ON7VN — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving ON7VN, decoded by SO8OO in southeastern Poland. 137 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-13.

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 137 FT8 messages attributed to ON7VN as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (74%), followed by 40 m (20%) and 10 m (4%). Most decodes (66%) 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 (61%); the estimated median was -7 dB.

Overview

137

Messages attributed

UTC dates decoded

Active 15-min windows

-7 dB

Estimated median S/N

Bands

80m · 3 40m · 27 20m · 102 10m · 5

First attributed message: 2026-06-08
Last attributed message: 2026-09-13 04:53 UTC

Observed FT8 message patterns

Attributed sample: 137 messages
Active dates: 8 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -13 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 45, strong (≥ -8 dB) 84.

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 ON7VN in decoded directed-looking exchanges:

SM7TZK · Sweden ×2 BI4XDT · China F1PBZ · France EA5EJG · Spain EU4U · Belarus GM6URC · Scotland

Most frequent locator attributed to ON7VN

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 · 111 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,192 km (approx.)
Last such locator decoded: 2026-09-13 04:44 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 UTC	Band	ON7VN S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-13 04:41	40m	-2 / 0	LY7T	-20 / 0	2	Partial capture
09-13 04:39	40m	-4 / -	EU4U	- / -2	2	✓ Closing fragment
09-13 04:31	40m	-7 / -	EA6BH	- / -	4	Partial capture
09-13 04:27	40m	-2 / -	EA5EJG	- / -7	2	✓ Closing fragment
09-13 04:23	40m	-12 / -	J88IH	- / -	5	Partial capture
09-02 01:54	80m	-23 / -	RI1FJL	- / -	2	Partial capture
09-02 01:49	80m	- / -15	GM6URC	-7 / -	3	✓ Closing fragment
09-02 01:48	80m	-24 / -25	SM7TZK	+2 / -	3	✓ Closing observed
09-02 00:43	40m	-8 / -	CT3IQ	- / -	3	Partial capture
08-21 03:48	40m	- / -	HG8LXL	-13 / -	3	Partial capture
08-21 03:38	40m	- / -15	EA5HM	-13 / -	2	Partial capture
07-20 20:00	20m	-12 / -2	F1PBZ	+6 / -	3	✓ Closing observed
07-20 19:59	20m	- / -11	BI4XDT	-11 / -	3	✓ Closing fragment
07-19 11:58	20m	- / 0	UT7UJ	+1 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
042545 -11 2663  J88IH ON7VN JO21
042615 -11 2707  CQ ON7VN JO21 (x2)
042715  -2 2707  EA5EJG ON7VN -07 (x2)
043130  -5 2707  EA6BH ON7VN JO21 (x4)
043900  -6 2910  EU4U ON7VN R-02 (x2)
044145 -20 1758  ON7VN LY7T +00
044200  -2 2910  LY7T ON7VN R+00
044400  -5 2910  EA6BH ON7VN JO21 (x2)

80m

UTC    dB Audio  Message
014830  +1 1786  ON7VN SM7TZK -25 (x2)
014915 -24 1788  SM7TZK ON7VN 73
014930  -6 1546  ON7VN GM6URC -15 (x3)
015330  +1 1553  ON7VN SM7TZK RR73
015415 -22 2508  RI1FJL ON7VN JO21 (x2)

20m

UTC    dB Audio  Message
115800  +1 2091  ON7VN UT7UJ +00 (x3)
195915 -10  877  ON7VN BI4XDT PM01 (x3)
200045  +8 2828  ON7VN F1PBZ -02 (x2)
200130 -12 3010  F1PBZ ON7VN 73

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.

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