AA4DD — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EM86

Receiver-side FT8 activity involving AA4DD, decoded by SO8OO in southeastern Poland. 140 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-22 and 2026-09-05.

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 140 FT8 messages attributed to AA4DD as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (99%), followed by 40 m (1%). In this small sample, the estimated median decoder S/N was -11 dB; no usual signal pattern is inferred.

Overview

140

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

40m · 1 20m · 139

First attributed message: 2026-08-22
Last attributed message: 2026-09-05 04:52 UTC

Observed FT8 message patterns

Attributed sample: 140 messages
Active dates: 2 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -18 to -3 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 24, moderate (-15 to -9 dB) 69, strong (≥ -8 dB) 47.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with AA4DD in decoded directed-looking exchanges:

E74PA · Bosnia-Herzegovina ON4FL · Belgium IZ2QPP · Italy RU4SO · European Russia DL8WEM · Fed. Rep. of Germany G0BLB · England UT5ECZ · Ukraine ON4JL · Belgium YT1DDL · Serbia HB9TIH · Switzerland F4LNM · France DG4YIR · Fed. Rep. of Germany

Most frequent locator attributed to AA4DD

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: EM86 · 38 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,911 km (approx.)
Last such locator decoded: 2026-09-05 04:52 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	AA4DD S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-06 05:22	60m	- / -	LA9H	-16 / -	4	Partial capture
09-06 05:09	60m	- / -17	G4ZFJ	-3 / -	8	✓ Closing fragment
09-06 05:08	60m	- / -	DL1GLO	-6 / -	4	Partial capture
09-06 05:08	60m	- / -20	G0AZH	-10 / -	4	Partial capture
09-06 05:05	60m	- / -	LA9H	-10 / -	3	Partial capture
09-06 05:02	60m	- / -17	DK7ZT	-19 / -	4	Partial capture
09-06 05:01	60m	- / -14	LA1QRO	-12 / -	2	✓ Closing fragment
09-05 05:07	40m	- / -8	IZ2QPP	+1 / -	3	✓ Closing fragment
09-05 05:06	40m	- / -	DM2BM	+4 / -	2	Partial capture
09-05 05:03	40m	- / -20	F5RRS	-4 / -	5	Partial capture
09-05 05:00	40m	- / -13	ON4FL	-16 / -	5	✓ Closing fragment
09-05 04:58	40m	- / -2	F4AWT	-7 / -	3	✓ Closing fragment
09-05 04:58	40m	- / -	YT1DDL	-13 / -	3	Partial capture
09-05 04:55	40m	- / -15	DL3OCF	+3 / -	6	✓ Closing fragment
09-05 04:53	40m	- / -	HB9IRO	+3 / -	5	Partial capture
09-05 04:52	40m	- / -14	SV8NAJ	-21 / -	2	Partial capture
09-05 04:50	40m	- / -	OZ1LDO	-5 / -	5	Partial capture
09-05 04:49	40m	- / -	PC2J	-3 / -	5	Partial capture
09-05 04:47	40m	- / -	DF8RU	+11 / -	3	Partial capture
09-05 04:46	40m	- / -10	DL3OCF	-2 / -	2	Partial capture
09-05 04:45	40m	- / -	PC2J	-7 / -	4	Partial capture
09-05 04:43	40m	- / -	K4YT	-14 / -	2	Partial capture
09-05 04:40	40m	- / -10	F1PBZ	-18 / -	3	✓ Closing fragment
09-05 04:40	40m	- / -	PC2J	-8 / -	3	Partial capture
08-22 05:31	20m	- / -	5B4ARQ	-18 / -	3	Partial capture
08-22 05:30	20m	- / -18	I7NOT	-14 / -	3	✓ Closing fragment
08-22 05:26	20m	- / -	ON3MV	-6 / -	2	Partial capture
08-22 05:25	20m	- / -3	F4IIX	-7 / -	5	✓ Closing fragment
08-22 05:21	20m	-15 / -13	IK2YJC	-7 / -	2	✓ Closing observed
08-22 05:20	20m	-10 / -21	RU4SO	+6 / -16	4	✓ Full exchange observed
08-22 05:19	20m	- / -16	F4MZI	+1 / -	5	Partial capture
08-22 05:16	20m	-9 / -8	F4VTR	-4 / -13	4	Partial capture
08-22 05:09	20m	-12 / -	LZ3BS	- / -17	2	Partial capture
08-22 05:07	20m	- / -9	IT9PHU	+1 / -	9	Partial capture
08-22 05:06	20m	-11 / -	E74PA	- / -9	2	✓ Closing fragment
08-22 05:05	20m	- / -	RU3DNN	-4 / -	3	Partial capture
08-22 05:03	20m	-15 / -	KE2ECK	- / -13	2	✓ Closing fragment
08-22 05:02	20m	-18 / -	YO8DHD	- / -17	2	✓ Closing fragment
08-22 05:00	20m	-12 / -	G7VIL	- / -12	2	✓ Closing fragment
08-22 05:00	20m	- / -	R6TA	+2 / -	6	Partial capture
08-22 04:59	20m	- / -13	R6ZAA	-21 / -	3	Partial capture
08-22 04:58	20m	-12 / -	DL5XAT	- / -16	2	✓ Closing fragment
08-22 04:56	20m	-10 / -	UR4QFP	- / -14	2	✓ Closing fragment
08-22 04:55	20m	-12 / -	N1KSY	- / -10	2	✓ Closing fragment
08-22 04:53	20m	-16 / -	KC2NDA	- / -7	2	Partial capture
08-22 04:51	20m	-10 / -	DG4YIR	+15 / -11	2	✓ Closing observed
08-22 04:49	20m	-15 / +7	DL8WEM	-8 / -6	5	✓ Full exchange observed
08-22 04:48	20m	-14 / 0	IT9CCB	+6 / -3	5	✓ Full exchange observed
08-22 04:46	20m	-12 / -2	LZ3CB	-8 / -	5	✓ Full exchange observed
08-22 04:43	20m	- / -7	PA0ARR	-17 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
050945 -11  581  AA4DD G0AZH R-20
050945  -6  934  AA4DD G4ZFJ JO01
050945  -5 2175  AA4DD DL1GLO JN47
051015 -10  581  AA4DD G0AZH R-20
051015  -1  934  AA4DD G4ZFJ JO01
051015  -5 2175  AA4DD DL1GLO JN47
051045  +2  934  AA4DD G4ZFJ JO01 (x5)
052245 -15 1690  AA4DD LA9H JO59 (x4)

40m

UTC    dB Audio  Message
050130  -6 2338  AA4DD F4FCE 73
050130 -12 1370  AA4DD ON4FL JO11 (x2)
050330  +1 1891  AA4DD F5RRS JN36
050330 -17 1370  AA4DD ON4FL 73
050400  +1 1891  AA4DD F5RRS JN36 (x4)
050600  +3 2338  AA4DD DM2BM JO54 (x2)
050700  -2  424  AA4DD IZ2QPP JN46 (x3)
051030  -7  231  AA4DD Z34K KN01

20m

UTC    dB Audio  Message
052645  -9 1754  AA4DD F4IIX IN95
052645  -6 1985  AA4DD ON3MV JO21
052645 -20 1815  AA4DD DL8ZBA 73
052715  -5 1754  AA4DD F4IIX R-03 (x2)
052745  -7 1985  AA4DD ON3MV JO21
052800 -18 2090  CQ AA4DD EM86
052830 -18 2089  N3FMC AA4DD R-06
052945 -14 3121  AA4DD US5QRZ KN77
053015 -19 2091  AA4DD I7NOT R-18 (x3)
053145 -20 2090  AA4DD 5B4ARQ KM64 (x3)

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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