AA4FX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EL98

Receiver-side FT8 activity involving AA4FX, decoded by SO8OO in southeastern Poland. 100 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-07-27 and 2026-09-02.

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 100 FT8 messages attributed to AA4FX as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (60%), followed by 80 m (33%) and 40 m (7%). Most decodes (95%) fell within the six-hour window 21:00-03:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (64%); the estimated median was -17 dB.

Overview

100

Messages attributed

UTC dates decoded

Active 15-min windows

-17 dB

Estimated median S/N

Bands

80m · 33 40m · 7 20m · 60

First attributed message: 2026-07-27
Last attributed message: 2026-09-02 01:02 UTC

Observed FT8 message patterns

Attributed sample: 100 messages
Active dates: 6 UTC dates
Estimated median S/N: -17 dB
Estimated 10th-90th percentile: -24 to -13 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 64, moderate (-15 to -9 dB) 36, 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.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with AA4FX in decoded directed-looking exchanges:

IK4LZH · Italy ×2 AD9AR · United States CX6TU · Uruguay DL1VCA · Fed. Rep. of Germany IK2WSA · Italy IK4TVP · Italy K8ATL · United States K8FAM · United States KE4PLU · United States KQ4EZN · United States N5WXB · United States PA4PA · Netherlands

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 AA4FX

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: EL98 · 31 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,464 km (approx.)
Last such locator decoded: 2026-09-02 00:56 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	AA4FX S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-02 00:56	40m	- / -	EA5FD	-10 / -	4	Partial capture
09-01 03:46	40m	- / -16	IZ8EYN	-8 / -	2	Partial capture
08-28 03:25	40m	- / -21	ON3ANY	-3 / -	5	✓ Closing fragment
08-28 03:17	40m	- / -14	ON3ANY	-8 / -	2	Partial capture
08-28 02:28	40m	- / -16	RA4FP	+10 / -	2	Partial capture
08-28 02:27	40m	-14 / -13	RN6HK	+4 / -11	5	Partial capture
08-28 02:23	40m	-17 / -	RI1FJL	- / -13	3	Partial capture
08-26 03:22	20m	- / -8	UA6AFS	-14 / -	2	✓ Closing fragment
08-25 20:20	20m	-16 / -3	WA4FU	-20 / -	4	✓ Full exchange observed
08-25 20:17	20m	-16 / -	KE4PLU	- / -14	2	✓ Closing fragment
08-25 20:17	20m	- / -	F5RAV	+5 / -	4	Partial capture
08-25 20:15	20m	- / -9	IK4LZH	-12 / -	3	✓ Closing fragment
08-25 20:14	20m	- / -	PD0AAZ	+2 / -	2	Partial capture
08-25 19:20	20m	- / -	IS0IYV	-16 / -	3	Partial capture
08-23 01:54	20m	-14 / -	KK6PMM	- / -25	2	Partial capture
08-23 01:50	20m	-20 / -	N0SNO	- / -13	2	Partial capture
08-23 01:46	20m	-16 / -	KK6PMM	- / -14	3	Partial capture
08-23 01:44	20m	- / -	IZ7RJT	-8 / -	2	Partial capture
08-23 01:42	20m	-14 / -	KQ4EZN	- / -12	3	✓ Closing fragment
08-23 01:37	20m	-14 / -	IS0KNG	- / -11	5	Partial capture
08-23 01:36	20m	-14 / -	W0OVX	- / -9	2	✓ Closing fragment
08-23 01:34	20m	-13 / -	DL1VCA	0 / -15	8	✓ Full exchange observed
08-23 01:31	20m	- / -11	UA6YW	-12 / -	2	Partial capture
08-23 01:31	20m	-16 / -	CX6TU	- / -14	2	✓ Closing fragment
08-23 01:30	20m	-15 / -	VE3RZC	- / -9	4	✓ Closing fragment
08-23 01:27	20m	-17 / -	K8FAM	- / -3	3	✓ Closing fragment
08-23 01:23	20m	-16 / +1	PA4PA	+9 / -18	4	✓ Full exchange observed
08-23 01:17	20m	-13 / -16	N5WXB	-18 / -9	9	✓ Full exchange observed
08-23 01:17	20m	-9 / +1	K8ATL	-10 / -	4	✓ Closing observed
08-23 01:15	20m	-12 / -	AD9AR	- / -	2	✓ Closing fragment
08-23 01:15	20m	- / -	9A3AUH	-7 / -	3	Partial capture
08-21 22:44	20m	- / -	IW2MYH	-14 / -	2	Partial capture
08-21 21:15	20m	-21 / -12	TT1GD	-16 / -	2	✓ Closing observed
08-21 02:27	20m	- / -15	RU3SD	-18 / -	5	Partial capture
08-21 02:16	20m	- / -14	RU3SD	-19 / -	2	Partial capture
08-21 02:12	20m	- / -	RU3SD	-20 / -	2	Partial capture
08-21 01:53	20m	- / -14	5Z4VJ	-8 / -	4	Partial capture
08-21 01:44	20m	- / -	DL1R	-3 / -	8	Partial capture
08-21 01:21	20m	- / -	OK2CNI	+6 / -	5	Partial capture
08-21 01:20	20m	- / -	DH2RL	-6 / -	2	Partial capture
08-12 02:21	40m	- / +10	EW4DX	-6 / -	2	✓ Closing fragment
08-12 02:19	40m	- / -14	YO6LM	-10 / -	2	Partial capture
08-12 01:47	40m	- / -9	G5TV	-20 / -	2	✓ Closing fragment
08-12 01:01	40m	- / -	G5TV	-22 / -	2	Partial capture
08-12 01:00	40m	- / -10	RN6MA	-11 / -	2	Partial capture
07-27 02:52	80m	- / -	YO3CWC	+7 / -	2	Partial capture
07-27 02:44	80m	- / -	F8NHF	+3 / -	5	Partial capture
07-27 02:36	80m	-24 / -	YV5IAL	- / -16	2	✓ Closing fragment
07-27 02:32	80m	-24 / -	VY2JGC	-18 / -13	3	✓ Closing observed
07-27 02:28	80m	- / -	W4MJH	-12 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
032845  -4 1058  AA4FX ON3ANY R-21 (x2)
034600  -6  763  AA4FX IZ8EYN -16 (x2)
005630 -19 1118  CQ AA4FX EL98
005645 -15 2394  AA4FX EA5FD IM99
005715  -9 1118  AA4FX IK6DLK JN63
005715 -10 2395  AA4FX EA5FD IM99
005745 -14 1118  AA4FX M9PXZ IO90
005745 -12 2394  AA4FX EA5FD IM99
005815 -14 1118  AA4FX PC2J JO22
005830 -17 1117  K4RCY AA4FX -03
005845  -5 2394  AA4FX EA5FD IM99
010230 -19 1117  YY4RUH AA4FX RR73
010330 -19 1949  AA4FX ER3ZW -14

20m

UTC    dB Audio  Message
201545 -11  464  AA4FX IK4LZH JN54 (x3)
201715  +3 1401  AA4FX F5RAV JN09
201730 -18 1131  KE4PLU AA4FX -14
201745  +5 1401  AA4FX F5RAV JN09
201800 -15 1132  KE4PLU AA4FX RR73
201815  +6 1401  AA4FX F5RAV JN09 (x2)
202015 -16 1247  AA4FX WA4FU -03
202030 -16 1131  WA4FU AA4FX R+12
202045 -24 1247  AA4FX WA4FU RR73
202100 -16 1131  WA4FU AA4FX 73
032215 -16 1138  AA4FX UA6AFS R-08 (x2)

80m

UTC    dB Audio  Message
024515  +3 2069  AA4FX F8NHF JO10
024530 -24 1950  CQ AA4FX EL98
024545  +3 2069  AA4FX F8NHF JO10
024600 -24 1950  KW4WD AA4FX -13
024615  +2 2069  AA4FX F8NHF JO10 (x2)
024700 -19 1950  KE0EE AA4FX -17
024800 -20 1950  CQ AA4FX EL98
024815 +10 2482  AA4FX IQ4JO JN63
024830 -20 1950  CQ AA4FX EL98 (x3)
025200 -24 1950  KE0EE AA4FX RR73
025215  +6 1938  AA4FX YO3CWC KN25 (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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