UA3DUJ — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO94

Receiver-side FT8 activity involving UA3DUJ, decoded by SO8OO in southeastern Poland. 197 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 16 UTC dates in the available aggregate history. Observed between 2026-09-02 and 2026-10-09.

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 197 FT8 messages attributed to UA3DUJ as the transmitting token by decoded message structure across 16 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (71%), followed by 40 m (29%). Several six-hour UTC windows tied for the largest share (93%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

197
Messages attributed
16
UTC dates decoded
43
Active 15-min windows
-14 dB
Estimated median S/N

Bands

80m · 140 40m · 57
First attributed message: 2026-09-02
Last attributed message: 2026-10-09 17:32 UTC

Observed FT8 message patterns

Attributed sample
197 messages
Active dates
16 UTC dates
Estimated median S/N
-14 dB
Estimated 10th-90th percentile
-23 to -6 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 86, moderate (-15 to -9 dB) 80, strong (≥ -8 dB) 31.

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 UA3DUJ 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 UA3DUJ

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
KO94 · 88 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,273 km (approx.)
Last such locator decoded
2026-10-09 17:32 UTC

Other locator fields attributed to this token: LO02 (9).

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 UTCBandUA3DUJ S/NCounterpartCounterpart S/NMsgsCapture
10-10 17:30 40m - / -12 SV2AEL +4 / - 4 ✓ Closing fragment
10-10 17:30 40m - / 0 DK7ZT -3 / - 4 Partial capture
10-10 17:30 40m - / - IU2THY +15 / - 3 Partial capture
10-10 16:47 80m - / -15 OK8AW +15 / - 3 ✓ Closing fragment
10-10 16:46 80m - / -10 RX7KIR -6 / - 2 ✓ Closing fragment
10-10 16:43 80m - / - RK4UZ -14 / - 2 Partial capture
10-10 16:43 80m - / -7 RM5F +3 / - 3 ✓ Closing fragment
10-09 17:31 80m -14 / - 4Z5AV - / - 2 Partial capture
10-09 17:28 80m -8 / -10 R2EC +13 / -1 6 ✓ Full exchange observed
10-09 17:26 80m -13 / -10 R3RB -4 / +2 5 ✓ Full exchange observed
10-09 17:25 80m -12 / - RW9QA - / - 2 Partial capture
10-09 17:16 80m - / - RX3DTN -8 / - 2 Partial capture
10-09 17:14 80m -12 / - R9AL -19 / -12 3 ✓ Closing observed
10-09 17:12 80m -11 / - UA9FKM - / -22 2 ✓ Closing fragment
10-09 17:11 80m -10 / - RC6OU +5 / -1 2 Partial capture
10-09 17:09 80m -14 / -5 R2HB -2 / - 5 ✓ Closing observed
10-09 17:07 80m -17 / - E70SZ +13 / -16 8 Partial capture
10-08 17:28 80m - / -14 RK4F -5 / - 2 ✓ Closing fragment
10-08 17:25 80m - / -13 R3LDK -3 / - 3 ✓ Closing fragment
10-08 17:23 80m - / - ES3BH -7 / - 3 ✓ Closing fragment
10-08 17:16 80m - / -24 RK4UZ -6 / - 2 Partial capture
10-08 17:13 80m -22 / - RQ3D -18 / -8 3 Partial capture
10-07 18:03 80m -12 / - OH9FTW - / -20 3 ✓ Closing fragment
10-07 17:34 80m -17 / -3 ES2AJ +4 / - 3 ✓ Closing observed
10-07 17:30 80m -8 / -4 RA5AK -7 / - 3 ✓ Closing observed
09-26 18:28 80m - / - R2EC +6 / - 2 Partial capture
09-26 18:25 80m -24 / - UA3PTY - / -12 2 ✓ Closing fragment
09-26 18:20 80m -20 / - M1AQR - / - 2 Partial capture
09-26 18:15 80m - / -12 UA3SCU -4 / - 2 ✓ Closing fragment
09-26 18:13 80m -22 / -14 RA3TVW -10 / -1 7 Partial capture
09-26 18:07 80m - / -17 RA3TVW -8 / - 2 Partial capture
09-26 18:03 80m - / -12 UA4FKT -4 / - 3 ✓ Closing fragment
09-25 04:16 40m - / -12 RT6DU -11 / - 2 Partial capture
09-25 04:09 40m - / - UA4FKT -6 / - 2 Partial capture
09-24 17:49 80m -20 / 0 RA3DAD +3 / - 4 ✓ Closing observed
09-24 17:44 80m -16 / -10 R3UAF -2 / +1 4 ✓ Full exchange observed
09-24 17:41 80m - / - R2SN 0 / - 2 ✓ Closing fragment
09-24 17:40 80m -16 / - UA4FKT +7 / -3 5 Partial capture
09-24 17:39 80m -12 / -8 EU1FQ +5 / 0 5 ✓ Full exchange observed
09-24 17:33 80m - / - UA4FKT +8 / - 2 Partial capture
09-24 17:33 80m - / -11 OK8DCC +8 / - 4 Partial capture
09-23 16:23 80m -10 / -6 UB4CLH -17 / -16 7 ✓ Full exchange observed
09-23 16:22 80m -10 / -12 UN7AB -3 / -7 7 ✓ Full exchange observed
09-23 16:18 80m - / -18 R7DX +9 / - 3 ✓ Closing fragment
09-23 16:18 80m - / - UB4CLH -6 / - 3 Partial capture
09-23 16:16 80m -17 / -7 UB4FGK -6 / -7 5 ✓ Full exchange observed
09-23 16:14 80m - / -11 RA6MQ +11 / - 4 ✓ Closing fragment
09-22 17:59 80m -7 / -20 F1PBZ +10 / -14 5 ✓ Full exchange observed
09-22 17:57 80m -13 / - RI1FJZ - / - 2 Partial capture
09-22 17:50 80m -10 / - RI1FJZ - / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
041645 -13  437  UA3DUJ RT6DU KN94 (x2)
175000 -17 1832  UA3DUJ G7BTP RR73
173015 -11 2138  UA3DUJ PE1NPS JO22
173015 +14 2751  UA3DUJ IU2THY JN45
173015  -6 1906  UA3DUJ DK7ZT +00
173045  +4 2182  UA3DUJ SV2AEL KN10
173045 +15 2750  UA3DUJ IU2THY JN45
173045  -6 1906  UA3DUJ DK7ZT +00
173115  +4 2182  UA3DUJ SV2AEL KN10
173115 +17 2750  UA3DUJ IU2THY JN45
173115  +1 1906  UA3DUJ DK7ZT +00
173145  +2 2182  UA3DUJ SV2AEL R-12
173145  +0 1906  UA3DUJ DK7ZT +00
173215  +7 2182  UA3DUJ SV2AEL 73
80m 
UTC    dB Audio  Message
172915 +11 2634  UA3DUJ R2EC R-10
172930  -9 2387  R2EC UA3DUJ RR73
172945 +14 2634  UA3DUJ R2EC 73
173145 -17 2388  4Z5AV UA3DUJ KO94 (x2)
164330  +4  894  UA3DUJ RM5F KO85
164330  -9 1970  UA3DUJ RK4UZ LO24 (x2)
164430  +7  894  UA3DUJ RM5F R-07 (x2)
164600  -5 2203  UA3DUJ RX7KIR R-10 (x2)
164730 +15 1570  UA3DUJ OK8AW JN79 (x3)
60m 
UTC    dB Audio  Message
170230 -14 2279  UA3DUJ PI4TX JO22 (x3)

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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