F4IBJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: IN96

Receiver-side FT8 activity involving F4IBJ, decoded by SO8OO in southeastern Poland. 1,785 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 58 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-22.

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 1,785 FT8 messages attributed to F4IBJ as the transmitting token by decoded message structure across 58 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (95%), followed by 10 m (3%) and 40 m (2%). Most decodes (63%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (68%); the estimated median was -3.3 dB.

Overview

1,785

Messages attributed

UTC dates decoded

252

Active 15-min windows

-3.3 dB

Estimated median S/N

Bands

40m · 32 20m · 1,704 10m · 49

First attributed message: 2026-06-06
Last attributed message: 2026-09-22 20:42 UTC

Observed FT8 message patterns

Attributed sample: 1,785 messages
Active dates: 58 UTC dates
Estimated median S/N: -3.3 dB
Estimated 10th-90th percentile: -18 to +9.3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 291, moderate (-15 to -9 dB) 278, strong (≥ -8 dB) 1,216.

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 F4IBJ in decoded directed-looking exchanges:

JR5XPG · Japan ×2 PD1ADA · Netherlands ×2 JA4FKX · Japan 2E0MRK · England 3W9A · Vietnam 4O7CC · Montenegro 4S6ARW · Sri Lanka 6K5XZE · Republic of Korea 9A2EY · Croatia 9M2DGA · West Malaysia 9V1DX · Singapore A41KB · Oman

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 F4IBJ

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: IN96 · 1,220 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,724 km (approx.)
Last such locator decoded: 2026-09-22 20:39 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	F4IBJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-22 20:53	40m	- / -23	OZ1LHK	-7 / -	2	✓ Closing fragment
09-22 20:47	40m	- / -7	PD0RCQ	+2 / -	2	✓ Closing fragment
09-22 20:43	40m	- / -2	OV9R	+3 / -	2	✓ Closing fragment
09-22 20:42	40m	- / -	IU8RFW	-11 / -	5	Partial capture
09-22 20:41	40m	-9 / -6	DK7QJ	-5 / -	4	✓ Closing observed
09-22 20:39	40m	-10 / 0	DM1SV	+2 / +3	5	✓ Full exchange observed
09-22 20:35	40m	-8 / -	RI1FJZ	- / -11	2	✓ Closing fragment
09-22 20:19	40m	- / +6	G7NUT	-4 / -	2	✓ Closing fragment
09-22 20:17	40m	- / -	DA0O	-8 / -	2	✓ Closing fragment
09-21 20:51	40m	-10 / -	RI1FJZ	- / -	7	Partial capture
09-21 20:41	40m	-14 / -	V51WH	- / -	2	Partial capture
09-01 21:30	20m	-24 / -	LU4CMD	- / -25	2	Partial capture
09-01 21:24	20m	-20 / -	LZ5TO	- / -	2	Partial capture
08-31 16:15	20m	+7 / -	9M2DGA	- / -8	6	✓ Closing fragment
08-31 16:08	20m	+1 / -	BI1AFK	- / -25	9	✓ Closing fragment
08-31 15:57	20m	+10 / -	<...>	- / -16	5	Partial capture
08-30 22:30	20m	-17 / -	<...>	- / -	4	Partial capture
08-30 22:28	20m	-19 / -	JR2LJO	- / -	5	Partial capture
08-30 22:11	20m	-17 / -	JR7GBL	- / -8	7	✓ Closing fragment
08-30 21:43	20m	-19 / -16	JA5AUC	-5 / -7	5	✓ Full exchange observed
08-30 21:25	20m	+10 / -	LA2VLA	- / -9	6	✓ Closing fragment
08-30 21:24	20m	+12 / -	OH6FSO	- / 0	2	✓ Closing fragment
08-30 21:15	20m	+9 / -	BG0FQU	- / -	5	Partial capture
08-30 21:06	20m	+10 / -	VK2XZ	- / -19	9	Partial capture
08-30 21:06	20m	+11 / -	4O7CC	- / -5	3	✓ Closing fragment
08-30 21:05	20m	+2 / -5	2E0MRK	+3 / -11	5	✓ Full exchange observed
08-30 21:02	20m	+7 / -	OH6FSO	- / -9	3	Partial capture
08-30 19:27	20m	+9 / -	BG7BVP	- / -11	2	✓ Closing fragment
08-30 12:37	20m	+4 / -	BI1AFK	- / -	3	Partial capture
08-30 12:35	20m	+2 / -5	R7OV	-13 / -8	5	✓ Full exchange observed
08-30 12:33	20m	+6 / -21	TA3F	-10 / -18	8	✓ Full exchange observed
08-30 12:28	20m	+10 / -	LA6PTA	-6 / 0	3	✓ Full exchange observed
08-30 12:25	20m	+4 / -	TK4QP	- / -3	2	✓ Closing fragment
08-30 12:21	20m	+7 / -16	G3PWG	-3 / -9	5	✓ Full exchange observed
08-30 12:15	20m	+9 / -	DJ0MK	- / -22	5	✓ Closing fragment
08-30 12:13	20m	+5 / -11	G3PWG	-5 / -8	6	Partial capture
08-30 12:09	20m	+9 / -	OE9IHR	- / -	5	Partial capture
08-30 12:06	20m	+8 / -	RM6OS	- / -	2	Partial capture
08-30 09:59	20m	+2 / +8	DD0UM	-7 / 0	5	Partial capture
08-29 20:14	20m	-23 / +2	LZ6C	-10 / 0	5	✓ Full exchange observed
08-29 17:07	20m	-11 / -	<...>	- / -	4	Partial capture
08-29 17:02	20m	-11 / -	UA9KBC	- / -	9	Partial capture
08-29 16:44	20m	-8 / -7	E27EEL	-2 / -	3	✓ Closing observed
08-29 16:40	20m	-1 / -	4S6ARW	- / -17	5	✓ Closing fragment
08-29 16:32	20m	-2 / -	JA3EGF	- / -	2	Partial capture
08-29 16:29	20m	-7 / -	UN2NC	- / -14	3	Partial capture
08-29 16:23	20m	-7 / -5	A41KB	-8 / -3	3	✓ Full exchange observed
08-29 16:20	20m	-4 / -	BD4WBT	- / -	2	Partial capture
08-29 16:14	20m	-4 / -	JA6GCE	-7 / -	4	Partial capture
08-29 08:48	20m	- / -1	R4FDD	-8 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
204115 -12 1484  F4IBJ DK7QJ JO41 (x2)
204200  -9 1484  DK7QJ F4IBJ RR73
204215  +1 1484  F4IBJ DK7QJ 73
204245  -8 1484  F4IBJ IU8RFW JN70
204315  +3 2685  F4IBJ OV9R -02
204315 -12 1484  F4IBJ IU8RFW JN70
204345  +3 2685  F4IBJ OV9R RR73
204345 -12 1484  F4IBJ IU8RFW JN70 (x3)
204700  +2  822  F4IBJ PD0RCQ -07 (x2)
205345  -6  893  F4IBJ OZ1LHK -23 (x2)

20m

UTC    dB Audio  Message
161115  +5 1566  BI1AFK F4IBJ IN96 (x4)
161315  +0 1566  CQ F4IBJ IN96
161530  -7 1182  9M2DGA F4IBJ IN96 (x6)
212445 -21 1666  LZ5TO F4IBJ IN96 (x2)
213045 -24 1666  LU4CMD F4IBJ IN96 (x2)

10m

UTC    dB Audio  Message
104845 -21 1701  EX8ABR F4IBJ IN96
095000 -23 1638  JA4FKX F4IBJ R-15 (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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