SP8AMJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: KO12

Receiver-side FT8 activity involving SP8AMJ, decoded by SO8OO in southeastern Poland. 25 FT8 messages attributed to this token as transmitter, on 160m, 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-02 and 2026-09-18.

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 SP8AMJ as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (96%), followed by 160 m (4%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

160m · 1 40m · 24

First attributed message: 2026-08-02
Last attributed message: 2026-09-18 19:05 UTC

Observed FT8 message patterns

Attributed sample: 25 messages
Active dates: 4 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -19 to -8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 13, strong (≥ -8 dB) 4.

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 SP8AMJ in decoded directed-looking exchanges:

JR1UTC · Japan ×2 DF6QN · Fed. Rep. of Germany 9A4ZM · Croatia F5PBG · France OH3OJ · Finland RC6OZ · European Russia TJ1GD/P · Cameroon US2UM · Ukraine US3EW · 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 SP8AMJ

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: KO12 · 9 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 297 km (approx.)
Last such locator decoded: 2026-09-18 18:58 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	SP8AMJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-18 19:16	40m	- / -3	US2UM	+8 / -	3	✓ Closing fragment
09-18 19:10	40m	- / -7	F5PBG	-8 / -	2	✓ Closing fragment
09-18 19:07	40m	- / -	F5PBG	-10 / -	2	Partial capture
09-18 19:05	40m	-24 / -9	US2UM	+8 / +1	5	Partial capture
09-06 17:13	40m	-8 / -	OZ7SKB/P	- / -9	2	Partial capture
09-06 17:10	40m	-8 / -	OH3OJ	-9 / -	2	✓ Closing observed
09-06 17:09	40m	-4 / +1	RC6OZ	0 / -3	5	✓ Full exchange observed
09-06 16:54	40m	-15 / -12	US3EW	+5 / -	4	✓ Closing observed
09-06 16:53	40m	-16 / 0	9A4ZM	+3 / -9	7	✓ Full exchange observed
09-06 16:49	40m	-13 / -	JR1UTC	-22 / -15	3	✓ Closing observed
09-06 16:46	40m	-15 / -	SP5DFK/QRP	- / -	3	Partial capture
09-04 17:23	40m	-13 / -	9A4ZM	+5 / -3	4	Partial capture
09-04 17:19	40m	-13 / -	RI1FJL	- / -	2	Partial capture
08-20 15:47	10m	- / -10	DF6QN	+7 / -	3	✓ Closing fragment
08-02 20:17	40m	-18 / -	TJ1GD/P	- / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
190415 -24 1391  9H4JX SP8AMJ R-14
190500  +1 2229  SP8AMJ US2UM KO50
190500 -17 1894  SP8AMJ ON3BSQ JO11
190515 -24 1391  US2UM SP8AMJ +01
190530 +10 2229  SP8AMJ US2UM R-09 (x3)
190700 -10 1391  SP8AMJ F5PBG IN78 (x3)
191030 +11 2780  SP8AMJ S57BTI JN75
191030  -5 1914  SP8AMJ F5PBG 73
191615  +8 2226  SP8AMJ US2UM KO50 (x3)

160m

UTC    dB Audio  Message
185800 -19 1706  DM5KM SP8AMJ KO12

10m

UTC    dB Audio  Message
154700  +5 2710  SP8AMJ DF6QN JO41 (x3)

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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