F8DO — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: JN26

Receiver-side FT8 activity involving F8DO, decoded by SO8OO in southeastern Poland. 90 FT8 messages attributed to this token as transmitter, on 60m, 40m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-18 and 2026-09-09.

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 90 FT8 messages attributed to F8DO as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (93%), followed by 60 m (7%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

60m · 6 40m · 84

First attributed message: 2026-06-18
Last attributed message: 2026-09-09 21:49 UTC

Observed FT8 message patterns

Attributed sample: 90 messages
Active dates: 9 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -20 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 39, moderate (-15 to -9 dB) 32, strong (≥ -8 dB) 19.

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 F8DO in decoded directed-looking exchanges:

CR2WWA · Azores DD9MI · Fed. Rep. of Germany DK4BP · Fed. Rep. of Germany DK4RH · Fed. Rep. of Germany DK8HC · Fed. Rep. of Germany DL2EMS · Fed. Rep. of Germany DL3MIB · Fed. Rep. of Germany DL3XRZ · Fed. Rep. of Germany DL7ACA · Fed. Rep. of Germany EB2EMZ · Spain EW8AAC · Belarus F4MGP · France

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 F8DO

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: JN26 · 42 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,298 km (approx.)
Last such locator decoded: 2026-09-09 21:48 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	F8DO S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-09 21:48	40m	-1 / -10	JY5IB	-22 / +3	6	✓ Full exchange observed
09-09 21:46	40m	+1 / -	K1ZZ	- / -	2	Partial capture
09-09 21:42	40m	+1 / -	UA4POO	- / -	3	✓ Closing fragment
09-09 21:40	60m	-21 / -8	PA3BMB	-9 / -	4	✓ Closing observed
09-09 21:36	60m	- / -	G3UHU	-3 / -	2	Partial capture
09-09 21:35	60m	- / -8	DL7GP	0 / -	4	✓ Closing fragment
09-09 21:30	40m	-2 / -19	UA4POO	-9 / -4	2	Partial capture
09-09 21:26	60m	-20 / -21	G0AZH	-9 / -	13	✓ Closing observed
09-09 21:26	60m	-21 / -18	ON7GB	+8 / +5	5	✓ Full exchange observed
08-06 21:32	60m	-22 / -21	8S7DL	-4 / -	4	✓ Closing observed
08-06 21:22	40m	-16 / -	DK4RH	- / +9	2	✓ Closing fragment
08-06 21:17	40m	-16 / -	DL3XRZ	- / -9	2	✓ Closing fragment
08-06 21:16	40m	-16 / -	M0EGG	- / +9	2	✓ Closing fragment
08-06 21:15	40m	-18 / -	DD9MI	-11 / -	2	✓ Closing observed
08-06 21:13	40m	-19 / -7	YO4NF	-17 / -	2	✓ Closing observed
08-05 21:54	40m	-20 / -1	DL3MIB	-8 / -	6	✓ Full exchange observed
08-05 21:51	40m	-18 / -11	F5RRS	-17 / -	5	✓ Full exchange observed
08-05 21:50	40m	-21 / +8	DL7ACA	-8 / -	6	✓ Full exchange observed
07-12 20:50	40m	-12 / -	UN8DSW	- / -8	4	✓ Closing fragment
07-08 21:22	40m	- / -1	DK7ZT	-6 / -	5	Partial capture
07-08 21:22	40m	- / -	S55A	-20 / -	2	Partial capture
07-08 21:21	40m	-8 / -	SP6AXW	- / -	2	✓ Closing fragment
07-08 21:21	40m	- / -	G4DBW	-7 / -	3	Partial capture
07-08 21:21	40m	- / -	F5PBG	-19 / -	3	Partial capture
07-08 21:20	40m	-7 / -	F4MGP	- / -6	2	✓ Closing fragment
07-08 21:17	40m	-6 / -6	OZ5AGJ	-19 / +4	5	✓ Full exchange observed
07-06 22:04	40m	-14 / -16	UX5UW	-17 / +6	6	✓ Full exchange observed
07-06 22:03	40m	-13 / -	DL2EMS	- / +10	2	✓ Closing fragment
07-06 22:02	40m	-14 / -11	UR4QWW	-23 / -	4	✓ Closing observed
07-06 22:00	40m	- / -	OK1WCF	-6 / -	4	Partial capture
07-03 22:27	40m	-17 / +8	TM2WWA	-6 / -	4	✓ Closing observed
07-03 22:26	40m	-16 / -	CR2WWA	- / +2	2	✓ Closing fragment
07-03 22:22	40m	-16 / -	TN8GD	- / -	4	Partial capture
06-26 22:09	40m	-11 / -6	RC6OD	-8 / -3	7	✓ Full exchange observed
06-26 22:03	40m	-14 / -	PY3ZA	- / -	8	Partial capture
06-26 22:00	40m	-14 / -9	EW8AAC	-16 / +4	6	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
212245 -17 1339  DK4RH F8DO RR73
212345 -19 1339  DK8HC F8DO RR73
213030  -9 1879  F8DO UA4POO -19
213115  -2 1339  UA4POO F8DO R-04 (x4)
214600  +1 1339  K1ZZ F8DO JN26 (x2)
214800  +1 1339  JY5IB F8DO JN26 (x2)
214845 -23 1244  F8DO JY5IB -10
214900  -3 1339  JY5IB F8DO R+03
214915 -21 1244  F8DO JY5IB RR73
214930  -3 1339  JY5IB F8DO 73

60m

UTC    dB Audio  Message
213100  -7  680  F8DO G0AZH R-21 (x2)
213515 -20 1333  CQ F8DO JN26
213530  +0 2180  F8DO DL7GP JO52
213600  -8  934  F8DO OH3GBW KP21
213600  -3  337  F8DO G3UHU IO80
213600  -1 2180  F8DO DL7GP JO52
213630  -3  335  F8DO G3UHU IO80
213630  -2 2180  F8DO DL7GP R-08 (x2)
214000 -11 1534  F8DO PA3BMB JO22 (x2)
214045 -21 1333  PA3BMB F8DO RR73
214100  -9 1535  F8DO PA3BMB 73
214130  -5 1333  F8DO DL1SRS JN49

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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