EA3IZF — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving EA3IZF, decoded by SO8OO in southeastern Poland. 1,004 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 65 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-20.

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 1,004 FT8 messages attributed to EA3IZF as the transmitting token by decoded message structure across 65 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (80%), followed by 40 m (20%). Most decodes (65%) fell within the six-hour window 04:00-10:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

1,004

Messages attributed

UTC dates decoded

197

Active 15-min windows

-15 dB

Estimated median S/N

Bands

40m · 200 20m · 804

First attributed message: 2026-06-07
Last attributed message: 2026-09-20 04:42 UTC

Observed FT8 message patterns

Attributed sample: 1,004 messages
Active dates: 65 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -22 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 476, moderate (-15 to -9 dB) 281, strong (≥ -8 dB) 247.

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 EA3IZF in decoded directed-looking exchanges:

DH9DR · Fed. Rep. of Germany ×2 OE1SGU · Austria ×2 ON4AOI · Belgium ×2 4X1PB · Israel 4X1YA · Israel 4X6ZK · Israel 4Z5PT · Israel 5B4AMX · Cyprus 5P1KZX · Denmark 9A2L · Croatia 9A3MRN · Croatia 9A9TT · Croatia

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 EA3IZF

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 · 692 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,858 km (approx.)
Last such locator decoded: 2026-09-20 04:42 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	EA3IZF S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 05:13	40m	- / -	DJ0MAB	-5 / -	4	Partial capture
09-21 04:53	40m	- / +3	YO3OBB	-4 / -	2	✓ Closing fragment
09-21 04:51	40m	- / -	DJ0MAB	-6 / -	2	Partial capture
09-20 09:14	40m	- / -13	DD1OO	-11 / -	2	✓ Closing fragment
09-20 04:39	40m	-15 / -	KD0S	- / -	5	Partial capture
09-13 04:41	40m	-20 / -	N4NRE	- / -	2	Partial capture
09-13 04:30	40m	-19 / -9	YO4GIY	-5 / -10	2	Partial capture
09-13 04:29	40m	-16 / -	KD2TDA	- / -	2	Partial capture
09-12 05:06	40m	- / -	OZ3AEV	-4 / -	5	Partial capture
09-12 05:05	40m	- / -	F4BYA	-1 / -	3	Partial capture
09-12 05:02	40m	- / -	DJ0MAB	+4 / -	2	Partial capture
09-12 04:56	40m	- / -	DJ0MAB	+2 / -	5	Partial capture
09-12 04:56	40m	- / -	F4BYA	-3 / -	2	Partial capture
09-12 04:43	40m	- / -	DJ0MAB	+7 / -	2	Partial capture
09-12 04:41	40m	- / -	F4BYA	+6 / -	3	Partial capture
09-12 04:23	40m	-11 / -	4Z5NN	- / -	5	Partial capture
09-11 09:22	40m	- / -	DF5DY	-10 / -	2	Partial capture
09-11 08:50	40m	- / -	F4BYA	-4 / -	5	Partial capture
09-11 08:48	40m	- / -14	S53AK	+2 / -	2	✓ Closing fragment
09-11 06:12	40m	- / -	F4BYA	+4 / -	4	Partial capture
09-11 06:02	40m	- / -	DJ0MAB	-6 / -	5	Partial capture
09-11 03:53	40m	-10 / -	KD3GC	- / -6	10	Partial capture
09-11 03:45	40m	-2 / -	K2AKA	- / -12	2	✓ Closing fragment
09-11 03:43	40m	-6 / -18	R1AI	-16 / -13	4	Partial capture
09-11 03:42	40m	-8 / -17	RX3ASQ	-10 / -13	5	Partial capture
09-11 03:41	40m	-9 / -	WB2BWU	- / -18	3	✓ Closing fragment
09-11 03:38	40m	-12 / -	MM3WYM	- / -	4	Partial capture
09-11 03:25	40m	-8 / -	HK3AB	- / -	12	Partial capture
09-11 03:22	40m	-7 / -	KA3IRT	- / -16	2	✓ Closing fragment
09-11 03:22	40m	-13 / -10	RK4FF	-4 / -12	6	Partial capture
09-11 03:17	40m	-7 / -	YO8RAW	- / -	3	Partial capture
09-11 03:13	40m	-12 / -	HZ1TT	- / -	8	Partial capture
09-11 03:12	40m	-6 / -	YL2KF	- / -12	2	✓ Closing fragment
09-10 11:10	40m	- / -7	9A9TT	-3 / -	7	Partial capture
09-10 04:44	40m	-14 / -	SQ100PKP	- / -	4	Partial capture
09-10 04:41	40m	- / -4	LA1SNA	-12 / -	3	✓ Closing fragment
09-10 04:40	40m	-12 / -	KR4MFX	- / -12	2	✓ Closing fragment
09-09 04:22	40m	-13 / -	Z68PX	- / -	3	Partial capture
09-08 04:10	40m	-18 / -	NJ2RQ	- / -20	2	Partial capture
09-08 04:06	40m	-16 / -	KA4JRY	- / -	2	Partial capture
09-08 04:04	40m	-16 / -	Z68BR	- / -	2	Partial capture
09-07 04:40	40m	-17 / -15	UX2QX	+3 / -24	3	✓ Full exchange observed
09-06 07:05	40m	- / -4	DK0LI/P	-4 / -	2	✓ Closing fragment
09-06 03:30	40m	-7 / -	UB6LWY/P	- / -	3	Partial capture
09-06 03:21	40m	-12 / -	YN1ZGN	- / -23	11	Partial capture
08-31 05:28	40m	-18 / -	MW7TTA	- / -	2	Partial capture
08-31 04:42	40m	- / -	DL6UCK	-13 / -	4	Partial capture
08-31 04:33	40m	- / -16	NC3S	-20 / -	2	Partial capture
08-30 09:27	20m	-10 / 0	E71AT	-13 / -	2	Partial capture
08-30 05:35	20m	-6 / -	UA4FEN	- / -	11	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
044015 -15 1541  KD0S EA3IZF JN01 (x4)
091430 -12 1384  EA3IZF DD1OO -13 (x2)
045115  -6 1540  EA3IZF DJ0MAB JN49 (x2)
045345  -3 1152  EA3IZF YO3OBB +03 (x2)
045615 -17  668  EA3IZF ZL2CA -15
051315  -8 1540  EA3IZF DJ0MAB JN49 (x4)

20m

UTC    dB Audio  Message
053300 -16 1580  UR5NQV EA3IZF R-10 (x2)
053530  -6 1579  UA4FEN EA3IZF JN01 (x11)
092745 -13 1008  EA3IZF E71AT +00
092830 -10 1578  E71AT EA3IZF 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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