EA3DU — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Spain Most frequent locator attributed to this token: JN11

Receiver-side FT8 activity involving EA3DU, decoded by SO8OO in southeastern Poland. 20 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-18.

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 20 FT8 messages attributed to EA3DU 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 (40%), followed by 10 m (40%) and 40 m (20%). Several six-hour UTC windows tied for the largest share (85%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-13 dB

Estimated median S/N

Bands

40m · 4 20m · 8 10m · 8

First attributed message: 2026-06-07
Last attributed message: 2026-10-18 18:37 UTC

Observed FT8 message patterns

Attributed sample: 20 messages
Active dates: 6 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -24 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 9.

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 EA3DU in decoded directed-looking exchanges:

EA7HG · Spain F6FHZ · France G0RVY · England HB9ELE · Switzerland OH3OJ · Finland ON5RJ · Belgium

Most frequent locator attributed to EA3DU

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: JN11 · 12 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,727 km (approx.)
Last such locator decoded: 2026-10-18 18:37 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	EA3DU S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-18 18:37	40m	-8 / -	S9R	- / -	2	Partial capture
10-15 17:55	40m	- / -11	OH3OJ	+4 / -	2	✓ Closing fragment
10-14 18:25	40m	- / +2	ON5RJ	+7 / -	2	✓ Closing fragment
10-14 18:23	40m	-13 / -11	G0RVY	0 / -	4	✓ Closing observed
10-12 14:48	10m	- / -1	TN8GD	-12 / -	2	Partial capture
10-12 14:45	10m	- / -5	TN8GD	-14 / -	2	Partial capture
10-12 14:38	10m	- / -8	TN8GD	-12 / -	2	Partial capture
09-29 18:37	40m	- / +9	HB9ELE	+16 / -	2	✓ Closing fragment
09-29 18:32	40m	- / -15	EA7HG	-17 / -	3	✓ Closing fragment
09-29 18:32	40m	- / +2	F6FHZ	-13 / -	7	✓ Closing fragment
08-27 15:31	20m	+1 / -	RI1FJL	- / -17	6	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
183545  -8 1588  EA3DU F6FHZ 73
183745 +15  695  EA3DU HB9ELE +09 (x2)
153045  -3  541  EA3DU 9A5AZK -15
182315  +1  878  EA3DU G0RVY JO01 (x2)
182400 -13 1653  G0RVY EA3DU RR73
182415  -1  878  EA3DU G0RVY 73
182545  +7 1240  EA3DU ON5RJ R+02 (x2)
182815 -16 1617  EA3DU IU8RFW JN70
175515  +4  522  EA3DU OH3OJ -11 (x2)
183715  -7 1549  S9R EA3DU JN11 (x2)

10m

UTC    dB Audio  Message
134400 -19 2094  EA3DU 7Z1DH -09
143800 -10  846  EA3DU TN8GD -08 (x6)

20m

UTC    dB Audio  Message
153145  -5 2675  RI1FJL EA3DU JN11 (x7)

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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