AC8AP — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States

Receiver-side FT8 activity involving AC8AP, decoded by SO8OO in southeastern Poland. 6 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-08-21.

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 6 FT8 messages attributed to AC8AP 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 (83%), followed by 20 m (17%). In this small sample, the estimated median decoder S/N was -18 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-18 dB

Estimated median S/N

Bands

40m · 5 20m · 1

First attributed message: 2026-06-09
Last attributed message: 2026-08-21 03:33 UTC

Observed FT8 message patterns

Attributed sample: 6 messages
Active dates: 2 UTC dates
Estimated median S/N: -18 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 0.

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 AC8AP in decoded directed-looking exchanges:

EA5HM · Spain KJ5GNR · United States SP7NC · Poland DL8MKG · Fed. Rep. of Germany HB9CXZ · Switzerland SP6JIU · Poland

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	AC8AP S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-21 03:29	40m	-18 / -20	EA5HM	-6 / -9	9	✓ Closing observed
08-21 03:28	40m	-19 / -	KJ5GNR	- / -2	2	✓ Closing fragment
08-21 03:27	40m	- / -12	K4YT	-22 / -	4	Partial capture
08-21 02:46	80m	- / -	DK5WL	+6 / -	3	Partial capture
08-21 02:32	80m	- / -	DL1BJL	-20 / -	2	Partial capture
08-21 02:31	80m	- / -14	SP6JIU	+24 / -	3	✓ Closing fragment
08-21 01:59	80m	- / -16	DH1KJ	+6 / -	2	Partial capture
08-21 01:57	80m	- / -7	DL8MKG	+22 / -	2	✓ Closing fragment
08-21 01:49	80m	- / -15	DK7ZT	+6 / -	5	Partial capture
08-06 02:36	20m	- / -	HB9TIH	-18 / -	4	Partial capture
08-01 05:34	40m	- / -	F8NHF	-12 / -	7	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
032830 -22 1830  AC8AP K4YT FM19
032845 -18 1831  KJ5GNR AC8AP -02
032900 -23 1830  AC8AP K4YT FM19
032915 -20 1830  KJ5GNR AC8AP RR73
032930  -6 1537  AC8AP EA5HM IM99
033000 -22 1830  AC8AP K4YT R-12
033000  -8 1538  AC8AP EA5HM IM99 (x2)
033115 -16 1830  EA5HM AC8AP RR73
033130  -6 1538  AC8AP EA5HM R-20 (x2)
033215 -18 1830  SP7NC AC8AP RR73
033230 -10 1538  AC8AP EA5HM R-20 (x2)
033315 -19 1830  EA5HM AC8AP R-09

80m

UTC    dB Audio  Message
015015  +3 1898  AC8AP DK7ZT -15 (x3)
015715 +22 2598  AC8AP DL8MKG -07 (x2)
015945  +5  681  AC8AP DH1KJ -16 (x2)
023130 +25 2900  AC8AP SP6JIU -14 (x3)
023230 -20 1870  AC8AP DL1BJL JO33 (x2)
024645  +8 1514  AC8AP DK5WL JN39 (x3)

20m

UTC    dB Audio  Message
023630 -17 1977  AC8AP HB9TIH JN36 (x4)
125830 -14  789  AC8AP MW3FLI -06

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