SQ8OSI — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: KO11

Receiver-side FT8 activity involving SQ8OSI, decoded by SO8OO in southeastern Poland. 49 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, across 7 UTC dates in the available aggregate history. Observed between 2026-07-28 and 2026-09-20.

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 49 FT8 messages attributed to SQ8OSI as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (49%), followed by 60 m (31%) and 40 m (20%). Most decodes (100%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (80%); the estimated median was 0 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

0 dB

Estimated median S/N

Bands

80m · 24 60m · 15 40m · 10

First attributed message: 2026-07-28
Last attributed message: 2026-09-20 17:42 UTC

Observed FT8 message patterns

Attributed sample: 49 messages
Active dates: 7 UTC dates
Estimated median S/N: 0 dB
Estimated 10th-90th percentile: -10 to +14 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 9, strong (≥ -8 dB) 39.

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 SQ8OSI in decoded directed-looking exchanges:

9A3TGY · Croatia ×2 DO5HOK · Fed. Rep. of Germany ×2 4O4DB · Montenegro G3WGC · England GM0EEH · Scotland W3FOX · United States HA5KN · Hungary OE8YXK · Austria ON6SAT · Belgium PA2WDR · Netherlands PG4T · Netherlands R5AV · European Russia

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 SQ8OSI

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: KO11 · 23 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 193 km (approx.)
Last such locator decoded: 2026-09-20 17:42 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	SQ8OSI S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 17:42	80m	-6 / -	EH3ST	- / -	2	Partial capture
09-20 17:39	80m	+14 / -	9A3TGY	-5 / -16	4	✓ Closing observed
08-22 17:36	40m	+3 / -3	ON6SAT	-3 / -3	4	✓ Full exchange observed
08-20 19:07	80m	+2 / -	D2UY	- / -	8	Partial capture
08-16 18:24	80m	+7 / -3	HA8TJP	+12 / +1	5	✓ Full exchange observed
08-16 17:55	80m	+14 / -5	HA1ZN	+3 / -15	5	✓ Full exchange observed
08-16 16:42	60m	-4 / -	DL0MRR	-10 / 0	7	✓ Full exchange observed
08-16 16:42	60m	-10 / 0	LY8O	-6 / +1	5	✓ Full exchange observed
08-16 16:39	60m	+5 / -	OH6FSG	-8 / -8	4	✓ Closing observed
08-14 20:12	20m	- / -19	W3FOX	-19 / -	2	✓ Closing fragment
08-09 18:19	80m	+11 / -18	DO5HOK	+4 / -21	5	✓ Full exchange observed
08-09 18:18	80m	- / -	UA4FKT	+10 / -	2	Partial capture
08-09 18:17	80m	-4 / -14	LY2MM	+5 / -1	4	✓ Full exchange observed
08-02 08:53	40m	- / -	SQ8LE	-12 / -	2	✓ Closing fragment
07-28 21:27	60m	-3 / -10	SM2OTU	-8 / -9	5	✓ Full exchange observed
07-28 21:05	60m	-6 / -2	DD6ZV	-2 / 0	4	✓ Full exchange observed
07-28 20:56	40m	- / -13	OE8YXK	+1 / -	2	✓ Closing fragment
07-28 20:48	40m	-9 / -	F4SNF	- / +5	2	Partial capture
07-28 20:47	40m	-6 / -15	PG4T	-6 / -	3	✓ Closing observed
07-28 20:44	40m	- / -13	PA2WDR	-18 / -	2	✓ Closing fragment
07-28 20:43	40m	- / -	R2AL	-8 / -	3	Partial capture
07-28 18:10	40m	- / +3	HA5KN	-10 / -	3	✓ Closing fragment
07-28 18:09	40m	- / -6	R5AV	-12 / -	2	✓ Closing fragment
07-26 19:13	20m	- / -5	4O4DB	-17 / -	3	✓ Closing fragment
07-26 19:05	20m	- / +1	G3WGC	-9 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
182530 +14 1780  HA8TJP SQ8OSI 73
190715  +0 2276  D2UY SQ8OSI KO11 (x8)
173900 +14  402  9A3TGY SQ8OSI KO11 (x2)
173945  -5  402  SQ8OSI 9A3TGY RR73
174000 +12  402  9A3TGY SQ8OSI 73
174215  -7 1227  EH3ST SQ8OSI KO11 (x2)

40m

UTC    dB Audio  Message
204745  -6  683  PG4T SQ8OSI 73
204845  -9  683  F4SNF SQ8OSI KO11 (x2)
205645  -1  631  SQ8OSI OE8YXK -13 (x2)
085330  -9 2214  SQ8OSI SQ8LE +14 (x2)
183115 -13  559  YL3FW SQ8OSI R-15
135645 -21 1866  SQ8OSI S58MU -01
173645  +1 2516  ON6SAT SQ8OSI KO11
173700  -3  392  SQ8OSI ON6SAT -03
173715  +3  392  ON6SAT SQ8OSI R-03 (x2)
175000 -14 1815  ZS6KBS SQ8OSI KO11
175130 -20 1814  SP5DFK SQ8OSI -19

60m

UTC    dB Audio  Message
164015  +0 2466  OH6FSG SQ8OSI 73
164115  +1 2466  CQ SQ8OSI KO11 (x2)
164200  -5 1833  SQ8OSI LY8O KO25
164200  -8 1233  SQ8OSI DL0MRR JO60
164215 -10 1833  LY8O SQ8OSI +01
164230  -4 1833  SQ8OSI LY8O R+00
164230 -10 1233  SQ8OSI DL0MRR JO60
164245 -10 1833  LY8O SQ8OSI RR73
164300  -9 1833  SQ8OSI LY8O 73
164300 -13 1233  SQ8OSI DL0MRR JO60
164315  -2 1233  DL0MRR SQ8OSI +00
164330  -9 1233  SQ8OSI DL0MRR R+32
164345  -6 1233  DL0MRR SQ8OSI RR73
164400  -8 1233  SQ8OSI DL0MRR 73

20m

UTC    dB Audio  Message
190545 -12  271  SQ8OSI G3WGC JO02 (x3)
191300 -17 2047  SQ8OSI 4O4DB JN92 (x3)
194300 -23 1314  SQ8OSI GM0EEH RR73
201215 -20 1464  SQ8OSI W3FOX -19 (x2)
201500 -17 2510  SQ8OSI IZ4JMA JN54

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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