ON8SL — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Belgium Most frequent locator attributed to this token: JN29

Receiver-side FT8 activity involving ON8SL, decoded by SO8OO in southeastern Poland. 32 FT8 messages attributed to this token as transmitter, on 60m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-19.

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 32 FT8 messages attributed to ON8SL as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (100%). In this small sample, the estimated median decoder S/N was -9 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

60m · 32

First attributed message: 2026-09-19
Last attributed message: 2026-09-19 23:05 UTC

Observed FT8 message patterns

Attributed sample: 32 messages
Active dates: 1 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -12 to -7 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 20, strong (≥ -8 dB) 12.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with ON8SL in decoded directed-looking exchanges:

HA7TM · Hungary 9A4ZM · Croatia DG4BZ · Fed. Rep. of Germany DK7ZT · Fed. Rep. of Germany DL5ASK · Fed. Rep. of Germany DL5DQZ · Fed. Rep. of Germany DL7ACA · Fed. Rep. of Germany F5HNQ · France II8IHBC · Italy LZ2VQ · Bulgaria OK1BN · Czech Republic

Most frequent locator attributed to ON8SL

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: JN29 · 10 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,206 km (approx.)
Last such locator decoded: 2026-09-19 23:04 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	ON8SL S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 23:05	60m	-8 / -4	9A4ZM	+6 / -11	5	✓ Full exchange observed
09-19 23:02	60m	-9 / -2	DL5DQZ	+6 / -	5	✓ Closing observed
09-19 23:00	60m	-11 / -1	DL5ASK	-8 / -8	4	✓ Full exchange observed
09-19 23:00	60m	- / -	PE1NPS	+8 / -	3	Partial capture
09-19 23:00	60m	- / -	DL9KM	-18 / -	4	Partial capture
09-19 22:59	60m	-8 / -4	DK7ZT	-10 / -5	4	✓ Full exchange observed
09-19 22:51	60m	-10 / -16	LZ2VQ	+12 / -16	5	✓ Full exchange observed
09-19 22:48	60m	-8 / -	II8IHBC	-4 / -	2	✓ Closing observed
09-19 22:46	60m	-6 / -12	F5HNQ	-3 / -9	8	✓ Full exchange observed
09-19 22:28	60m	-11 / -	DH0BRO	- / -	3	Partial capture
09-19 22:23	60m	-9 / -22	DH0BRO	+1 / -11	6	Partial capture
09-19 22:22	60m	- / -9	F1PBZ	+3 / -	3	Partial capture
09-19 22:22	60m	- / -	DL5DQZ	+6 / -	20	Partial capture
09-19 22:20	60m	- / -	LZ2VQ	+8 / -	3	Partial capture
09-19 22:18	60m	-9 / -14	DL7ACA	0 / -1	8	✓ Full exchange observed
09-19 22:17	60m	-10 / -5	DG4BZ	-12 / -4	8	✓ Full exchange observed
09-19 22:15	60m	-10 / -10	OK1BN	+11 / +7	4	✓ Full exchange observed
09-17 16:26	40m	- / -	DJ0MAB	-2 / -	2	Partial capture
09-17 15:54	40m	- / -12	HA7TM	+16 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
230115 -13 2577  DL5ASK ON8SL 73
230130 +11  504  ON8SL PE1NPS JO22
230130 -19 2148  ON8SL DL9KM JN68
230145 -12 2578  CQ ON8SL JN29                         a1
230200  +4 2418  ON8SL DL5DQZ JO61 (x2)
230245  -9 2578  DL5DQZ ON8SL RRR
230300  +6 2418  ON8SL DL5DQZ 73 (x2)
230445  -6 2578  CQ ON8SL JN29                         a1
230500  +7 2573  ON8SL 9A4ZM JN86
230515  -6 2578  9A4ZM ON8SL -11
230530  +6 2573  ON8SL 9A4ZM R-04
230545 -10 2578  9A4ZM ON8SL RRR
230600  +6 2573  ON8SL 9A4ZM 73

40m

UTC    dB Audio  Message
155445 +13 2974  ON8SL HA7TM -12 (x2)
162600  -7 2587  ON8SL DJ0MAB JN49 (x2)

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