YL3OI — FT8 activity observed at SO8OO

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. 83 FT8 messages attributed to this token as transmitter, on 80m, 40m, 10m, across 11 UTC dates in the available aggregate history. Observed between 2026-07-27 and 2026-09-20.

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 83 FT8 messages attributed to YL3OI as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (49%), followed by 40 m (34%) and 10 m (17%). Most decodes (89%) 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 (88%); the estimated median was +12 dB.

Overview

83
Messages attributed
11
UTC dates decoded
23
Active 15-min windows
+12 dB
Estimated median S/N

Bands

80m · 41 40m · 28 10m · 14
First attributed message: 2026-07-27
Last attributed message: 2026-09-20 18:48 UTC

Observed FT8 message patterns

Attributed sample
83 messages
Active dates
11 UTC dates
Estimated median S/N
+12 dB
Estimated 10th-90th percentile
-10 to +20 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 10, strong (≥ -8 dB) 73.

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 · 24 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
760 km (approx.)
Last such locator decoded
2026-09-20 18:48 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
09-20 17:20 40m +16 / - HK5Z - / - 4 Partial capture
09-19 20:14 40m +18 / - M7PTJ - / 0 2 ✓ Closing fragment
09-19 20:13 40m +17 / - TN8GD - / -18 3 Partial capture
09-19 19:31 80m +18 / - II9IAGM - / +3 4 Partial capture
09-14 20:24 80m +12 / - SP5DFK -6 / -11 5 ✓ Full exchange observed
09-14 20:23 80m +12 / - VE7RVT - / - 2 Partial capture
09-10 18:59 80m +15 / -8 A41DV -24 / -16 5 ✓ Full exchange observed
09-06 18:48 40m +11 / - BD7OH - / -12 2 ✓ Closing fragment
09-06 18:47 40m +17 / - MW9LQA -7 / -13 4 ✓ Full exchange observed
09-06 18:35 80m +22 / - YL2NX +2 / - 4 ✓ Full exchange observed
09-05 19:34 80m +15 / - ON6DL -15 / -7 2 Partial capture
09-05 19:33 80m +18 / -4 EA3EDU -13 / -13 4 ✓ Full exchange observed
09-05 19:33 80m +18 / - DO6NC/P -10 / -10 4 ✓ Closing observed
09-05 19:31 80m +8 / - BA5AN - / -14 2 ✓ Closing fragment
09-05 19:31 80m +17 / +3 OK1SI +17 / - 7 ✓ Full exchange observed
09-05 19:30 80m - / - UA4FKT +13 / - 2 Partial capture
09-05 19:29 80m - / - EA3EDU -8 / - 3 Partial capture
09-05 19:29 80m +16 / - OH4KRN -6 / - 5 ✓ Full exchange observed
09-05 19:25 80m +16 / - 9J2FI - / -21 7 ✓ Closing fragment
09-04 16:02 10m -6 / - UX2SB - / +8 2 ✓ Closing fragment
09-04 15:59 10m +1 / - DN9MDS - / -10 3 ✓ Closing fragment
09-04 15:58 10m +2 / - DL7UKM - / - 2 ✓ Closing fragment
09-04 15:54 10m +1 / - DN9OY - / +1 2 ✓ Closing fragment
09-04 15:53 10m +2 / - DL2VER - / - 2 ✓ Closing fragment
08-31 15:50 80m +6 / - <...> - / -7 4 Partial capture
08-09 07:08 40m -6 / - KP2B - / -23 2 Partial capture
08-09 07:01 40m -10 / - KP2B - / -12 2 Partial capture
07-27 19:18 40m -12 / - Z62NS - / +4 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
202300 +12 2415  VE7RVT YL3OI KO26 (x2)
202415  -8 2411  YL3OI SP5DFK JO82
202430 +13 2464  SP5DFK YL3OI -11
202445  -5 2412  YL3OI SP5DFK R+14
202500 +11 2464  SP5DFK YL3OI RR73
202515  -4 2460  YL3OI SP5DFK 73
190445  +4  280  DS4HWA YL3OI KO26
193100 +18  429  II9IAGM YL3OI KO26 (x3)
193245  +4 1309  YL3OI DM0CRACY +03
193300 +18  429  II9IAGM YL3OI R+03
184400 +20 2606  HB0CC YL3OI KO26 (x2)
40m 
UTC    dB Audio  Message
184730  -6  578  YL3OI MW9LQA R+12
184745 +16 2865  MW9LQA YL3OI RR73
184800  -8  578  YL3OI MW9LQA 73
184815 +11 2865  BD7OH YL3OI R-12 (x2)
191645  +3 2502  TN8GD YL3OI KO26 (x4)
201445 +19  325  M7PTJ YL3OI +00 (x2)
172030 +16 2908  HK5Z YL3OI KO26 (x4)
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.

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