ON5LW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Belgium Most frequent locator attributed to this token: JO21

Receiver-side FT8 activity involving ON5LW, decoded by SO8OO in southeastern Poland. 1,846 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 18 UTC dates in the available aggregate history. Observed between 2026-06-15 and 2026-09-29.

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 1,846 FT8 messages attributed to ON5LW as the transmitting token by decoded message structure across 18 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (63%), followed by 60 m (24%) and 20 m (7%). Most decodes (65%) fell within the six-hour window 20:00-02:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (75%); the estimated median was -0.2 dB.

Overview

1,846
Messages attributed
18
UTC dates decoded
123
Active 15-min windows
-0.2 dB
Estimated median S/N

Bands

80m · 94 60m · 451 40m · 1,165 20m · 136
First attributed message: 2026-06-15
Last attributed message: 2026-09-29 03:37 UTC

Observed FT8 message patterns

Attributed sample
1,846 messages
Active dates
18 UTC dates
Estimated median S/N
-0.2 dB
Estimated 10th-90th percentile
-13 to +8.1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 113, moderate (-15 to -9 dB) 355, strong (≥ -8 dB) 1,378.

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 ON5LW 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 ON5LW

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
JO21 · 1,100 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,192 km (approx.)
Last such locator decoded
2026-09-29 03:37 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 UTCBandON5LW S/NCounterpartCounterpart S/NMsgsCapture
09-29 03:28 40m +9 / - KY2J - / -5 5 ✓ Closing fragment
09-29 03:27 40m +6 / - YO6GLT - / +5 2 ✓ Closing fragment
09-29 03:25 40m +2 / - EU7A - / -2 2 ✓ Closing fragment
09-29 03:21 40m -2 / -6 R6LE 0 / -1 5 ✓ Full exchange observed
09-29 03:19 40m +1 / - LZ3AI - / -17 2 ✓ Closing fragment
09-29 03:17 40m +8 / -2 RZ6L +11 / - 5 ✓ Full exchange observed
09-29 03:13 40m -2 / - W9GNW - / -19 3 ✓ Closing fragment
09-29 02:50 40m - / -14 OD5KU +2 / - 2 Partial capture
09-29 02:18 40m -14 / - RL3T - / +4 2 ✓ Closing fragment
09-29 01:56 40m -13 / -13 RQ6B -16 / -3 7 ✓ Full exchange observed
09-29 01:51 40m +2 / - KC4WQ - / -9 7 ✓ Closing fragment
09-29 01:47 40m +6 / - KE2HPS - / -6 4 ✓ Closing fragment
09-29 01:46 40m +4 / - HK4EGW - / 0 2 ✓ Closing fragment
09-29 01:43 40m +5 / - HK3AQJ - / -18 2 ✓ Closing fragment
09-29 01:39 40m +2 / - W2GCM - / -9 2 ✓ Closing fragment
09-29 01:36 40m -9 / - R4CHQ - / -12 3 ✓ Closing fragment
09-29 01:32 40m +2 / - WP4OWI - / -12 2 ✓ Closing fragment
09-29 01:29 40m +2 / - EA8DSY - / -19 6 ✓ Closing fragment
09-29 01:25 40m -2 / -8 K3UT -13 / -3 3 ✓ Full exchange observed
09-29 01:23 40m 0 / - EA5JTT - / -15 2 ✓ Closing fragment
09-29 01:16 40m +6 / - UK8FCM - / -3 2 ✓ Closing fragment
09-29 01:11 40m +6 / - KQ5I - / -14 3 ✓ Closing fragment
09-29 01:09 40m +2 / - KD8VYT - / -9 3 ✓ Closing fragment
09-29 01:03 40m -3 / - AF3G - / -16 2 ✓ Closing fragment
09-29 01:00 40m -1 / - KN4CKD - / -19 3 ✓ Closing fragment
09-29 00:52 40m +4 / - KR4KOI - / -13 4 ✓ Closing fragment
09-29 00:47 40m -9 / -16 K3MEC -19 / -9 4 ✓ Full exchange observed
09-29 00:41 40m +4 / - HK4QXX -20 / -7 3 ✓ Closing observed
09-29 00:37 40m +3 / -14 K1VK -13 / -6 7 ✓ Full exchange observed
09-29 00:29 40m +2 / -2 KP4KGP -16 / -7 5 ✓ Full exchange observed
09-29 00:22 40m 0 / - UA4CCH - / -8 2 ✓ Closing fragment
09-29 00:15 40m +2 / - KC9NEA - / -12 8 Partial capture
09-29 00:13 40m +2 / - N0IMJ - / -20 3 ✓ Closing fragment
09-29 00:10 40m +1 / - EA8DSY - / -25 3 ✓ Closing fragment
09-29 00:07 40m +2 / - SP5PSM - / -25 2 ✓ Closing fragment
09-29 00:01 40m +4 / - 5Z4VJ - / -3 8 Partial capture
09-28 23:59 40m 0 / - KC3VBE - / -25 4 ✓ Closing fragment
09-28 23:53 40m +2 / -10 RX9WM -11 / -8 5 ✓ Full exchange observed
09-28 23:49 40m +4 / - K3UCQ - / -19 9 Partial capture
09-28 23:47 40m +2 / - EA5TC - / -14 2 ✓ Closing fragment
09-28 23:46 40m - / - RX9WM -12 / - 2 Partial capture
09-28 23:43 40m +2 / - VE3RRN - / -25 8 ✓ Closing fragment
09-28 23:41 40m +5 / - WB3FBR - / -10 2 ✓ Closing fragment
09-28 23:39 40m +5 / -12 OD5ZZ -19 / -9 3 ✓ Full exchange observed
09-28 23:37 40m -2 / - SP5MIG - / 0 2 ✓ Closing fragment
09-28 23:35 40m +5 / - YT3IN - / -5 2 ✓ Closing fragment
09-28 23:30 40m +1 / -10 W0YVA -2 / - 5 ✓ Full exchange observed
09-28 23:28 40m +3 / - NJ2RQ - / -13 3 ✓ Closing fragment
09-28 23:27 40m -2 / - KE2AA - / -15 2 ✓ Closing fragment
09-28 23:24 40m +2 / -17 SP5EXA -11 / +9 6 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
033030 +11 1334  KY2J ON5LW RR73
033100  +6 1334  CQ ON5LW JO21 (x14)
60m 
UTC    dB Audio  Message
013830  -2 1685  CQ ON5LW JO21 (x5)
014045 -10 1489  ON5LW DL1UDO JO31
014100  -6 1685  CQ ON5LW JO21
014115  -1 1489  ON5LW DL1UDO JO31
014130  -4 1685  CQ ON5LW JO21
014145 -17 1489  ON5LW DL1UDO JO31
014200  -6 1685  CQ ON5LW JO21 (x4)
020415  +4 1195  Z62NS ON5LW JO21
80m 
UTC    dB Audio  Message
015215  -5 1013  ON5LW DO8JB R-13 (x2)
015315  -8 1230  ON5LW DL1UDO JO31 (x2)
015400 -22 1014  DL1UDO ON5LW RR73
015415  -7 1230  ON5LW DL1UDO 73
015430 -15 1013  CQ ON5LW JO21 (x4)
015615  -1 1014  ON5LW DO5PY JN49 (x5)
20m 
UTC    dB Audio  Message
193600  -4 1508  SP6ZLT ON5LW RR73
193730  +1 1508  IZ4EFV ON5LW -14
193830  +0 1508  JE1LFX ON5LW RR73
193900  -5 1509  CQ ON5LW JO21 (x2)
194015  -6  880  ON5LW G8IXM JO02 (x2)
194130  -3 1508  CQ ON5LW JO21
194145  -4  881  ON5LW G8IXM JO02
194200  -4 1508  CQ ON5LW JO21
194230  +2 1508  CT1END/P ON5LW -17 (x2)
194400  +1 1508  PY2PM ON5LW RR73
194500  -3 1508  WA2EIO ON5LW -19 (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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