F4DVG — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving F4DVG, decoded by SO8OO in southeastern Poland. 361 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 19 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-03.

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 361 FT8 messages attributed to F4DVG as the transmitting token by decoded message structure across 19 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (89%), followed by 80 m (9%) and 20 m (3%). Most decodes (91%) fell within the six-hour window 00:00-06:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10.9 dB.

Overview

361

Messages attributed

UTC dates decoded

Active 15-min windows

-10.9 dB

Estimated median S/N

Bands

80m · 31 40m · 320 20m · 10

First attributed message: 2026-06-08
Last attributed message: 2026-09-03 01:40 UTC

Observed FT8 message patterns

Attributed sample: 361 messages
Active dates: 19 UTC dates
Estimated median S/N: -10.9 dB
Estimated 10th-90th percentile: -17 to -4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 52, moderate (-15 to -9 dB) 193, strong (≥ -8 dB) 116.

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 F4DVG in decoded directed-looking exchanges:

4L7T · Georgia 5B4ARQ · Cyprus 8Z1IT · Saudi Arabia AA3B · United States HZ1TT · Saudi Arabia IQ4JO · Italy KP4QVQ · Puerto Rico OA4ENG · Peru R6FX · European Russia R7ZL · European Russia RC9WC · Asiatic Russia

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 F4DVG

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 · 228 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,346 km (approx.)
Last such locator decoded: 2026-09-03 01:40 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	F4DVG S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-03 01:39	80m	+1 / -	W4PSK	- / -	3	Partial capture
09-03 01:17	40m	-8 / -12	RC9WC	-15 / -8	14	✓ Full exchange observed
09-03 01:14	40m	+2 / -	NP4EB	- / -	2	Partial capture
09-03 01:09	40m	-4 / -10	UN7LZ	-8 / -10	20	Partial capture
08-30 04:23	40m	-7 / -	KW4BY	- / -	5	Partial capture
08-30 04:15	40m	- / -	LZ2VQ	-5 / -	2	Partial capture
08-30 04:07	40m	- / -11	AA3B	0 / -	2	✓ Closing fragment
08-21 01:56	40m	-9 / -	YV5AEZ	- / -	11	Partial capture
08-21 01:52	40m	0 / -15	4L7T	+4 / -15	9	✓ Full exchange observed
08-21 01:51	40m	-11 / -	YV5AEZ	- / -	3	Partial capture
08-21 01:46	40m	-15 / -	YV5AEZ	- / -	3	Partial capture
08-21 01:36	40m	-12 / -	OA4ENG	-14 / -12	4	✓ Closing observed
08-21 01:33	40m	-5 / -11	8Z1IT	-8 / -3	3	✓ Full exchange observed
08-21 01:30	40m	-11 / -16	R7ZL	+3 / -8	5	✓ Full exchange observed
08-06 02:16	40m	- / -	DL9ATW	-15 / -	3	Partial capture
08-06 02:07	40m	-20 / -	PV8AJ	- / -	4	Partial capture
08-06 02:06	40m	- / -	DL9ATW	-14 / -	5	Partial capture
07-17 01:56	40m	-11 / -20	R6FX	-6 / -3	4	✓ Full exchange observed
07-17 01:43	40m	-18 / -	HI8L	- / -	3	Partial capture
07-17 01:38	40m	-16 / -	5B4ARQ	- / -19	4	✓ Closing fragment
07-07 20:47	40m	-24 / -	EA8CVR	- / -14	2	Partial capture
07-07 20:42	40m	- / 0	IQ4JO	+4 / -	3	✓ Closing fragment
06-25 19:18	40m	- / -	DL7GAL	-10 / -	4	Partial capture
06-25 19:16	40m	- / -	IQ4JO	+2 / -	2	Partial capture
06-25 02:30	40m	- / -19	UW5IM	-13 / -	20	Partial capture
06-25 02:29	40m	- / -	PD1BER	-10 / -	15	Partial capture
06-25 02:04	40m	-14 / -	KP4QVQ	- / -17	3	✓ Closing fragment
06-25 01:52	40m	- / -10	HZ1TT	-14 / -	3	✓ Closing fragment
06-24 20:06	40m	- / -	9A7BB	-19 / -	4	Partial capture
06-24 19:54	40m	- / -5	E70SZ	-8 / -	2	Partial capture
06-24 19:47	40m	-23 / -	HZ1TT	- / +4	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
012030  -9 2150  RC9WC F4DVG JN25 (x2)
012145 -15 2199  F4DVG RC9WC -12
012200  -6 2149  RC9WC F4DVG R-08
012215 -14 2199  F4DVG RC9WC -12
012230 -11 2149  RC9WC F4DVG R-05
012245 -16 2199  F4DVG RC9WC RR73 (x2)
012430 -11  919  CQ F4DVG JN25 (x4)
012645 -12 1918  F4DVG UA3PAB KO84
012700  -9  918  CQ F4DVG JN25
021115 -21 1137  F4DVG RX3ASQ R-12

80m

UTC    dB Audio  Message
013915  +1  601  W4PSK F4DVG JN25 (x2)
014000  -6 2264  F4DVG R2EA -05
014015  +3  601  W4PSK F4DVG JN25

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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