F4DIH — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: JN17

Receiver-side FT8 activity involving F4DIH, decoded by SO8OO in southeastern Poland. 70 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-08 and 2026-08-06.

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 70 FT8 messages attributed to F4DIH as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (97%), followed by 40 m (3%). Most decodes (83%) fell within the six-hour window 07:00-13:00 UTC. 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

40m · 2 20m · 68

First attributed message: 2026-07-08
Last attributed message: 2026-08-06 13:17 UTC

Observed FT8 message patterns

Attributed sample: 70 messages
Active dates: 4 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -22 to -8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 31, moderate (-15 to -9 dB) 31, strong (≥ -8 dB) 8.

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 F4DIH in decoded directed-looking exchanges:

2E0OEW · England 7X2KF · Algeria DL3MIB · Fed. Rep. of Germany E70SZ · Bosnia-Herzegovina EA2DYB · Spain EC5M · Spain HB9CNU/P · Switzerland HB9SFL · Switzerland IQ4JO · Italy IU2WHH · Italy KF0YOB · United States LZ2INP · Bulgaria

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 F4DIH

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: JN17 · 48 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,401 km (approx.)
Last such locator decoded: 2026-08-06 13:17 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	F4DIH S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-23 05:55	20m	- / -19	R4FDW	-7 / -	6	Partial capture
08-06 13:15	20m	-10 / -	LB8X	- / -	5	Partial capture
08-06 12:51	20m	- / -17	EC5M	-18 / -	3	✓ Closing fragment
08-06 12:31	20m	-19 / -	SA3SHN	- / -15	3	Partial capture
08-06 12:26	20m	-14 / -	TK4QP	- / -8	2	Partial capture
07-17 09:35	20m	- / -8	IK4TVP	-11 / -	5	Partial capture
07-17 09:15	20m	- / -	DG6TOM	-18 / -	2	Partial capture
07-17 09:12	20m	-14 / -	KF0YOB	- / -	4	Partial capture
07-17 09:05	20m	- / 0	IU2WHH	-19 / -	2	✓ Closing fragment
07-17 09:00	20m	-14 / -	OE6TNO	-23 / -11	3	Partial capture
07-17 08:54	20m	-11 / -	KP2B	- / -6	5	Partial capture
07-17 08:51	20m	-10 / -	CU3HN	- / -1	2	Partial capture
07-17 08:47	20m	-12 / -	KO1U	- / -	4	Partial capture
07-17 08:46	20m	- / -	DL1R	0 / -	8	Partial capture
07-17 08:01	20m	- / +9	DK5UP	-7 / -	12	Partial capture
07-17 07:49	20m	- / -	UT5MD	-8 / -	2	Partial capture
07-17 06:57	20m	-20 / -8	E70SZ	-8 / -5	5	✓ Full exchange observed
07-17 06:55	20m	- / -9	YO9PH	-12 / -	2	✓ Closing fragment
07-10 05:55	40m	- / -	OE5ROR	-12 / -	7	Partial capture
07-10 05:52	40m	- / -7	SP2SGZ	-9 / -	2	Partial capture
07-08 16:40	20m	- / -19	DL3MIB	-7 / -	5	✓ Closing fragment
07-08 16:27	20m	- / -10	IW4APB	-6 / -	4	Partial capture
07-08 08:19	20m	- / -	LZ2INP	-11 / -	2	✓ Closing fragment
07-08 08:17	20m	- / -4	DJ1TU	-11 / -	5	Partial capture
07-08 08:13	20m	-21 / -	EA2DYB	- / +10	2	✓ Closing fragment
07-08 07:59	20m	-19 / -	A61QQ	- / -	2	Partial capture
07-04 06:16	20m	- / -	IQ4JO	-2 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
125130 -16 1926  F4DIH EC5M R-17 (x2)
125345 -24 1522  CQ F4DIH JN17                         a1
125430 -15  831  F4DIH I1FLC -06
131545  -7  822  LB8X F4DIH JN17 (x5)
055515 -19 1987  F4DIH R4FDW -19 (x6)

40m

UTC    dB Audio  Message
045800 -12  553  CQ F4DIH JN17                         a1 (x2)
055245 -10  677  F4DIH SP2SGZ JO94 (x2)
055545 -10 2018  F4DIH OE5ROR JN78 (x7)

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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