YL3OI — 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: Latvia Most frequent locator attributed to this token: KO26

Receiver-side FT8 activity involving YL3OI, decoded by SO8OO in southeastern Poland. 481 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 10m, across 35 UTC dates in the available aggregate history. Observed between 2026-07-27 and 2026-11-06.

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 481 FT8 messages attributed to YL3OI as the transmitting token by decoded message structure across 35 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (81%), followed by 40 m (13%) and 60 m (4%). Most decodes (67%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (86%); the estimated median was +2.3 dB.

Overview

481
Messages attributed
35
UTC dates decoded
90
Active 15-min windows
+2.3 dB
Estimated median S/N

Bands

80m · 388 60m · 18 40m · 61 10m · 14
First attributed message: 2026-07-27
Last attributed message: 2026-11-06 06:54 UTC

Observed FT8 message patterns

Attributed sample
481 messages
Active dates
35 UTC dates
Estimated median S/N
+2.3 dB
Estimated 10th-90th percentile
-10 to +18 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 54, strong (≥ -8 dB) 414.

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 YL3OI 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 YL3OI

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
KO26 · 281 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
760 km (approx.)
Last such locator decoded
2026-11-06 06:52 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 UTCBandYL3OI S/NCounterpartCounterpart S/NMsgsCapture
11-06 06:52 80m +4 / - IU2THY +3 / -14 5 Partial capture
11-06 06:52 80m - / - PC2J -4 / - 2 Partial capture
11-06 06:49 80m +2 / - KO1K - / -14 2 Partial capture
11-06 06:44 80m -3 / - K0TT - / -20 2 ✓ Closing fragment
11-04 21:21 80m +23 / - BI4JJO - / -10 2 ✓ Closing fragment
11-04 21:17 80m +22 / - JI4JKO - / -6 2 ✓ Closing fragment
11-04 21:15 80m +20 / - TJ1GD - / -24 2 ✓ Closing fragment
11-04 21:13 80m +16 / -5 9A3AUH +2 / +5 4 ✓ Full exchange observed
11-04 21:09 80m +17 / - EA7CRB - / -15 3 Partial capture
11-04 20:22 80m +19 / - TR8CA - / -16 5 Partial capture
11-02 20:38 80m +9 / -11 JE6AVT -17 / - 3 ✓ Closing observed
10-31 22:23 80m +17 / - 9X5KM - / -14 3 ✓ Closing fragment
10-31 22:21 80m +18 / - A92AE -10 / -2 5 ✓ Closing observed
10-30 15:59 40m +5 / - 4O4A - / - 3 Partial capture
10-30 15:08 40m - / - RX9WM -6 / - 2 Partial capture
10-30 15:04 40m +4 / - EX8ABR - / -6 4 Partial capture
10-28 15:01 80m -4 / - XX9TXN - / - 12 Partial capture
10-27 16:27 80m -20 / - XX9TXN - / - 2 Partial capture
10-27 16:23 80m -10 / - XX9TXN - / - 2 Partial capture
10-27 15:36 80m -10 / - XX9TXN - / - 7 Partial capture
10-27 15:06 80m +1 / - XX9TXN - / - 3 Partial capture
10-27 14:35 80m -4 / - XX9TXN - / - 3 Partial capture
10-27 13:57 40m +2 / - K2AK - / - 2 Partial capture
10-27 13:54 40m +4 / - BD8ALS - / -11 2 Partial capture
10-27 13:54 40m - / -15 RN6MA -1 / - 3 Partial capture
10-27 12:54 40m +1 / - VR2ZXP - / - 2 Partial capture
10-27 12:14 40m -6 / - 3W9A - / - 2 Partial capture
10-27 06:28 80m -8 / - OE/DL1MKW - / - 5 Partial capture
10-27 06:27 80m -1 / - PA/DK4DAX - / - 2 Partial capture
10-27 06:25 80m 0 / - UA9JTJ/4 - / - 2 Partial capture
10-26 16:16 80m -10 / - XX9TXN - / - 3 Partial capture
10-26 15:52 80m -4 / - XX9TXN - / - 19 Partial capture
10-26 15:45 80m -7 / - XX9TXN - / - 6 Partial capture
10-26 15:40 80m -6 / - XX9TXN - / - 6 Partial capture
10-26 15:18 80m +3 / - XX9TXN - / - 27 Partial capture
10-26 15:15 80m +6 / - XX9TXN - / - 2 Partial capture
10-26 14:55 80m +3 / - XX9TXN - / - 5 Partial capture
10-26 14:31 80m 0 / - XX9TXN - / - 28 Partial capture
10-26 14:26 80m -1 / - XX9TXN - / - 3 Partial capture
10-26 13:57 80m -3 / - XX9TXN - / - 5 Partial capture
10-26 13:43 80m -5 / - XX9TXN - / - 17 Partial capture
10-26 13:34 80m -6 / - XX9TXN - / -19 12 Partial capture
10-26 06:22 80m -1 / - R8LCM/M - / -17 4 Partial capture
10-12 16:25 60m -12 / - H49A - / - 4 Partial capture
10-11 19:08 60m -14 / - H49A - / - 4 Partial capture
10-11 17:42 60m -12 / - H49A - / - 2 Partial capture
10-11 16:08 60m -16 / - H49A - / - 2 Partial capture
10-10 13:45 40m -1 / - EX8MCD - / -3 2 ✓ Closing fragment
10-10 13:44 40m 0 / +9 SQ9JKV -7 / +4 5 ✓ Full exchange observed
10-10 13:42 40m +1 / - EX7CQ - / -2 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
064445  -4 2351  K0TT YL3OI -20 (x2)
064630 -14 2351  YL3OI UA4FKT LO23
064930  +2 2418  KO1K YL3OI -14 (x2)
065130  +3 2459  CQ NA YL3OI KO26 (x3)
065245  -2 2459  YL3OI PC2J JO22
065245  +7 2717  YL3OI IU2THY JN45
065315  -6 2459  YL3OI PC2J JO22
065315  +3 2717  YL3OI IU2THY JN45
065330  +6 2459  IU2THY YL3OI -14
065345  -1 2717  YL3OI IU2THY JN45
065400  +3 2459  IU2THY YL3OI -14
40m 
UTC    dB Audio  Message
135530  +0 2595  YL3OI RN6MA -15
135545  +8 2596  CQ NA YL3OI KO26 (x2)
135715  +7 2596  K2AK YL3OI KO26 (x2)
150415  +3  425  EX8ABR YL3OI KO26 (x4)
150745  -2 2589  CQ YL3OI KO26
150800  -4 2594  YL3OI RX9WM LO74 (x2)
155945  +5 2488  4O4A YL3OI KO26 (x3)
60m 
UTC    dB Audio  Message
174315 -10  279  H49A YL3OI KO26
174700  +3  284  YL3OI IDIOT
183415 -24 2180  H49A YL3OI KO26 (x10)
165245  -1  668  A92AE YL3OI KO26
054815 -12 2596  J88IH YL3OI KO26
055930  -7 2596  ZL2CC YL3OI KO26
10m 
UTC    dB Audio  Message
155300  -1 2694  DL2VER YL3OI +12 (x2)
155400  +2 2694  DN9OY YL3OI +01 (x2)
155730 -13 2563  DN9KB YL3OI RR73
155830  +6 2524  DL7UKM YL3OI +28 (x2)
155930  +3 2525  DN9MDS YL3OI R-10 (x2)
160100  -4 2525  YL2CA YL3OI RR73
160130  -1 2525  DN9MDS YL3OI 73
160200  -3 2525  UX2SB YL3OI +08 (x2)
160330 -14 2525  DN9TB YL3OI RR73

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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