F4VWK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: JN16

Receiver-side FT8 activity involving F4VWK, decoded by SO8OO in southeastern Poland. 264 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 13 UTC dates in the available aggregate history. Observed between 2026-07-10 and 2026-09-19.

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 264 FT8 messages attributed to F4VWK as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (67%), followed by 20 m (22%) and 40 m (12%). Several six-hour UTC windows tied for the largest share (67%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (82%); the estimated median was 0 dB.

Overview

264

Messages attributed

UTC dates decoded

Active 15-min windows

0 dB

Estimated median S/N

Bands

80m · 176 40m · 31 20m · 57

First attributed message: 2026-07-10
Last attributed message: 2026-09-19 21:58 UTC

Observed FT8 message patterns

Attributed sample: 264 messages
Active dates: 13 UTC dates
Estimated median S/N: 0 dB
Estimated 10th-90th percentile: -11 to +9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 45, strong (≥ -8 dB) 217.

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 F4VWK in decoded directed-looking exchanges:

VP8A · Falkland Islands ×2 DH3LAT · Fed. Rep. of Germany DK8HC · Fed. Rep. of Germany DL2JB · Fed. Rep. of Germany IQ4JO · Italy OK1WCF · Czech Republic P40AA · Aruba PC2J · Netherlands RN6MA · European Russia SQ2BXI · Poland V31MA · Belize A61OK · United Arab Emirates

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 F4VWK

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: JN16 · 174 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,439 km (approx.)
Last such locator decoded: 2026-09-19 21:57 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	F4VWK S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 21:55	80m	+8 / -	RI1FJZ	- / -14	6	✓ Closing fragment
09-15 21:39	80m	-13 / -	TK/4O7CC	- / -2	3	Partial capture
09-14 21:29	40m	+8 / -	TN8GD	- / -14	4	✓ Closing fragment
09-14 21:27	40m	+6 / -	V51WH	- / -17	2	Partial capture
09-04 21:53	80m	-6 / -	HS0ZNR	- / -	2	Partial capture
09-04 21:49	80m	0 / -	HS0ZNR	- / -	2	Partial capture
09-04 21:48	80m	0 / +1	RI1FJL	-14 / -16	8	✓ Full exchange observed
09-04 21:46	80m	+1 / -8	DU2W	-17 / -	4	Partial capture
09-04 21:45	80m	-4 / -	HS0ZNR	- / -	2	Partial capture
09-04 21:40	80m	-1 / -	RI1FJL	- / -	4	Partial capture
09-04 21:38	80m	+2 / -	VR2ZXP	- / -	2	Partial capture
09-04 21:34	80m	- / -	SP4WJ	+5 / -	31	Partial capture
09-04 21:25	80m	+1 / -	RI1FJL	- / -	19	Partial capture
09-04 21:20	80m	+4 / -	VR2ZXP	- / -	3	Partial capture
09-04 21:03	80m	+6 / -	RI1FJL	- / -	31	Partial capture
09-04 18:07	80m	-1 / -	R9WGG	- / -	3	Partial capture
09-04 18:06	80m	-1 / -	RA9SOZ	- / -	2	Partial capture
09-03 21:39	80m	- / -	SP4WJ	-2 / -	2	Partial capture
09-03 21:36	80m	+8 / -	UB0AMB	-15 / -15	4	✓ Closing observed
09-03 21:32	80m	+3 / -	RI1FJL	- / -	2	Partial capture
09-03 21:30	80m	- / 0	F1PBZ	+10 / -	2	Partial capture
09-03 21:00	80m	+2 / -5	DK9CK	-12 / -	2	✓ Closing observed
09-03 20:58	80m	+4 / -2	DF1IH	-3 / -2	5	✓ Full exchange observed
09-03 20:57	80m	+8 / -	ON4KDT	-11 / -	4	✓ Closing observed
09-03 20:56	80m	+7 / -	RW9FZ	- / -22	2	Partial capture
09-02 21:39	80m	+7 / -	BI8FRF	- / -	3	Partial capture
09-02 20:29	80m	-13 / -	5Z4VJ	- / -15	3	Partial capture
09-02 20:19	80m	-14 / -	RI1FJL	- / -	2	Partial capture
09-02 18:25	80m	-2 / -	ZS1J	- / -	2	Partial capture
09-02 18:11	80m	-11 / -	ZS1J	- / -7	9	Partial capture
09-02 18:04	80m	-12 / -	UN7LZ	- / -20	2	Partial capture
09-02 18:00	80m	-4 / -	EA5DKT	- / -5	2	✓ Closing fragment
09-02 17:58	80m	-2 / -4	HF9D	+12 / -7	7	✓ Full exchange observed
09-02 17:54	80m	0 / -20	HF5A	+8 / -16	5	✓ Full exchange observed
09-02 17:51	80m	-4 / -	VK5GR	- / -14	3	Partial capture
08-31 17:59	80m	0 / -	RA9CUU	- / -15	2	Partial capture
08-31 17:55	80m	+4 / -	EY8BL	- / -20	2	Partial capture
08-31 17:54	80m	+6 / -	EA3FR	- / -11	2	✓ Closing fragment
08-31 17:49	80m	0 / -	BA5AN	-17 / -13	7	✓ Closing observed
08-23 01:35	40m	-1 / -	A61OK	- / -20	3	✓ Closing fragment
08-23 01:33	40m	+2 / -	OA4ENG	- / -9	3	✓ Closing fragment
08-23 01:27	80m	+9 / -	E75C	- / -	2	Partial capture
08-23 01:12	80m	+16 / -	TF3VS	- / -	3	Partial capture
08-23 01:10	80m	+4 / -	EC3A	-15 / -6	3	✓ Closing observed
08-23 01:04	80m	+5 / -7	VP8A	-16 / -10	13	✓ Full exchange observed
08-23 00:54	40m	+6 / -	IZ8PPI	- / +1	2	✓ Closing fragment
08-23 00:53	40m	+6 / -	KE2CUR	- / -15	2	✓ Closing fragment
08-23 00:53	40m	+7 / -1	DL9KM	-6 / +3	9	✓ Full exchange observed
08-23 00:51	40m	+8 / -	HI4MRE	- / -16	3	✓ Closing fragment
08-09 14:40	20m	-10 / -	RN6MA	-7 / -	2	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
215500  -1  264  RI1FJL F4VWK R-17 (x2)
215700  -4  264  HS0ZNR F4VWK JN16
213715 -14 2401  II6IALU F4VWK JN16
213815 -11 2401  SP100PKP F4VWK JN16
213945 -14 2401  <TK/4O7CC> F4VWK JN16 (x3)
214100  +1  743  F4VWK RR73; UR3CTU <TK/4O7CC> -04
215515  +6  783  RI1FJZ F4VWK JN16 (x6)

40m

UTC    dB Audio  Message
005645  +6 2550  W0JJB F4VWK JN16
013230  -3 1448  9J2FI F4VWK JN16
013300  +3 1448  OA4ENG F4VWK JN16 (x3)
013530  +4 1448  A61OK F4VWK JN16 (x3)
212645  +1 2430  TN8GD F4VWK JN16
212745  +5 2430  V51WH F4VWK JN16 (x2)
212945  +7 2429  TN8GD F4VWK JN16 (x4)

20m

UTC    dB Audio  Message
134215 -15 1563  F4VWK DB1EF JO41
134330  -8  591  UT4QM F4VWK -21 (x2)
144045  -7  571  F4VWK RN6MA RR73
144045  -5  462  F4VWK IK4LZH JN54
144100 -10  571  RN6MA F4VWK RR73
144130 -11  571  CQ F4VWK JN16 (x3)
201800  -4  453  UR4UPQ F4VWK -04
201830  -4  454  CQ F4VWK JN16 (x3)
080100  +1 1781  9Y4DG F4VWK JN16
080215  +2  770  YV5JLO F4VWK JN16

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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