EA3CK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Spain Most frequent locator attributed to this token: JN01

Receiver-side FT8 activity involving EA3CK, decoded by SO8OO in southeastern Poland. 65 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 6 UTC dates in the available aggregate history. Observed between 2026-07-17 and 2026-09-04.

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 65 FT8 messages attributed to EA3CK as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (83%), followed by 20 m (9%) and 10 m (8%). Most decodes (63%) fell within the six-hour window 20:00-02:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (62%); the estimated median was -12 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

40m · 54 20m · 6 10m · 5

First attributed message: 2026-07-17
Last attributed message: 2026-09-04 21:51 UTC

Observed FT8 message patterns

Attributed sample: 65 messages
Active dates: 6 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -18 to -6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 40, strong (≥ -8 dB) 12.

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 EA3CK in decoded directed-looking exchanges:

TI2FAF · Costa Rica EA3GXK · Spain R3KCW · European Russia RC5F · European Russia WB8YJF · United States DL6EL · Fed. Rep. of Germany EA2DYB · Spain EA3ACQ · Spain EW8HP · Belarus F1PBZ · France F5LMJ · France G0ANS · England

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 EA3CK

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: JN01 · 28 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,858 km (approx.)
Last such locator decoded: 2026-09-04 21:48 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	EA3CK S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-04 19:21	40m	- / +8	PA3BGQ	-5 / -	3	✓ Closing fragment
09-04 18:01	40m	-7 / -1	DL6EL	+7 / -7	4	✓ Full exchange observed
09-04 17:59	40m	-8 / -	G4DBW	- / -1	2	✓ Closing fragment
09-04 17:51	40m	-6 / -	EA3ACQ	- / 0	2	✓ Closing fragment
09-04 17:50	40m	- / -2	ON1DGN	-18 / -	3	✓ Closing fragment
09-04 17:33	40m	- / -18	UT4VL	-3 / -	2	Partial capture
09-04 17:21	40m	-10 / -	OZ4MK	- / -6	2	✓ Closing fragment
09-04 17:13	40m	- / -	DL2PR	-10 / -	3	Partial capture
09-04 17:12	40m	-14 / -4	F1PBZ	+2 / -	3	✓ Closing observed
09-04 17:12	40m	- / -	OZ4MK	-12 / -	3	Partial capture
09-04 16:27	40m	- / -	DL1EDR	+2 / -	2	Partial capture
09-03 00:32	40m	- / -12	RX3ASQ	-5 / -	5	✓ Closing fragment
08-17 20:32	20m	-17 / -	SP6AMI	- / -5	2	Partial capture
08-17 00:43	20m	- / -9	R3KCW	-14 / -	5	✓ Closing fragment
08-16 19:27	20m	- / -7	RC5F	-2 / -	4	✓ Closing fragment
07-31 23:17	20m	- / -17	EA3GXK	-14 / -	3	✓ Closing fragment
07-17 23:33	40m	-10 / +1	EW8HP	-20 / -11	5	✓ Full exchange observed
07-17 23:30	40m	-9 / +7	G0ANS	-10 / -7	4	✓ Full exchange observed
07-17 23:28	40m	-11 / -	G8GRG	-17 / -	2	✓ Closing observed
07-17 23:25	40m	-9 / -14	UA9CR	-17 / -	2	✓ Closing observed
07-17 23:23	40m	- / +1	IQ4JO	-5 / -	3	✓ Closing fragment
07-17 23:21	40m	-10 / -	SP7TF	- / -6	2	Partial capture
07-17 23:18	40m	-14 / -	EA2DYB	- / +6	2	✓ Closing fragment
07-17 23:16	40m	-19 / -	SP7TF	- / -13	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
175900  -4 1831  CQ EA3CK JN01
175930 -11 1831  G4DBW EA3CK -01 (x2)
180030  -9 1831  CQ EA3CK JN01
180130  -6 1831  DL6EL EA3CK -07
180145  +6  850  EA3CK DL6EL R-01
180200  -8 1831  DL6EL EA3CK RR73
180215  +8  849  EA3CK DL6EL 73
191815  -2 2852  EA3CK F6BHK JN24
192145  -7  374  EA3CK PA3BGQ JO22 (x3)
214800 -12 1831  CQ EA3CK JN01 (x2)
215130  -9 1832  MW7AHM EA3CK RR73

20m

UTC    dB Audio  Message
191645 -15 1853  EA2FLG EA3CK -08
192215 -13 1853  <...> EA3CK JN01
192700  -2  674  EA3CK RC5F KO85 (x4)
004300  -9 1576  EA3CK R3KCW KO90 (x5)
203015 -22 1567  CQ EA3CK JN01                         a1 (x2)
203215 -16 1568  SP6AMI EA3CK R-05 (x2)

10m

UTC    dB Audio  Message
005915 -16  850  F4NLW/P EA3CK -09
010145 -17  851  RK3AW EA3CK R-20
010315 -15  850  TI2FAF EA3CK 73
010645 -15  851  9A2WA EA3CK -05
010845 -16  851  CQ EA3CK JN01

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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