YB1SKR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Indonesia Most frequent locator attributed to this token: OI33

Receiver-side FT8 activity involving YB1SKR, decoded by SO8OO in southeastern Poland. 104 FT8 messages attributed to this token as transmitter, on 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-06-18.

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 104 FT8 messages attributed to YB1SKR as the transmitting token by decoded message structure across 5 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 (97%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

104
Messages attributed
5
UTC dates decoded
15
Active 15-min windows
-15 dB
Estimated median S/N

Bands

20m · 104
First attributed message: 2026-06-06
Last attributed message: 2026-06-18 16:16 UTC

Observed FT8 message patterns

Attributed sample
104 messages
Active dates
5 UTC dates
Estimated median S/N
-15 dB
Estimated 10th-90th percentile
-19 to -11 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 43, moderate (-15 to -9 dB) 58, strong (≥ -8 dB) 3.

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 YB1SKR in decoded directed-looking exchanges:

Most frequent locator attributed to YB1SKR

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
OI33 · 48 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
10,219 km (approx.)
Last such locator decoded
2026-06-18 16:16 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 UTCBandYB1SKR S/NCounterpartCounterpart S/NMsgsCapture
08-15 15:20 20m - / -17 RU3QR -18 / - 2 Partial capture
08-15 15:15 20m - / - DL1R +5 / - 3 Partial capture
08-15 15:15 20m - / -17 RU3QR -16 / - 5 Partial capture
08-08 12:47 20m - / -12 LB5SK -22 / - 3 ✓ Closing fragment
07-24 17:42 20m - / - F4MGP -19 / - 2 Partial capture
07-24 17:38 20m - / - US3LX -17 / - 3 Partial capture
07-24 17:31 20m - / - F4EGM -18 / - 6 Partial capture
07-22 15:24 20m - / -18 F5HGT -5 / - 6 Partial capture
07-05 17:36 20m - / - F4LHZ -18 / - 2 Partial capture
07-04 18:00 40m - / -15 II3WWA +2 / - 2 Partial capture
07-04 16:48 20m - / -12 TM2WWA -9 / - 3 ✓ Closing fragment
06-23 20:54 20m - / - M7LSN -18 / - 2 Partial capture
06-23 20:46 20m - / -18 G7FSI -16 / - 3 Partial capture
06-23 20:40 20m - / - M9WHQ +1 / - 6 Partial capture
06-18 15:42 20m - / -16 BA9BF -15 / - 3 Partial capture
06-18 15:39 20m - / - BI4IWL +2 / - 2 Partial capture
06-18 15:38 20m - / -17 R2DGN -3 / - 4 ✓ Closing fragment
06-18 15:36 20m - / -15 RN3GB -6 / - 4 ✓ Closing fragment
06-18 15:36 20m - / - YO9IBC -2 / - 3 Partial capture
06-18 15:34 20m - / - BI4IWL 0 / - 2 Partial capture
06-16 17:01 20m - / - 9A6R -18 / - 2 Partial capture
06-16 16:56 20m -16 / - ON4TUK - / -16 2 ✓ Closing fragment
06-16 16:53 20m -19 / - R9FAK - / -17 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
124800 -20 1632  YB1SKR LB5SK -12 (x2)
130830 -22 2087  YB1SKR TM84TFR -19
132315 -17 1072  YB1SKR R6DBT KN94
151500  +6 2655  YB1SKR DL1R JN58
151500 -15 1420  YB1SKR RU3QR -17 (x2)
151530 -13 1609  YB1SKR RW9WC LO74
151630 -12 1420  YB1SKR RU3QR -17
151630  +5 2656  YB1SKR DL1R JN58 (x2)
151730 -20 1420  YB1SKR RU3QR -17 (x4)
40m 
UTC    dB Audio  Message
180030  +2  627  YB1SKR II3WWA -15 (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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