S55ML — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Slovenia Most frequent locator attributed to this token: JN75

Receiver-side FT8 activity involving S55ML, decoded by SO8OO in southeastern Poland. 25 FT8 messages attributed to this token as transmitter, on 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-07-17.

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 25 FT8 messages attributed to S55ML as the transmitting token by decoded message structure across 6 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 (84%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (88%); the estimated median was -21 dB.

Overview

25
Messages attributed
6
UTC dates decoded
14
Active 15-min windows
-21 dB
Estimated median S/N

Bands

20m · 25
First attributed message: 2026-06-11
Last attributed message: 2026-07-17 17:21 UTC

Observed FT8 message patterns

Attributed sample
25 messages
Active dates
6 UTC dates
Estimated median S/N
-21 dB
Estimated 10th-90th percentile
-24 to -15 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 22, moderate (-15 to -9 dB) 3, 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.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with S55ML 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 S55ML

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
JN75 · 21 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
708 km (approx.)
Last such locator decoded
2026-07-17 17:06 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 UTCBandS55ML S/NCounterpartCounterpart S/NMsgsCapture
08-22 22:28 20m - / - OZ2SPACE -6 / - 6 Partial capture
07-17 16:56 20m - / -18 E74BMN -14 / - 8 Partial capture
07-16 18:19 20m - / -16 CR7BRV -6 / - 2 ✓ Closing fragment
07-14 16:14 20m - / -16 EA5RR -12 / - 2 ✓ Closing fragment
07-12 09:03 20m - / -15 F4LQJ -12 / - 2 Partial capture
07-12 08:56 20m - / -18 F4LQJ -14 / - 3 Partial capture
07-09 19:13 20m - / -11 G0VFB +4 / - 2 ✓ Closing fragment
07-09 19:04 20m - / -15 CR7BUJ -12 / - 2 ✓ Closing fragment
07-08 17:42 20m - / - EA1ERH -12 / - 2 Partial capture
07-08 17:41 20m - / -3 F5RRS -7 / - 3 ✓ Closing fragment
07-07 16:06 20m - / - F8AEJ -12 / - 2 ✓ Closing fragment
07-06 17:51 20m - / - HB9RYB -21 / - 2 Partial capture
07-05 15:20 20m - / - DF4TC -20 / - 3 Partial capture
07-04 06:42 20m - / -2 F1ODM -8 / - 2 ✓ Closing fragment
07-03 15:21 20m - / -5 TM8WWA -9 / - 2 ✓ Closing fragment
07-03 15:12 20m - / - M8KKH -8 / - 3 Partial capture
07-02 19:04 20m - / -12 TM2WWA -10 / - 2 ✓ Closing fragment
06-30 17:31 20m -23 / - SV3AUW - / - 2 Partial capture
06-27 11:53 10m - / -19 DF2KD -6 / - 2 ✓ Closing fragment
06-26 17:22 10m - / -14 M0BEW -3 / - 3 ✓ Closing fragment
06-26 07:20 10m - / -17 PD2BS -10 / - 5 ✓ Closing fragment
06-25 09:48 10m - / -11 IQ0OS -4 / - 2 ✓ Closing fragment
06-25 09:42 10m - / -9 IU7SEL -4 / - 2 ✓ Closing fragment
06-25 09:23 10m - / -1 IZ6CLN -4 / - 2 ✓ Closing fragment
06-25 09:22 10m - / -13 CR7BRV -6 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
165630 -15 2085  S55ML E74BMN -18 (x7)
170645 -24 1347  IU6UAQ S55ML JN75
172115 -22 1347  F4NJZ S55ML R-08
222830  -4 2443  S55ML OZ2SPACE (x6)
40m 
UTC    dB Audio  Message
052030  -9 1816  S55ML <...> -15
10m 
UTC    dB Audio  Message
094230  -4 1882  S55ML IU7SEL RR73
094600  -5 2602  S55ML IQ4JO 73
094830  -4  430  S55ML IQ0OS -11 (x2)
072045  -8 1967  S55ML PD2BS JO33 (x5)
172230  -5 1464  S55ML M0BEW -14 (x3)
115315  -7 1575  S55ML DF2KD -19 (x2)
121830 -11  737  S55ML SV2CLJ -03

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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