AI3Z — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FM19

Receiver-side FT8 activity involving AI3Z, decoded by SO8OO in southeastern Poland. 41 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-07-03 and 2026-09-04.

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 41 FT8 messages attributed to AI3Z as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (41%), followed by 20 m (34%) and 80 m (24%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (66%); the estimated median was -4 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-4 dB

Estimated median S/N

Bands

80m · 10 40m · 17 20m · 14

First attributed message: 2026-07-03
Last attributed message: 2026-09-04 01:12 UTC

Observed FT8 message patterns

Attributed sample: 41 messages
Active dates: 3 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -16 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 9, strong (≥ -8 dB) 27.

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 AI3Z in decoded directed-looking exchanges:

A92AE · Bahrain 8Q7PR · Maldives W9MDM · United States IQ4JO · Italy K2G · 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 AI3Z

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: FM19 · 22 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,310 km (approx.)
Last such locator decoded: 2026-09-04 01:12 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	AI3Z S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-04 01:10	40m	-4 / -	RI1FJL	- / -	3	Partial capture
09-03 00:34	40m	-5 / -	W9MDM	- / +3	2	✓ Closing fragment
09-03 00:32	40m	-2 / -	8Q7PR	-17 / -5	3	✓ Closing observed
09-03 00:31	40m	-2 / -	4O7CC	- / -	2	Partial capture
09-03 00:29	40m	-1 / -	TL8GD	- / -	4	Partial capture
08-05 00:24	80m	- / -	HB9MZI	-14 / -	4	Partial capture
08-05 00:22	80m	- / -	CT2GQA	-8 / -	3	Partial capture
08-05 00:16	80m	- / -	DO5UH/P	+4 / -	3	Partial capture
08-05 00:15	80m	- / -15	IQ4JO	+1 / -	3	✓ Closing fragment
07-03 01:27	40m	-15 / -	K2K	- / -12	4	Partial capture
07-03 00:40	80m	-16 / -	K2G	- / 0	10	✓ Closing fragment
07-03 00:34	20m	-1 / -	UA0AV	- / -17	2	Partial capture
07-03 00:30	20m	0 / -	<...>	- / -	2	Partial capture
07-03 00:27	20m	-3 / -	A92AE	- / -8	5	✓ Closing fragment
07-03 00:18	20m	- / -16	UA9CR	-8 / -	2	Partial capture
07-03 00:16	20m	-3 / -	<...>	- / -	5	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
002915  -1 2271  TL8GD AI3Z FM19 (x4)
003115  +0 2272  4O7CC AI3Z FM19 (x2)
003245  -2 2177  8Q7PR AI3Z R-05
003300 -17  855  AI3Z 8Q7PR RR73
003315  -3 2177  8Q7PR AI3Z 73
003330 -13 2187  AI3Z IK6DLK JN63
003445  -5 2177  W9MDM AI3Z +03 (x2)
011045  -5 2228  RI1FJL AI3Z FM19 (x3)

80m

UTC    dB Audio  Message
005030 -11  688  K2G AI3Z RR73 (x2)
001545  +1 2285  AI3Z IQ4JO JN63 (x2)
001615  +3  602  AI3Z DO5UH/P JO61
001645  +0 2285  AI3Z IQ4JO 73
001645  +2  602  AI3Z DO5UH/P JO61 (x2)
002245  -7  842  AI3Z CT2GQA IM58 (x3)
002445 -15  842  AI3Z HB9MZI JN46 (x4)

20m

UTC    dB Audio  Message
001645  -4 2538  <...> AI3Z FM19 (x3)
001800 -11  311  AI3Z UA9CR -16
001815  -2 2537  <...> AI3Z +14
001830  -4  311  AI3Z UA9CR -16
002715  -2 2537  A92AE AI3Z R-08 (x5)
003045  +0 2536  <...> AI3Z FM19 (x2)
003415  -2 2537  UA0AV AI3Z -17 (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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