YU1OR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Serbia Most frequent locator attributed to this token: KN04

Receiver-side FT8 activity involving YU1OR, decoded by SO8OO in southeastern Poland. 85 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-15 and 2026-06-16.

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 85 FT8 messages attributed to YU1OR as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -2 dB; no usual signal pattern is inferred.

Overview

85
Messages attributed
2
UTC dates decoded
7
Active 15-min windows
-2 dB
Estimated median S/N

Bands

40m · 85
First attributed message: 2026-06-15
Last attributed message: 2026-06-16 11:53 UTC

Observed FT8 message patterns

Attributed sample
85 messages
Active dates
2 UTC dates
Estimated median S/N
-2 dB
Estimated 10th-90th percentile
-7 to +4 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 84.

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 YU1OR in decoded directed-looking exchanges:

Most frequent locator attributed to YU1OR

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
KN04 · 34 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
608 km (approx.)
Last such locator decoded
2026-06-15 20:52 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 UTCBandYU1OR S/NCounterpartCounterpart S/NMsgsCapture
08-23 15:31 20m - / -10 RX6DY -17 / - 3 Partial capture
08-23 15:28 20m - / - M0SCK -5 / - 2 Partial capture
08-23 15:28 20m - / - DL1R -1 / - 9 Partial capture
08-23 15:21 20m - / - M7YVZ +2 / - 3 Partial capture
08-23 15:12 20m - / -16 IU5HIU -14 / - 3 ✓ Closing fragment
08-23 15:06 20m - / -14 F4AWT +2 / - 3 ✓ Closing fragment
08-23 15:04 20m - / - IZ4AIF -10 / - 2 ✓ Closing fragment
08-23 15:02 20m - / -13 ON1AJ -8 / - 2 Partial capture
08-23 14:59 20m - / -15 UN7PNF -12 / - 8 Partial capture
08-23 14:54 20m - / - UA3ZMQ -3 / - 3 ✓ Closing fragment
08-23 14:53 20m - / +8 R6ADH -15 / - 4 ✓ Closing fragment
08-23 14:51 20m - / - M8KKH -3 / - 2 Partial capture
08-15 13:41 20m - / -8 GB2CLH -6 / - 2 ✓ Closing fragment
08-15 13:13 20m - / - EA3AGF -15 / - 3 Partial capture
08-15 12:44 20m - / - F5NNN -10 / - 2 ✓ Closing fragment
08-15 12:39 20m - / -19 PD9FLX -19 / - 2 ✓ Closing fragment
08-15 12:36 20m - / -6 M0RJV -7 / - 4 ✓ Closing fragment
08-15 12:29 20m - / -2 ON8MA -15 / - 4 ✓ Closing fragment
07-26 11:08 20m - / -12 F1PBZ -6 / - 2 Partial capture
07-26 11:05 20m - / -22 SP1MGM -14 / - 2 Partial capture
07-26 09:57 20m - / -24 PA2AMJ -21 / - 2 ✓ Closing fragment
07-26 09:46 20m - / - PD4FL -14 / - 3 ✓ Closing fragment
07-26 09:46 20m - / - RA6OY -3 / - 4 Partial capture
07-15 15:47 20m - / -13 A71QQ -8 / - 2 ✓ Closing fragment
07-15 15:42 20m - / -3 EA5ET -4 / - 4 ✓ Closing fragment
07-15 15:28 20m - / -16 M0SCK -14 / - 2 Partial capture
07-12 13:58 20m - / -14 RW6B 0 / - 6 ✓ Closing fragment
07-12 13:49 20m - / +3 EA3HMM +3 / - 7 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
152200  -4 2269  YU1OR M7YVZ IO93
152800  -2 2658  YU1OR DL1R JN58
152830  -9 1540  YU1OR M0SCK IO83
152830  +2 2658  YU1OR DL1R JN58
152900  -1 1540  YU1OR M0SCK IO83
152900  -6 2658  YU1OR DL1R JN58 (x4)
153100 -18 1816  YU1OR RX6DY -10
153100  +2 2658  YU1OR DL1R JN58
153130 -17 1815  YU1OR RX6DY -10
153130  +0 2658  YU1OR DL1R JN58
153200 -17 1815  YU1OR RX6DY -10
153200  -5 2658  YU1OR DL1R JN58

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