AF4OZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EM75

Receiver-side FT8 activity involving AF4OZ, decoded by SO8OO in southeastern Poland. 102 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 19 UTC dates in the available aggregate history. Observed between 2026-06-09 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 102 FT8 messages attributed to AF4OZ as the transmitting token by decoded message structure across 19 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (72%), followed by 80 m (16%) and 40 m (13%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

102

Messages attributed

UTC dates decoded

Active 15-min windows

-13 dB

Estimated median S/N

Bands

80m · 16 40m · 13 20m · 73

First attributed message: 2026-06-09
Last attributed message: 2026-09-17 00:53 UTC

Observed FT8 message patterns

Attributed sample: 102 messages
Active dates: 19 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -20 to -7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 40, moderate (-15 to -9 dB) 42, strong (≥ -8 dB) 20.

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 AF4OZ in decoded directed-looking exchanges:

PI4DX · Netherlands ×2 F6AOJ · France ×2 TN8GD · Republic of the Congo ×2 4Z5PG · Israel 5Z4VJ · Kenya 9H2TM · Malta DL3MIB · Fed. Rep. of Germany EA4HEW · Spain EA6C · Balearic Islands M0OVG · England RX9ABI · Asiatic Russia 4X1TI · Israel

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 AF4OZ

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: EM75 · 66 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,113 km (approx.)
Last such locator decoded: 2026-09-17 00:53 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	AF4OZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-10 08:25	40m	- / -20	DK7ZT	-5 / -	2	Partial capture
09-10 00:10	80m	- / -	CT7AUT	-24 / -	2	Partial capture
09-10 00:09	80m	- / -18	EA1AUO	-22 / -	7	Partial capture
09-10 00:09	80m	- / -18	F6AOJ	-1 / -	3	✓ Closing fragment
09-08 01:29	80m	- / -	SV8JE	+17 / -	4	Partial capture
09-08 01:27	80m	- / -	PE0JBE	-1 / -	3	Partial capture
09-07 01:33	80m	- / -	EA3LF	-3 / -	3	Partial capture
09-05 21:48	40m	- / -9	VP2MAA	-18 / -	2	Partial capture
09-03 01:05	40m	- / -	LZ3RG	-6 / -	4	Partial capture
09-03 01:03	40m	-19 / -	HK0RMR	- / -3	7	✓ Closing fragment
09-03 00:55	40m	- / -10	SV9QWC	-14 / -	2	Partial capture
09-01 23:56	40m	- / -	G5TV	-11 / -	2	Partial capture
08-26 00:47	80m	- / -16	TF3VS	-10 / -	2	Partial capture
08-22 00:18	80m	- / -	DL1CC	-4 / -	2	Partial capture
08-22 00:17	80m	- / -14	DH1KJ	-7 / -	3	Partial capture
08-22 00:17	80m	- / -20	OH1MLZ	+5 / -	2	✓ Closing fragment
08-21 00:09	80m	- / -15	EA8AJ	-22 / -	5	Partial capture
08-20 01:26	80m	- / -	DK5WL	-7 / -	3	Partial capture
08-20 01:23	80m	-23 / -11	OK1XV	+10 / -15	4	✓ Full exchange observed
08-17 01:03	80m	- / -	TF4M	-18 / -	2	Partial capture
08-16 00:26	80m	- / -16	LA9GX	+6 / -	2	✓ Closing fragment
08-15 00:41	80m	- / -22	SP1MGM	+8 / -	6	Partial capture
08-15 00:37	80m	- / -17	G0OYQ	-2 / -	4	✓ Closing fragment
08-15 00:26	80m	-24 / -16	DK7ZT	0 / -17	5	✓ Full exchange observed
08-15 00:25	80m	-24 / -16	OZ8ABA	+8 / -	3	✓ Closing observed
08-11 01:03	80m	- / -14	UR1CCT	+10 / -	3	Partial capture
08-11 01:02	80m	- / -18	SP6JIU	+20 / -	3	✓ Closing fragment
08-11 00:00	40m	- / -	RN6HK	-8 / -	2	Partial capture
08-09 01:19	80m	-24 / -20	LZ2KTS	+9 / -	4	✓ Closing observed
08-09 01:13	80m	- / -11	CT3MD	-15 / -	2	✓ Closing fragment
08-03 23:42	40m	- / -15	M5LMG	-8 / -	2	Partial capture
08-03 01:28	80m	- / -15	SV8JE	+10 / -	2	Partial capture
08-01 01:31	40m	- / -	PE1NPS	-13 / -	3	Partial capture
08-01 01:03	40m	- / -	F8NHF	-13 / -	2	Partial capture
08-01 01:00	40m	- / -14	RA4FW	-2 / -	2	✓ Closing fragment
08-01 00:54	40m	- / -12	9A3AUH	-10 / -	2	✓ Closing fragment
08-01 00:47	40m	- / -5	OO0O	-8 / -	2	✓ Closing fragment
08-01 00:42	40m	- / -9	9A3AUH	-13 / -	2	Partial capture
08-01 00:37	40m	- / -11	9A3AUH	-12 / -	2	Partial capture
08-01 00:08	40m	- / -17	UT5ZC	-6 / -	2	✓ Closing fragment
07-31 01:31	40m	- / -6	F5PBG	-18 / -	4	✓ Closing fragment
07-30 01:22	40m	- / -12	RG5A	+1 / -	3	Partial capture
07-30 00:53	40m	- / -14	UT5ZC	-2 / -	2	Partial capture
07-30 00:01	40m	- / -	F5PBG	-21 / -	5	Partial capture
07-29 00:41	40m	- / -7	DK8HC	-10 / -	3	Partial capture
07-29 00:39	40m	- / -18	E72ET	-16 / -	7	Partial capture
07-28 01:18	40m	- / -13	DJ0MAB	-9 / -	3	Partial capture
07-28 00:27	40m	- / -	DK8HC	-8 / -	2	Partial capture
07-28 00:14	40m	- / -	DJ0MAB	-10 / -	2	Partial capture
07-27 23:43	40m	- / -15	EC3A	-22 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
010530  -5 2123  AF4OZ LZ3RG KN12
010545 -21 2125  HK0RMR AF4OZ -03
010600  -6 2124  AF4OZ LZ3RG KN12 (x2)
010645 -20 2125  HK0RMR AF4OZ EM75 (x4)
214800 -19 1248  AF4OZ VP2MAA -09 (x2)
082500  -5 1906  AF4OZ DK7ZT -20 (x2)
082800 -16 2273  AF4OZ G3AKA IO90
004945 -16  987  D2ACE AF4OZ EM75
005345 -21 1633  8R1TM AF4OZ EM75

80m

UTC    dB Audio  Message
013015 +14  349  AF4OZ SV8JE KM08 (x3)
000900  -5 1604  AF4OZ F6AOJ -18 (x2)
000930 -19 2001  AF4OZ EA1AUO -18 (x2)
001030  -1 1604  AF4OZ F6AOJ 73
001030 -22 2001  AF4OZ EA1AUO -18
001030 -24 1525  AF4OZ CT7AUT IM67
001100 -21 2001  AF4OZ EA1AUO -18
001100 -24 1525  AF4OZ CT7AUT IM67
001130 -19 2001  AF4OZ EA1AUO -18 (x3)

20m

UTC    dB Audio  Message
232700  -4  577  AF4OZ T77RN R-07 (x2)
234815 -13 1921  AF4OZ EA4HEW -12 (x3)
220000 -15 1509  AF4OZ YT2YZ R-06
231930 -13  650  AF4OZ PA3KUS JO21
225700  -7  268  AF4OZ RA3ZH KO81
225700 -13 1107  AF4OZ DL3MIB JN57
225730  -4  267  AF4OZ RA3ZH KO81
225730 -13 1107  AF4OZ DL3MIB JN57 (x2)
225830  -7  268  AF4OZ RA3ZH KO81
225830 -10 1107  AF4OZ DL3MIB 73
225915 -17 1121  AF4OZ IS0/IK2YCW R-14

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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