F8DBF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: IN78

Receiver-side FT8 activity involving F8DBF, decoded by SO8OO in southeastern Poland. 554 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 54 UTC dates in the available aggregate history. Observed between 2026-06-09 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 554 FT8 messages attributed to F8DBF as the transmitting token by decoded message structure across 54 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (37%), followed by 160 m (21%) and 40 m (19%). Most decodes (80%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

554

Messages attributed

UTC dates decoded

108

Active 15-min windows

-7 dB

Estimated median S/N

Bands

160m · 117 80m · 95 60m · 34 40m · 103 20m · 203 10m · 2

First attributed message: 2026-06-09
Last attributed message: 2026-09-19 23:25 UTC

Observed FT8 message patterns

Attributed sample: 554 messages
Active dates: 54 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -16 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 67, moderate (-15 to -9 dB) 183, strong (≥ -8 dB) 304.

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 F8DBF in decoded directed-looking exchanges:

5N0YEN · Nigeria ×2 RU3NCW · European Russia ×2 CN2DX · Morocco YB5QZ · Indonesia 7Z1BQ · Saudi Arabia A61SD · United Arab Emirates BA3QIQ · China BG5JSU · China C91RU · Mozambique CE8VSO · Chile KJ5PTH · United States LB1UK/P · Norway

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 F8DBF

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: IN78 · 381 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,942 km (approx.)
Last such locator decoded: 2026-09-19 23:25 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	F8DBF S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 23:24	80m	+12 / -	RI1FJZ	- / -	4	Partial capture
09-19 22:49	160m	- / -	IU0NAD	-8 / -	3	Partial capture
09-19 22:48	160m	-15 / -	RI1FJZ	- / -	2	Partial capture
09-19 22:44	160m	-19 / -	RI1FJZ	- / -	3	Partial capture
09-19 22:37	160m	-12 / -	RI1FJZ	- / -25	2	Partial capture
09-19 22:31	160m	-14 / -	RI1FJZ	- / -	5	Partial capture
09-14 21:23	40m	-1 / -	PY4VTL	- / -15	8	✓ Closing fragment
09-10 22:05	40m	+4 / -	BD4IAA	- / -24	5	✓ Closing fragment
09-10 21:59	40m	-1 / -	PR8EP	- / -	3	Partial capture
09-10 05:45	40m	-5 / -	F5OYA/P	- / -8	2	Partial capture
09-10 05:42	40m	-5 / -	J38DX	- / -9	5	✓ Closing fragment
09-10 05:38	40m	- / -	IK6DLK	-3 / -	3	Partial capture
09-10 05:35	40m	-10 / -	W5ART	- / -12	2	✓ Closing fragment
09-10 05:34	40m	- / -	IK6DLK	+9 / -	3	Partial capture
09-10 05:33	40m	-12 / -	R73SLET	- / -7	2	Partial capture
09-08 06:16	40m	- / +3	IW0FGX	-4 / -	3	Partial capture
09-08 06:11	40m	-8 / -	XE1JVO	- / -12	9	✓ Closing fragment
09-07 05:12	60m	-14 / -	HP/WE9G	- / -9	2	Partial capture
09-06 22:32	40m	+6 / -	CA1OGG	- / -13	6	✓ Closing fragment
09-06 22:31	40m	+5 / -	PS7RW	- / -15	2	✓ Closing fragment
09-06 22:28	40m	+3 / -	PP6BVM	- / -	5	Partial capture
09-04 22:33	160m	-10 / -	RI1FJL	- / -22	31	Partial capture
09-04 22:29	160m	-9 / -	RI1FJL	- / -	4	Partial capture
09-04 22:21	160m	-11 / -	RI1FJL	- / -	11	Partial capture
09-04 22:00	160m	-13 / -	RI1FJL	- / -21	27	Partial capture
09-04 21:45	160m	-9 / -	RI1FJL	- / -20	16	Partial capture
09-04 21:36	160m	-11 / -	RI1FJL	- / -	3	Partial capture
09-04 21:22	160m	-16 / -	RI1FJL	- / -	2	Partial capture
09-02 21:42	60m	- / -	DF7EF	+16 / -	5	Partial capture
09-02 21:42	60m	- / -	DL6ZAJ	0 / -	6	Partial capture
09-02 21:39	60m	-16 / -	LA1DPA	- / -8	6	Partial capture
08-30 21:44	40m	+4 / -	CE8VSO	- / -15	3	Partial capture
08-28 22:09	20m	+1 / -	CE8VSO	- / -16	5	✓ Closing fragment
08-27 23:22	80m	-11 / -	RI1FJL	- / -20	2	Partial capture
08-27 23:05	80m	- / -	DK8HC	-4 / -	3	Partial capture
08-25 00:29	40m	-1 / -	CE8VSO	- / -	8	Partial capture
08-23 21:08	40m	-6 / -	UB0SMX/P	- / -15	2	Partial capture
08-22 08:25	20m	-10 / -	5N0YEN	- / -20	2	✓ Closing fragment
08-21 22:05	80m	-16 / +4	RU3NCW	+2 / -7	5	✓ Full exchange observed
08-18 20:36	80m	0 / -	EI/G0BNR	+2 / -5	3	Partial capture
08-18 20:35	80m	+2 / -	OL900CO	- / -	2	Partial capture
08-17 23:27	80m	-5 / -	PY3SOL	- / -	3	Partial capture
08-17 23:17	80m	-1 / -	CE2SV	- / -14	3	✓ Closing fragment
08-17 23:15	80m	0 / -	PY3SOL	- / -	2	Partial capture
08-06 19:20	20m	-10 / -	SP3IPA	- / -	2	✓ Closing fragment
08-06 19:18	20m	-4 / +1	R3NCG	-8 / -15	6	✓ Full exchange observed
08-06 07:36	20m	- / -1	R4FDW	-15 / -	9	Partial capture
08-06 07:34	20m	-6 / -	VK2GQR	- / -	3	✓ Closing fragment
08-05 05:50	40m	- / -16	EU4U	-6 / -	2	✓ Closing fragment
08-04 22:04	80m	-3 / -	BG8SRK	- / -	20	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
220545  +1  316  F8DBF RU3NCW +04
220600 -13 1341  RU3NCW F8DBF R-07
220615  +4  316  F8DBF RU3NCW RR73
220630 -19 1341  RU3NCW F8DBF 73
230530  -6  565  F8DBF DK8HC JO42 (x3)
232245  -9 1846  RI1FJL F8DBF IN78 (x2)
051915 -13 1760  R9CS/P F8DBF R-10
212145  -7  733  RI1FJZ F8DBF IN78 (x5)

160m

UTC    dB Audio  Message
223245 -10 1320  RI1FJZ F8DBF IN78 (x10)
224930  -6  303  F8DBF IU0NAD JN62 (x2)
225015 -15 2525  RI1FJZ F8DBF IN78
225100  -9  303  F8DBF IU0NAD JN62
225315 -11 2525  RI1FJZ F8DBF R-17

60m

UTC    dB Audio  Message
214245  -4 1108  F8DBF DL6ZAJ JO40
214245 +20  337  F8DBF DF7EF JO30
214300 -12 1405  LA1DPA F8DBF -08
214315  -2 1108  F8DBF DL6ZAJ JO40
214315 +11  337  F8DBF DF7EF JO30
214330 -12 1405  LA1DPA F8DBF -08
214345  +3 1108  F8DBF DL6ZAJ JO40
214345 +20  337  F8DBF DF7EF JO30
214415  +7 1108  F8DBF DL6ZAJ JO40 (x2)
214445 +13  337  F8DBF DF7EF JO30 (x2)
051245 -14 1185  <HP/WE9G> F8DBF IN78 (x2)
053345 -15 1073  KC0GU F8DBF IN78

40m

UTC    dB Audio  Message
220000  -4 1352  PR8EP F8DBF IN78
220530  +8 2473  BD4IAA F8DBF IN78 (x5)
205145 -10 1949  II9IAGM F8DBF -12
212330  +0 1118  PY4VTL F8DBF IN78 (x8)

20m

UTC    dB Audio  Message
191830  -5  526  R3NCG F8DBF IN78
191845 -10 1480  F8DBF R3NCG -01
191900  -3  526  R3NCG F8DBF R-15
191915  -9 1480  F8DBF R3NCG RR73
192030 -11  526  SP3IPA F8DBF RR73 (x2)
175915 -11 2711  OX3LX F8DBF RR73
173400 -11  824  R3NCG F8DBF IN78
082515 -11 1474  5N0YEN F8DBF -20 (x2)
220915  +0 1427  CE8VSO F8DBF IN78 (x5)

10m

UTC    dB Audio  Message
090345 -17 2258  R1WBW F8DBF IN78
112430  -9  369  F8DBF TK5K +09
101130 -20 1797  F8DBF CN2DX -11 (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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