RA4UEU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: LO14

Receiver-side FT8 activity involving RA4UEU, decoded by SO8OO in southeastern Poland. 87 FT8 messages attributed to this token as transmitter, on 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-07-16 and 2026-08-20.

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 87 FT8 messages attributed to RA4UEU 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 (100%). Most decodes (77%) fell within the six-hour window 10:00-16:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

87
Messages attributed
6
UTC dates decoded
14
Active 15-min windows
-11 dB
Estimated median S/N

Bands

First attributed message: 2026-07-16
Last attributed message: 2026-08-20 10:15 UTC

Observed FT8 message patterns

Attributed sample
87 messages
Active dates
6 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-17 to -5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 47, strong (≥ -8 dB) 27.

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.

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 RA4UEU

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
LO14 · 45 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,524 km (approx.)
Last such locator decoded
2026-08-20 10:12 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 UTCBandRA4UEU S/NCounterpartCounterpart S/NMsgsCapture
08-21 13:33 20m - / - DL6EL +11 / - 3 Partial capture
08-20 10:13 20m -8 / -2 RA8AM -15 / -1 7 ✓ Full exchange observed
08-20 10:11 20m - / -5 RX7T -4 / - 3 Partial capture
08-20 10:06 20m -7 / -5 MI0TXM -24 / -24 2 Partial capture
07-31 04:09 20m -7 / - DH2RL - / -7 2 ✓ Closing fragment
07-26 11:31 20m - / - F5IXN -11 / - 2 Partial capture
07-26 11:11 20m - / -10 RA6OY +6 / - 2 ✓ Closing fragment
07-24 14:36 20m - / -17 A71AT -4 / - 3 ✓ Closing fragment
07-24 14:23 20m - / - LZ2SPD -13 / - 2 Partial capture
07-24 09:56 20m - / - YT1DDL -12 / - 2 Partial capture
07-23 09:55 10m - / - IW3GJF -3 / - 2 Partial capture
07-22 09:17 10m - / -12 IK4LZH +6 / - 3 ✓ Closing fragment
07-22 04:51 20m - / -16 IK4TVP -5 / - 5 Partial capture
07-21 15:16 20m -9 / - BA8BLK - / -14 4 Partial capture
07-21 15:14 20m -12 / -11 TA2ED -14 / - 2 ✓ Closing observed
07-21 15:07 20m -6 / - UA9UFJ - / -8 3 Partial capture
07-21 15:03 20m -11 / - BI4MPH - / - 3 ✓ Closing fragment
07-20 05:00 20m - / -12 DL6UM -6 / - 3 Partial capture
07-20 04:56 20m - / -17 DL6UM -3 / - 4 Partial capture
07-19 10:26 10m - / - RZ5D -6 / - 2 ✓ Closing fragment
07-19 10:15 10m - / -6 R7DX -11 / - 3 Partial capture
07-19 05:03 10m - / +8 R6ML -14 / - 3 ✓ Closing fragment
07-18 10:42 10m - / -14 F1ODM -5 / - 4 ✓ Closing fragment
07-16 14:16 20m -13 / -17 RN6MA -1 / -20 5 ✓ Full exchange observed
07-16 14:14 20m -18 / - BI1HJR - / -10 2 Partial capture
07-16 14:10 20m -12 / - JK1DMX - / -21 2 ✓ Closing fragment
07-16 14:06 20m -13 / - BA8BLK - / -16 3 Partial capture
07-16 13:55 20m -18 / - JR5DFW - / -12 2 ✓ Closing fragment
07-16 13:51 20m -16 / - BD4JN - / -13 2 ✓ Closing fragment
07-16 13:48 20m -14 / - DL6UM - / -16 2 Partial capture
07-16 13:47 20m -13 / - EA1FUB - / -24 2 ✓ Closing fragment
07-16 13:45 20m -14 / - R2FDS - / -19 3 Partial capture
07-15 15:59 20m - / 0 RA9CMO -4 / - 7 ✓ Closing fragment
07-14 09:53 10m - / -12 R6DOB -7 / - 3 Partial capture
07-12 10:36 20m - / - EA3GXK -14 / - 2 Partial capture
07-12 10:21 20m - / - PD1HPB -13 / - 7 Partial capture
07-12 10:21 20m - / -13 PD2WL -13 / - 8 ✓ Closing fragment
07-12 10:21 20m - / - SP1COU -21 / - 3 Partial capture
07-11 10:28 20m - / - PD1HPB -16 / - 2 Partial capture
07-11 10:28 20m - / -14 IZ0AEZ -6 / - 3 ✓ Closing fragment
07-11 10:23 20m - / - DL1R +1 / - 10 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m
UTC    dB Audio  Message
101200  -4 2317  RA4UEU RX7T -03
101215 -12  999  CQ RA4UEU LO14
101230  -3 2317  RA4UEU RX7T -02
101315  -6  998  PA1PXL RA4UEU -18
101330 -14 1480  RA4UEU RA8AM -02 (x2)
101415  -6  998  RA8AM RA4UEU R-01 (x3)
101530 -15 1480  RA4UEU RA8AM RR73
101545 -12  997  RA8AM RA4UEU 73
132830 +11  993  RA4UEU F1ODM +02
133300 +13 2471  RA4UEU DL6EL JN57 (x3)
10m
UTC    dB Audio  Message
104330  -4  995  RA4UEU F1ODM -14 (x2)
050315 -13 1005  RA4UEU R6ML LN17 (x3)
101545  -7 1601  RA4UEU R7DX KN84 (x3)
102645  -7 1166  RA4UEU RZ5D KN75 (x2)
091715  +8  493  RA4UEU IK4LZH JN54 (x3)
095545  -5 2550  RA4UEU IW3GJF JN55 (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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