CU8AF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Azores Most frequent locator attributed to this token: HM49

Receiver-side FT8 activity involving CU8AF, decoded by SO8OO in southeastern Poland. 89 FT8 messages attributed to this token as transmitter, on 20m, across 14 UTC dates in the available aggregate history. Observed between 2026-06-16 and 2026-08-30.

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 89 FT8 messages attributed to CU8AF as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

89
Messages attributed
14
UTC dates decoded
18
Active 15-min windows
-10 dB
Estimated median S/N

Bands

20m · 89
First attributed message: 2026-06-16
Last attributed message: 2026-08-30 10:05 UTC

Observed FT8 message patterns

Attributed sample
89 messages
Active dates
14 UTC dates
Estimated median S/N
-10 dB
Estimated 10th-90th percentile
-16 to 0 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 12, moderate (-15 to -9 dB) 36, strong (≥ -8 dB) 41.

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 CU8AF 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 CU8AF

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
HM49 · 50 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
4,234 km (approx.)
Last such locator decoded
2026-08-30 10:05 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 UTCBandCU8AF S/NCounterpartCounterpart S/NMsgsCapture
08-30 10:04 20m -6 / - M9LCB - / - 2 Partial capture
08-30 09:38 20m - / +3 LB8TG -7 / - 4 Partial capture
08-29 09:59 20m -4 / - AO5FSB - / 0 5 ✓ Closing fragment
08-29 09:57 20m +2 / - SP7FID - / -4 4 ✓ Closing fragment
08-29 09:55 20m +2 / - F6HUK - / +2 3 Partial capture
08-29 09:54 20m +1 / - M9PMB - / -5 2 ✓ Closing fragment
08-29 09:49 20m - / +7 EB5AL -10 / - 4 Partial capture
08-29 09:48 20m - / -14 RM4N -11 / - 4 Partial capture
08-29 09:45 20m - / - G0VLF -17 / - 9 Partial capture
08-29 09:44 20m -4 / - EC5M -16 / - 2 ✓ Closing observed
08-29 09:40 20m -10 / - RI1FJL - / - 4 Partial capture
08-24 10:04 20m -2 / - M0LAD - / - 2 Partial capture
08-24 10:01 20m - / - SM3VOX -14 / - 3 Partial capture
08-24 10:00 20m 0 / -3 M0LAD -1 / - 4 Partial capture
08-23 10:14 20m - / - UD6AWJ +4 / - 2 Partial capture
08-23 10:12 20m -4 / - M6VHR - / -5 2 ✓ Closing fragment
08-23 10:08 20m - / -8 F4LHL -2 / - 2 ✓ Closing fragment
08-23 10:05 20m -6 / - LZ2PAJ - / -1 3 ✓ Closing fragment
08-23 10:02 20m - / -1 EA3NG 0 / - 2 ✓ Closing fragment
08-19 09:54 20m -14 / - ON3JJT - / - 3 Partial capture
08-19 09:50 20m -15 / - IN3JRZ - / -2 4 Partial capture
08-19 09:49 20m -15 / - PA6A - / - 3 Partial capture
08-19 09:47 20m -13 / - DK5OPA -9 / -5 3 ✓ Full exchange observed
08-19 09:46 20m -15 / - PA1X -13 / +7 4 ✓ Closing observed
08-14 09:40 20m -17 / - EA5BCO -19 / - 4 ✓ Closing observed
08-10 10:17 20m -14 / - 2E1HAT - / - 4 Partial capture
08-02 10:00 20m -12 / - PE0F -3 / - 4 ✓ Full exchange observed
08-01 10:20 20m -15 / - M7SDQ -16 / +2 2 ✓ Closing observed
07-20 09:56 20m - / - DL4FCK -3 / - 3 Partial capture
06-29 10:22 20m -18 / - EA2EED -9 / - 3 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
095845  -1 1255  SP7FID CU8AF R-04 (x2)
095945  -1 1255  AO5FSB CU8AF HM49 (x4)
100130  +5  320  CU8AF EN35UKR -03
100145  -6 1254  AO5FSB CU8AF R-06
093815  -8 1283  CU8AF LB8TG +03 (x4)
100215 +10  357  CU8AF PE5CFG RR73
100445  -6 1254  M9LCB CU8AF HM49 (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.

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