F5USK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: JN03

Receiver-side FT8 activity involving F5USK, decoded by SO8OO in southeastern Poland. 102 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-09-20.

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 F5USK as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (48%), followed by 60 m (27%) and 40 m (16%). Several six-hour UTC windows tied for the largest share (84%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

102

Messages attributed

UTC dates decoded

Active 15-min windows

-14 dB

Estimated median S/N

Bands

160m · 7 80m · 49 60m · 28 40m · 16 20m · 2

First attributed message: 2026-06-11
Last attributed message: 2026-09-20 18:47 UTC

Observed FT8 message patterns

Attributed sample: 102 messages
Active dates: 7 UTC dates
Estimated median S/N: -14 dB
Estimated 10th-90th percentile: -19 to -4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 36, moderate (-15 to -9 dB) 43, strong (≥ -8 dB) 23.

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 F5USK in decoded directed-looking exchanges:

EX7CQ · Kyrgyzstan N1WI · United States RA9YTI · Asiatic Russia EA5HM · Spain IK4CBO · Italy LU1WFU · Argentina N9HXR · United States W6VJT · United States WQ1C · United States DL8WEM · Fed. Rep. of Germany HS0ZNR · Thailand V51WH · Namibia

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 F5USK

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: JN03 · 59 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,732 km (approx.)
Last such locator decoded: 2026-09-20 18:47 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	F5USK S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 18:33	160m	-18 / -	RI1FJZ	- / -	2	Partial capture
09-20 06:11	60m	-9 / -	C31KC	- / 0	2	Partial capture
09-20 06:06	60m	-9 / -	ZL2AGY	- / -	3	Partial capture
09-20 06:01	80m	-14 / -	HI8JCD	- / -6	2	Partial capture
09-20 05:53	80m	-17 / -	DL8WEM	-10 / -11	4	✓ Full exchange observed
09-20 05:50	80m	-20 / -	W9DHI	- / -16	3	✓ Closing fragment
09-20 05:48	80m	-14 / -	K5AWJ	- / -25	7	Partial capture
09-20 05:43	80m	-9 / -	HI8JCD	- / -6	7	Partial capture
09-19 18:45	160m	- / -16	EX7CQ	-12 / -	2	✓ Closing fragment
09-19 18:33	80m	-15 / -8	V51WH	-15 / -3	3	✓ Full exchange observed
09-19 05:07	40m	-12 / -	KB6SSN	- / -	2	Partial capture
09-19 04:58	40m	-4 / -	W6C	- / -	5	Partial capture
09-19 04:35	80m	-3 / -9	6Y5HN	-20 / -	2	Partial capture
09-15 20:37	80m	-17 / -	JA5AQC	- / -	2	Partial capture
09-15 20:35	80m	-14 / -15	JA5MHD	-24 / -	2	Partial capture
09-04 22:26	160m	-13 / -20	RA9YTI	-18 / -16	9	✓ Full exchange observed
09-04 21:53	80m	-12 / -	HS0ZNR	-18 / -	2	✓ Closing observed
09-04 21:47	80m	-2 / -	RI1FJL	- / -	3	Partial capture
09-04 05:28	80m	-22 / -	PY4QQ	- / -	2	Partial capture
09-04 05:20	80m	-20 / -	W5ZG	- / -15	2	Partial capture
08-31 05:59	60m	-17 / -	ZL2AGY	- / -	3	Partial capture
08-31 05:53	60m	-17 / -	ZL2AGY	- / -	4	Partial capture
08-31 05:51	60m	-19 / -	LU1WFU	- / -22	2	✓ Closing fragment
08-31 05:42	60m	-14 / -	EA5HM	- / +4	2	✓ Closing fragment
08-31 05:40	60m	-14 / -	IK4CBO	-21 / +1	7	✓ Full exchange observed
08-31 05:40	60m	-13 / -	WQ1C	- / -18	3	✓ Closing fragment
08-31 05:37	60m	-14 / -	N9HXR	- / -14	3	✓ Closing fragment
08-31 05:36	60m	-14 / -	W6VJT	- / -	2	✓ Closing fragment
08-31 05:34	60m	-15 / -	LU1WFU	- / -	2	Partial capture
08-31 05:25	80m	-16 / -	KJ5ORI	- / -14	3	Partial capture
08-31 05:24	80m	- / -	SP1ZMO	-8 / -	5	Partial capture
08-31 05:22	80m	- / +3	ON1JP	-22 / -	2	Partial capture
08-26 07:00	20m	+8 / -	RI1FJL	- / +2	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
055045 -20 2417  W9DHI F5USK JN03 (x3)
055215 -16 2417  K5AWJ F5USK JN03 (x2)
055315 -24 2417  CQ F5USK JN03
055330  +3 2418  F5USK DK7UY JO44
055345 -17 2417  DL8WEM F5USK -11
055400 -11 2418  F5USK DL8WEM R+11
055415 -17 2417  DL8WEM F5USK RR73
055430 -10 2418  F5USK DL8WEM 73
055530 -23  516  F5USK DO5PAP JO30
060100 -14 2872  HI8JCD F5USK JN03 (x2)
184745  +6 2577  RI1FJZ F5USK JN03

160m

UTC    dB Audio  Message
222645 -14 1938  RA9YTI F5USK JN03 (x3)
223030 -16 1605  F5USK RA9YTI -20
223045 -12 1938  RA9YTI F5USK R-16
223100 -15 1605  F5USK RA9YTI RR73 (x4)
184500 -12 1690  F5USK EX7CQ -16 (x2)
051515 -16 2421  N1WI F5USK 73
183345 -17 2051  RI1FJZ F5USK JN03 (x2)

60m

UTC    dB Audio  Message
054400 -22 1889  F5USK IK4CBO 73
055130 -19 2213  LU1WFU F5USK R-22 (x2)
055300 -19 2213  ZL2AGY F5USK JN03 (x10)
061100  -8 2415  C31KC F5USK JN03 (x2)

40m

UTC    dB Audio  Message
045645  +0 2407  TT1GD F5USK JN03
045800  +1 2407  W6C F5USK JN03 (x5)
050730 -15 2407  KB6SSN F5USK JN03 (x2)

20m

UTC    dB Audio  Message
070015 +11 2299  RI1FJL F5USK JN03 (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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