AA3B — 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: FN20

Receiver-side FT8 activity involving AA3B, decoded by SO8OO in southeastern Poland. 2,952 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 22 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-22.

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 2,952 FT8 messages attributed to AA3B as the transmitting token by decoded message structure across 22 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (55%), followed by 20 m (33%) and 80 m (12%). Most decodes (76%) fell within the six-hour window 22:00-04:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (60%); the estimated median was -6.6 dB.

Overview

2,952
Messages attributed
22
UTC dates decoded
160
Active 15-min windows
-6.6 dB
Estimated median S/N

Bands

First attributed message: 2026-06-07
Last attributed message: 2026-10-22 01:04 UTC

Observed FT8 message patterns

Attributed sample
2,952 messages
Active dates
22 UTC dates
Estimated median S/N
-6.6 dB
Estimated 10th-90th percentile
-15 to +7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 269, moderate (-15 to -9 dB) 906, strong (≥ -8 dB) 1,777.

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.

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 AA3B

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
FN20 · 1,457 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,111 km (approx.)
Last such locator decoded
2026-10-22 01:04 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 UTCBandAA3B S/NCounterpartCounterpart S/NMsgsCapture
10-22 00:53 40m -8 / - N9CBW - / 0 2 ✓ Closing fragment
10-22 00:42 40m -7 / - N9ZJ - / +9 2 ✓ Closing fragment
10-22 00:34 40m -4 / - N4OPI - / -2 2 ✓ Closing fragment
10-22 00:22 40m -6 / -14 R6JC -11 / -8 5 ✓ Full exchange observed
10-22 00:19 40m -8 / - KD4CVR - / 0 2 ✓ Closing fragment
10-22 00:15 40m -10 / - YU7AS - / -10 2 ✓ Closing fragment
10-22 00:14 40m -7 / - CT2IOK -17 / - 2 ✓ Closing observed
10-22 00:07 40m -3 / - CT2IOK -17 / +3 5 Partial capture
10-22 00:06 40m -6 / - VA3ROC - / - 2 ✓ Closing fragment
10-22 00:06 40m -7 / - I1YHU -7 / - 4 ✓ Closing observed
10-21 23:55 40m -6 / - KB9RCA - / +1 6 Partial capture
10-21 23:43 40m -6 / - WB8UFC - / - 2 ✓ Closing fragment
10-21 23:41 40m -6 / - F4NJU - / -15 2 ✓ Closing fragment
10-21 23:37 40m -5 / - N8AJ - / -6 3 ✓ Closing fragment
10-21 23:33 40m -6 / - DL4DW - / +1 2 ✓ Closing fragment
10-21 23:25 40m -9 / - KD3BLX - / -7 2 ✓ Closing fragment
10-21 23:25 40m -8 / -8 G1LQT -9 / -5 7 ✓ Full exchange observed
10-21 23:19 40m -8 / - SP9DPM/P - / -14 4 Partial capture
10-21 23:18 40m -6 / - W8BZZ - / -5 2 ✓ Closing fragment
10-21 23:16 40m -8 / - G0GFC - / -15 2 ✓ Closing fragment
10-21 23:14 40m -9 / - OK2FD - / 0 2 ✓ Closing fragment
10-21 23:00 40m -6 / - KQ4WKP - / +1 2 ✓ Closing fragment
10-21 22:54 40m -8 / - GM7JQK - / -15 4 Partial capture
10-21 22:51 40m -6 / - 9A4UZ - / +1 3 ✓ Closing fragment
10-21 22:49 40m -6 / - DL4DP - / -17 2 ✓ Closing fragment
10-21 22:12 40m -8 / -7 EA3GAN -17 / +8 3 Partial capture
10-21 00:37 40m -18 / - GW5VOG -5 / -1 5 ✓ Full exchange observed
10-21 00:33 40m -17 / -16 A92AE -6 / -9 3 Partial capture
10-21 00:31 40m -19 / -6 M9XPN -4 / -2 8 ✓ Full exchange observed
10-21 00:27 40m -16 / - TA3XEE - / -20 4 ✓ Closing fragment
10-21 00:25 40m -15 / -12 R6AAG -8 / -16 4 ✓ Full exchange observed
10-21 00:16 40m -13 / - KB1GTG - / - 2 ✓ Closing fragment
10-19 01:06 40m -13 / -25 RA1QEA +2 / - 5 ✓ Closing observed
10-19 01:03 40m -11 / - KI4KWR - / -1 2 ✓ Closing fragment
10-19 00:49 40m -12 / -12 RA6FC -6 / -18 4 ✓ Full exchange observed
10-19 00:45 40m -9 / - PA2ES -6 / - 3 ✓ Closing observed
10-19 00:38 40m -11 / - PD0DDA - / -8 7 Partial capture
10-19 00:34 40m -10 / - GM4KHE - / -9 3 ✓ Closing fragment
10-19 00:33 40m -10 / - GM7JQK - / -9 2 ✓ Closing fragment
10-19 00:28 40m -8 / - PB2A -15 / 0 5 ✓ Closing observed
10-19 00:20 40m -8 / - KN4OSY - / +2 2 ✓ Closing fragment
10-19 00:13 40m -8 / - HI8JCD -20 / +3 3 ✓ Closing observed
10-19 00:05 40m -7 / - EI3JCB - / -13 3 ✓ Closing fragment
10-19 00:00 40m -9 / - PD0DDA - / -17 7 Partial capture
10-18 23:57 40m -11 / - SP5MIG - / -6 2 ✓ Closing fragment
10-18 23:54 40m -10 / -8 DL1MEV +3 / -10 4 ✓ Full exchange observed
10-18 23:53 40m -11 / - W5OY - / -14 2 ✓ Closing fragment
10-18 23:50 40m -14 / -3 G0KUC -5 / - 4 ✓ Closing observed
10-18 23:47 40m -11 / -7 F1PBZ -1 / +4 4 ✓ Full exchange observed
10-17 00:10 40m -24 / - K3DQB - / +5 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
005400  -5 2734  CQ AA3B FN20 (x7)
005900  -9 2734  SM2LIY AA3B -01
010100 -10 2734  CQ AA3B FN20 (x7)
10m
UTC    dB Audio  Message
150200 -10  299  AA3B CR7CAU IM59
153400 -17 1594  AA3B CS7BPG R-04
155500 -17 1801  AA3B CT1EQQ RR73
151315 -21 1591  AA3B CT7ATA R-03 (x2)
153715  -7 1478  AA3B EA4ECT IN80
144600 -13 2495  AA3B CR7BUW IM58
80m
UTC    dB Audio  Message
223845  -7 1742  AA3B SP9OJ JN99 (x15)
20m
UTC    dB Audio  Message
115715  -1 2754  RA0SE AA3B R-18
115745  -2 2754  CQ AA3B FN20
115800  -1 2754  AA3B M0ENG IO91
115815  -1 2754  M0ENG AA3B -18
115830  +2 2753  AA3B M0ENG R-17
115845  -4 2753  M0ENG AA3B RR73
115900  +2 2754  AA3B M0ENG 73
115900 +11 2971  AA3B G0RIF IO92
115915  -7 2754  G0RIF AA3B -22
115930 +10 2971  AA3B G0RIF R-06
115945 -10 2754  G0RIF AA3B RR73
120000  -7 2754  AA3B RA0SE -11
120000  +7 2971  AA3B G0RIF 73
120030 -11 2754  AA3B RA0SE -11 (x2)
160m
UTC    dB Audio  Message
030415 +14 1110  AA3B DF2RQ JN57 (x3)
030715 -13 1233  AA3B F4UJU JN06
031145  -2 1234  AA3B YL4U KO06
031330 -19 1233  W4KWS AA3B R-23
031630 -20 1233  CQ AA3B FN20                          a1
031645  -8 1232  AA3B F4UJU JN06 (x3)
032245 -11 2596  AA3B LY2NZ KO05
032445  -5 1142  AA3B G7RAU IN79 (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

CW history is temporarily unavailable.

Explore CW reception at SO8OO

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