ON4TO — 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: Belgium Most frequent locator attributed to this token: JO11

Receiver-side FT8 activity involving ON4TO, decoded by SO8OO in southeastern Poland. 68 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-18 and 2026-09-06.

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 68 FT8 messages attributed to ON4TO as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (47%), followed by 40 m (31%) and 10 m (22%). Most decodes (71%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (74%); the estimated median was -2 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-2 dB

Estimated median S/N

Bands

40m · 21 20m · 32 10m · 15

First attributed message: 2026-08-18
Last attributed message: 2026-09-06 19:57 UTC

Observed FT8 message patterns

Attributed sample: 68 messages
Active dates: 4 UTC dates
Estimated median S/N: -2 dB
Estimated 10th-90th percentile: -16 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 9, moderate (-15 to -9 dB) 9, strong (≥ -8 dB) 50.

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 ON4TO in decoded directed-looking exchanges:

EW8DU · Belarus ×2 3B9FR · Rodriguez Island LU2EI · Argentina PY7ZZ · Brazil ZS6MGM · South Africa OH6DHM · Finland R2AL · European Russia RI1FJL · Franz Josef Land YO6LM · Romania

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 ON4TO

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: JO11 · 35 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,331 km (approx.)
Last such locator decoded: 2026-09-06 19:57 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	ON4TO S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-06 19:55	40m	-3 / -	Z68BR	- / -	5	Partial capture
08-31 21:30	40m	-2 / -	RI1FJL	- / -17	2	Partial capture
08-31 20:41	40m	-1 / -	RI1FJL	- / -15	11	Partial capture
08-31 20:36	40m	+8 / -	RI1FJL	- / -	3	Partial capture
08-26 08:10	20m	+19 / -	RI1FJL	- / -1	4	✓ Closing fragment
08-18 15:35	10m	-14 / -	LU2EI	- / -	4	✓ Closing fragment
08-18 15:23	10m	-18 / -	3B9FR	- / -18	4	✓ Closing fragment
08-18 15:21	10m	-17 / -	PY7ZZ	- / -11	3	✓ Closing fragment
08-18 15:15	10m	-11 / -	ZS6MGM	- / +1	2	✓ Closing fragment
08-18 14:38	20m	-7 / -	OH6DHM	- / +4	3	✓ Closing fragment
08-18 14:33	20m	-1 / -8	R2AL	0 / +3	5	✓ Full exchange observed
08-18 14:29	20m	0 / -	UX7QV	- / -1	3	Partial capture
08-18 14:26	20m	0 / -	R3KJF	- / -16	2	Partial capture
08-18 14:25	20m	+2 / -	SQ8LSB	- / -3	2	Partial capture
08-18 14:21	20m	-2 / -	EW8DU	- / -14	3	Partial capture
08-18 14:20	20m	-8 / -	YO6LM	- / +3	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
204315  -1 1974  RI1FJL ON4TO JO11 (x10)
195515  -4 1032  Z68BR ON4TO JO11 (x5)

20m

UTC    dB Audio  Message
143330  -3 2015  R2AL ON4TO +03
143345  -1 1004  ON4TO R2AL R-08
143400  +1 2015  R2AL ON4TO RRR
143415  -5 1004  ON4TO R2AL 73
143600  -1 2012  SV5BYP ON4TO JO11
143800  -1 2010  CQ ON4TO JO11
143830  -8 2010  OH6DHM ON4TO +04 (x3)
144000 -12 2009  CQ ON4TO JO11 (x2)
081045 +17 1095  RI1FJL ON4TO JO11 (x4)

10m

UTC    dB Audio  Message
151245 -19 1999  <...> ON4TO R+08
151545 -10 2002  ZS6MGM ON4TO R+01 (x2)
152130 -21 2029  PY7ZZ ON4TO JO11 (x3)
152300 -18 2033  3B9FR ON4TO JO11 (x4)
153515 -11 1053  LU2EI ON4TO JO11 (x4)
153915 -16 1059  9A4ZM ON4TO RRR

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

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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