AA4U — 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: EM64

Receiver-side FT8 activity involving AA4U, decoded by SO8OO in southeastern Poland. 8 FT8 messages attributed to this token as transmitter, on 80m, across 3 UTC dates in the available aggregate history. Observed between 2026-07-29 and 2026-09-25.

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 8 FT8 messages attributed to AA4U as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (100%). In this small sample, the estimated median decoder S/N was -24 dB; no usual signal pattern is inferred.

Overview

8
Messages attributed
3
UTC dates decoded
4
Active 15-min windows
-24 dB
Estimated median S/N

Bands

80m · 8
First attributed message: 2026-07-29
Last attributed message: 2026-09-25 04:11 UTC

Observed FT8 message patterns

Attributed sample
8 messages
Active dates
3 UTC dates
Estimated median S/N
-24 dB
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 0.

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 AA4U in decoded directed-looking exchanges:

Most frequent locator attributed to AA4U

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
EM64 · 5 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,314 km (approx.)
Last such locator decoded
2026-09-25 04:11 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 UTCBandAA4U S/NCounterpartCounterpart S/NMsgsCapture
10-12 05:39 60m - / -12 S52QM +8 / - 3 ✓ Closing fragment
09-25 04:11 80m - / - IZ2QPP -2 / - 4 Partial capture
09-25 04:05 80m - / - LZ2VQ -3 / - 2 Partial capture
09-25 04:01 80m - / -24 ON6AA +13 / - 13 ✓ Closing fragment
09-25 03:54 80m - / -16 DK7ZT +5 / - 4 Partial capture
09-25 03:54 80m - / -23 UX5UO +6 / - 6 ✓ Closing fragment
09-25 03:51 80m - / - ON6AA +6 / - 2 Partial capture
09-25 03:51 80m -23 / -15 ON7GB +2 / -14 6 Partial capture
09-25 03:47 80m - / - ON6AA +1 / - 3 Partial capture
08-24 02:32 80m - / -20 SP3SLA +16 / - 2 ✓ Closing fragment
08-24 02:32 80m - / -16 MM0KQC -7 / - 2 Partial capture
08-20 04:34 20m - / -4 HB9TIH -18 / - 3 Partial capture
08-20 04:31 20m - / -19 Z35T -6 / - 2 ✓ Closing fragment
08-20 02:16 60m - / -17 F5PBG -6 / - 5 ✓ Closing fragment
08-17 04:44 60m - / -4 F1TXI -12 / - 2 ✓ Closing fragment
08-17 04:41 60m - / -13 HB9MFD +6 / - 8 Partial capture
08-17 04:40 60m - / -16 PA3T -10 / - 2 ✓ Closing fragment
08-17 04:38 60m - / -10 DL1UDO -16 / - 2 ✓ Closing fragment
08-17 04:35 60m - / - SP8AWL +10 / - 4 Partial capture
08-17 04:32 60m - / -15 G4ZFJ -1 / - 5 ✓ Closing fragment
08-16 04:09 60m - / -3 PI4DX -8 / - 2 ✓ Closing fragment
08-05 02:25 60m - / -13 IK4CBO -8 / - 2 ✓ Closing fragment
08-05 02:23 60m - / -17 DD6ZV +3 / - 9 Partial capture
08-05 02:21 60m - / -7 F6EQZ +2 / - 2 ✓ Closing fragment
08-05 02:09 60m - / - DB3ZY -5 / - 2 ✓ Closing fragment
08-05 02:09 60m - / -15 9A60CBM -11 / - 2 Partial capture
08-05 02:05 60m - / -6 DM8KM +1 / - 2 ✓ Closing fragment
08-05 02:05 60m - / - DB3ZY -3 / - 3 Partial capture
08-05 02:02 60m - / -17 HG8LXL +4 / - 3 ✓ Closing fragment
08-02 02:57 80m - / +8 AF4HS -22 / - 2 ✓ Closing fragment
07-29 02:05 80m - / -12 KR4SO -20 / - 2 ✓ Closing fragment
07-29 01:57 80m -24 / - WC4Y - / - 2 Partial capture
07-27 02:14 60m - / -1 DL1LCK -1 / - 5 ✓ Closing fragment
07-27 02:12 60m - / -11 DF8AA +7 / - 3 ✓ Closing fragment
07-26 02:01 80m - / - F4FPR -12 / - 5 Partial capture
07-26 01:53 80m - / -12 W1MK -6 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

60m 
UTC    dB Audio  Message
044330 +10  646  AA4U HB9MFD R-26 (x3)
044445 -13 1477  AA4U F1TXI -04 (x2)
044600  -1  645  AA4U HB9MFD R-26
021630  -9 1164  AA4U F5PBG IN78 (x5)
034315  +2  695  AA4U IZ8VYU JN71
053945  +7 2344  AA4U S52QM -12 (x3)
80m 
UTC    dB Audio  Message
040415 +11 2504  AA4U ON6AA R-20 (x2)
040515  -1 2427  AA4U LZ2VQ KN23 (x2)
040630  +7 2504  AA4U ON6AA R-20 (x6)
041100  +0 1704  AA4U IZ2QPP JN46
041115 -20 2503  EC5M AA4U EM64
041130  -3 1704  AA4U IZ2QPP JN46 (x3)
20m 
UTC    dB Audio  Message
043100  -9 2900  AA4U Z35T -19 (x2)
043400 -20 2084  AA4U HB9TIH JN36
043430  -7 2953  AA4U UR3LM KN89
043430 -16 2084  AA4U HB9TIH JN36 (x2)

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

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee