EA5JLN — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Spain Most frequent locator attributed to this token: IM99

Receiver-side FT8 activity involving EA5JLN, decoded by SO8OO in southeastern Poland. 2,437 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 19 UTC dates in the available aggregate history. Observed between 2026-08-17 and 2026-09-12.

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 2,437 FT8 messages attributed to EA5JLN as the transmitting token by decoded message structure across 19 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (77%), followed by 40 m (23%). Most decodes (86%) 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 (60%); the estimated median was -6.2 dB.

Overview

2,437

Messages attributed

UTC dates decoded

172

Active 15-min windows

-6.2 dB

Estimated median S/N

Bands

40m · 560 20m · 1,877

First attributed message: 2026-08-17
Last attributed message: 2026-09-12 20:17 UTC

Observed FT8 message patterns

Attributed sample: 2,437 messages
Active dates: 19 UTC dates
Estimated median S/N: -6.2 dB
Estimated 10th-90th percentile: -16 to +4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 302, moderate (-15 to -9 dB) 670, strong (≥ -8 dB) 1,465.

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 EA5JLN in decoded directed-looking exchanges:

TA2ED · Asiatic Turkey ×3 DL7ACA · Fed. Rep. of Germany ×2 JA7MWC · Japan ×2 5Z4VJ · Kenya ×2 RN6MA · European Russia ×2 LB5CK · Norway ×2 F5PBG · France ×2 F1PBZ · France ×2 US2YW · Ukraine ×2 DK4RH · Fed. Rep. of Germany ×2 EA1AOC · Spain ×2 OZ5AGJ · Denmark ×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 EA5JLN

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: IM99 · 1,138 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,129 km (approx.)
Last such locator decoded: 2026-09-12 20:14 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	EA5JLN S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-12 20:17	40m	- / -	DL3IAK	-4 / -	3	Partial capture
09-12 20:15	40m	-9 / -	DK5AN/P	-15 / -12	6	Partial capture
09-12 20:11	40m	-16 / -16	R7ZY	+6 / -9	6	✓ Full exchange observed
09-12 20:09	40m	-8 / -	HB9ZHK	- / -12	2	✓ Closing fragment
09-12 20:07	40m	-9 / -	BG2GWN	- / -	3	Partial capture
09-12 20:06	40m	-12 / -	EA4RKC	- / -2	2	✓ Closing fragment
09-12 20:02	40m	-10 / 0	RN6MA	-6 / -	3	✓ Closing observed
09-12 19:57	40m	0 / -	BG2GWN	- / -	2	Partial capture
09-12 19:55	40m	-7 / -	RA3WY/P	- / -	2	Partial capture
09-10 21:59	40m	- / -	F4BYA	+12 / -	3	Partial capture
09-09 23:54	40m	-16 / -	YV4EBD	- / -7	4	Partial capture
09-09 23:52	40m	-15 / -	4S6ARW	- / -	3	Partial capture
09-09 23:51	40m	-14 / -	YV5OIE	- / -	2	Partial capture
09-09 23:49	40m	- / -	RN6HK	+16 / -	3	Partial capture
09-09 23:49	40m	-6 / -17	UA9CR	-2 / -8	7	✓ Full exchange observed
09-09 23:48	40m	-5 / -	TF8KW	- / -12	3	✓ Closing fragment
09-09 23:47	40m	-7 / -	PJ2LS	- / -	2	Partial capture
09-09 23:46	40m	-9 / -	J38DX	- / -	3	Partial capture
09-09 23:44	40m	-15 / -	TF8KW	- / -12	3	Partial capture
09-09 23:40	40m	- / -14	UK8OM	+2 / -	2	✓ Closing fragment
09-09 23:38	40m	-16 / -	BH4GUU	-18 / -10	6	Partial capture
09-09 23:36	40m	-12 / -	HC2GRC	- / 0	3	Partial capture
09-09 23:35	40m	-14 / -	K8MDB	- / -5	2	Partial capture
09-09 23:33	40m	-14 / -	TF8KW	- / -	2	Partial capture
09-09 23:31	40m	-12 / -	J38DX	- / -	5	Partial capture
09-09 23:29	40m	-9 / -	KF9UG	- / -9	3	✓ Closing fragment
09-09 23:29	40m	- / -	RN6HK	+8 / -	4	Partial capture
09-09 23:28	40m	-8 / +2	VO1AW	-12 / +1	4	✓ Full exchange observed
09-09 23:27	40m	-8 / -	R5AV	- / -13	2	✓ Closing fragment
09-09 23:14	40m	-16 / -	KA3EHL	- / -11	2	Partial capture
09-09 23:11	40m	-15 / -	IU2HUQ	- / -	2	✓ Closing fragment
09-09 22:51	40m	- / -16	UR9QQ	-21 / -	2	✓ Closing fragment
09-09 22:48	40m	- / -	PD1BER	-15 / -	4	Partial capture
09-09 22:45	40m	-6 / -	WY5I	-8 / +2	7	Partial capture
09-09 22:43	40m	- / -10	RC9WC	0 / -	3	Partial capture
09-09 22:42	40m	- / -	PD1BER	-15 / -	6	Partial capture
09-09 22:41	40m	- / -	UR9QQ	-15 / -	15	Partial capture
09-09 22:40	40m	- / -6	ON1BH	-12 / -	2	Partial capture
09-09 22:39	40m	- / -	G0CMQ	-3 / -	4	Partial capture
09-09 22:37	40m	- / -	M8FQT	-8 / -	7	Partial capture
09-09 22:35	40m	- / -	SP5EXA	-14 / -	3	Partial capture
09-09 22:34	40m	- / -	UR9QQ	-14 / -	2	Partial capture
09-09 22:33	40m	- / -	PD7BDN	-15 / -	3	Partial capture
09-09 22:31	40m	- / -	DR800WE	-3 / -	2	Partial capture
09-09 22:31	40m	- / -	RX9WM	+6 / -	3	Partial capture
09-09 22:27	40m	0 / -	7Z1BQ	- / -	2	Partial capture
09-09 22:22	40m	- / -8	RC9WC	-3 / -	3	Partial capture
09-09 22:18	40m	-2 / -	Z68PX	- / -7	6	✓ Closing fragment
09-09 22:17	40m	-5 / -	E78W	- / -	2	Partial capture
09-09 22:14	40m	-7 / -	EA8BBJ	- / -9	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
201215 +10 2456  EA5JLN R7ZY KN98
201230 -16 1737  R7ZY EA5JLN -09
201245  +6 2456  EA5JLN R7ZY R-16 (x2)
201330 -14 1738  CQ EA5JLN IM99 (x2)
201545 -15 1806  EA5JLN DK5AN/P JO54 (x2)
201630  -8 1738  DK5AN/P EA5JLN -12
201645 -15 1806  EA5JLN DK5AN/P JO54 (x2)
201715  -9  343  EA5JLN DL3IAK JN49
201730 -10 1737  DK5AN/P EA5JLN -12
201745  -3  343  EA5JLN DL3IAK JN49 (x2)

20m

UTC    dB Audio  Message
205600  +4 1518  <...> EA5JLN IM99 (x3)
205730  +3 1518  CQ EA5JLN IM99
205815 -17 1518  EA5JLN M6GPH IO83 (x2)
205900  -3 1630  M6GPH EA5JLN +11
205915 -11 1518  EA5JLN M6GPH R+14
205930  -7 1629  M6GPH EA5JLN RR73
205945 -14 1518  EA5JLN M6GPH 73
210000  -5 1630  M7OXP EA5JLN +02
210015 -13 2614  EA5JLN M7OXP R-09 (x3)
213045  -1 1425  CX1AR EA5JLN IM99

10m

UTC    dB Audio  Message
182745 -11 2732  EA5JLN F1PBZ RR73
184245  +1  641  EA5JLN EA7LHN IM77 (x3)

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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