5B4AQA — 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: Cyprus Most frequent locator attributed to this token: KM65

Receiver-side FT8 activity involving 5B4AQA, decoded by SO8OO in southeastern Poland. 26 FT8 messages attributed to this token as transmitter, on 40m, 10m, across 2 UTC dates in the available aggregate history. Observed between 2026-10-30 and 2026-10-31.

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 26 FT8 messages attributed to 5B4AQA as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (85%), followed by 40 m (15%). In this small sample, the estimated median decoder S/N was -9 dB; no usual signal pattern is inferred.

Overview

26
Messages attributed
2
UTC dates decoded
5
Active 15-min windows
-9 dB
Estimated median S/N

Bands

40m · 4 10m · 22
First attributed message: 2026-10-30
Last attributed message: 2026-10-31 10:27 UTC

Observed FT8 message patterns

Attributed sample
26 messages
Active dates
2 UTC dates
Estimated median S/N
-9 dB
Estimated 10th-90th percentile
-12 to -6 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 17, strong (≥ -8 dB) 9.

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 5B4AQA in decoded directed-looking exchanges:

Most frequent locator attributed to 5B4AQA

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
KM65 · 6 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,844 km (approx.)
Last such locator decoded
2026-10-31 10:03 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 UTCBand5B4AQA S/NCounterpartCounterpart S/NMsgsCapture
11-04 19:16 40m - / - RV3V +5 / - 2 Partial capture
11-04 18:15 40m - / -14 R6DZR -14 / - 2 Partial capture
11-04 18:09 40m - / -18 UR4QGV -8 / - 4 ✓ Closing fragment
11-04 18:03 40m - / -19 SM4WWY -4 / - 3 ✓ Closing fragment
11-04 13:33 10m - / -7 DL4BHA -17 / - 8 Partial capture
11-04 13:27 10m - / -5 DL4BHA -16 / - 3 Partial capture
11-04 13:20 10m - / - DH1PS -6 / - 4 Partial capture
11-04 13:19 10m - / +1 DL4JTH -9 / - 7 ✓ Closing fragment
10-31 15:06 40m - / -25 UD3T +4 / - 2 ✓ Closing fragment
10-31 13:23 10m - / -21 EC5CFV -13 / - 3 ✓ Closing fragment
10-31 11:19 10m - / -2 CR7BUJ -6 / - 2 ✓ Closing fragment
10-31 11:07 10m - / - CR7BUW -22 / - 2 Partial capture
10-31 10:58 10m - / -6 EA1IOK -5 / - 6 ✓ Closing fragment
10-31 10:25 10m -10 / - R2RA - / +4 2 ✓ Closing fragment
10-31 10:17 10m -11 / - RV3YR - / +10 3 ✓ Closing fragment
10-31 10:00 10m - / - CT2IUJ -14 / - 2 ✓ Closing fragment
10-31 09:32 10m -8 / - DN9DJE - / -13 3 ✓ Closing fragment
10-31 09:30 10m -5 / - DO1WWA - / -4 3 Partial capture
10-30 23:56 40m -10 / -16 F5PBG +9 / -19 7 Partial capture
10-30 23:25 40m - / - EA3CCI +2 / - 4 Partial capture
10-30 23:17 40m - / -24 ON1JP -14 / - 2 Partial capture
10-30 23:11 40m - / - EA3CCI -8 / - 4 Partial capture
10-29 18:31 40m - / - OH3MB +14 / - 2 Partial capture
10-29 18:23 40m - / -10 UR6QA +1 / - 10 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
230145 -17 2206  5B4AQA MI7XHT IO64
180330  -3 2551  5B4AQA SM4WWY JO79 (x3)
180930  -8  275  5B4AQA UR4QGV KN77 (x4)
181500 -15 1288  5B4AQA R6DZR KN84 (x2)
191315  -1 2009  5B4AQA R7LA KN97
191345 -10 1109  5B4AQA R4FDK R-14
191615  +5  680  5B4AQA RV3V LO06 (x3)
10m 
UTC    dB Audio  Message
132200  -6 2087  5B4AQA DL4JTH RR73
132200  -3  731  5B4AQA DH1PS JO31
132230  -7 2087  5B4AQA DL4JTH 73
132700 -19 1266  5B4AQA DL4BHA -05 (x11)
135000 -16 2325  5B4AQA DD5GG JN39

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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