NU3A — 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: FM29

Receiver-side FT8 activity involving NU3A, decoded by SO8OO in southeastern Poland. 31 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 10 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-01.

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 31 FT8 messages attributed to NU3A as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (81%), followed by 20 m (19%). Most decodes (100%) fell within the six-hour window 21:00-03:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.

Overview

31
Messages attributed
10
UTC dates decoded
11
Active 15-min windows
-16 dB
Estimated median S/N

Bands

40m · 25 20m · 6
First attributed message: 2026-06-06
Last attributed message: 2026-10-01 02:00 UTC

Observed FT8 message patterns

Attributed sample
31 messages
Active dates
10 UTC dates
Estimated median S/N
-16 dB
Estimated 10th-90th percentile
-19 to -8 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 16, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 8.

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 NU3A 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 NU3A

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
FM29 · 22 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,189 km (approx.)
Last such locator decoded
2026-10-01 02:00 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 UTCBandNU3A S/NCounterpartCounterpart S/NMsgsCapture
10-13 23:23 40m - / -13 UR3LM -16 / - 3 ✓ Closing fragment
10-13 23:21 40m - / -12 F8MRQ -8 / - 4 ✓ Closing fragment
10-13 23:20 40m - / -11 DH1KJ -10 / - 3 Partial capture
10-06 01:27 40m - / -7 C5R -20 / - 2 Partial capture
10-01 02:00 40m -20 / - TA3NK - / - 2 Partial capture
09-23 00:15 40m -8 / - R3BGQ/P - / - 8 Partial capture
09-18 23:30 40m - / - F4HXJ -2 / - 2 Partial capture
09-16 01:11 40m -13 / - RD9M/3 - / -8 2 Partial capture
09-16 01:06 40m -13 / - RD9M/3 - / - 2 Partial capture
09-04 22:59 40m - / -23 G1CEC -6 / - 7 ✓ Closing fragment
08-28 01:31 40m -14 / -7 KQ4NAQ -17 / +5 7 ✓ Full exchange observed
08-28 01:25 40m -18 / - IK3FHW/IT9 - / - 3 Partial capture
08-21 21:43 20m -20 / - 8Z1IT - / - 2 Partial capture
08-21 00:50 20m - / -5 9K2GR +10 / - 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
023500  -3  454  NU3A P4/WE9V -09
023530  -8  454  NU3A RR73; UR5KC <...> -10
40m 
UTC    dB Audio  Message
002030  -8 2477  R3BGQ/P NU3A FM29
020015 -19 1877  TA3NK NU3A FM29 (x2)
012700 -21 1667  NU3A C5R -07 (x2)
232000 -13  454  NU3A DH1KJ -11 (x3)
232130  -3 1909  NU3A F8MRQ JN17 (x4)
232330  -8 1909  NU3A UR3LM KN89 (x3)
10m 
UTC    dB Audio  Message
144830 -18 2129  NU3A CN8NS RR73
20m 
UTC    dB Audio  Message
172130 -17 1191  NU3A EA1FCS -10
005030 +12 2250  NU3A 9K2GR -05 (x2)
214300 -19 1868  8Z1IT NU3A FM29 (x2)
232300 -18 1884  <...> NU3A FM29

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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