UA4AOC — 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: LO10

Receiver-side FT8 activity involving UA4AOC, decoded by SO8OO in southeastern Poland. 831 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 39 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-11-05.

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 831 FT8 messages attributed to UA4AOC as the transmitting token by decoded message structure across 39 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (55%), followed by 20 m (30%) and 10 m (10%). Most decodes (78%) 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 -14 dB.

Overview

831
Messages attributed
39
UTC dates decoded
171
Active 15-min windows
-14 dB
Estimated median S/N

Bands

80m · 46 40m · 457 20m · 248 10m · 80
First attributed message: 2026-06-06
Last attributed message: 2026-11-05 17:31 UTC

Observed FT8 message patterns

Attributed sample
831 messages
Active dates
39 UTC dates
Estimated median S/N
-14 dB
Estimated 10th-90th percentile
-21 to -3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 339, moderate (-15 to -9 dB) 288, strong (≥ -8 dB) 204.

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 UA4AOC 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 UA4AOC

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
LO10 · 387 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,505 km (approx.)
Last such locator decoded
2026-11-05 17:31 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 UTCBandUA4AOC S/NCounterpartCounterpart S/NMsgsCapture
11-05 17:34 40m - / -17 S57BTI -2 / - 3 ✓ Closing fragment
11-05 17:32 40m - / -17 GM0SDV -22 / - 2 Partial capture
11-05 17:10 40m -19 / - E70A - / -21 3 ✓ Closing fragment
11-05 15:56 40m -4 / -13 PC6A -2 / -11 4 ✓ Full exchange observed
11-05 15:49 40m -15 / - R9FGJ - / -14 2 Partial capture
11-05 15:22 40m - / - OH3MB +2 / - 2 Partial capture
11-05 15:18 40m -20 / -13 RJ6L -11 / - 5 ✓ Closing observed
11-05 15:16 40m -22 / - UA4WKE -24 / -7 4 ✓ Closing observed
10-24 14:53 40m -5 / -7 RK3YWS/P -6 / -1 5 ✓ Full exchange observed
10-13 19:28 40m -8 / - F4NFM -14 / -16 4 ✓ Closing observed
10-13 19:26 40m -10 / -7 DL9FFM -9 / -16 3 ✓ Full exchange observed
10-13 19:11 40m - / -18 PH7GD -12 / - 9 Partial capture
10-03 14:43 40m - / +10 R6ZL -2 / - 2 ✓ Closing fragment
10-03 14:40 40m - / -2 DL3DQL/P -2 / - 4 ✓ Closing fragment
10-03 14:40 40m - / - R6ZL -1 / - 2 Partial capture
10-03 14:34 40m - / -12 R3YAX -16 / - 3 ✓ Closing fragment
10-03 14:30 40m - / -1 EU1AFX -14 / - 2 ✓ Closing fragment
10-02 17:31 40m - / -16 DL9KM +1 / - 3 ✓ Closing fragment
10-02 17:28 40m -22 / - VU3IHP - / -12 2 Partial capture
10-02 17:18 40m -16 / - RU9BM - / -13 2 ✓ Closing fragment
10-02 17:09 40m - / -19 PA8DC -3 / - 4 ✓ Closing fragment
10-02 17:06 40m -20 / - YO4AAC - / -4 2 ✓ Closing fragment
10-02 17:02 40m - / -4 SM7IUN -12 / - 2 ✓ Closing fragment
10-02 16:59 40m - / -7 DL8WEM +4 / - 3 ✓ Closing fragment
10-02 16:53 40m -10 / - RO2E/M - / - 2 Partial capture
10-02 16:52 40m -10 / - R6FMM - / -12 3 ✓ Closing fragment
09-27 16:59 40m - / -8 RD6AK -1 / - 3 ✓ Closing fragment
09-27 16:57 40m -16 / -9 RO6OP -3 / - 3 ✓ Closing observed
09-27 16:57 40m - / - DL9KM -5 / - 6 Partial capture
09-27 16:49 40m - / - F4CPJ -7 / - 4 Partial capture
09-27 16:49 40m -8 / -11 RD3FY -8 / - 4 ✓ Closing observed
09-27 16:40 40m - / -1 R3EED -2 / - 2 Partial capture
09-27 16:33 40m -21 / - RN6AK -2 / -3 3 Partial capture
09-27 16:31 40m - / - DH0BRO -4 / - 2 Partial capture
09-27 16:30 40m -16 / -6 RX6ABW -10 / - 2 ✓ Closing observed
09-27 16:18 40m - / -14 IK0BAL -5 / - 2 Partial capture
09-27 16:13 40m -18 / -12 R4PEQ -12 / -13 3 ✓ Full exchange observed
09-04 19:22 40m - / -4 R6OD +7 / - 5 ✓ Closing fragment
09-04 19:09 40m - / -11 SP0LPR -10 / - 2 Partial capture
09-04 18:47 40m -2 / +1 R6OV -2 / -6 4 ✓ Full exchange observed
09-04 18:45 40m -1 / -21 EA4BNB -16 / - 2 ✓ Closing observed
09-04 18:33 40m - / -9 EU2AAI +1 / - 3 ✓ Closing fragment
09-04 18:29 40m - / -12 ON1DGN -20 / - 2 Partial capture
09-04 18:28 40m - / -17 9A3TGT -2 / - 3 ✓ Closing fragment
09-04 18:18 40m - / -4 R2APC -1 / - 2 ✓ Closing fragment
09-01 19:01 80m -15 / - UA6EU - / -9 2 ✓ Closing fragment
09-01 18:47 80m - / - RA3SO -22 / - 2 Partial capture
09-01 18:38 80m - / -18 SP6FME +8 / - 3 ✓ Closing fragment
09-01 18:31 80m -15 / -16 SP6FME +12 / -16 3 Partial capture
08-27 17:29 80m -24 / - OH5CY -23 / - 2 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
170930 -22 1901  CQ UA4AOC LO10
171000 -22 1900  E70A UA4AOC LO10 (x3)
171200 -20 1900  GB1RBL UA4AOC 73
171300 -20 1900  F4JTP UA4AOC LO10
172130 -11 1955  EU1DC UA4AOC LO10
172430 -22 1954  UA4AOC RA3LBW KO64
173015 -19 1880  R2BBT UA4AOC 73
173145 -14 1880  R2ZAA UA4AOC LO10
173230 -20 1880  UA4AOC GM0SDV -17 (x2)
173400  +6  656  UA4AOC S57BTI JN75 (x3)
80m 
UTC    dB Audio  Message
184715 -24 1609  UA4AOC RA3SO KO93 (x2)
185100 -11 2297  CQ UA4AOC LO10 (x2)
185645  -6 2413  UA4AOC SM7GIB JO65
185700 -13 2298  CQ UA4AOC LO10 (x3)
190100 -16 2297  UA6EU UA4AOC -09 (x2)
190230 -22 2298  CQ UA4AOC LO10 (x5)
20m 
UTC    dB Audio  Message
140145  -8 1757  RI1FJL UA4AOC -06 (x6)
140515  -6 2201  W1YY UA4AOC R-14 (x2)
140845  -7 1286  RI1FJL UA4AOC LO10 (x7)
10m 
UTC    dB Audio  Message
181215  -4 2487  UA4AOC DN9OPA JN38 (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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