F4DIA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: JN36

Receiver-side FT8 activity involving F4DIA, decoded by SO8OO in southeastern Poland. 6,968 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 74 UTC dates in the available aggregate history. Observed between 2026-06-08 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 6,968 FT8 messages attributed to F4DIA as the transmitting token by decoded message structure across 74 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (72%), followed by 20 m (14%) and 80 m (12%). Most decodes (62%) fell within the six-hour window 03:00-09:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11.9 dB.

Overview

6,968

Messages attributed

UTC dates decoded

574

Active 15-min windows

-11.9 dB

Estimated median S/N

Bands

160m · 1 80m · 824 60m · 97 40m · 5,001 20m · 970 10m · 75

First attributed message: 2026-06-08
Last attributed message: 2026-09-20 11:58 UTC

Observed FT8 message patterns

Attributed sample: 6,968 messages
Active dates: 74 UTC dates
Estimated median S/N: -11.9 dB
Estimated 10th-90th percentile: -20 to -0.7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2,075, moderate (-15 to -9 dB) 2,490, strong (≥ -8 dB) 2,403.

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 F4DIA in decoded directed-looking exchanges:

M8FQT · England ×6 M7KSV · England ×5 KE2CUR · United States ×4 CT2GQA · Portugal ×4 IK4LZH · Italy ×4 ON4MAP · Belgium ×4 G8OO · England ×3 MM7CEH · Scotland ×3 R5AV · European Russia ×3 DF5DY · Fed. Rep. of Germany ×3 DF8RU · Fed. Rep. of Germany ×3 F1IQH · France ×3

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 F4DIA

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: JN36 · 4,745 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,158 km (approx.)
Last such locator decoded: 2026-09-20 11:58 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	F4DIA S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 11:53	40m	-15 / +3	OK1WE	+5 / -5	5	✓ Full exchange observed
09-20 11:43	40m	-17 / -	PA3BBG	- / -3	2	✓ Closing fragment
09-20 11:36	40m	-14 / -	HB9HRR	- / +7	2	✓ Closing fragment
09-20 11:29	40m	-18 / -12	SP9WAZ	+4 / -12	8	✓ Full exchange observed
09-20 11:22	40m	-19 / -	IT9LPO	- / -15	4	✓ Closing fragment
09-20 11:07	40m	-18 / -	SP6PST	-3 / -	2	✓ Closing observed
09-20 11:02	40m	-18 / -11	SP9VRQ	-10 / -16	7	✓ Full exchange observed
09-20 10:51	40m	-15 / -	EA5GQB/P	- / -21	4	Partial capture
09-20 10:50	40m	-16 / -	IU5HIU	- / +2	2	✓ Closing fragment
09-20 10:37	40m	-17 / -	M8MFU	- / -3	2	✓ Closing fragment
09-20 10:06	40m	-21 / -3	DK9GZ	-8 / -12	5	✓ Full exchange observed
09-20 10:04	40m	-20 / -	NK8VOU	- / -24	3	Partial capture
09-20 10:03	40m	-20 / -	DH1DH	- / 0	2	✓ Closing fragment
09-20 09:57	40m	-16 / -11	SQ2PHC	-5 / -22	12	✓ Full exchange observed
09-20 09:55	40m	-20 / -	EA5AKC	- / -14	4	✓ Closing fragment
09-20 09:25	40m	- / -9	SP6AMI	-2 / -	2	✓ Closing fragment
09-20 09:19	40m	-17 / -	EA7TB	- / -12	2	✓ Closing fragment
09-20 09:16	40m	-16 / +3	DM9YL	-18 / -10	5	✓ Full exchange observed
09-20 09:04	40m	-14 / -	F3CJ	- / -1	2	✓ Closing fragment
09-20 08:41	40m	-10 / +1	DF0PDF	-6 / -	3	✓ Closing observed
09-20 08:29	40m	-14 / -	F5MMC	- / -15	2	✓ Closing fragment
09-20 08:24	40m	-13 / -	KB3Z	- / -16	3	✓ Closing fragment
09-20 08:20	40m	-13 / +10	OE9RWH	-13 / -	3	✓ Closing observed
09-20 08:15	40m	-10 / -	OE9RWH	- / -20	2	Partial capture
09-20 08:12	40m	-10 / -	IU0REQ	- / -16	3	Partial capture
09-20 08:10	40m	-13 / -	OH3MB	-14 / -12	4	✓ Closing observed
09-20 08:08	40m	-16 / +10	DK3MM	-16 / +2	4	✓ Full exchange observed
09-20 05:18	40m	- / +1	PD2WL	-14 / -	4	✓ Closing fragment
09-20 03:57	40m	-1 / -	WE9O	- / -14	2	✓ Closing fragment
09-20 03:55	40m	-4 / -13	RY3F	-8 / -11	4	✓ Full exchange observed
09-20 03:48	40m	-1 / -	DJ2DL	- / -11	2	✓ Closing fragment
09-20 03:43	40m	0 / -	KN4UPY	- / -6	5	Partial capture
09-20 03:38	40m	-3 / -	KC9DGP	- / -15	2	✓ Closing fragment
09-20 03:32	40m	0 / -	K3RTA	- / -21	4	Partial capture
09-20 03:30	40m	- / -12	RY3F	-7 / -	3	Partial capture
09-19 16:05	40m	- / -	UB9MEU	-14 / -	2	Partial capture
09-19 15:48	40m	-7 / -	MM0EMC	- / -10	3	✓ Closing fragment
09-19 15:42	40m	-6 / -	MM0EMC	- / -10	3	Partial capture
09-19 15:33	40m	- / -	DF5DY	+3 / -	3	✓ Closing fragment
09-19 15:00	40m	- / -10	SP3EIE	-5 / -	5	Partial capture
09-19 14:31	40m	- / -	DL4PY	-8 / -	2	✓ Closing fragment
09-19 14:21	40m	-14 / -	IU2WCY	-10 / -	2	✓ Closing observed
09-19 05:51	40m	-5 / -19	YO8RCA	-2 / -13	6	Partial capture
09-19 05:50	40m	-8 / -	DJ9MA	- / +4	2	✓ Closing fragment
09-19 05:41	40m	-8 / -	DM7RAT	- / -8	2	✓ Closing fragment
09-19 05:29	40m	-13 / -	KQ4EZN	- / -16	3	✓ Closing fragment
09-19 05:26	40m	-6 / -	K8MAL	- / -14	4	✓ Closing fragment
09-19 05:01	40m	-16 / -	RA6ZD	-19 / -14	2	Partial capture
09-19 04:07	40m	+4 / -	WF1B	- / -4	2	✓ Closing fragment
09-19 04:02	40m	+10 / -	KD3BIS	- / -8	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
115230 -16 1727  CQ F4DIA JN36 (x2)
115315  +8  993  F4DIA OK1WE JO70
115330 -14 1727  OK1WE F4DIA -05
115345  +6  993  F4DIA OK1WE R+03
115400 -16 1727  OK1WE F4DIA RR73
115415  +1  993  F4DIA OK1WE 73
115430 -15 1727  CQ F4DIA JN36 (x8)

60m

UTC    dB Audio  Message
042300  -4 1219  F4DIA DH9DR JO31 (x2)
042345 -19 1504  DH9DR F4DIA RR73
042400  -5 1219  F4DIA DH9DR 73
042415 -18 1504  CQ F4DIA JN36 (x8)
043130 -13 1073  F4DIA OM3ZAS -17 (x2)
064915  -4  638  F4DIA SA7CTL JO65

80m

UTC    dB Audio  Message
021500 -22  276  F4DIA HK4EIC RR73
021515  +3 2194  HK4EIC F4DIA 73
021715  +1 2193  AI4UC F4DIA JN36 (x3)
021930  -3 2194  W9HT F4DIA JN36 (x3)
053415 -17 1103  TK/4O7CC F4DIA R-14
053645 -15 1103  N1WI F4DIA JN36
030445  +3 1494  DK0RPO F4DIA JN36
030500  +7 2505  F4DIA DK0RPO +12 (x2)
030545  +4 1494  DK0RPO F4DIA 73
030715  +1 1494  R3PLN F4DIA JN36

10m

UTC    dB Audio  Message
155000 -16 1963  F4DIA PD4FLD RR73
155000 -14 1917  F4DIA F4JNP JO10
155030 -17 1963  F4DIA PD4FLD RR73
155030 -10 1917  F4DIA F4JNP JO10 (x2)
155515 -21 1585  F4DIA OZ1BIN -12 (x5)
163215 -11 1784  F4DIA PE9JAN JO22 (x4)
141330 -11  540  F4DIA LU6ETB RR73

160m

UTC    dB Audio  Message
014900  -9 2189  F5RMK F4DIA JN36

20m

UTC    dB Audio  Message
125030  +0 1289  KR4EBE F4DIA JN36 (x6)
125445  -1 1289  KE8YOU F4DIA JN36 (x5)
133215 +10 1289  WB4EM F4DIA JN36 (x4)

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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