SP3KZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO71

Receiver-side FT8 activity involving SP3KZ, decoded by SO8OO in southeastern Poland. 68 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-16 and 2026-08-23.

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 68 FT8 messages attributed to SP3KZ as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (56%), followed by 40 m (44%). Several six-hour UTC windows tied for the largest share (57%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (65%); the estimated median was -6 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

40m · 30 20m · 38

First attributed message: 2026-06-16
Last attributed message: 2026-08-23 15:38 UTC

Observed FT8 message patterns

Attributed sample: 68 messages
Active dates: 3 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -20 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 11, strong (≥ -8 dB) 44.

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 SP3KZ in decoded directed-looking exchanges:

YO6PPX · Romania ×2 CU3HN · Azores DL1UDO · Fed. Rep. of Germany EA5D · Spain F1ODM · France F1PPH · France F4AWT · France F5RRS · France G7IGC · England M0PBG · England ON1AJ · Belgium UT7UJ · Ukraine

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 SP3KZ

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: JO71 · 24 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 508 km (approx.)
Last such locator decoded: 2026-08-23 15:38 UTC

Other locator fields attributed to this token: JO43 (10) and JO63 (1).

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	SP3KZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-23 15:32	40m	-20 / 0	SQ9EJ	-5 / -	4	✓ Closing observed
08-23 10:16	20m	-4 / -	PD1PSR	-14 / -24	3	Partial capture
08-23 10:15	20m	- / -10	DL1UDO	-9 / -	3	✓ Closing fragment
08-23 10:10	20m	- / -12	ON1AJ	0 / -	3	✓ Closing fragment
08-23 10:00	20m	-4 / -16	F5RRS	+3 / -14	5	✓ Full exchange observed
08-23 09:43	20m	- / -	OE8PIT	+1 / -	3	Partial capture
08-23 09:14	20m	- / -19	UT7UJ	+10 / -	2	✓ Closing fragment
08-23 09:06	20m	-6 / -10	CU3HN	-11 / -5	4	✓ Full exchange observed
08-23 09:03	20m	0 / -	YO6PPX	- / -	2	✓ Closing fragment
08-23 08:59	20m	-15 / -	YO6PPX	- / -	3	✓ Closing fragment
08-23 08:54	20m	- / -11	F4AWT	-5 / -	3	✓ Closing fragment
08-23 08:52	20m	- / -	F1PPH	-13 / -	2	✓ Closing fragment
08-23 08:40	20m	-23 / -	M0PBG	+2 / -	5	✓ Closing observed
08-23 08:35	20m	- / -8	F1PBZ	+10 / -	3	Partial capture
08-23 08:20	20m	-4 / -5	F1ODM	-6 / -18	7	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
090430 -18 2127  OZ9FF SP3KZ -10
153200 -20 2126  CQ SP3KZ JO71
153245 -10 1689  SP3KZ SQ9EJ JN99 (x2)
153330 -20 2126  SQ9EJ SP3KZ RR73
153345  -4 1689  SP3KZ SQ9EJ 73
153430 -21 2126  CQ SP3KZ JO71 (x3)

20m

UTC    dB Audio  Message
100200 -15 2017  CQ SP3KZ JO71
101000  -1 1729  SP3KZ ON1AJ JO20 (x3)
101145 -14 1937  CQ SP3KZ JO71 (x3)
101415  -5 1935  EA5D SP3KZ RR73
101445  -7 1935  CQ SP3KZ JO71                         a1
101500  -6 1666  SP3KZ DL1UDO JO31 (x2)
101600 -15 1935  SP3KZ PD1PSR JO33
101600 -10 1666  SP3KZ DL1UDO 73
101645  -4 1936  PD1PSR SP3KZ -24
101700 -12 1935  SP3KZ PD1PSR JO33

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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