RA3LJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO64

Receiver-side FT8 activity involving RA3LJ, decoded by SO8OO in southeastern Poland. 318 FT8 messages attributed to this token as transmitter, on 80m, 40m, 10m, across 37 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-09-08.

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 318 FT8 messages attributed to RA3LJ as the transmitting token by decoded message structure across 37 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (60%), followed by 10 m (27%) and 80 m (13%). Most decodes (51%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

318
Messages attributed
37
UTC dates decoded
118
Active 15-min windows
-11 dB
Estimated median S/N

Bands

80m · 41 40m · 192 10m · 85
First attributed message: 2026-06-09
Last attributed message: 2026-09-08 15:18 UTC

Observed FT8 message patterns

Attributed sample
318 messages
Active dates
37 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-22 to 0 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 103, moderate (-15 to -9 dB) 95, strong (≥ -8 dB) 120.

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 RA3LJ 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 RA3LJ

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
KO64 · 33 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
915 km (approx.)
Last such locator decoded
2026-09-08 15:17 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 UTCBandRA3LJ S/NCounterpartCounterpart S/NMsgsCapture
09-08 15:18 40m -3 / - UA4FET - / -8 2 ✓ Closing fragment
09-08 15:14 40m -7 / -3 R1943OD -9 / -14 2 Partial capture
09-07 16:13 40m -9 / - RW4HB -2 / -11 3 ✓ Closing observed
09-07 15:58 40m -5 / +4 RV3TV -2 / - 3 ✓ Closing observed
09-07 15:56 40m - / -9 RU3X -3 / - 3 ✓ Closing fragment
09-07 15:26 40m -4 / - R1TET - / -8 2 Partial capture
09-07 15:16 40m -10 / -9 R4PFY -17 / - 3 ✓ Closing observed
09-07 15:03 40m - / - DF5KX -8 / - 2 Partial capture
09-07 15:02 40m -8 / +2 RA3WY -7 / -5 5 ✓ Full exchange observed
09-07 14:32 40m - / -8 UB3ZKO -17 / - 2 ✓ Closing fragment
09-07 14:30 40m -8 / - R3ZCE - / -14 2 Partial capture
09-07 14:27 40m -8 / -5 UX7QV -9 / -10 4 ✓ Full exchange observed
09-07 14:23 40m -11 / +10 R1943OD -9 / -4 3 Partial capture
09-03 13:06 40m -10 / - UK8OM - / -16 2 Partial capture
09-03 13:04 40m - / -7 UA3WDO -16 / - 2 ✓ Closing fragment
09-03 12:52 40m -14 / - UB4CKD - / -11 3 ✓ Closing fragment
09-03 08:26 40m -17 / -10 EW6BJ -14 / - 3 ✓ Closing observed
09-03 08:20 40m -17 / -1 EW6TW -20 / - 3 ✓ Closing observed
09-03 08:16 40m -16 / - UT4PA +5 / -1 2 ✓ Closing observed
09-03 06:29 40m -12 / - RV3TR - / -13 2 ✓ Closing fragment
09-03 06:25 40m -16 / -13 OV6ZM -15 / -8 3 ✓ Full exchange observed
09-03 06:08 40m -8 / - R4UAS - / -2 2 ✓ Closing fragment
09-02 16:18 40m -3 / -15 RV3YN -7 / -16 10 ✓ Full exchange observed
09-02 16:17 40m - / - DK8HC -9 / - 4 Partial capture
09-02 16:17 40m -6 / - R4FCK -16 / - 2 ✓ Closing observed
09-02 16:13 40m -3 / -1 SP9EVL -12 / -15 4 ✓ Full exchange observed
09-02 16:11 40m - / -7 UB3YCK 0 / - 3 ✓ Closing fragment
09-02 16:09 40m - / - YL2JZ -9 / - 2 ✓ Closing fragment
09-02 16:04 40m -3 / - R7IW - / -20 3 ✓ Closing fragment
09-02 16:02 40m -3 / - R4CCE - / -9 3 ✓ Closing fragment
09-02 15:29 40m - / +2 UI5D -8 / - 2 ✓ Closing fragment
09-02 15:24 40m -2 / - RA3ZOM - / -6 2 Partial capture
09-02 15:19 40m 0 / - RA3ZOM - / +1 2 Partial capture
09-02 15:16 40m -8 / - R5ACQ -15 / -16 3 ✓ Closing observed
09-02 15:15 40m -8 / - UB3YCK - / 0 3 Partial capture
09-02 15:09 40m 0 / - RA3ZOM - / +4 2 Partial capture
09-02 14:59 40m - / - YE4FNN -15 / - 2 Partial capture
09-02 14:57 40m 0 / - UI6O -5 / -10 3 ✓ Closing observed
09-02 14:46 40m -9 / - R1LH - / -1 2 ✓ Closing fragment
09-02 14:39 40m -2 / -2 RA3ALC -2 / +3 4 ✓ Closing observed
08-27 17:45 40m -8 / - RA3TRR -13 / - 2 ✓ Closing observed
08-27 17:40 40m -8 / +1 RT2P +1 / -14 6 ✓ Full exchange observed
08-27 17:39 40m -10 / - R1ZH - / -18 2 ✓ Closing fragment
08-27 17:38 40m - / - RV9UNK -9 / - 3 Partial capture
08-10 16:37 40m -18 / - R4PFY - / -20 2 Partial capture
08-10 16:33 40m -18 / - R1TET - / -13 2 ✓ Closing fragment
08-10 08:38 10m - / - DL8CN -9 / - 3 Partial capture
08-10 07:26 10m - / -1 UA6NT -8 / - 2 ✓ Closing fragment
08-09 10:26 40m - / - US8KA -18 / - 2 ✓ Closing fragment
08-09 10:07 10m - / -16 RN6MA -20 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
155815  -3 1127  RA3LJ RV3TV R+04
155830  -5 1126  RV3TV RA3LJ RR73
155845  -1 1127  RA3LJ RV3TV 73
161345  -2  613  RA3LJ RW4HB LO53
161400  -8  613  RW4HB RA3LJ -11 (x2)
161445 -20 1808  RA3LJ RM9WU LO74 (x2)
151100  -3  939  XE5PNK RA3LJ -24
151400  -7 1683  R1943OD RA3LJ -14
151415  -9 1684  RA3LJ R1943OD R-03
151700  -1 1066  CQ RA3LJ KO64 (x2)
151800  -2 1990  UA4FET RA3LJ -08 (x2)
10m 
UTC    dB Audio  Message
074330 -17 1463  RA3LJ RL1B RR73
170230 -22 1489  KB2PIW RA3LJ -05 (x2)
171300 -19 1856  RA3LJ R6FMK 73
171345 -15 1190  UA3ZQN RA3LJ -07
171430  -1 1190  RA3LJ UA3ZQN R-18
082100 -24 1893  RA3LJ LZ2CP R-03
100730 -21 1872  RA3LJ RN6MA R-16 (x2)
072330 -14 2092  RA3LJ RT6Z 73
072600  -9 2250  RA3LJ UA6NT R-01 (x2)
083815  -7  298  RA3LJ DL8CN JO31 (x3)
80m 
UTC    dB Audio  Message
203230 -13 1881  R3TIT RA3LJ RR73
203245  +3 1881  RA3LJ R3TIT 73
203245  +2 2432  RA3LJ RA3TVW R-03
203300  +0 2432  RA3TVW RA3LJ R-09
203700  +7 1183  RA3LJ R7CD R-09 (x2)
203900  +3 2286  IK0HBN RA3LJ RR73
203915  +1 2287  RA3LJ IK0HBN 73
204300  +2 1430  RA3LJ UI5A KO85 (x3)
042930  -3 1543  RA3LJ SN4WWA R-03
042945 -20 1543  SN4WWA RA3LJ -22
043030  -6 1543  RA3LJ SN4WWA RR73
161145 -19 1308  LY3BRA RA3LJ -17

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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