ON4WV — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving ON4WV, decoded by SO8OO in southeastern Poland. 130 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 15 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-08-10.

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 130 FT8 messages attributed to ON4WV as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (67%), followed by 20 m (33%). Most decodes (92%) fell within the six-hour window 12:00-18:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

130
Messages attributed
15
UTC dates decoded
32
Active 15-min windows
-10 dB
Estimated median S/N

Bands

20m · 43 10m · 87
First attributed message: 2026-06-12
Last attributed message: 2026-08-10 13:13 UTC

Observed FT8 message patterns

Attributed sample
130 messages
Active dates
15 UTC dates
Estimated median S/N
-10 dB
Estimated 10th-90th percentile
-17 to +1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, moderate (-15 to -9 dB) 59, strong (≥ -8 dB) 53.

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 ON4WV 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 ON4WV

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 · 94 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,192 km (approx.)
Last such locator decoded
2026-08-10 13:13 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 UTCBandON4WV S/NCounterpartCounterpart S/NMsgsCapture
08-29 14:23 20m - / -17 SV5BYP -12 / - 4 ✓ Closing fragment
08-03 17:51 20m - / -10 RU3QR -18 / - 9 Partial capture
07-28 17:24 20m - / -16 F1ODM +7 / - 5 Partial capture
07-28 17:23 20m -5 / - BI4XDT -10 / - 2 ✓ Closing observed
07-24 14:48 10m -11 / - YO4FZV - / -20 2 ✓ Closing fragment
07-24 14:42 10m -8 / - DO9BAU - / +6 2 ✓ Closing fragment
07-24 14:41 10m -7 / - DG6TOM +2 / +3 3 Partial capture
07-23 14:39 10m - / - UA4FKT -12 / - 2 Partial capture
07-22 17:26 20m -8 / - HB9ZHK - / - 2 Partial capture
07-20 17:36 20m - / -7 M7WFZ -16 / - 2 ✓ Closing fragment
07-20 17:29 20m - / -24 RZ4FWA -18 / - 2 Partial capture
07-20 16:57 20m -10 / - G6UJJ - / -12 2 ✓ Closing fragment
07-20 16:50 20m -12 / - JY5CG - / - 3 Partial capture
07-20 16:39 20m -13 / - OH1LA - / -9 2 ✓ Closing fragment
07-20 16:32 20m -9 / - BG7BMG - / -24 2 ✓ Closing fragment
07-20 16:29 20m -16 / - EX8BT - / - 2 Partial capture
07-20 14:20 20m -19 / - LA8OOA - / -11 2 ✓ Closing fragment
07-07 18:18 10m -22 / - PY4ZO - / - 2 Partial capture
07-07 18:16 10m -22 / - SP5BB - / - 2 ✓ Closing fragment
07-07 14:17 10m -8 / - EA1GTX - / - 2 Partial capture
07-06 15:04 10m -11 / - LZ2RR - / - 3 Partial capture
06-29 12:51 10m -2 / - EB5R - / -7 2 ✓ Closing fragment
06-29 12:46 10m 0 / -1 F6EXV -12 / - 4 ✓ Full exchange observed
06-29 12:43 10m +2 / - DO1MKO - / +6 2 ✓ Closing fragment
06-29 12:40 10m 0 / - DL9KM - / +8 2 ✓ Closing fragment
06-29 12:39 10m +2 / - OZ5AGJ - / - 2 ✓ Closing fragment
06-27 16:31 10m -8 / - CS7BGI - / +5 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
171715  -2 2671  ON4WV DL1R JN58
171945 -24 1975  ON4WV JA0LFV RR73
175100 -20 1816  ON4WV RU3QR -10 (x9)
142345  -4 1908  ON4WV SV5BYP KM46 (x4)
10m 
UTC    dB Audio  Message
144800 -12 2371  YO4FZV ON4WV -20 (x2)
144900 -15 2371  CQ ON4WV JO21 (x2)
145700 -13 2284  OK1VM ON4WV JO21
152100 -17 2340  CQ ON4WV JO21                         a1
152230 -15 2340  GM5RDX ON4WV -10
153200  -9 2459  CQ ON4WV JO21 (x5)
162400  -9 2709  SQ9BPV ON4WV RR73
131300 -10 2734  CQ ON4WV JO21 (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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