlands PD2MAC · Netherlands

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 US5AA

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: KO70 · 13 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 941 km (approx.)
Last such locator decoded: 2026-11-01 09:48 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	US5AA S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-01 15:41	80m	+6 / -	EX7DY	- / -6	3	✓ Closing fragment
11-01 15:37	80m	+4 / +1	UT1KWA	-4 / +6	3	✓ Full exchange observed
11-01 15:34	80m	+4 / 0	UX7UU	+8 / -	5	✓ Full exchange observed
11-01 15:32	80m	+3 / -	UT5EL	+22 / -	3	✓ Closing observed
11-01 09:48	40m	-2 / +1	PA3CPS	-11 / 0	5	✓ Full exchange observed
11-01 09:44	40m	+3 / -	PD2MAC	-11 / -19	4	✓ Closing observed
11-01 09:44	40m	+5 / -	F5PBG	- / -16	2	✓ Closing fragment
11-01 09:42	40m	+1 / -14	DK7UY	-18 / -3	4	✓ Full exchange observed
11-01 09:40	40m	-3 / -8	PC40EUDXF	-7 / -4	2	Partial capture
11-01 09:38	40m	-8 / -	UA9JTJ/4	- / -4	4	Partial capture
10-31 11:41	80m	-21 / -	UX4AA	-22 / -	7	✓ Closing observed
10-31 11:38	80m	-20 / -	UX4AA	- / -	2	Partial capture
10-27 09:32	40m	-8 / -5	YU6DX	-6 / +2	5	✓ Full exchange observed
10-27 09:29	40m	- / -	R+00	-7 / -	2	Partial capture
10-27 09:27	40m	-7 / -9	DA1ST	-13 / -4	10	✓ Full exchange observed
10-27 09:25	40m	-8 / +9	DF8RU	-1 / -	5	✓ Closing observed
10-27 09:23	40m	-6 / -7	9A4ZM	-8 / +2	5	✓ Full exchange observed
10-27 09:22	40m	-6 / -	YO3CNW	- / -	2	✓ Closing fragment
10-27 09:20	40m	-4 / -	HA5DI	- / -19	3	✓ Closing fragment
10-27 09:19	40m	- / -	YO3CNW	-20 / -	2	Partial capture
10-27 09:16	40m	-6 / -2	HA7TM	+9 / -	5	✓ Full exchange observed
10-27 09:16	40m	-8 / -15	ON4CN	-24 / -20	6	✓ Full exchange observed
10-27 09:16	40m	- / -	SP5EXA	+13 / -	4	Partial capture
10-27 09:13	40m	-8 / -	DF0TZ	- / -3	2	Partial capture
10-27 09:09	40m	-7 / -	TF1A	- / -19	2	Partial capture
10-27 09:03	40m	-2 / -	TF1A	- / -21	7	Partial capture
10-27 08:59	40m	-2 / -	DJ0MAB	-10 / -13	4	Partial capture
10-27 08:57	40m	-1 / -	ON5EA	- / -25	4	✓ Closing fragment
10-27 08:51	40m	-12 / -	DF0TZ	- / -19	2	Partial capture
10-16 12:57	80m	-16 / -	UX4AA	- / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
153215 +25 2395  US5AA UT5EL R+26
153230  +3 2193  UT5EL US5AA RR73
153245 +19 2395  US5AA UT5EL 73
153430  +2 2193  UX7UU US5AA +18 (x2)
153515  +6 1716  US5AA UX7UU R+00
153530  +6 2193  UX7UU US5AA RR73
153545  +9 1716  US5AA UX7UU 73
153545  -5 1827  US5AA R1BED +01
153700  +1 2192  UT1KWA US5AA +06
153715  -4 1495  US5AA UT1KWA R+01
153730  +7 2193  UT1KWA US5AA RR73
154145  +8 2192  EX7DY US5AA -06 (x3)

40m

UTC    dB Audio  Message
094315 -16 1220  US5AA DK7UY R-14
094330  +1 1220  DK7UY US5AA RR73
094400  +7 1219  F5PBG US5AA -16
094415 -11  574  US5AA PD2MAC JO22
094430  +3 1219  F5PBG US5AA RR73
094530  +4 1219  PD2MAC US5AA -19 (x3)
094800  -5 1218  CQ US5AA KO70
094815 -18 1379  US5AA PD4RJ JO33
094815 -11 1218  US5AA PA3CPS JO32
094830  +0 1218  PA3CPS US5AA +00
094845 -12 1218  US5AA PA3CPS R+01
094900  -4 1218  PA3CPS US5AA RR73
094915 -10 1218  US5AA PA3CPS 73

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.

CW

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

Explore CW reception at SO8OO

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