UA3LAR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO75

Receiver-side FT8 activity involving UA3LAR, decoded by SO8OO in southeastern Poland. 394 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 36 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-21.

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 394 FT8 messages attributed to UA3LAR as the transmitting token by decoded message structure across 36 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (55%), followed by 80 m (16%) and 40 m (16%). Most decodes (76%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (67%); the estimated median was -5 dB.

Overview

394
Messages attributed
36
UTC dates decoded
75
Active 15-min windows
-5 dB
Estimated median S/N

Bands

First attributed message: 2026-06-07
Last attributed message: 2026-09-21 16:34 UTC

Observed FT8 message patterns

Attributed sample
394 messages
Active dates
36 UTC dates
Estimated median S/N
-5 dB
Estimated 10th-90th percentile
-14 to +5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 27, moderate (-15 to -9 dB) 102, strong (≥ -8 dB) 265.

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 UA3LAR

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
KO75 · 242 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,081 km (approx.)
Last such locator decoded
2026-09-21 16:32 UTC

Other locator fields attributed to this token: KP74 (22).

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 UTCBandUA3LAR S/NCounterpartCounterpart S/NMsgsCapture
09-21 16:24 160m -12 / - RZ9OL/M - / -10 17 Partial capture
09-21 15:57 160m -13 / - <...> - / - 2 Partial capture
09-19 19:28 160m - / - R3LDK -8 / - 4 Partial capture
09-19 19:27 160m - / - RY3D 0 / - 2 Partial capture
09-19 19:25 160m 0 / - R3RRC/P - / -5 4 ✓ Closing fragment
09-19 17:51 80m - / +1 RY3F -8 / - 3 Partial capture
09-19 17:50 80m -3 / - R3RRC/P - / - 3 ✓ Closing fragment
09-19 15:57 80m - / +2 RA1TR +2 / - 4 Partial capture
09-19 15:56 80m -8 / - R3RRC/P - / - 4 Partial capture
09-19 15:31 40m -6 / - R9HEP/P - / - 2 Partial capture
09-18 19:49 160m -6 / - UB8CQC/P - / - 2 Partial capture
09-17 19:25 160m -1 / - RI1FJZ - / - 17 Partial capture
09-17 19:20 160m -16 / - RI1FJZ - / - 5 Partial capture
09-17 18:53 160m -16 / - RI1FJZ - / - 6 Partial capture
09-16 19:55 160m +5 / - RI1FJZ - / - 2 Partial capture
09-16 19:49 160m -8 / - RI1FJZ - / - 4 Partial capture
09-16 19:40 160m -9 / - RI1FJZ - / -21 11 ✓ Closing fragment
09-16 19:33 160m - / - RW6ADP -4 / - 3 Partial capture
09-16 19:17 160m -5 / - RI1FJZ - / -20 30 ✓ Closing fragment
09-16 19:14 160m -14 / - RI1FJZ - / - 2 Partial capture
09-16 16:20 80m - / -7 R2SN -6 / - 3 Partial capture
09-16 16:14 80m - / -4 R2SN -6 / - 6 Partial capture
09-16 16:12 80m -2 / - OZ/DG4BRT - / - 2 Partial capture
09-14 16:24 80m - / - R6ML -13 / - 2 Partial capture
09-14 16:23 80m - / - UA4FKT -15 / - 4 Partial capture
09-14 16:23 80m 0 / -1 UB6OAJ -20 / +5 4 ✓ Full exchange observed
09-14 16:22 80m +4 / -2 R6ZE -21 / +10 4 ✓ Full exchange observed
09-13 18:59 160m - / - OK1DXR +4 / - 8 Partial capture
09-13 18:58 160m -6 / +1 R9CS/P -10 / -12 4 ✓ Full exchange observed
09-13 18:46 40m - / - 9A4ZM +2 / - 2 Partial capture
09-13 18:45 40m -9 / - RG6S - / +7 3 ✓ Closing fragment
09-13 17:32 160m -7 / - R3ICU - / -3 4 ✓ Closing fragment
09-13 17:25 160m - / - RU3FM +8 / - 2 Partial capture
09-13 17:23 160m +4 / +8 R9CS/P -8 / -7 7 ✓ Full exchange observed
09-13 17:22 160m - / - RW2Z -11 / - 2 Partial capture
09-13 17:21 160m +2 / -10 R6OBN -4 / +2 5 ✓ Full exchange observed
09-13 16:46 40m +10 / - R6SH - / - 4 Partial capture
09-07 16:25 80m - / - UA4FKT +6 / - 3 Partial capture
09-07 16:24 80m -4 / -11 R6ZCE -2 / - 4 ✓ Full exchange observed
09-06 19:04 160m - / - OK1DXR +2 / - 10 Partial capture
09-06 19:04 160m - / - UA4FKT -13 / - 4 Partial capture
09-06 18:55 160m +3 / +5 R9CS/P -6 / +1 16 ✓ Full exchange observed
09-06 18:37 160m 0 / - R9CS/P - / - 10 Partial capture
09-06 18:34 160m 0 / - R9CS/P - / - 2 Partial capture
09-06 18:22 160m -8 / - R9CS/P - / - 2 Partial capture
09-06 17:00 80m - / - RK6MC +11 / - 2 Partial capture
09-06 17:00 80m - / - DO9BAU 0 / - 13 Partial capture
09-06 17:00 80m - / - UA4FKT +10 / - 4 Partial capture
09-06 16:51 80m -7 / - EY8BL -20 / -12 17 ✓ Closing observed
09-05 18:33 40m +4 / - T77NC - / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

160m
UTC    dB Audio  Message
162545 -13 1053  RZ9OL/M UA3LAR KO75 (x15)
80m
UTC    dB Audio  Message
155615  -2 2035  R3RRC/P UA3LAR KO75 (x2)
155700  +0 1968  UA3LAR RA1TR +02
155715 -13 2035  R3RRC/P UA3LAR KO75
155730  +1 1968  UA3LAR RA1TR +02
155745  -8 2035  R3RRC/P UA3LAR KO75
155800  +3 1968  UA3LAR RA1TR +02 (x2)
175015  +1 1775  R3RRC/P UA3LAR KO75 (x3)
175130  -9 1774  UA3LAR RY3F +01
175130  +3 2906  UA3LAR RO3ZR KO80
175200  -9 1774  UA3LAR RY3F +01 (x2)
40m
UTC    dB Audio  Message
183330  +5 1123  T77NC UA3LAR KO75 (x2)
183415  +7  488  UA3LAR OK1DLA JN79
164630 +12  631  R6SH UA3LAR KO75 (x4)
184500  -9 1364  RG6S UA3LAR KO75 (x3)
184615  +2 1360  UA3LAR 9A4ZM JN86 (x2)
132830 -20 2145  UA3LAR R3RRC/P RR73
153130  -6 1757  R9HEP/P UA3LAR KO75 (x2)
20m
UTC    dB Audio  Message
021600 -23 1572  UA3LAR N4YYV -11 (x2)
112945 -10 2590  RI1ZR UA3LAR R-14
113300 -18 1969  UA3LAR YO6LM -01 (x2)
055815 -10  614  NP3RK UA3LAR KO75 (x3)
042815  -9 2585  UA3LAR R6SS RR73
035945  +9  325  UA3LAR RA6OY -02
040145 -15  677  UA3LAR RA6ZD 73
161100  -9  562  BU2FW UA3LAR KO75 (x4)
10m
UTC    dB Audio  Message
044945  -1 1235  UA3LAR UA3ZQN KO90 (x2)
063545  +2  654  UA3LAR R7RDE -06 (x2)
123415 -20 1645  RY6O UA3LAR KO75

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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