PA3ATW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Netherlands Most frequent locator attributed to this token: JO21

Receiver-side FT8 activity involving PA3ATW, decoded by SO8OO in southeastern Poland. 49 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-11 and 2026-09-17.

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 49 FT8 messages attributed to PA3ATW as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (88%), followed by 80 m (12%). In this small sample, the estimated median decoder S/N was -14 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-14 dB

Estimated median S/N

Bands

80m · 6 40m · 43

First attributed message: 2026-09-11
Last attributed message: 2026-09-17 23:21 UTC

Observed FT8 message patterns

Attributed sample: 49 messages
Active dates: 2 UTC dates
Estimated median S/N: -14 dB
Estimated 10th-90th percentile: -19 to -9 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 16, moderate (-15 to -9 dB) 29, strong (≥ -8 dB) 4.

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 PA3ATW in decoded directed-looking exchanges:

HZ1TT · Saudi Arabia ×2 4X5JK · Israel 9K2WA · Kuwait KS1WK · United States CT7AUT · Portugal HB9EKJ · Switzerland

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 PA3ATW

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: JO21 · 38 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,192 km (approx.)
Last such locator decoded: 2026-09-17 23:19 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	PA3ATW S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 23:21	40m	- / -	UA4FKT	+5 / -	3	Partial capture
09-17 23:17	40m	-18 / -	KS1WK	- / -11	6	✓ Closing fragment
09-17 23:13	40m	- / -	F5RRS	-19 / -	4	Partial capture
09-17 23:11	40m	-14 / -	4X5JK	- / -14	3	✓ Closing fragment
09-17 23:03	40m	-16 / -	TN8GD	- / -	9	Partial capture
09-17 23:00	40m	-12 / -	KO4VZM	- / -	5	Partial capture
09-17 22:57	40m	-13 / -16	HZ1TT	-7 / -9	9	✓ Full exchange observed
09-17 22:56	40m	-12 / -	9K2WA	- / -	2	✓ Closing fragment
09-17 22:52	80m	- / -	DO9BAU	+4 / -	13	Partial capture
09-17 22:49	80m	-14 / -	CT7AUT	-24 / -15	7	✓ Closing observed
09-17 22:26	80m	- / -	DO9BAU	+4 / -	13	Partial capture
09-17 22:23	80m	- / -11	M7CWF	-23 / -	3	Partial capture
09-17 22:18	80m	- / -9	HB9EKJ	-6 / -	2	✓ Closing fragment
09-11 20:49	40m	-12 / -	OE8DDX	- / -	3	Partial capture
09-11 20:35	40m	-8 / -	TF8KW	- / -	8	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
231215 -12 1130  4X5JK PA3ATW R-14 (x2)
231300 -20 1985  PA3ATW F5RRS JN36 (x4)
231730 -15 1130  KS1WK PA3ATW JO21 (x6)
232145  -3 1130  PA3ATW UA4FKT LO23 (x3)

80m

UTC    dB Audio  Message
225200 -24 1407  PA3ATW CT7AUT RR73
225215 -14 2107  CT7AUT PA3ATW 73
225230  +5 2402  PA3ATW DO9BAU JO62 (x13)

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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