AC1NU — 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: United States Most frequent locator attributed to this token: FN42

Receiver-side FT8 activity involving AC1NU, decoded by SO8OO in southeastern Poland. 33 FT8 messages attributed to this token as transmitter, on 160m, 80m, across 3 UTC dates in the available aggregate history. Observed between 2026-09-04 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 33 FT8 messages attributed to AC1NU 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 (91%), followed by 80 m (9%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (88%); the estimated median was -22 dB.

Overview

33
Messages attributed
3
UTC dates decoded
7
Active 15-min windows
-22 dB
Estimated median S/N

Bands

160m · 30 80m · 3
First attributed message: 2026-09-04
Last attributed message: 2026-09-21 23:12 UTC

Observed FT8 message patterns

Attributed sample
33 messages
Active dates
3 UTC dates
Estimated median S/N
-22 dB
Estimated 10th-90th percentile
-24 to -15 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 29, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 3.

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 AC1NU in decoded directed-looking exchanges:

Most frequent locator attributed to AC1NU

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
FN42 · 21 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
6,716 km (approx.)
Last such locator decoded
2026-09-05 00:23 UTC

Other locator fields attributed to this token: FN64 (1).

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 UTCBandAC1NU S/NCounterpartCounterpart S/NMsgsCapture
09-21 23:13 80m - / - UR4LBG -2 / - 2 Partial capture
09-21 23:12 80m - / - DH3MFW -2 / - 2 Partial capture
09-21 23:12 80m - / -16 R7KKO -12 / - 2 Partial capture
09-21 23:12 80m - / - UA4FKT +5 / - 2 Partial capture
09-21 23:11 80m 0 / - RI1FJZ - / -15 3 ✓ Closing fragment
09-21 23:05 160m - / - ON1BD -9 / - 5 Partial capture
09-05 00:23 160m - / - SP2MKT -16 / - 4 Partial capture
09-05 00:22 160m -23 / - MM0GOR -17 / -17 2 ✓ Closing observed
09-05 00:17 160m - / -18 IZ1BII -4 / - 8 ✓ Closing fragment
09-05 00:15 160m - / - DL5ZB +12 / - 3 Partial capture
09-05 00:12 160m - / - OH2NAG -2 / - 3 Partial capture
09-05 00:06 160m - / - OH2NAG -6 / - 4 Partial capture
09-05 00:06 160m - / -20 UA6HFI -3 / - 6 ✓ Closing fragment
09-05 00:02 160m - / -12 S52F +3 / - 3 ✓ Closing fragment
09-05 00:02 160m - / -15 SP2HNF +5 / - 5 ✓ Closing fragment
09-05 00:00 160m - / - OK4FX -10 / - 3 Partial capture
09-04 23:59 160m - / -12 OG1Z +7 / - 3 ✓ Closing fragment
09-04 23:54 160m - / - Z31RQ -7 / - 2 Partial capture
09-04 23:53 160m - / - OK4FX -6 / - 2 Partial capture
09-04 23:51 160m - / - OH2NAG -3 / - 11 Partial capture
09-04 23:49 160m -19 / -17 OM2WQ +11 / - 6 ✓ Closing observed
09-04 23:47 160m - / - Z31RQ -12 / - 2 Partial capture
09-04 23:41 160m - / - E77PY -13 / - 3 Partial capture
09-04 23:41 160m - / - UA3PY -5 / - 8 Partial capture
09-04 23:39 160m -21 / -18 OZ1BUR -7 / - 9 ✓ Closing observed
09-04 23:38 160m - / - OH6RX -3 / - 11 Partial capture
09-04 23:38 160m - / - E77PY -14 / - 2 Partial capture
09-04 23:36 160m - / -25 TA2LG -3 / - 4 ✓ Closing fragment
09-04 23:34 160m - / -16 SP3IBS +11 / - 5 ✓ Closing fragment
09-04 23:33 160m -21 / -17 OH1MLZ +4 / - 18 ✓ Closing observed
09-04 23:30 160m - / -17 CT1EEX -20 / - 2 ✓ Closing fragment
09-04 23:29 160m -24 / - CT1FSG - / -14 2 ✓ Closing fragment
09-04 23:28 160m - / -20 OK1DXR +5 / - 19 ✓ Closing fragment
09-04 23:28 160m - / -12 SP5GW +5 / - 8 ✓ Closing fragment
09-04 23:28 160m - / -10 UX1UA +17 / - 4 ✓ Closing fragment
09-04 23:27 160m - / - OH2NAG -6 / - 9 Partial capture
09-04 23:27 160m - / - PF9Z -13 / - 6 Partial capture
09-04 23:27 160m - / - IZ1BII -5 / - 2 Partial capture
09-04 23:25 160m - / -17 HB9EFK +2 / - 2 ✓ Closing fragment
09-04 23:25 160m - / -25 RZ6BS +10 / - 4 ✓ Closing fragment
09-04 23:21 160m - / -18 F1PBZ -12 / - 2 Partial capture
09-04 23:20 160m - / - DL7VGU -8 / - 17 Partial capture
09-04 23:18 160m - / -14 DL1NEO +14 / - 3 ✓ Closing fragment
09-04 23:17 160m -22 / - PA3DP -18 / - 2 ✓ Closing observed
09-04 23:14 160m -24 / - DL1NEO +14 / -11 3 Partial capture
09-04 23:13 160m - / - OH2NAG -5 / - 10 Partial capture
09-04 23:12 160m - / - OH1MLZ -8 / - 3 Partial capture
09-04 23:12 160m - / -17 PA3DP -16 / - 2 Partial capture
09-04 23:10 160m - / -20 F4UJU -19 / - 4 ✓ Closing fragment
09-04 23:07 160m - / -18 PA3DP -9 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
231115  -2 1453  RI1FJZ AC1NU FN64 (x3)
231230  +0 1453  AC1NU UA4FKT LO23
231230 -10 2494  AC1NU R7KKO -16
231230  +1  812  AC1NU DH3MFW JN58
231300  -7 2290  AC1NU UR4LBG KN89
231300 -13 2495  AC1NU R7KKO -16
231300  -5  812  AC1NU DH3MFW JN58
231330  +4 2290  AC1NU UR4LBG KN89
231330 +10 1453  AC1NU UA4FKT LO23
160m 
UTC    dB Audio  Message
002215 -17 2047  AC1NU MM0GOR RR73
002300 -24 1941  CQ AC1NU FN42                         a1 (x2)
002345 -15 1942  AC1NU SP2MKT JO83 (x4)
020445 -12 2258  AC1NU OH6RX KP03
230400 -13  787  AC1NU RI1FJZ -16
230530 -11 1723  AC1NU ON1BD JO21
230530 -19 1453  AC1NU EA1CQ -10
230600 -10 1722  AC1NU ON1BD JO21 (x4)

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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