F4DIA — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

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. 13,679 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 110 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-11-05.

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 13,679 FT8 messages attributed to F4DIA as the transmitting token by decoded message structure across 110 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (78%), followed by 80 m (14%) and 20 m (7%). Most decodes (58%) fell within the six-hour window 01:00-07:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

13,679

Messages attributed

110

UTC dates decoded

966

Active 15-min windows

-9 dB

Estimated median S/N

Bands

160m · 1 80m · 1,916 60m · 97 40m · 10,620 20m · 970 10m · 75

First attributed message: 2026-06-08
Last attributed message: 2026-11-05 07:19 UTC

Observed FT8 message patterns

Attributed sample: 13,679 messages
Active dates: 110 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -19 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2,810, moderate (-15 to -9 dB) 4,157, strong (≥ -8 dB) 6,712.

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 ×7 ON4MAP · Belgium ×7 CT2GQA · Portugal ×6 F3CJ · France ×6 K3RTA · United States ×6 N9CBW · United States ×6 W9MDM · United States ×6 GJ0KYZ · Jersey ×5 K3UCQ · United States ×5 M7KSV · England ×5 R5AV · European Russia ×4 DF5DY · Fed. Rep. of Germany ×4

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 · 9,216 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,158 km (approx.)
Last such locator decoded: 2026-11-05 07:19 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
11-05 07:13	40m	-9 / -	G0LAT	- / -3	2	✓ Closing fragment
11-05 07:08	40m	-4 / -	PA2AMJ	-6 / -1	3	✓ Closing observed
11-05 06:56	40m	-12 / -	ME7KSV	- / -12	2	Partial capture
11-05 06:46	40m	-9 / -	DL6NA	- / -15	2	✓ Closing fragment
11-05 06:45	40m	-8 / -7	OE5FIL	-11 / -2	5	✓ Full exchange observed
11-05 06:38	40m	-8 / -10	YT2TW	-8 / -13	4	✓ Full exchange observed
11-05 06:28	40m	-9 / -15	YL3ATJ	-9 / -17	9	✓ Full exchange observed
11-05 06:20	40m	- / -	DG5PW	-10 / -	5	Partial capture
11-05 06:11	40m	-6 / -15	SQ8AA	-18 / -10	8	✓ Full exchange observed
11-05 06:02	40m	-11 / +4	F4HTO	0 / -	5	✓ Full exchange observed
11-05 05:59	40m	-12 / -	KC0REW	- / -14	2	✓ Closing fragment
11-05 05:50	40m	-18 / -	EA6ABF	-4 / -20	3	Partial capture
11-05 05:26	40m	+2 / -	SP5PSM	- / -12	2	✓ Closing fragment
11-05 04:55	40m	- / -	SP2SGZ	-4 / -	3	✓ Closing fragment
11-05 04:46	40m	0 / -	N5BTZ	- / -8	2	✓ Closing fragment
11-05 04:45	40m	0 / -	KJ5RSN	- / -4	3	✓ Closing fragment
11-05 04:40	40m	-8 / -	W9LO	- / -11	2	✓ Closing fragment
11-05 04:35	40m	0 / -	TI2FAF	- / -6	2	✓ Closing fragment
11-05 04:32	40m	-8 / -	N5BTZ	- / -10	4	Partial capture
11-05 04:31	40m	- / -	PD1DBL	-4 / -	4	Partial capture
11-05 04:30	40m	-8 / -10	UT8IIV	-16 / -7	5	✓ Full exchange observed
11-05 04:27	40m	-4 / -	W9LO	- / -8	4	✓ Closing fragment
11-05 04:26	40m	-8 / -	KB3Z	-14 / -	5	✓ Full exchange observed
11-05 04:22	40m	-5 / -	W4MMP	- / -15	2	✓ Closing fragment
11-05 04:20	40m	-3 / -	KJ5GNR	- / -13	3	Partial capture
11-05 04:18	40m	-5 / -	KB0RFC	- / -11	3	✓ Closing fragment
11-05 04:17	40m	-2 / -	W9ML	- / -11	2	✓ Closing fragment
11-05 04:14	40m	- / -2	TC8TR	-15 / -	2	✓ Closing fragment
11-05 04:11	40m	-4 / -13	R4FDK	-14 / -13	6	✓ Full exchange observed
11-05 04:08	40m	-3 / -	N4GPR	- / -17	4	Partial capture
11-05 04:05	40m	-10 / -	CU2DX	- / -3	4	✓ Closing fragment
11-05 04:02	80m	-4 / -	P76QSX	- / -	4	Partial capture
11-05 04:00	80m	-4 / -12	AA4VV	-18 / 0	5	✓ Full exchange observed
11-05 03:57	80m	+3 / -	KC1ZDZ	- / -14	3	✓ Closing fragment
11-05 03:54	80m	- / -	SP8HDC	-1 / -	3	Partial capture
11-05 03:53	80m	-2 / -	KT4ZX	- / -11	3	✓ Closing fragment
11-05 03:51	80m	-1 / -	N0BUZ	-7 / -7	3	✓ Closing observed
11-05 03:49	80m	+4 / -	W3SW	- / -16	4	✓ Closing fragment
11-04 12:50	40m	- / -	DG5PW	-18 / -	4	Partial capture
11-04 06:06	40m	-9 / -	IT9ECY	- / -12	4	Partial capture
11-04 06:04	40m	-9 / +3	OE6OCG	-8 / -	5	✓ Full exchange observed
11-04 05:58	40m	-11 / -	KN4PAH	- / -20	4	Partial capture
11-04 05:58	40m	- / -10	YO8CVY	-6 / -	2	Partial capture
11-04 05:53	40m	-12 / -	N5RJR	- / -	4	Partial capture
11-04 05:45	80m	- / +7	DO2MOG	-3 / -	3	✓ Closing fragment
11-04 05:40	80m	- / -9	YO2CR	+5 / -	2	✓ Closing fragment
11-04 05:39	80m	-6 / -	ON3CCM	- / +3	2	✓ Closing fragment
11-04 05:36	80m	-6 / +6	ON4MAP	-14 / -	4	✓ Closing observed
11-04 05:33	80m	-10 / -	N8PFK	- / -15	4	✓ Closing fragment
11-04 05:26	80m	-7 / -	UA9XL/P	- / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
071215  -6  912  CQ F4DIA JN36 (x2)
071345 -11  912  G0LAT F4DIA R-03 (x2)
071445 -10  912  CQ F4DIA JN36 (x11)

80m

UTC    dB Audio  Message
035515  +0  882  F4DIA SP8HDC KO00 (x2)
035715  +0  882  KC1ZDZ F4DIA JN36 (x3)
040000  -4  881  AA4VV F4DIA JN36
040015 -18 1801  F4DIA AA4VV -12
040030  -1  882  AA4VV F4DIA R+00
040045 -19 1800  F4DIA AA4VV RR73
040100  -7  881  AA4VV F4DIA 73
040115 -11 2548  F4DIA 9A2WA JN83
040215  -3  881  P76QSX F4DIA JN36 (x4)

10m

UTC    dB Audio  Message
122700  +3  730  F4DIA DP9S JN59
132330 -21 1365  F4DIA DO3HCS JO52 (x5)
144230 -15 2495  F4DIA CR7BUW R-15
132215  -6 2029  F4DIA CT2GQA IM58 (x8)

160m

UTC    dB Audio  Message
014900  -9 2189  F5RMK F4DIA JN36
220715  +9 1631  F4DIA UX7QV KN29 (x7)

60m

UTC    dB Audio  Message
064915  -4  638  F4DIA SA7CTL JO65

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.

CW

2 CW reception events in the last 30 days.

40m: 2 events; last heard 2026-11-03 18:15 UTC

Latest CW receptions

UTC	Band	kHz	S/N · 500 Hz	WPM	Listen
2026-11-03 18:15:42	40m	7025.028	12.5 dB	20.3	WebSDR ↗
2026-11-03 18:09:05	40m	7025.028	4.3 dB	20.1	WebSDR ↗

CW reception history

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