EA5IZJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Spain Most frequent locator attributed to this token: IM98

Receiver-side FT8 activity involving EA5IZJ, decoded by SO8OO in southeastern Poland. 31 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-16 and 2026-09-15.

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 31 FT8 messages attributed to EA5IZJ as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (58%), followed by 40 m (39%) and 10 m (3%). Most decodes (97%) fell within the six-hour window 14:00-20:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -5 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-5 dB

Estimated median S/N

Bands

40m · 12 20m · 18 10m · 1

First attributed message: 2026-06-16
Last attributed message: 2026-09-15 19:42 UTC

Observed FT8 message patterns

Attributed sample: 31 messages
Active dates: 6 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -18 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 17.

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 EA5IZJ in decoded directed-looking exchanges:

PE1MHY · Netherlands EA5JHE · Spain IU5HIU · Italy IZ1HJU · Italy MI0JZZ · Northern Ireland PD1HBL · Netherlands PD9FLX · Netherlands G0UDE · 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 EA5IZJ

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: IM98 · 18 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,203 km (approx.)
Last such locator decoded: 2026-09-15 19:42 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	EA5IZJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-15 19:39	40m	-8 / -	BG0HP	- / -	3	Partial capture
08-25 19:58	20m	- / -	MI7RDK	-8 / -	2	Partial capture
08-25 19:57	20m	- / -	RZ3Z/P	-5 / -	2	Partial capture
08-25 19:48	20m	0 / -4	PD1HBL	-4 / -	5	✓ Closing observed
08-25 19:46	20m	-2 / -8	MI0JZZ	-6 / -19	4	✓ Full exchange observed
08-25 19:44	20m	-2 / -10	EA5JHE	-3 / -12	4	✓ Full exchange observed
08-25 19:43	20m	-2 / -5	IU5HIU	+1 / -10	5	✓ Full exchange observed
08-25 19:40	20m	+3 / 0	IZ1HJU	+3 / -12	4	✓ Full exchange observed
08-25 19:40	20m	- / -7	PE1MHY	+17 / -	2	Partial capture
08-16 12:19	20m	- / -5	OE8RPK	-22 / -	2	Partial capture
08-15 12:32	20m	-20 / +1	PD9FLX	-20 / -	3	✓ Closing observed
07-07 19:31	10m	- / -15	DN9AD	-9 / -	3	Partial capture
07-07 19:31	10m	-24 / -	PE1MHY	-24 / -	2	✓ Closing observed
07-07 19:29	10m	- / -	DO5WG	-18 / -	2	Partial capture
07-07 19:28	10m	- / +4	PE1MHY	-23 / -	3	Partial capture
07-07 19:25	10m	- / -	DN9AD	+5 / -	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
194045 -21 1482  EA5IZJ G0UDE RR73
171100 -17 1764  EA5IZJ EG1PDA -02
193530  -4 1727  CQ EA5IZJ IM98
193700 -13 1727  ON1JP EA5IZJ R-14
193845 -16 1581  EA5IZJ OS4K +05
193930  -4 1727  BG0HP EA5IZJ IM98 (x3)
194245  -5 1727  TN8GD EA5IZJ IM98

20m

UTC    dB Audio  Message
194615  -3 1766  MI0JZZ EA5IZJ R-19
194630  -8 2582  EA5IZJ MI0JZZ RR73
194645  -1 1767  MI0JZZ EA5IZJ 73
194715  +2 1766  CQ EA5IZJ IM98 (x2)
194800  -6 1767  EA5IZJ PD1HBL JO21
194815  -1 1766  CQ EA5IZJ IM98
194830  -5 1767  EA5IZJ PD1HBL JO21 (x2)
194915  +0 1766  PD1HBL EA5IZJ RR73
194930  -2 1767  EA5IZJ PD1HBL 73
195730  -7 1767  EA5IZJ RZ3Z/P KN84 (x2)
195800  -7  388  EA5IZJ MI7RDK IO74 (x2)

10m

UTC    dB Audio  Message
192545  +3 2514  EA5IZJ DN9AD JO52 (x3)
192815 -23 1329  EA5IZJ PE1MHY +04 (x3)
192915 -13 2551  EA5IZJ DO5WG JO40 (x2)
193130 -24 1787  PE1MHY EA5IZJ IM98
193145 -11  986  EA5IZJ DN9AD JO52
193215 -24 1329  EA5IZJ PE1MHY RR73
193215  -4  986  EA5IZJ DN9AD JO52 (x2)

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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee