ON7SX — 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: JO20

Receiver-side FT8 activity involving ON7SX, decoded by SO8OO in southeastern Poland. 85 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 12 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-09-03.

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 85 FT8 messages attributed to ON7SX as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (89%), followed by 10 m (6%) and 40 m (5%). Most decodes (98%) fell within the six-hour window 08:00-14:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

40m · 4 20m · 76 10m · 5

First attributed message: 2026-06-12
Last attributed message: 2026-09-03 09:42 UTC

Observed FT8 message patterns

Attributed sample: 85 messages
Active dates: 12 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -20 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 15, moderate (-15 to -9 dB) 33, strong (≥ -8 dB) 37.

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 ON7SX in decoded directed-looking exchanges:

9A3TGY · Croatia AO5FSB · Spain DB0IPA · Fed. Rep. of Germany EI5HV · Ireland IW2DNI · Italy IW5DNZ · Italy LA8OKA · Norway LY5G · Lithuania OE6TNO · Austria PD3LKN · Netherlands S57NTR/P · Slovenia TA1EVR · European Turkey

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 ON7SX

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 · 47 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,194 km (approx.)
Last such locator decoded: 2026-09-03 09:42 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	ON7SX S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-03 09:42	40m	-22 / -	G0VSK	- / -	2	Partial capture
09-03 09:39	40m	-10 / -	F6FHZ	- / -	2	✓ Closing fragment
09-03 09:38	40m	- / -	SP9UPH	+1 / -	2	Partial capture
08-30 11:35	20m	- / -16	EI5HV	-10 / -	2	✓ Closing fragment
08-30 11:15	20m	-9 / -	TK/DJ0TP	- / -	3	Partial capture
08-30 11:08	20m	-2 / -	TK/DJ0TP	- / -	2	Partial capture
08-30 11:07	20m	-2 / -	DB0IPA	- / -24	2	✓ Closing fragment
08-30 11:02	20m	-4 / -	SP9SIR	- / -	2	Partial capture
08-30 11:00	20m	-6 / -	AO5FSB	- / -1	5	✓ Closing fragment
08-30 10:52	20m	-3 / -	SP8S/P	- / -14	3	Partial capture
08-30 10:49	20m	-4 / -	TF5B	- / -8	5	Partial capture
08-30 10:47	20m	-4 / -	SP8S/P	- / -	4	Partial capture
08-23 09:30	20m	-9 / -	TA1EVR	- / -23	4	✓ Closing fragment
08-23 09:26	20m	-13 / -	UA4POO	- / -	3	Partial capture
08-23 09:25	20m	-14 / -	ZV8R	- / -	2	Partial capture
08-16 09:54	20m	- / -5	LA8OKA	-12 / -	2	✓ Closing fragment
08-09 10:09	20m	- / -	OE6TNO	-8 / -	3	✓ Closing fragment
08-09 09:12	20m	- / -20	DF3IS	-20 / -	4	Partial capture
08-09 08:30	20m	- / -	ON8WI	-11 / -	7	Partial capture
08-09 08:21	20m	- / -5	IW2DNI	-10 / -	3	✓ Closing fragment
08-02 10:49	20m	-12 / -	AA1EF	- / -21	2	Partial capture
08-02 10:47	20m	-14 / -	S57NTR/P	- / -11	2	✓ Closing fragment
08-02 10:43	20m	-10 / -	9A3TGY	- / -	2	Partial capture
08-02 08:35	20m	-9 / -	OS9T	- / -5	6	Partial capture
08-02 08:31	20m	-14 / -	PD3LKN	-6 / +1	10	✓ Closing observed
08-02 08:26	20m	- / -7	IW5DNZ	-2 / -	3	✓ Closing fragment
08-02 08:18	20m	- / -	IW5DNZ	+13 / -	6	Partial capture
08-02 08:12	20m	- / -10	F4MAK	-18 / -	2	Partial capture
07-31 10:27	20m	-14 / -	IW2EPE/P	- / -	2	Partial capture
07-31 10:25	20m	-14 / -	<...>	- / -	2	Partial capture
07-31 10:19	20m	0 / -	9A3TGY	- / -6	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
093600 +10 1044  ON7SX SQ100PKP -02
093630  +9 1044  ON7SX RR73; DL6BAD <...> -06
093800  +0 2124  ON7SX SP9UPH JO90 (x2)
093915 -11  413  F6FHZ ON7SX RR73
093930  -5 2313  ON7SX SP7ROM JO91
093945 -10  413  F6FHZ ON7SX RR73
094200 -22 1742  G0VSK ON7SX JO20 (x2)

20m

UTC    dB Audio  Message
110145 -12 1368  AO5FSB ON7SX R-01 (x2)
110245  -8 1368  SP9SIR ON7SX JO20 (x2)
110715  -1 1367  DB0IPA ON7SX R-24 (x2)
110815  +0 1368  TK/DJ0TP ON7SX JO20 (x4)
111645  +2 1293  ON7SX GB64MOD -02
111700 -13 1368  TK/DJ0TP ON7SX R+16
112600 -14 1367  AA3B ON7SX JO20
113515 -11 2580  ON7SX EI5HV -16 (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.

CW

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

Explore CW reception at SO8OO

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