F5OZK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: JN23

Receiver-side FT8 activity involving F5OZK, decoded by SO8OO in southeastern Poland. 1,272 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 12 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-03.

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 1,272 FT8 messages attributed to F5OZK as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (86%), followed by 20 m (9%) and 10 m (5%). Most decodes (79%) fell within the six-hour window 23:00-05:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (89%); the estimated median was -1 dB.

Overview

1,272

Messages attributed

UTC dates decoded

130

Active 15-min windows

-1 dB

Estimated median S/N

Bands

40m · 1,099 20m · 111 10m · 62

First attributed message: 2026-06-06
Last attributed message: 2026-10-03 05:14 UTC

Observed FT8 message patterns

Attributed sample: 1,272 messages
Active dates: 12 UTC dates
Estimated median S/N: -1 dB
Estimated 10th-90th percentile: -9 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 40, moderate (-15 to -9 dB) 105, strong (≥ -8 dB) 1,127.

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 F5OZK in decoded directed-looking exchanges:

4X1YY · Israel A61EK · United Arab Emirates BH4ECL · China CN2DX · Morocco CS8ABF · Azores EP2AES · Iran R0AW · Asiatic Russia UA2FFD · Kaliningrad K1LNF · United States KA4JRY · United States KC3SDJ · United States KC3WOX · 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 F5OZK

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: JN23 · 1,104 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,462 km (approx.)
Last such locator decoded: 2026-10-03 05:14 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	F5OZK S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-03 05:13	40m	-8 / -	KJ5PTH	- / -	3	Partial capture
10-03 05:11	40m	-6 / -	KC3SDJ	- / +7	3	✓ Closing fragment
10-03 05:09	40m	-8 / -	KJ5PTH	- / -	2	Partial capture
10-03 05:02	40m	-4 / -	KJ5PTH	- / -18	6	Partial capture
10-03 04:46	40m	-8 / -	W1JHK	- / -8	4	✓ Closing fragment
10-03 04:45	40m	-6 / -	K8SSN	- / -	2	Partial capture
10-03 04:24	40m	+2 / -	KQ4PFG	- / -	6	Partial capture
10-03 04:21	40m	+3 / -	K8SSN	- / -	3	Partial capture
10-03 04:18	40m	-2 / -	NZ1VA	- / -12	4	✓ Closing fragment
10-03 04:14	40m	+2 / -	N0QIO	- / -	2	Partial capture
10-03 04:05	40m	+6 / -	WB8UPO	- / -	2	Partial capture
10-03 04:01	40m	+4 / -	KE2KE	- / 0	3	Partial capture
10-03 03:57	40m	+4 / -	KE2KE	- / -	2	Partial capture
10-03 03:54	40m	+2 / -	K8SMS	- / -	2	Partial capture
10-03 03:52	40m	+3 / -	NZ1VA	- / -	2	Partial capture
10-03 03:50	40m	+2 / -	KE2KE	- / -	2	Partial capture
10-03 03:48	40m	0 / -	K1MRM	- / -	2	Partial capture
10-03 03:45	40m	+1 / -	KE2KE	- / -	3	Partial capture
10-03 03:39	40m	+6 / -	WA2HIP	- / -	6	Partial capture
10-03 03:34	40m	+3 / -	NP4VA	- / -	3	Partial capture
10-03 03:33	40m	+2 / -	WB3JSZ	- / -	2	Partial capture
10-03 03:22	40m	+6 / -	K8SSN	- / -	2	Partial capture
10-03 03:20	40m	+4 / -	N4SIM	- / -	2	Partial capture
10-03 03:15	40m	0 / -	WP4TUN	- / -	2	Partial capture
10-03 03:10	40m	-4 / -	N9FME	- / -	2	Partial capture
10-03 02:59	40m	+3 / -	W4SDX	- / -	2	Partial capture
10-03 02:56	40m	+3 / -	WP4TUN	- / -	3	Partial capture
10-03 02:51	40m	+4 / -	WP4TUN	- / -	2	Partial capture
10-03 02:46	40m	+5 / -	K2TTA	- / -	5	Partial capture
10-03 02:32	40m	+7 / -	KC3VTK	- / -	3	Partial capture
10-03 02:30	40m	+6 / -	K0PT	- / -	3	Partial capture
10-03 02:27	40m	+6 / -	K2FDM	- / -	3	Partial capture
10-03 02:24	40m	+4 / -	WP4TUN	- / -	3	Partial capture
10-03 02:21	40m	+7 / -	K8DXR	- / -6	4	Partial capture
10-03 02:18	40m	0 / -	N8WH	- / -19	3	Partial capture
10-03 02:14	40m	+5 / -	N4QEP	- / -	3	Partial capture
10-03 02:08	40m	-2 / -	N2LQH	- / -	3	Partial capture
10-03 02:03	40m	-1 / -	N5WXB	- / -3	4	Partial capture
10-03 02:02	40m	+5 / -	N2LQH	- / -	2	Partial capture
10-03 01:58	40m	+4 / -	WA9BZW	- / -14	4	✓ Closing fragment
10-03 01:55	40m	+3 / -	N5WXB	- / -	3	Partial capture
10-03 01:54	40m	+5 / -	N9NTC	- / -21	3	✓ Closing fragment
10-03 01:50	40m	+4 / -	KA5PUD	- / -	3	Partial capture
10-03 01:48	40m	-1 / -	KD2TDA	- / -16	3	✓ Closing fragment
10-03 01:45	40m	+2 / -	KD5USA	- / -	4	Partial capture
10-03 01:43	40m	+2 / -	KE2INI	- / -	2	Partial capture
10-03 01:41	40m	+4 / -	N2LQH	- / -	2	Partial capture
10-03 01:37	40m	+2 / -	W4DCJ	- / -	2	Partial capture
10-03 01:30	40m	+3 / -	N2LQH	- / -	3	Partial capture
10-03 01:29	40m	+6 / -	WP4TUN	- / -	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
045430  +3 1547  N4SIM F5OZK JN23
050200  -2 1547  KJ5PTH F5OZK JN23 (x8)
051130  -8 1547  KC3SDJ F5OZK JN23 (x3)
051330  -9 1547  KJ5PTH F5OZK JN23 (x3)

20m

UTC    dB Audio  Message
175100 +15  781  BH6QCT F5OZK JN23 (x5)
183830  -1  781  BG7BVI F5OZK JN23 (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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee