AA1SU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FN34

Receiver-side FT8 activity involving AA1SU, decoded by SO8OO in southeastern Poland. 464 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 15 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-09-06.

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 464 FT8 messages attributed to AA1SU as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (67%), followed by 40 m (17%) and 80 m (16%). Most decodes (100%) fell within the six-hour window 21:00-03:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

464

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

80m · 74 40m · 80 20m · 310

First attributed message: 2026-06-12
Last attributed message: 2026-09-06 01:49 UTC

Observed FT8 message patterns

Attributed sample: 464 messages
Active dates: 15 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -21 to -4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 120, moderate (-15 to -9 dB) 194, strong (≥ -8 dB) 150.

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 AA1SU in decoded directed-looking exchanges:

F1PBZ · France ×3 VE2FVV · Canada ×2 CT2GQA · Portugal ×2 OK1JMB · Czech Republic AA0KW · United States R4HGP · European Russia VE1VAI · Canada M9PAS · England DO1ID · Fed. Rep. of Germany YT1DDL · Serbia K1QKZ · United States W4JHV · 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 AA1SU

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: FN34 · 216 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 6,686 km (approx.)
Last such locator decoded: 2026-08-26 23:16 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	AA1SU S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-06 01:39	80m	- / -17	DF8AA	+12 / -	4	✓ Closing fragment
08-31 00:37	40m	- / -	F4EDB	-12 / -	2	Partial capture
08-31 00:26	40m	- / -10	EA5HM	-12 / -	4	✓ Closing fragment
08-31 00:24	40m	- / -	TA4SSK	-1 / -	6	Partial capture
08-31 00:20	40m	- / -	SQ4VW	-10 / -	2	Partial capture
08-31 00:20	40m	- / -8	EA2CD	+3 / -	4	✓ Closing fragment
08-30 18:18	20m	- / -	EA1EMO	+2 / -	2	Partial capture
08-26 23:18	40m	- / -15	EA3RKM	-14 / -	3	Partial capture
08-26 23:16	40m	- / -13	EA3HKY	-14 / -	2	Partial capture
08-26 23:14	40m	-17 / -15	EA3HLM	-14 / -18	5	✓ Full exchange observed
08-26 23:08	40m	- / -15	DC7OT	+1 / -	4	✓ Closing fragment
08-22 02:35	40m	-21 / -20	R3KED	+2 / -24	3	Partial capture
08-22 02:34	40m	-22 / -17	DL6RS	-8 / -12	8	✓ Full exchange observed
08-22 02:34	40m	- / -13	RD7LC	+2 / -	2	✓ Closing fragment
08-22 02:29	40m	-21 / -	W9EEU	- / -7	5	✓ Closing fragment
08-22 02:23	40m	- / -	US1CR	-8 / -	2	Partial capture
08-22 02:21	40m	-18 / -	W4KCM	- / +4	3	✓ Closing fragment
08-22 02:17	40m	-22 / -	K4HFY	- / -9	3	✓ Closing fragment
08-22 02:16	40m	-21 / -	W5COE	- / 0	3	✓ Closing fragment
08-22 02:13	40m	-22 / -16	M9PAS	-6 / -13	7	✓ Full exchange observed
08-22 02:12	40m	-21 / -15	UT4VL	-11 / -23	5	✓ Full exchange observed
08-22 02:09	40m	-19 / -	AA4JW	- / +1	2	✓ Closing fragment
08-22 02:07	40m	- / -12	RD7O	+4 / -	3	✓ Closing fragment
08-22 02:04	40m	- / -5	R2AL	+14 / -	4	✓ Closing fragment
08-22 02:01	40m	- / -	RD7O	+5 / -	4	Partial capture
08-22 02:01	40m	-20 / -	KQ4IKT	- / -6	2	✓ Closing fragment
08-22 02:00	40m	- / -	R3XBS	+3 / -	4	Partial capture
08-22 01:58	40m	-22 / -	VA2KFU	- / +4	2	✓ Closing fragment
08-20 01:57	80m	-10 / -13	SP7IIT	+7 / -12	4	✓ Full exchange observed
08-20 01:43	80m	-12 / -14	F4IFK	-12 / -12	6	✓ Full exchange observed
08-20 01:28	80m	- / -11	EA8AR	-24 / -	3	✓ Closing fragment
08-20 01:28	80m	- / -	DL1UDO	-12 / -	2	Partial capture
08-19 23:14	20m	- / -18	IU3MDI	-6 / -	8	Partial capture
08-19 23:11	20m	-3 / -	KJ5CYH	- / -18	3	Partial capture
08-19 23:07	20m	-6 / -17	TA3F	-7 / -24	6	✓ Full exchange observed
08-19 23:04	20m	-4 / -	KJ5CYH	- / -18	4	Partial capture
08-19 23:00	20m	-7 / -	F4ACR	- / 0	3	✓ Closing fragment
08-19 22:56	20m	-6 / +5	T77RN	+3 / -20	5	✓ Full exchange observed
08-19 22:52	20m	- / -3	T77RN	+6 / -	2	Partial capture
08-19 22:51	20m	-3 / -	PD0DNA	-6 / -23	12	✓ Closing observed
08-19 22:47	20m	-1 / -2	F1PBZ	-3 / 0	3	✓ Full exchange observed
08-14 01:50	80m	- / -	SA4AGM	-10 / -	8	Partial capture
08-14 01:50	80m	- / -	9A3AUH	+6 / -	13	Partial capture
08-14 01:49	80m	-18 / -	K2IY	- / -2	2	✓ Closing fragment
08-14 01:47	80m	- / -	DO8JB	0 / -	11	Partial capture
08-14 01:46	80m	-18 / -13	DO5HB	0 / -15	6	✓ Full exchange observed
08-14 01:43	80m	-24 / -10	DO1ID	+18 / -7	4	✓ Full exchange observed
08-14 01:43	80m	- / -	EA8AR	-10 / -	4	Partial capture
08-14 01:40	80m	- / -15	IK5CHL	+8 / -	3	✓ Closing fragment
08-14 01:38	80m	-13 / -	KB3UJT	- / 0	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
015245  -9 2953  CQ AA1SU FN34 (x5)
015615  -9 2953  CT2GQA AA1SU RR73
015700 +10 1858  AA1SU SP7IIT KO00
015715 -10 2953  SP7IIT AA1SU -12
015730 +10 1858  AA1SU SP7IIT R-13 (x2)
013915 +13 2788  AA1SU DF8AA JO60 (x4)
014930 -23 3053  PT2TD AA1SU -21

40m

UTC    dB Audio  Message
002400  +2 2835  AA1SU TA4SSK KM57 (x6)
002630 -14 1642  AA1SU EA5HM IM99 (x4)
003030 -10 2835  AA1SU DL1SRS R-14
003700  -4 1191  AA1SU SP3JZR JO71
003730 -11 1676  AA1SU F4EDB IN96 (x2)
004000  -8 2532  AA1SU SP3JZR JO71

20m

UTC    dB Audio  Message
231300  -7 2971  CQ AA1SU FN34                         a1
231415  -4 2226  AA1SU IU3MDI JN55 (x8)
234945  -8 3020  CQ AA1SU FN34                         a1 (x2)
174400 -17 2708  AA1SU IZ0GRR 73
174700 -14 3071  AA1SU DK7QJ JO41
181800  +8 2359  AA1SU EA1EMO IN52 (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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