OM3LU — 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: Slovak Republic Most frequent locator attributed to this token: JN88

Receiver-side FT8 activity involving OM3LU, decoded by SO8OO in southeastern Poland. 394 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 17 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-19.

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 394 FT8 messages attributed to OM3LU as the transmitting token by decoded message structure across 17 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (51%), followed by 20 m (49%). Most decodes (92%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

394
Messages attributed
17
UTC dates decoded
42
Active 15-min windows
-7 dB
Estimated median S/N

Bands

First attributed message: 2026-06-07
Last attributed message: 2026-10-19 21:18 UTC

Observed FT8 message patterns

Attributed sample
394 messages
Active dates
17 UTC dates
Estimated median S/N
-7 dB
Estimated 10th-90th percentile
-20 to +7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 90, moderate (-15 to -9 dB) 76, strong (≥ -8 dB) 228.

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.

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 OM3LU

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
JN88 · 118 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
383 km (approx.)
Last such locator decoded
2026-10-19 21:15 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 UTCBandOM3LU S/NCounterpartCounterpart S/NMsgsCapture
10-21 21:38 40m - / -5 G0MGK -12 / - 7 Partial capture
10-21 21:30 40m - / -10 EB5AB +4 / - 3 ✓ Closing fragment
10-21 21:23 40m - / -3 IU8RFW +12 / - 4 ✓ Closing fragment
10-19 21:17 40m -15 / - SP2KW - / -6 4 Partial capture
10-19 21:15 40m - / -16 F1PBZ +6 / - 4 Partial capture
10-19 21:15 40m -11 / - F6ECB -14 / -4 4 ✓ Closing observed
10-19 21:13 40m -13 / - RJ3DC - / +7 2 Partial capture
10-19 21:11 40m -14 / -12 PD7BDN +1 / -14 7 ✓ Full exchange observed
10-19 21:09 40m -17 / - M7RPY - / -7 3 ✓ Closing fragment
10-19 21:08 40m -20 / - EA7KJJ - / -5 2 Partial capture
10-14 20:13 40m - / 0 M0CKX -11 / - 5 ✓ Closing fragment
10-14 20:10 40m - / - M6UCD -22 / - 2 Partial capture
10-13 22:35 40m - / -1 LA1Z -4 / - 3 ✓ Closing fragment
10-13 22:27 40m -12 / - BG5JKZ - / -22 6 ✓ Closing fragment
10-13 22:24 40m -11 / - M7LYG - / -6 4 ✓ Closing fragment
10-13 22:22 40m -12 / - SQ9CXH - / -22 3 Partial capture
10-13 22:18 40m -10 / -14 R3DQB -11 / -9 7 ✓ Full exchange observed
10-13 22:17 40m -8 / - EA3AAY -6 / -10 6 ✓ Closing observed
10-13 22:13 40m -4 / -1 G0BAZ -15 / -16 6 ✓ Full exchange observed
10-13 22:12 40m -10 / - BG4OOO - / -19 2 ✓ Closing fragment
10-13 22:11 40m 0 / - EW2MS - / -9 3 ✓ Closing fragment
10-13 22:08 40m -2 / - HL3LQZ - / -20 2 Partial capture
10-13 22:07 40m -5 / - 2E0MRK - / -9 3 ✓ Closing fragment
10-13 22:07 40m - / - OE1SGS -12 / - 2 Partial capture
10-13 18:21 40m -20 / - DK2NO -6 / +1 5 ✓ Full exchange observed
10-12 21:32 40m - / -15 IZ3ODB -16 / - 4 ✓ Closing fragment
10-12 21:31 40m -20 / - BH4ECL - / -19 3 Partial capture
10-12 21:29 40m -16 / - BI4IWL - / -17 2 ✓ Closing fragment
10-12 21:24 40m -16 / - HS0ZOY - / -12 2 ✓ Closing fragment
10-07 21:31 40m - / -5 MW7RHR -2 / - 3 ✓ Closing fragment
10-07 18:07 40m -16 / - SP5ALV - / - 2 ✓ Closing fragment
10-07 17:59 40m - / -9 DL1TJ -10 / - 2 Partial capture
10-07 17:57 40m - / - IZ4AIF +3 / - 3 ✓ Closing fragment
10-07 17:54 40m - / -1 DL6EL -2 / - 2 ✓ Closing fragment
10-07 17:52 40m - / -10 PD7RH -10 / - 3 ✓ Closing fragment
10-07 17:48 40m - / -13 SP0LPR -13 / - 5 ✓ Closing fragment
10-07 17:43 40m - / - DL6CMF -8 / - 3 ✓ Closing fragment
10-07 17:39 40m - / 0 R6DJR -14 / - 2 Partial capture
10-05 20:13 40m - / -2 K1ZZ -8 / - 2 ✓ Closing fragment
09-30 21:45 40m - / -5 ON1BH +4 / - 2 ✓ Closing fragment
09-30 21:37 40m - / -7 TM47CDXC +2 / - 3 Partial capture
09-26 21:43 40m - / -2 RZ6AKF -12 / - 2 ✓ Closing fragment
09-26 21:28 40m - / -8 F1PBZ -10 / - 3 ✓ Closing fragment
09-17 20:39 40m - / -11 F8FKI +15 / - 8 ✓ Closing fragment
09-17 20:30 40m - / - HB9HRR -7 / - 7 Partial capture
09-17 20:28 40m - / -1 ON1DGN -10 / - 2 ✓ Closing fragment
09-17 20:26 40m - / - DL6UM -13 / - 2 Partial capture
09-17 20:23 40m - / 0 UB3ATT -12 / - 3 ✓ Closing fragment
09-16 21:06 40m - / - G8OO -3 / - 4 Partial capture
09-16 21:01 40m - / - F1JIO -1 / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
212400  +8 2840  OM3LU IU8RFW R-03 (x3)
213000  +5  344  OM3LU EB5AB IM98 (x3)
213330 -11 2360  OM3LU G0MGK IO91 (x8)
213715 -15  778  OM3LU ON1JP +09
20m
UTC    dB Audio  Message
203445 -22 1870  JA8NZB OM3LU RR73
203500  -8 1871  OM3LU JA8NZB 73
203515 -21 1870  JA8NZB OM3LU 73
203545 -24 1870  CQ OM3LU JN88 (x2)
203630  -9 2576  OM3LU TA2CAX KM69
203715 -24 1870  UA0LQE OM3LU RR73 (x2)
203900 -17 1869  OM3LU KP4AA R+02
204215 -24 1870  EA5HM OM3LU +06
183300  -7 2370  OM3LU 5Z4VJ KI88 (x3)
184900  -7 2724  OM3LU M7YGI R+00 (x2)
10m
UTC    dB Audio  Message
131500 -11  655  OM3LU ON1JP -12

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

CW history is temporarily unavailable.

Explore CW reception at SO8OO

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee