EA5SW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Spain Most frequent locator attributed to this token: IM99

Receiver-side FT8 activity involving EA5SW, decoded by SO8OO in southeastern Poland. 91 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-09-12 and 2026-09-16.

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 91 FT8 messages attributed to EA5SW as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (90%), followed by 80 m (10%). Several six-hour UTC windows tied for the largest share (91%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

91
Messages attributed
3
UTC dates decoded
10
Active 15-min windows
-8 dB
Estimated median S/N

Bands

80m · 9 40m · 82
First attributed message: 2026-09-12
Last attributed message: 2026-09-16 04:45 UTC

Observed FT8 message patterns

Attributed sample
91 messages
Active dates
3 UTC dates
Estimated median S/N
-8 dB
Estimated 10th-90th percentile
-16 to +6 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 27, strong (≥ -8 dB) 51.

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 EA5SW 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 EA5SW

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
IM99 · 57 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
2,129 km (approx.)
Last such locator decoded
2026-09-16 04:44 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 UTCBandEA5SW S/NCounterpartCounterpart S/NMsgsCapture
09-16 04:48 80m - / -7 F1PBZ -1 / - 3 ✓ Closing fragment
09-16 04:47 80m - / -5 DO1ID +9 / - 2 Partial capture
09-16 04:44 80m -12 / - EA3IJQ - / -17 2 ✓ Closing fragment
09-16 04:44 80m - / - DL1UDO -11 / - 2 Partial capture
09-16 04:40 80m -14 / - VE3DZ - / -19 6 ✓ Closing fragment
09-16 04:38 80m - / - E75FM +4 / - 4 Partial capture
09-16 04:38 80m - / - ON4MAP -15 / - 4 Partial capture
09-16 04:27 40m -2 / - NR6HEM - / -14 2 Partial capture
09-16 04:17 40m -1 / - RI1FJZ - / - 15 Partial capture
09-16 04:13 40m +4 / - KA4DQJ - / -18 2 Partial capture
09-16 04:13 40m +2 / - TA2EE - / -16 3 ✓ Closing fragment
09-16 04:10 40m +4 / - RI1FJZ - / - 5 Partial capture
09-16 04:09 40m - / - US3EW -2 / - 2 Partial capture
09-16 04:06 40m +11 / -8 RX3ASQ -19 / -14 6 ✓ Full exchange observed
09-16 04:02 40m +9 / - RX3PX -4 / 0 4 Partial capture
09-16 04:00 40m +3 / - RI1FJZ - / - 5 Partial capture
09-16 03:57 40m 0 / - OA4ENG - / -15 4 ✓ Closing fragment
09-16 03:55 40m -9 / - W6C - / - 2 Partial capture
09-14 06:47 40m -16 / - IQ7AAV/P - / -17 3 Partial capture
09-14 05:52 40m -15 / - IQ7AAV/P - / - 7 Partial capture
09-14 05:44 40m -8 / - W6C - / - 6 Partial capture
09-14 05:36 40m -10 / - UF6V/UA5D - / - 2 Partial capture
09-14 05:32 40m -15 / - VP5/K5UR - / - 5 Partial capture
09-14 05:28 40m -8 / - WA2HIP - / -8 2 ✓ Closing fragment
09-12 22:52 40m -9 / - OA4ENG - / -19 5 ✓ Closing fragment
09-12 22:50 40m -10 / - TN8GD - / - 3 Partial capture
09-01 19:45 60m - / -11 GM0DEQ -10 / - 2 ✓ Closing fragment
09-01 19:35 60m - / -12 E74K +10 / - 2 ✓ Closing fragment
09-01 19:30 60m - / -18 SV9GPV +9 / - 2 ✓ Closing fragment
09-01 19:00 60m - / -11 ER3UA 0 / - 2 ✓ Closing fragment
08-10 10:39 20m - / -11 EB3JT -4 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
044100 -15  983  VE3DZ EA5SW -20 (x4)
044400 -19  983  CQ EA5SW IM99                         a1
044415  -8 1451  EA5SW DL1UDO JO31
044430 -13  983  EA3IJQ EA5SW -17 (x2)
044545 -14 1451  EA5SW DL1UDO JO31
044745  +8  382  EA5SW DO1ID -05
044815  -3  606  EA5SW F1PBZ -07
044815 +10  382  EA5SW DO1ID -05
044915  +2  606  EA5SW F1PBZ RR73 (x2)
045215  +8  382  EA5SW DO1ID -13
40m 
UTC    dB Audio  Message
041815  +6  802  RI1FJZ EA5SW IM99 (x13)
042715  +4  802  NR6HEM EA5SW -14 (x2)
60m 
UTC    dB Audio  Message
190030  +1 2135  EA5SW ER3UA -11 (x2)
193030 +10 2284  EA5SW SV9GPV -18 (x2)
193500 +10 1130  EA5SW E74K -12 (x2)
194545 -10  711  EA5SW GM0DEQ -11 (x2)
20m 
UTC    dB Audio  Message
103900  -3 2937  EA5SW EB3JT R-11 (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.

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