SP9GC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO90

Receiver-side FT8 activity involving SP9GC, decoded by SO8OO in southeastern Poland. 18 FT8 messages attributed to this token as transmitter, on 160m, 60m, 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-26 and 2026-09-13.

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 18 FT8 messages attributed to SP9GC as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (44%), followed by 60 m (39%) and 160 m (17%). In this small sample, the estimated median decoder S/N was -6 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

160m · 3 60m · 7 40m · 8

First attributed message: 2026-06-26
Last attributed message: 2026-09-13 13:21 UTC

Observed FT8 message patterns

Attributed sample: 18 messages
Active dates: 3 UTC dates
Estimated median S/N: -6 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 12.

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 SP9GC in decoded directed-looking exchanges:

SP9MRP · Poland 9A5E · Croatia DK7ZT · Fed. Rep. of Germany ON7GB · Belgium SQ2PHC · Poland

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 SP9GC

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: JO90 · 7 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 208 km (approx.)
Last such locator decoded: 2026-09-13 13:12 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	SP9GC S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-13 13:22	40m	- / -10	SP7TF	-7 / -	6	Partial capture
09-13 13:12	40m	+2 / -	SO100PKP	- / +10	2	Partial capture
09-13 09:16	40m	- / -	HG8LXL	-8 / -	4	Partial capture
09-13 09:14	40m	-3 / -	SP100PKP	+8 / -	4	Partial capture
09-12 22:34	40m	- / -	PD0LBY	-11 / -	3	Partial capture
09-12 22:31	40m	- / -9	9A5E	-13 / -	4	✓ Closing fragment
09-12 21:03	160m	- / -9	SP9MRP	0 / -	2	✓ Closing fragment
09-12 20:59	160m	- / -	SP9MRP	-8 / -	3	Partial capture
09-12 20:28	160m	-21 / -	HF100PKP	- / +6	2	Partial capture
09-12 19:31	160m	- / -	OK1DXR	+1 / -	7	Partial capture
09-12 19:31	160m	- / -	SP9CTW	+6 / -	2	Partial capture
06-26 20:19	60m	-6 / 0	DK7ZT	-12 / -13	4	✓ Full exchange observed
06-26 20:18	60m	-7 / -7	ON7GB	+2 / +1	5	✓ Full exchange observed
06-26 20:16	60m	-9 / +3	SQ2PHC	-2 / -2	5	✓ 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
091500  +8 2679  SP9GC SP100PKP +19
091515  -6 2679  SP100PKP SP9GC R+22
091600 -12 1648  SP9GC HG8LXL KN06 (x4)
131245  +1 1626  SO100PKP SP9GC JO90 (x2)
132115  -4 1415  EA3IWJ/P SP9GC R+00
132200  -5 1061  SP9GC SP7TF -10 (x6)

160m

UTC    dB Audio  Message
193230  -5 1295  SP9GC OK1DXR JO60 (x5)
202845 -18  888  HF100PKP SP9GC JO90 (x2)
203000 +17  887  SP9GC RR73; SP9TBT <...> -16
205815 -17 1074  3Z100PKP SP9GC R+06
205900  -5 1568  SP9GC SP9MRP JO90 (x5)
210630  +7 1073  SP9GC SQ100PKP -03

60m

UTC    dB Audio  Message
201630 -10 1853  SQ2PHC SP9GC JO90
201645  -1 1853  SP9GC SQ2PHC +03
201700  -7 1853  SQ2PHC SP9GC R-02
201715  -2 1854  SP9GC SQ2PHC RR73
201730  -9 1853  SQ2PHC SP9GC 73
201815  +0 2342  SP9GC ON7GB JO21
201830  -9 1853  ON7GB SP9GC +01
201845  +2 2343  SP9GC ON7GB R-07
201900  -5 1853  ON7GB SP9GC RR73
201915  +3 2342  SP9GC ON7GB 73
201945 -13 1899  SP9GC DK7ZT +00
202000  -5 1853  DK7ZT SP9GC R-13
202015 -12 1899  SP9GC DK7ZT RR73
202030  -6 1854  DK7ZT SP9GC 73

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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