AC1KZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FN42

Receiver-side FT8 activity involving AC1KZ, decoded by SO8OO in southeastern Poland. 132 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-28 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 132 FT8 messages attributed to AC1KZ as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (72%), followed by 40 m (28%). Several six-hour UTC windows tied for the largest share (72%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (70%); the estimated median was -6 dB.

Overview

132

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

40m · 37 20m · 95

First attributed message: 2026-08-28
Last attributed message: 2026-09-04 05:01 UTC

Observed FT8 message patterns

Attributed sample: 132 messages
Active dates: 3 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -13 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 34, strong (≥ -8 dB) 92.

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 AC1KZ in decoded directed-looking exchanges:

DK8HC · Fed. Rep. of Germany K2UC · 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 AC1KZ

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: FN42 · 48 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 6,716 km (approx.)
Last such locator decoded: 2026-09-04 04:19 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	AC1KZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-04 05:00	40m	-18 / -	RI1FJL	- / -14	2	Partial capture
09-04 05:00	40m	- / -	DH2KAB	-6 / -	3	Partial capture
09-04 04:59	40m	- / -15	MI0OBC	-3 / -	4	Partial capture
09-04 04:54	40m	-12 / -	RI1FJL	- / -14	5	Partial capture
09-04 04:48	40m	-11 / -	RI1FJL	- / -24	6	Partial capture
09-04 04:42	40m	- / -15	R2SN	+2 / -	2	Partial capture
09-04 04:41	40m	-13 / -	RI1FJL	- / -24	4	Partial capture
09-04 04:32	40m	-13 / -	RI1FJL	- / -20	9	Partial capture
09-04 04:28	40m	- / -14	SP7XIF	0 / -	2	Partial capture
09-04 04:21	40m	- / -17	SP6AMI	+1 / -	3	Partial capture
09-04 04:19	40m	-9 / -	RI1FJL	- / -17	9	Partial capture
09-04 04:19	40m	- / -16	SP7XIF	+4 / -	13	Partial capture
09-04 03:50	40m	-6 / -	RI1FJL	- / -	2	Partial capture
08-30 21:49	20m	-3 / -	RI1FJL	- / -	14	Partial capture
08-30 21:34	20m	- / +1	MI7XHT	-5 / -	2	Partial capture
08-30 21:29	20m	-13 / -	SP4TKA	- / -10	2	Partial capture
08-30 21:25	20m	-8 / -	IU0VOG	- / -9	6	Partial capture
08-30 21:24	20m	-8 / -	DK8HC	- / -9	2	✓ Closing fragment
08-30 21:14	20m	-3 / -	RI1FJL	- / -	8	Partial capture
08-30 21:01	20m	-7 / -	RI1FJL	- / -	11	Partial capture
08-30 20:48	20m	-9 / -	K2UC	- / -15	3	✓ Closing fragment
08-30 20:37	20m	-8 / -	RI1FJL	- / -	9	Partial capture
08-28 23:00	20m	0 / -	RI1FJL	- / +9	3	Partial capture
08-28 22:52	20m	-1 / -	RI1FJL	- / 0	10	Partial capture
08-28 22:37	20m	-1 / -	RI1FJL	- / +1	3	Partial capture
08-28 22:30	20m	-3 / -	RI1FJL	- / +1	4	Partial capture
08-28 22:09	20m	-1 / -	RI1FJL	- / +1	18	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
045145  -9  457  RI1FJL AC1KZ R-22 (x6)
045900  -5 2778  AC1KZ MI0OBC -15 (x4)
050030  -4  371  AC1KZ DH2KAB JO30
050045 -17 2008  RI1FJL AC1KZ R-14
050100  -5  371  AC1KZ DH2KAB JO30 (x2)
050145 -19 2008  RI1FJL AC1KZ R-14

20m

UTC    dB Audio  Message
214915  -5  629  RI1FJL AC1KZ FN42 (x4)
215130  -3  628  AC1KZ 9K2ET LL39
215145  -6  629  RI1FJL AC1KZ FN42 (x10)

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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