SP3ZAC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO82

Receiver-side FT8 activity involving SP3ZAC, decoded by SO8OO in southeastern Poland. 25 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-08-30.

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 25 FT8 messages attributed to SP3ZAC as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -11 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

40m · 25

First attributed message: 2026-08-30
Last attributed message: 2026-08-30 12:15 UTC

Observed FT8 message patterns

Attributed sample: 25 messages
Active dates: 1 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -13 to -9 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 23, strong (≥ -8 dB) 2.

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 SP3ZAC in decoded directed-looking exchanges:

4O4DB · Montenegro DK4YA · Fed. Rep. of Germany F4JZW · France RN6MA · European Russia 3Z0L · Poland DK2M · Fed. Rep. of Germany DL9KM · Fed. Rep. of Germany SP6TO · Poland SQ9SET · Poland

Most frequent locator attributed to SP3ZAC

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: JO82 · 15 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 439 km (approx.)
Last such locator decoded: 2026-08-30 12:12 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	SP3ZAC S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-30 12:12	40m	-13 / -	OZ7CL	- / 0	4	Partial capture
08-30 11:45	40m	-11 / -1	3Z0L	+2 / +1	5	✓ Full exchange observed
08-30 11:09	40m	- / -	3Z0L	+6 / -	2	Partial capture
08-30 11:06	40m	-10 / +5	DK2M	0 / +2	8	✓ Full exchange observed
08-30 11:05	40m	- / -2	SP6TO	+4 / -	5	✓ Closing fragment
08-30 11:02	40m	- / -	SP6TO	+2 / -	2	Partial capture
08-30 11:01	40m	-12 / -13	SQ9SET	-10 / -6	16	✓ Full exchange observed
08-30 10:44	20m	- / -	F4AWT	+2 / -	2	Partial capture
08-30 10:44	20m	- / -	F8FFV	-14 / -	3	Partial capture
08-30 10:31	20m	- / -17	DK4YA	+2 / -	2	✓ Closing fragment
08-30 10:25	40m	- / -	UT4PA	-1 / -	6	Partial capture
08-30 08:41	20m	- / -	YO3RU	-8 / -	2	Partial capture
08-30 08:40	20m	- / -7	4O4DB	+3 / -	5	✓ Closing fragment
08-30 08:35	20m	- / -11	F4JZW	-1 / -	4	✓ Closing fragment
08-29 14:35	40m	- / -5	DL9KM	-2 / -	8	✓ Closing fragment
08-29 14:19	20m	- / -	EB3JT	+7 / -	7	Partial capture
08-29 14:12	20m	- / -9	RN6MA	+4 / -	2	✓ Closing fragment
08-29 09:59	20m	- / -	F5RRS	+7 / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
111045  -2  491  SP3ZAC DK2M RR73
114345  -8 2514  CQ SP3ZAC JO82 (x2)
114500  +2 2507  SP3ZAC 3Z0L JO81
114515 -13 2514  3Z0L SP3ZAC +01
114530  +0 2507  SP3ZAC 3Z0L R-01
114545  -9 2514  3Z0L SP3ZAC RR73
114600  +3 2508  SP3ZAC 3Z0L 73
120900 -12 2515  CQ SP3ZAC JO82 (x2)
121215  +0 2467  SP3ZAC SP6TO -11
121230 -14 2515  OZ7CL SP3ZAC JO82 (x4)

20m

UTC    dB Audio  Message
084100  +5 2540  SP3ZAC 4O4DB JN92
084130 -11 2438  SP3ZAC YO3RU KN34
084300  +2 2540  SP3ZAC 4O4DB R-07 (x3)
103115  -1 1998  SP3ZAC DK4YA -17 (x2)
104115 -13 2484  SP3ZAC R5BM/M -15
104245  -9 2484  SP3ZAC <...> -18
104300  -5 2216  SP3ZAC IQ4JO JN63
104400 -14 1692  SP3ZAC F8FFV JN17
104400  +0 2537  SP3ZAC F4AWT JN24
104430 -17 1692  SP3ZAC F8FFV JN17
104430  +5 2537  SP3ZAC F4AWT JN24
104530 -11 1692  SP3ZAC F8FFV JN17

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