F4VXC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: JN25

Receiver-side FT8 activity involving F4VXC, decoded by SO8OO in southeastern Poland. 37 FT8 messages attributed to this token as transmitter, on 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-14 and 2026-08-11.

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 37 FT8 messages attributed to F4VXC as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (78%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-14 dB

Estimated median S/N

Bands

20m · 37

First attributed message: 2026-06-14
Last attributed message: 2026-08-11 16:44 UTC

Observed FT8 message patterns

Attributed sample: 37 messages
Active dates: 7 UTC dates
Estimated median S/N: -14 dB
Estimated 10th-90th percentile: -20 to -9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 15, moderate (-15 to -9 dB) 20, strong (≥ -8 dB) 2.

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 F4VXC in decoded directed-looking exchanges:

CR7BUJ · Portugal CT7AQH · Portugal DJ8GS · Fed. Rep. of Germany DL3MIB · Fed. Rep. of Germany EA2DYB · Spain EA3GXK · Spain M0SCK · England M7CWF · England OE5PEN · Austria

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 F4VXC

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: JN25 · 20 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,346 km (approx.)
Last such locator decoded: 2026-08-11 07:51 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	F4VXC S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 01:24	40m	- / -14	TA3NK	-12 / -	2	Partial capture
08-11 16:47	80m	- / -	OZ1EDR	-14 / -	5	Partial capture
08-11 16:46	20m	- / -	IV3JJT	-5 / -	2	Partial capture
08-11 07:48	20m	- / -6	OE5PEN	0 / -	3	✓ Closing fragment
08-09 09:51	20m	- / -	DJ8GS	-18 / -	2	✓ Closing fragment
08-09 09:48	20m	- / -19	PD3LKN	-20 / -	2	Partial capture
08-01 21:20	20m	-13 / -	DL1UDO	- / -	3	Partial capture
08-01 21:18	20m	-14 / -	M0SCK	-20 / -8	3	✓ Closing observed
08-01 21:16	20m	-12 / -	DL3MIB	- / -11	2	✓ Closing fragment
08-01 21:15	20m	-11 / -	CT7AQH	- / -15	2	✓ Closing fragment
08-01 21:14	20m	-10 / -	M7CWF	- / -16	2	✓ Closing fragment
07-22 16:23	20m	- / -	YO9HB	-16 / -	3	Partial capture
07-12 18:31	20m	- / -	EA3HMM	+8 / -	2	Partial capture
07-12 14:18	20m	-18 / -	MI0UFT	- / -	2	Partial capture
07-09 19:53	20m	- / -10	CR7BUJ	-10 / -	2	✓ Closing fragment
07-07 20:58	20m	- / -	EA2DYB	-10 / -	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
012400 -11 1216  F4VXC TA3NK KM39 (x2)

80m

UTC    dB Audio  Message
164715 -16 1363  F4VXC OZ1EDR JO65 (x5)

20m

UTC    dB Audio  Message
094830 -22 1842  F4VXC PD3LKN JO22 (x2)
095130 -18 1842  F4VXC DJ8GS JO53 (x2)
074630 -16  855  CQ F4VXC JN25
074715 -15  857  F4VXC M0IOW R-12
074845  +1  854  F4VXC OE5PEN JN78 (x3)
075130 -14  855  CQ F4VXC JN25
075200 -14  855  EA3IXP F4VXC R+00
164245 -13  856  F4VXC RY7G R-13
164430 -14  856  EA3GXK F4VXC RR73
164615  -6  709  F4VXC IV3JJT JN65 (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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