F4FSY — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: JN25

Receiver-side FT8 activity involving F4FSY, decoded by SO8OO in southeastern Poland. 9,895 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 93 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-10.

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 9,895 FT8 messages attributed to F4FSY as the transmitting token by decoded message structure across 93 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (52%), followed by 20 m (37%) and 40 m (9%). Most decodes (52%) 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 -13 dB.

Overview

9,895

Messages attributed

UTC dates decoded

992

Active 15-min windows

-13 dB

Estimated median S/N

Bands

80m · 181 60m · 8 40m · 897 20m · 3,670 10m · 5,139

First attributed message: 2026-06-06
Last attributed message: 2026-09-10 06:03 UTC

Observed FT8 message patterns

Attributed sample: 9,895 messages
Active dates: 93 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -21 to -2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3,621, moderate (-15 to -9 dB) 3,449, strong (≥ -8 dB) 2,825.

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 F4FSY in decoded directed-looking exchanges:

TA3XEE · Asiatic Turkey ×5 SP1ZMO · Poland ×3 SQ6NDC · Poland ×2 OH5WWA · Finland ×2 IS0JHW · Sardinia ×2 SP7ROH · Poland ×2 DL9BDR · Fed. Rep. of Germany ×2 SQ4INW · Poland ×2 SP5LST · Poland ×2 OE5BTM · Austria ×2 ON8PR · Belgium ×2 PA5BS · Netherlands ×2

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 F4FSY

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: JN25 · 1,903 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,346 km (approx.)
Last such locator decoded: 2026-09-10 04:56 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	F4FSY S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-10 06:06	60m	- / -22	F5OZC	-16 / -	3	Partial capture
09-10 06:02	80m	-23 / -8	DO1OAS	-20 / -	3	✓ Closing observed
09-10 04:55	80m	-16 / -3	SN40KZE	+10 / -10	2	Partial capture
09-10 04:54	80m	-14 / -	SN100PKP	- / -10	2	Partial capture
09-10 04:53	80m	-15 / -	LA4GHA	-12 / -8	3	✓ Closing observed
09-10 04:52	80m	-13 / -7	IK1JMJ	-20 / -	3	✓ Closing observed
09-10 04:51	80m	-22 / -7	LZ1AAW	+2 / -11	4	✓ Full exchange observed
09-10 04:48	80m	-13 / -1	OK1GK	+13 / -	3	✓ Closing observed
09-10 04:47	80m	-17 / -	M9DNC	- / -11	2	✓ Closing fragment
09-10 04:40	80m	-12 / -	KY2J	- / -15	2	Partial capture
09-10 04:37	80m	-8 / -	KY2J	- / -13	2	Partial capture
09-10 04:35	80m	-12 / -15	DO1LR	-6 / -	4	✓ Closing observed
09-10 04:34	80m	-16 / -	KY2J	- / -12	2	Partial capture
09-10 04:32	80m	-13 / -8	K1QD	-6 / -10	5	✓ Full exchange observed
09-10 04:29	80m	-18 / -	KE4EB	- / -3	2	✓ Closing fragment
09-10 04:26	80m	-15 / -12	SN100PKP	+4 / -12	2	Partial capture
09-10 04:24	80m	-14 / -9	DO9FSE	-17 / -7	5	✓ Full exchange observed
09-09 18:41	60m	- / -16	SQ4VW	-1 / -	2	✓ Closing fragment
09-09 18:33	60m	- / -21	DL9BDR	-8 / -	2	✓ Closing fragment
09-09 18:31	60m	- / -10	S58X	-4 / -	2	✓ Closing fragment
09-09 18:25	80m	-16 / -7	DA6PI	-19 / -	2	✓ Closing observed
09-09 18:24	80m	-17 / -	HB3JQQ	- / -7	3	Partial capture
09-09 18:23	80m	-14 / -	IZ5IMD	- / +4	2	Partial capture
09-09 18:21	80m	-13 / -	DL1RMY	- / -22	2	✓ Closing fragment
09-09 18:18	80m	-14 / -	PA3DII	- / -12	2	Partial capture
09-09 18:18	80m	-17 / +5	HB9AZZ	+13 / +2	4	✓ Full exchange observed
09-09 18:16	80m	-11 / -9	UT1CR	-3 / -	3	✓ Closing observed
09-09 18:14	80m	-20 / -18	R3BDQ	-2 / -13	3	✓ Full exchange observed
09-09 18:10	80m	-22 / -5	DO3KI	+10 / +2	4	✓ Full exchange observed
09-09 18:08	80m	-15 / -4	SP1LIS	+12 / -	3	✓ Closing observed
09-09 18:07	80m	-16 / -	E74MW	+13 / -	2	✓ Closing observed
09-09 18:05	80m	-22 / -	OH3CD	-4 / -	2	✓ Closing observed
09-09 17:57	80m	-12 / -10	OZ7CL	-2 / -8	4	✓ Full exchange observed
09-09 17:56	80m	-10 / -	DH1DK	- / -10	2	Partial capture
09-09 17:47	60m	- / -15	DG1WP	-19 / -	2	✓ Closing fragment
09-09 16:16	60m	- / -20	Z68PX	+2 / -	3	Partial capture
09-09 16:11	60m	- / -17	IV3IFN	-11 / -	2	✓ Closing fragment
09-09 08:01	40m	-20 / -	SP7WMI	- / -22	3	Partial capture
09-09 07:58	40m	-18 / -	PH0RON	- / -8	4	✓ Closing fragment
09-09 07:55	40m	-22 / -	VK2ZR	- / -12	2	Partial capture
09-09 07:53	40m	-22 / -	OE4LTB	- / -9	2	Partial capture
09-09 07:51	40m	-21 / -	E79KO	- / -16	2	Partial capture
09-09 07:49	40m	-23 / -	EC5CIA	- / -13	2	✓ Closing fragment
09-09 07:47	40m	-23 / -	F8FSC/P	- / -15	3	✓ Closing fragment
09-09 07:45	40m	-20 / -	E79KO	- / -11	3	Partial capture
09-09 07:01	40m	-17 / -7	PD2MVL	-17 / -	2	✓ Closing observed
09-09 06:55	40m	-16 / -	N2QN	- / -14	3	Partial capture
09-09 06:50	40m	-17 / -	GW0TRZ	- / +1	2	✓ Closing fragment
09-09 06:48	40m	-15 / -	G3RTU	- / -3	3	Partial capture
09-09 06:43	40m	-13 / -	DF2AP	- / 0	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
161730  +0  306  F4FSY Z68PX R-20
174430 -16 1793  F4FSY ON7VOX 73
174700 -20 1690  F4FSY DG1WP R-15 (x2)
174915 -24 1738  CQ F4FSY JN25                         a1
175045 -21 1738  OE5OBR F4FSY -10
183145  -5 1066  F4FSY S58X R-10 (x2)
183345 -10 2331  F4FSY DL9BDR R-21 (x2)
184115  -2 1824  F4FSY SQ4VW R-16 (x2)
060645 -17 1846  F4FSY F5OZC R-22 (x3)

80m

UTC    dB Audio  Message
045230  +0 1835  F4FSY LZ1AAW RR73
045245 -13 1639  IK1JMJ F4FSY RR73
045300 -18 1344  F4FSY IK1JMJ 73
045315 -22 1639  NA5C F4FSY -07
045345 -15 1639  LA4GHA F4FSY -08 (x2)
045430 -12  524  F4FSY LA4GHA 73
045445 -13 1639  SN100PKP F4FSY -10 (x2)
045545 -16 1639  <SN40KZE> F4FSY -10
045600 +10 1145  F4FSY SN40KZE R-03
045645 -10 1639  CQ F4FSY JN25
060230 -19 1639  F4FSY DO1OAS -08 (x2)
060315 -23 1639  DO1OAS F4FSY 73

40m

UTC    dB Audio  Message
075530 -24 1797  VK2ZR F4FSY -12 (x2)
075700 -22 1797  EA1HWP F4FSY -11
075800 -22 1797  PH0RON F4FSY -08 (x4)
080100 -20 1797  SP7WMI F4FSY -22 (x3)
093700 -24 1749  PD9ML F4FSY -08
094545 -14 2380  F4FSY DD5KP R-19
094845  +0  988  F4FSY DK5DW R-14
104945 -24 1822  G8NWC F4FSY RR73
105115 -24 1823  G7EFL F4FSY -14

10m

UTC    dB Audio  Message
130645  -9 1941  PY4WVZ F4FSY -10
130715 -23 1941  Z62NS F4FSY -09 (x3)
130915 -15 1942  CT7BIN F4FSY -11 (x4)
131145 -10 1941  Z62NS F4FSY -12 (x3)
131315 -10 1941  CQ F4FSY JN25
131345 -14 1941  YB4KAR F4FSY -11 (x2)
131515 -14 1941  CQ F4FSY JN25

20m

UTC    dB Audio  Message
181545  +9 2191  BA4IAW F4FSY -13 (x2)
181645  +1 2191  BG0FQU F4FSY -13 (x2)
083000 -24 1751  CQ F4FSY JN25                         a1
084230 -11 1751  DJ9HX F4FSY -09
075115 +12 1767  OZ1SUN F4FSY -11 (x2)
075215  +4 1767  PE4BEN F4FSY -14 (x3)
075345  -1 1767  M7OKF F4FSY -15
075415  +3 1767  YO3RU F4FSY -11 (x2)
075515  +4 1767  CQ F4FSY JN25

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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