EA4Z — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Spain Most frequent locator attributed to this token: IN80

Receiver-side FT8 activity involving EA4Z, decoded by SO8OO in southeastern Poland. 212 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-08-31.

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 212 FT8 messages attributed to EA4Z as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (78%), followed by 40 m (22%). Most decodes (67%) 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 -9 dB.

Overview

212

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

40m · 47 20m · 165

First attributed message: 2026-06-09
Last attributed message: 2026-08-31 19:30 UTC

Observed FT8 message patterns

Attributed sample: 212 messages
Active dates: 9 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -15 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 92, strong (≥ -8 dB) 103.

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 EA4Z in decoded directed-looking exchanges:

RN6MA · European Russia ×2 BA3QIQ · China BG4OOO · China DA2RB · Fed. Rep. of Germany DF2SL · Fed. Rep. of Germany EG7VER · Spain F1IQH · France F4HSB · France G4HUE · England G6MVF · England HP1RY · Panama IW5ALZ · Italy

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 EA4Z

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: IN80 · 116 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,193 km (approx.)
Last such locator decoded: 2026-08-31 19:29 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	EA4Z S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-01 09:58	40m	- / -24	PE9JAN	-22 / -	4	✓ Closing fragment
08-31 19:29	20m	0 / -	M0BXF	-1 / +10	3	✓ Closing observed
08-31 19:28	20m	0 / -	DF2SL	-4 / -11	3	✓ Closing observed
08-31 19:27	20m	-1 / -	BG4OOO	- / -17	2	✓ Closing fragment
08-31 19:25	20m	-3 / -	BA3QIQ	- / -17	2	✓ Closing fragment
08-31 19:23	20m	-6 / -	PH9OY	- / +2	2	✓ Closing fragment
08-31 19:20	20m	-2 / -	M7SZB	0 / -14	3	✓ Closing observed
08-18 20:05	40m	- / -13	RN6MA	-15 / -	3	✓ Closing fragment
08-17 20:47	40m	- / -7	DG5PW	-24 / -	2	Partial capture
08-17 20:41	40m	- / -1	DL1MST	-18 / -	2	Partial capture
07-23 21:07	20m	+7 / -	LU6ABT	- / -20	2	✓ Closing fragment
07-23 21:05	20m	+6 / -	LU3DLY	-5 / +9	3	✓ Closing observed
07-23 13:22	20m	- / -	PD2WL	-21 / -	3	Partial capture
07-23 13:00	20m	- / -5	IN3IJJ	-14 / -	2	Partial capture
07-23 12:57	20m	- / +10	F4HSB	-16 / -	5	✓ Closing fragment
07-16 20:04	20m	- / -	EG7VER	-11 / -	2	✓ Closing fragment
07-16 19:51	20m	- / +4	M7WFZ	-24 / -	3	✓ Closing fragment
07-16 19:50	20m	- / -12	M7JZT	-19 / -	3	Partial capture
07-10 13:53	20m	-6 / -	DA2RB	- / -7	3	✓ Closing fragment
07-10 13:49	20m	-10 / -	M7OOT	- / -16	2	✓ Closing fragment
07-09 22:31	20m	-3 / -	DL1R	- / -24	7	Partial capture
07-09 22:28	20m	-4 / -	HP1RY	- / +4	2	✓ Closing fragment
07-09 22:26	20m	-7 / -	W4UTZ	- / -11	4	✓ Closing fragment
07-09 22:22	20m	-4 / -	WA3JWP	- / -9	2	✓ Closing fragment
07-09 22:07	20m	-4 / -	W4UTZ	- / -12	3	Partial capture
07-09 22:02	20m	-12 / -	OH3CD	- / -7	2	✓ Closing fragment
07-09 21:56	20m	-12 / -	PY5AQ	- / -17	2	✓ Closing fragment
07-09 14:28	20m	- / -5	F5URG	-3 / -	4	Partial capture
07-09 14:21	20m	- / +10	G4HUE	-2 / -	3	✓ Closing fragment
07-09 14:18	20m	- / -6	RN6MA	+7 / -	2	✓ Closing fragment
07-09 14:18	20m	- / -	M7JVH	-12 / -	4	Partial capture
07-09 14:10	20m	- / -8	M0PPT	-14 / -	2	✓ Closing fragment
07-09 14:08	20m	- / +2	F1IQH	-3 / -	3	✓ Closing fragment
07-09 14:05	20m	- / -	<...>	-3 / -	2	Partial capture
07-09 14:02	20m	- / -4	PD3LKN	-17 / -	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
204145 -14 2093  EA4Z DL1MST JO30 (x2)
204615 -24 1641  EA4Z DM1HR R-11
204715 -23 1641  EA4Z DG5PW JO30 (x2)
200015  -9 2632  EA4Z F1PBZ -06
200515 -15 1767  EA4Z RN6MA -13 (x3)
095445 -24 1913  EA4Z G6ZRV JO02
095845 -20 1637  EA4Z PE9JAN JO22 (x4)

20m

UTC    dB Audio  Message
192500  -1 1759  BA3QIQ EA4Z -17 (x2)
192600  +0 1759  CQ EA4Z IN80 (x2)
192700  +1 1759  BG4OOO EA4Z R-17 (x2)
192800  -3 1759  CQ EA4Z IN80
192815  -4  763  EA4Z DF2SL JN58
192830  -1 1759  DF2SL EA4Z -11 (x2)
192930  -5 1759  CQ EA4Z IN80
192945  -1 2446  EA4Z M0BXF IO83
193000  -1 1759  M0BXF EA4Z +10 (x2)
193100 -16 1727  EA4Z IZ3ZOF JN65

10m

UTC    dB Audio  Message
134145 -20 2370  EA4Z IQ4JO JN63
140730 -19  989  EA4Z OD5JL -04

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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