SP8KJX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: KN09

Receiver-side FT8 activity involving SP8KJX, decoded by SO8OO in southeastern Poland. 7 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-07-09 and 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 7 FT8 messages attributed to SP8KJX as the transmitting token by decoded message structure across 2 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 -1 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-1 dB

Estimated median S/N

Bands

40m · 7

First attributed message: 2026-07-09
Last attributed message: 2026-08-30 06:03 UTC

Observed FT8 message patterns

Attributed sample: 7 messages
Active dates: 2 UTC dates
Estimated median S/N: -1 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 5.

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 SP8KJX in decoded directed-looking exchanges:

4O7CC · Montenegro ×2 DB1BW · Fed. Rep. of Germany DL0IR · Fed. Rep. of Germany PE1NPS · Netherlands R2SN · European Russia SP3FXC · Poland SP5AA · Poland SP6FME · Poland SQ6FHT · Poland YT2ZE · Serbia

Most frequent locator attributed to SP8KJX

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: KN09 · 4 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 75 km (approx.)
Last such locator decoded: 2026-08-30 06:01 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	SP8KJX S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-06 06:20	40m	- / -15	4O7CC	-12 / -	2	✓ Closing fragment
09-06 06:10	40m	- / -7	SP5AA	0 / -	2	✓ Closing fragment
09-06 06:03	40m	- / -21	4O7CC	-6 / -	6	✓ Closing fragment
09-06 06:00	40m	- / -7	YL3HI	+1 / -	3	Partial capture
09-06 05:59	40m	- / -17	4O7CC	-8 / -	2	Partial capture
09-06 05:57	40m	- / -13	SP6FME	+4 / -	2	✓ Closing fragment
09-06 05:53	40m	- / -18	4O7CC	-4 / -	4	Partial capture
09-05 18:01	40m	- / -15	OE/DG7CF	+2 / -	3	Partial capture
09-05 17:56	40m	- / -11	DL0IR	+8 / -	2	✓ Closing fragment
09-05 17:54	40m	- / -10	OE/DG7CF	+3 / -	4	Partial capture
08-30 06:00	40m	-1 / +1	SQ6FHT	-20 / -10	6	✓ Full exchange observed
07-09 17:32	40m	- / -7	R2SN	-17 / -	4	✓ Closing fragment
07-09 17:04	40m	- / -	PA2KV	-10 / -	2	Partial capture
07-09 17:04	40m	- / -16	SP7TF	-20 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
055900  -9 2272  SP8KJX 4O7CC -17 (x2)
060030  +3 3035  SP8KJX YL3HI -07 (x3)
060300  -9 2272  SP8KJX 4O7CC -21 (x6)
061030  +0 2275  SP8KJX SP5AA -07 (x2)
062000 -11 2273  SP8KJX 4O7CC -15 (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.

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