ON4KVI — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Belgium Most frequent locator attributed to this token: JO20

Receiver-side FT8 activity involving ON4KVI, decoded by SO8OO in southeastern Poland. 109 FT8 messages attributed to this token as transmitter, on 40m, 10m, across 16 UTC dates in the available aggregate history. Observed between 2026-07-20 and 2026-09-07.

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 109 FT8 messages attributed to ON4KVI as the transmitting token by decoded message structure across 16 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (57%), followed by 10 m (43%). Most decodes (69%) fell within the six-hour window 06:00-12:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (66%); the estimated median was -7 dB.

Overview

109

Messages attributed

UTC dates decoded

Active 15-min windows

-7 dB

Estimated median S/N

Bands

40m · 62 10m · 47

First attributed message: 2026-07-20
Last attributed message: 2026-09-07 06:35 UTC

Observed FT8 message patterns

Attributed sample: 109 messages
Active dates: 16 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -12 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 32, strong (≥ -8 dB) 72.

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 ON4KVI in decoded directed-looking exchanges:

SP5ROM · Poland EA1A · Spain DH3CW · Fed. Rep. of Germany HA1ZW · Hungary OH3OJ · Finland E75FM · Bosnia-Herzegovina OH6FSO · Finland F5PBG · France OK1UOZ · Czech Republic F5MYK · France M6DPS · England LA3LUA · Norway

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 ON4KVI

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: JO20 · 75 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,194 km (approx.)
Last such locator decoded: 2026-09-07 06:34 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	ON4KVI S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-07 06:34	40m	-3 / -	MW7TTA	- / -2	3	✓ Closing fragment
09-07 06:31	40m	-7 / -	PD3PAM	- / -	5	Partial capture
09-07 06:22	40m	-3 / -	E75FM	-19 / -2	4	✓ Closing observed
09-07 06:18	40m	-1 / -	K1JLB	- / -	5	Partial capture
09-07 06:18	40m	- / -5	SO100PKP	+10 / -	2	Partial capture
09-07 06:16	40m	-2 / -	SP5DFK/QRP	- / -	2	Partial capture
09-07 06:07	40m	-4 / -	KY4WI	- / -12	4	✓ Closing fragment
09-06 07:58	40m	-4 / -	KO3ZDE	- / -	4	Partial capture
09-06 07:54	40m	-8 / -	M6WRB	- / -	4	Partial capture
09-06 07:41	40m	-7 / -	F5MYK	- / -4	3	✓ Closing fragment
09-05 07:08	40m	-5 / -6	OV6ZM	-8 / +1	5	✓ Full exchange observed
09-04 08:27	40m	-7 / -	G8ANJ	- / -11	3	✓ Closing fragment
09-03 18:55	40m	0 / -	SQ9DJQ	- / -14	3	Partial capture
09-02 09:55	40m	-22 / -	DH3CW	-3 / -	2	✓ Closing observed
09-01 10:54	40m	- / -3	DM1MT	-18 / -	2	Partial capture
08-20 14:50	10m	-10 / -	OK1UOZ	- / -1	2	✓ Closing fragment
08-20 09:42	40m	-12 / -	PA3CGU	- / -	2	Partial capture
08-20 09:36	40m	- / -9	SP5ROM	-14 / -	2	✓ Closing fragment
08-18 19:27	40m	- / -	9A1CCB	-2 / -	3	Partial capture
08-10 09:47	10m	-10 / -	EX7CQ	- / -	2	Partial capture
08-10 09:37	10m	-7 / -	HG5OGI	- / -	2	Partial capture
08-07 17:17	10m	-7 / -	CS7AVD	- / -	2	Partial capture
08-07 17:13	10m	-8 / -	CS7AVD	- / -	2	Partial capture
08-07 17:00	10m	-8 / -	5B4AMM	- / -	7	Partial capture
08-07 16:41	10m	-6 / -	OM0AFM	- / -	2	Partial capture
08-07 08:39	10m	- / -4	LZ1JZ	-16 / -	2	Partial capture
08-05 20:29	40m	- / -	F5PBG	-12 / -	2	✓ Closing fragment
08-05 20:27	40m	-8 / -	MW9LQA	- / -1	2	Partial capture
08-05 20:23	40m	-10 / -	CR5VP	- / -5	2	Partial capture
08-01 13:26	10m	-11 / -	EU6AX	- / -	3	Partial capture
08-01 11:34	10m	- / -7	EA1A	-12 / -	2	✓ Closing fragment
07-26 14:52	10m	-8 / -	OE6HTG	- / -	4	Partial capture
07-25 11:21	10m	0 / -	G3RWF	- / -	2	Partial capture
07-25 11:17	10m	-5 / -	OH7FQH	- / -9	3	✓ Closing fragment
07-25 10:14	10m	-3 / -	UD8D/M	- / -	8	Partial capture
07-24 11:16	10m	- / -9	LA3LUA	+1 / -	3	✓ Closing fragment
07-24 11:16	10m	- / -	SM2LIY	-9 / -	5	Partial capture
07-24 08:59	10m	- / -10	UA6HGM	-8 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
061915  +0  398  K1JLB ON4KVI JO20 (x3)
062215  -1  398  E75FM ON4KVI JO20 (x2)
062300 -19 3129  ON4KVI E75FM RR73
062315  -2  398  E75FM ON4KVI 73
063130  -9  398  PD3PAM ON4KVI JO20 (x5)
063445  -3  398  MW7TTA ON4KVI JO20 (x3)

10m

UTC    dB Audio  Message
170345 -10  468  5B4AMM ON4KVI JO20 (x3)
171330  -4  467  CS7AVD ON4KVI JO20 (x4)
093745  -8  465  HG5OGI ON4KVI JO20 (x2)
094100 -10  466  OH6FSO ON4KVI 73
094345 -10  466  EA5QS ON4KVI JO20
094715 -11  466  EX7CQ ON4KVI JO20 (x2)
145045 -10  631  OK1UOZ ON4KVI R-01 (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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