UA8J — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Asiatic Russia Most frequent locator attributed to this token: MP80

Receiver-side FT8 activity involving UA8J, decoded by SO8OO in southeastern Poland. 19 FT8 messages attributed to this token as transmitter, on 160m, across 3 UTC dates in the available aggregate history. Observed between 2026-09-05 and 2026-09-12.

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 19 FT8 messages attributed to UA8J as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (100%). In this small sample, the estimated median decoder S/N was -11 dB; no usual signal pattern is inferred.

Overview

19
Messages attributed
3
UTC dates decoded
9
Active 15-min windows
-11 dB
Estimated median S/N

Bands

160m · 19
First attributed message: 2026-09-05
Last attributed message: 2026-09-12 17:49 UTC

Observed FT8 message patterns

Attributed sample
19 messages
Active dates
3 UTC dates
Estimated median S/N
-11 dB
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 16, strong (≥ -8 dB) 2.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with UA8J 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 UA8J

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
MP80 · 7 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
3,571 km (approx.)
Last such locator decoded
2026-09-11 19:34 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 UTCBandUA8J S/NCounterpartCounterpart S/NMsgsCapture
09-12 17:49 160m -13 / -13 RD6OX -4 / -6 3 ✓ Full exchange observed
09-12 17:42 160m - / -6 OH5KNL -17 / - 3 ✓ Closing fragment
09-12 17:37 160m -14 / -8 R3GO +2 / - 3 ✓ Closing observed
09-12 17:34 160m - / -14 UA6ASQ 0 / - 2 ✓ Closing fragment
09-12 17:25 160m - / -9 EU1KY +11 / - 3 ✓ Closing fragment
09-12 17:21 160m - / +2 RD9D -16 / - 3 ✓ Closing fragment
09-12 17:11 160m - / -18 RU3DBT -21 / - 3 ✓ Closing fragment
09-12 16:43 160m - / -22 RU6C +5 / - 3 ✓ Closing fragment
09-11 19:33 160m - / - SQ8SBP +22 / - 2 Partial capture
09-11 19:31 160m - / -15 OM2WQ +10 / - 2 ✓ Closing fragment
09-11 19:30 160m - / -8 RK4FD -8 / - 2 ✓ Closing fragment
09-11 19:09 160m - / -24 R6FX 0 / - 4 Partial capture
09-11 19:08 160m - / -13 R2DGN -2 / - 3 ✓ Closing fragment
09-11 18:01 160m -12 / -13 R2SDZ +1 / - 5 ✓ Full exchange observed
09-11 18:00 160m -11 / - R2HB -8 / -13 6 Partial capture
09-11 17:58 160m - / - YO2NAA -4 / - 5 Partial capture
09-11 17:58 160m -12 / -14 HA5OLA +12 / - 7 ✓ Closing observed
09-11 17:39 160m -9 / -20 RD4A -9 / - 4 ✓ Closing observed
09-11 17:38 160m - / -26 RT2P -8 / - 3 ✓ Closing fragment
09-11 17:37 160m - / -3 RK3QA +1 / - 3 ✓ Closing fragment
09-11 17:34 160m - / -14 RK1N -14 / - 4 ✓ Closing fragment
09-11 17:31 160m - / -7 RU3FM -7 / - 4 ✓ Closing fragment
09-05 18:16 160m - / - LA9GX -14 / - 4 Partial capture
09-05 18:15 160m -10 / - EW6FL - / - 2 Partial capture
09-05 18:01 160m - / -15 OK1TP -4 / - 2 ✓ Closing fragment
09-05 17:43 160m - / -15 RC2DD -16 / - 2 ✓ Closing fragment
09-05 17:35 160m - / -10 UA3SCF -3 / - 3 ✓ Closing fragment
09-05 17:33 160m - / -7 RZ6BS +2 / - 5 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m 
UTC    dB Audio  Message
172200 -20  925  UA8J RD9D 73
172500 +11 1421  UA8J EU1KY KO33 (x3)
173445  +2 2000  UA8J UA6ASQ -14 (x2)
173745  +0 2096  UA8J R3GO -08 (x2)
173830 -14  597  R3GO UA8J 73
174245 -20 1827  UA8J OH5KNL -06 (x3)
174915  -5 1290  UA8J RD6OX -13
174930 -13  597  RD6OX UA8J R-06
174945  -4 1289  UA8J RD6OX 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.

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