F4ESO — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: JN39

Receiver-side FT8 activity involving F4ESO, decoded by SO8OO in southeastern Poland. 903 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 48 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-18.

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 903 FT8 messages attributed to F4ESO as the transmitting token by decoded message structure across 48 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (47%), followed by 40 m (22%) and 20 m (15%). Most decodes (88%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

903

Messages attributed

UTC dates decoded

108

Active 15-min windows

-7 dB

Estimated median S/N

Bands

80m · 421 60m · 131 40m · 200 20m · 136 10m · 15

First attributed message: 2026-06-07
Last attributed message: 2026-09-18 22:11 UTC

Observed FT8 message patterns

Attributed sample: 903 messages
Active dates: 48 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -17 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 129, moderate (-15 to -9 dB) 233, strong (≥ -8 dB) 541.

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 F4ESO in decoded directed-looking exchanges:

E70SZ · Bosnia-Herzegovina ×2 IK4CBO · Italy ×2 SP5JMA · Poland ×2 F1SZC · France ×2 F8BON · France ×2 DK7UY · Fed. Rep. of Germany DL9CTA · Fed. Rep. of Germany DO9BAU · Fed. Rep. of Germany R2EC · European Russia 7Z1BQ · Saudi Arabia A61QQ · United Arab Emirates CU6NS · Azores

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 F4ESO

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: JN39 · 436 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,063 km (approx.)
Last such locator decoded: 2026-09-18 22:10 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	F4ESO S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-18 22:10	80m	-4 / -	M8JJS	- / -	2	✓ Closing fragment
09-18 22:07	80m	-8 / -	DO3KTY	- / -	4	Partial capture
09-18 22:00	80m	-1 / -16	RK9UE	-5 / -17	4	✓ Full exchange observed
09-18 21:59	80m	- / -	SP3BZU	+12 / -	4	Partial capture
09-18 21:58	80m	-2 / -	TM35DCM	- / -	2	Partial capture
09-18 21:56	80m	+1 / -	M8JJS	- / -	3	Partial capture
09-18 21:55	80m	- / -13	EU7FBB	+7 / -	2	✓ Closing fragment
09-18 21:53	80m	-3 / -	SP100PKP	- / -4	2	Partial capture
09-17 22:15	60m	-14 / -	TF8KW	- / -14	3	✓ Closing fragment
09-17 22:12	80m	-3 / -	R4HHN	- / -	3	Partial capture
09-17 22:07	80m	-8 / -	DO8JB	- / -	2	Partial capture
09-17 22:02	80m	-4 / +3	DF2RG	+2 / +7	5	✓ Full exchange observed
09-17 19:31	40m	-4 / -	M9UTD	- / -	3	Partial capture
09-17 19:27	40m	-4 / -14	E70SZ	-3 / -	4	✓ Closing observed
09-17 19:24	40m	-2 / -	WD0U/DU3	- / -11	3	Partial capture
09-17 19:22	40m	-1 / -12	HZ1TT	-8 / -8	6	✓ Full exchange observed
09-17 19:19	40m	- / -	PF1B	-3 / -	2	Partial capture
09-17 19:18	40m	-3 / +7	E77WM	-10 / -	3	✓ Closing observed
09-16 20:54	40m	-10 / -	SP7TF	- / -4	2	✓ Closing fragment
09-16 20:52	40m	-7 / +3	IZ8GUU	+2 / +6	6	✓ Full exchange observed
09-16 20:50	40m	-9 / -	EH3ST	- / -8	3	✓ Closing fragment
09-16 20:48	40m	-12 / -	OH7ML	- / -	2	Partial capture
09-16 20:32	40m	0 / -	9A5MP	- / -14	3	✓ Closing fragment
09-16 20:29	40m	-2 / +8	II6IGTO	-12 / -10	3	Partial capture
09-16 20:27	40m	-2 / -	F/G0LRH	- / -9	2	Partial capture
09-16 20:25	40m	-3 / -	OM2BK	- / -9	2	✓ Closing fragment
09-16 20:22	40m	-4 / -	RN3YN	- / -15	3	✓ Closing fragment
09-15 21:01	60m	-10 / -	GX3RAF/P	- / +6	3	✓ Closing fragment
09-15 20:55	80m	-12 / -16	SQ5FM	0 / -	5	Partial capture
09-15 20:54	80m	-2 / -	IW2CAK	-14 / -	3	✓ Closing observed
09-15 20:52	80m	-2 / -	ON3CCC	- / -11	3	✓ Closing fragment
09-15 20:46	40m	-1 / -	M9LDX	- / -4	5	✓ Closing fragment
09-15 20:45	40m	-2 / -	SM6USU	- / -8	2	Partial capture
09-15 20:44	40m	0 / -	M6DPS	- / -	2	Partial capture
09-15 20:42	40m	-5 / -	F4CQS	- / -	3	Partial capture
09-15 20:39	40m	-2 / -	RX7O	- / -15	3	✓ Closing fragment
09-13 06:04	40m	-6 / -	CR7BRV	- / -	2	✓ Closing fragment
09-10 21:22	80m	-4 / -	EM70WWW	- / -	3	Partial capture
09-10 21:21	80m	0 / -	OZ/KD0NDU	- / -	3	Partial capture
09-10 21:17	80m	-8 / -17	UA9LT	-8 / -18	4	✓ Full exchange observed
09-10 21:13	80m	-4 / -	DL6EBC	- / -13	3	✓ Closing fragment
09-10 21:12	80m	+2 / -	EC5M	- / -20	3	✓ Closing fragment
09-10 21:10	80m	-1 / -	IQ2AAH	- / -9	3	✓ Closing fragment
09-10 21:09	80m	0 / -	R5VCR	- / -	2	Partial capture
09-10 21:07	80m	-8 / -13	R6ODX	+12 / -7	4	✓ Full exchange observed
09-10 21:05	80m	-4 / +10	DA6PI	-10 / -1	5	✓ Full exchange observed
09-10 21:02	80m	- / +1	DK0NID	-4 / -	2	✓ Closing fragment
09-08 22:04	80m	+1 / +2	SQ8NA	+13 / -11	5	✓ Full exchange observed
09-08 22:01	80m	+2 / +4	LA4NM	-2 / -3	6	✓ Full exchange observed
09-08 21:57	80m	+4 / -	I1WUA	- / -20	5	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
215915  -5 1874  TM35DCM F4ESO JN39
215930 +10 2201  F4ESO SP3BZU JO72 (x3)
220030  -5  463  F4ESO RK9UE -16
220045  -1 1874  RK9UE F4ESO R-17
220100 +14 2201  F4ESO SP3BZU JO72
220100  -5  462  F4ESO RK9UE RR73
220115  -1 1874  RK9UE F4ESO 73
220745  -9 1874  DO3KTY F4ESO JN39 (x4)
221015  -9 1874  M8JJS F4ESO JN39 (x2)

60m

UTC    dB Audio  Message
202745  -7 1203  F4ESO G8OO R-03
202800  -9 1904  G8OO F4ESO RR73
202815  -6 1203  F4ESO G8OO 73
203015 -11 1904  LA8G/P F4ESO JN39 (x2)
203145 -14 1905  ON8DM F4ESO JN39
203200 -15 2212  F4ESO ON8DM +03
203215  -9 1905  ON8DM F4ESO R+02 (x2)
210145 -11 1905  GX3RAF/P F4ESO JN39 (x3)
221500 -12 1905  TF8KW F4ESO JN39 (x3)

40m

UTC    dB Audio  Message
192245  +0 1910  HZ1TT F4ESO JN39
192300  -8 1729  F4ESO HZ1TT -12
192315  -5 1910  HZ1TT F4ESO R-08 (x2)
192400  -9 1728  F4ESO HZ1TT 73
192445  -4 1910  WD0U/DU3 F4ESO JN39 (x3)
192715  -3 1418  F4ESO E70SZ -14 (x3)
192830  -4 1910  E70SZ F4ESO 73
193100  -5 1910  M9UTD F4ESO JN39 (x3)

20m

UTC    dB Audio  Message
084245 -12 1624  F4ESO EA1FG RR73
084300  -3 1866  EA1FG F4ESO 73
084330  -6 1867  IK4TVP F4ESO R+07 (x2)
084500  -1 1866  UT8SQ F4ESO +00 (x2)
084600  +4 1866  DL1BBO F4ESO -16 (x3)
084800 -15 1867  EN35UKR F4ESO JN39 (x2)
085100 -19 1867  F5RMK F4ESO JN39 (x4)

10m

UTC    dB Audio  Message
084630 -17 1749  F4ESO Z30WWA -11
084645 -21 1878  Z30WWA F4ESO R-14
084730 -22 1749  F4ESO Z30WWA -11
084845 -21 1879  Z30WWA F4ESO R-19
084945 -20 1879  SN2WWA F4ESO R+02
085145 -13 1303  F4ESO UX3HX -12 (x6)
120130 -13 2480  F4ESO R2EC RR73
113415  -7 2496  F4ESO DK7UY -07 (x2)
114915  -7 2658  F4ESO LA2JKA +02

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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