LU4MAJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Argentina Most frequent locator attributed to this token: FF57

Receiver-side FT8 activity involving LU4MAJ, decoded by SO8OO in southeastern Poland. 88 FT8 messages attributed to this token as transmitter, on 10m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-01.

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 88 FT8 messages attributed to LU4MAJ as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (100%). Several six-hour UTC windows tied for the largest share (97%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -17 dB.

Overview

88
Messages attributed
11
UTC dates decoded
17
Active 15-min windows
-17 dB
Estimated median S/N

Bands

10m · 88
First attributed message: 2026-06-07
Last attributed message: 2026-08-01 14:57 UTC

Observed FT8 message patterns

Attributed sample
88 messages
Active dates
11 UTC dates
Estimated median S/N
-17 dB
Estimated 10th-90th percentile
-24 to -8 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 51, moderate (-15 to -9 dB) 28, 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 LU4MAJ in decoded directed-looking exchanges:

Most frequent locator attributed to LU4MAJ

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
FF57 · 37 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
12,760 km (approx.)
Last such locator decoded
2026-07-30 21:11 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 UTCBandLU4MAJ S/NCounterpartCounterpart S/NMsgsCapture
08-08 16:22 10m - / -15 R6DWD -12 / - 2 Partial capture
08-08 16:16 10m - / - UA6LTA -15 / - 2 Partial capture
08-08 16:11 10m - / - UA6LTA -14 / - 2 Partial capture
08-07 16:12 10m - / - ON6DSL -22 / - 4 Partial capture
08-07 15:03 10m - / -9 R3RR -16 / - 4 ✓ Closing fragment
08-01 16:07 10m - / -14 IQ3NX -16 / - 2 Partial capture
08-01 15:49 10m - / -11 F8VNU -5 / - 5 Partial capture
08-01 15:36 10m - / -23 IK3COB -10 / - 3 Partial capture
08-01 15:17 10m - / - IU0VOG -20 / - 2 Partial capture
08-01 14:56 10m -24 / - IK4LZH -3 / - 4 ✓ Closing observed
07-29 16:32 10m - / +9 IU5RTR -20 / - 3 ✓ Closing fragment
07-29 16:19 10m - / - ON7DE -13 / - 6 Partial capture
07-29 16:04 10m - / - F5PCV -16 / - 2 Partial capture
07-26 20:15 10m -20 / - N5SGK - / -18 4 Partial capture
07-26 20:12 10m -18 / -3 IK4ISR -2 / +2 7 ✓ Full exchange observed
07-26 20:10 10m -21 / - SP2Y - / - 3 Partial capture
07-25 15:26 10m - / - RM3ZR -13 / - 2 Partial capture
07-25 15:25 10m - / -18 PD0HLA -6 / - 4 Partial capture
07-25 14:59 10m - / - R7HL -14 / - 5 Partial capture
07-25 14:58 10m - / - UX3HX -15 / - 7 Partial capture
07-25 14:57 10m - / 0 UT5ECZ +2 / - 2 ✓ Closing fragment
07-25 14:45 10m - / - R7HL -16 / - 4 Partial capture
07-25 14:44 10m - / - RT6DU -6 / - 4 Partial capture
07-18 20:48 10m - / -13 RC3KR -16 / - 2 Partial capture
07-18 20:46 10m - / - IV3CTT -15 / - 7 Partial capture
07-17 15:45 10m - / - SV2BWY -16 / - 2 Partial capture
06-26 21:10 10m - / - RK6OV -20 / - 8 Partial capture
06-25 15:34 10m - / - DN9OPA -20 / - 2 Partial capture
06-25 15:33 10m - / - ON6AA -22 / - 2 Partial capture
06-25 15:29 10m - / -17 F5LOW -14 / - 9 Partial capture

Recent FT8 messages decoded at SO8OO

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

10m 
UTC    dB Audio  Message
150415 -15 1558  LU4MAJ R3RR RR73 (x2)
161215 -21 1918  LU4MAJ ON6DSL JO21 (x4)
162315 -18 1603  LU4MAJ DK4RH JO31
161145 -15 1646  LU4MAJ UA6LTA KN97 (x4)
162215 -12 1003  LU4MAJ R6DWD -15 (x2)
151345 -14 1628  LU4MAJ DN9WES JO30
145245 -24 1932  LU4MAJ DK5UP JO31
20m 
UTC    dB Audio  Message
213215 -20 1509  LU4MAJ RX3ASQ RR73

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