EA5UI — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving EA5UI, decoded by SO8OO in southeastern Poland. 45 FT8 messages attributed to this token as transmitter, on 80m, 40m, 10m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-09 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 45 FT8 messages attributed to EA5UI as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (80%), followed by 80 m (16%) and 40 m (4%). Several six-hour UTC windows tied for the largest share (53%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (91%); the estimated median was -22 dB.

Overview

45
Messages attributed
8
UTC dates decoded
13
Active 15-min windows
-22 dB
Estimated median S/N

Bands

80m · 7 40m · 2 10m · 36
First attributed message: 2026-06-09
Last attributed message: 2026-09-20 00:22 UTC

Observed FT8 message patterns

Attributed sample
45 messages
Active dates
8 UTC dates
Estimated median S/N
-22 dB
Estimated 10th-90th percentile
-24 to -16 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 41, moderate (-15 to -9 dB) 2, strong (≥ -8 dB) 2.

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 EA5UI in decoded directed-looking exchanges:

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 EA5UI

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 · 31 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
2,203 km (approx.)
Last such locator decoded
2026-08-09 19:10 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 UTCBandEA5UI S/NCounterpartCounterpart S/NMsgsCapture
09-20 00:29 40m - / - R4HLO -15 / - 5 Partial capture
09-20 00:21 40m -5 / - IZ8PPI - / -6 2 ✓ Closing fragment
08-09 19:08 80m -21 / - UA4FKT +4 / -12 3 Partial capture
08-09 19:04 80m - / -16 DO3OLI -6 / - 5 Partial capture
08-02 17:19 10m - / 0 9K2YM -1 / - 2 ✓ Closing fragment
07-31 09:40 10m - / -13 IU5NRS -6 / - 2 ✓ Closing fragment
07-27 08:53 10m - / -7 DG4YT -7 / - 3 ✓ Closing fragment
07-27 08:36 10m - / -12 M8FQT -20 / - 2 ✓ Closing fragment
07-26 15:58 10m - / -19 DG9FEH -6 / - 2 Partial capture
07-25 17:23 10m - / - DN9MNE -20 / - 2 ✓ Closing fragment
07-25 09:11 10m - / - DK3HV -22 / - 2 Partial capture
07-24 10:41 10m - / - OZ2CDJ -16 / - 2 Partial capture
07-22 17:21 10m - / -1 DF2JK -22 / - 3 ✓ Closing fragment
07-21 20:41 10m - / 0 CT7AIU -22 / - 2 ✓ Closing fragment
07-20 18:04 10m - / - R7OV -22 / - 4 Partial capture
07-20 15:57 10m - / -14 RU3GF -24 / - 2 ✓ Closing fragment
07-19 19:47 80m - / -18 UT5ZC -2 / - 2 Partial capture
07-19 19:34 80m -23 / - IZ8KVW -16 / -19 3 ✓ Closing observed
07-19 19:32 80m -17 / - EA2EED - / -14 2 Partial capture
07-19 18:13 40m - / - IQ4JO -6 / - 2 Partial capture
07-19 16:11 40m - / -9 DD7EE -19 / - 2 Partial capture
07-19 09:26 10m - / -4 F4FED -20 / - 2 ✓ Closing fragment
07-19 09:18 10m - / - R7OV -14 / - 3 Partial capture
07-18 16:21 10m - / -14 RK3AW -24 / - 2 Partial capture
07-18 16:04 10m - / -9 IK1MJK/P -6 / - 2 ✓ Closing fragment
07-18 15:50 10m - / - EA3DKP -17 / - 2 Partial capture
07-18 08:59 10m - / -6 IK4LZH +14 / - 2 Partial capture
07-17 16:37 10m - / +10 SV7BAY -8 / - 2 ✓ Closing fragment
07-15 09:47 10m - / -21 RU3FA -15 / - 3 ✓ Closing fragment
07-13 08:36 10m - / +1 IW8PQ -19 / - 3 ✓ Closing fragment
07-09 11:46 10m - / -12 DL8NW -13 / - 2 Partial capture
07-07 17:22 10m - / -20 RN3DN -4 / - 3 Partial capture
07-07 16:34 10m - / - DL1WKA -7 / - 2 ✓ Closing fragment
07-07 15:57 10m - / -6 DB1SN -3 / - 3 ✓ Closing fragment
07-07 10:28 10m - / - IU4OKS -21 / - 3 ✓ Closing fragment
07-06 16:11 10m - / -16 PA1AK -14 / - 2 ✓ Closing fragment
07-06 09:37 10m - / - DH3KR -17 / - 4 Partial capture
07-06 09:11 10m - / -21 DL3MN -4 / - 3 ✓ Closing fragment
07-06 09:07 10m - / -15 F4PCM -9 / - 3 ✓ Closing fragment
07-05 18:41 10m - / - DO1JMA -20 / - 2 ✓ Closing fragment
07-03 18:22 10m - / +8 ON7DMQ -5 / - 2 ✓ Closing fragment
07-03 18:13 10m - / -6 PD0PWH -15 / - 3 ✓ Closing fragment
07-02 18:37 10m - / -14 IZ7UIU -24 / - 2 ✓ Closing fragment
06-30 17:02 10m - / -10 DL3BH -15 / - 3 Partial capture
06-30 16:21 10m - / -7 TM2WWA -4 / - 2 ✓ Closing fragment
06-30 16:04 10m - / -16 TM2WWA +11 / - 5 Partial capture
06-30 16:02 10m - / -14 IK4LZH -10 / - 2 ✓ Closing fragment
06-28 19:58 10m - / -20 IQ3UCY -4 / - 2 ✓ Closing fragment
06-28 19:48 10m -23 / - FM4LV - / -17 2 Partial capture
06-28 19:37 10m -22 / - PP5OB - / - 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
183415 -17 1613  EA5UI UA4AOC -17
161145 -19 1177  EA5UI DD7EE -09 (x2)
181330 -16 1639  EA5UI SQ9PBV JN99
181330  -7 2680  EA5UI IQ4JO JN63
181430 -22 1533  EA5UI IU5VLR 73
181445  -5 2680  EA5UI IQ4JO JN63
181830 -15 1383  EA5UI I3VFJ -11
002145  -4 1541  IZ8PPI EA5UI R-06 (x2)
002930 -20 1541  EA5UI R4HLO LO43 (x5)
10m 
UTC    dB Audio  Message
155815  -7  570  EA5UI DG9FEH JO40 (x2)
184930 -13 1178  EA5UI HB10GBT +16
083600 -18 1507  EA5UI M8FQT R-12 (x2)
085330 -10  930  EA5UI DG4YT JO31 (x3)
094045  -6 1418  EA5UI IU5NRS R-13 (x2)
171900  +1 1075  EA5UI 9K2YM +00 (x2)
170730 -16 1591  EA5UI A71DA RR73
112915 -17 2321  EA5UI F4AYI JN08
164430 -17 1225  EA5UI PP1AY 73
80m 
UTC    dB Audio  Message
193430 -16 1447  EA5UI IZ8KVW RR73
193445 -24 1639  IZ8KVW EA5UI 73
193545 -22 1639  IQ0AK EA5UI IM98
194715  -2 1550  EA5UI UT5ZC -18 (x2)
190415 -17 1401  EA5UI DO3OLI JN48
190515 -16 2542  EA5UI G4YKQ 73
190545  -7 1401  EA5UI DO3OLI R-16 (x4)
190815  +5 1402  EA5UI UA4FKT LO23 (x2)
190930 -21 1401  UA4FKT EA5UI -12
191030 -16 1401  CQ EA5UI IM98

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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