SP9GCZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO83

Receiver-side FT8 activity involving SP9GCZ, decoded by SO8OO in southeastern Poland. 3,001 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-09-05 and 2026-09-07.

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 3,001 FT8 messages attributed to SP9GCZ as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (76%), followed by 40 m (24%). The busiest six-hour window was 17:00-23:00 UTC, containing 37% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (83%); the estimated median was +3 dB.

Overview

3,001

Messages attributed

UTC dates decoded

117

Active 15-min windows

+3 dB

Estimated median S/N

Bands

80m · 2,271 40m · 730

First attributed message: 2026-09-05
Last attributed message: 2026-09-07 05:54 UTC

Observed FT8 message patterns

Attributed sample: 3,001 messages
Active dates: 3 UTC dates
Estimated median S/N: +3 dB
Estimated 10th-90th percentile: -11 to +12.2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 53, moderate (-15 to -9 dB) 457, strong (≥ -8 dB) 2,491.

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 SP9GCZ in decoded directed-looking exchanges:

EU1AFX · Belarus ×3 LA4O · Norway ×3 DL1IP · Fed. Rep. of Germany ×2 DL7UKM · Fed. Rep. of Germany ×2 DL9KM · Fed. Rep. of Germany ×2 EW4TT · Belarus ×2 SN4K · Poland ×2 SP2BT · Poland ×2 SP2BZ · Poland ×2 SP3AKK · Poland ×2 SP7VCL · Poland ×2 SQ4WMA · Poland ×2

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 SP9GCZ

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: JO83 · 2,375 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 515 km (approx.)
Last such locator decoded: 2026-09-07 05:49 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	SP9GCZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-06 22:09	80m	- / -9	EC3A	-16 / -	2	Partial capture
09-06 22:06	80m	- / -	EA3LF	-4 / -	3	Partial capture
09-06 22:05	80m	- / -14	EC3A	-14 / -	2	Partial capture
09-06 22:00	80m	- / -	US1EA	+3 / -	2	Partial capture
09-06 21:49	80m	+6 / +3	DL9DBF	-8 / -18	4	✓ Full exchange observed
09-06 21:49	80m	- / -	EA3LF	0 / -	3	Partial capture
09-06 21:48	80m	+4 / +1	DK7QJ	-15 / -5	5	✓ Full exchange observed
09-06 21:45	80m	- / -	DL9DBF	-5 / -	2	Partial capture
09-06 21:42	80m	+9 / 0	9A1BTU	+8 / -5	5	✓ Full exchange observed
09-06 21:36	80m	+10 / -	CT7AUT	- / -4	3	Partial capture
09-06 21:32	80m	+10 / 0	F4DIA	+6 / +6	5	✓ Full exchange observed
09-06 21:30	80m	+10 / -	DC9GT	- / -19	2	✓ Closing fragment
09-06 21:30	80m	- / -	9A3AUH	+10 / -	6	Partial capture
09-06 21:26	80m	+7 / -16	OE2AGZ	-14 / -19	10	✓ Full exchange observed
09-06 21:24	80m	- / -	9A3AUH	+8 / -	5	Partial capture
09-06 21:24	80m	+2 / +7	OH5CMP	-2 / +6	5	✓ Full exchange observed
09-06 21:21	80m	+8 / +1	OZ7CL	-7 / +6	5	✓ Full exchange observed
09-06 21:12	80m	+10 / -9	DA6MS	-2 / +7	6	✓ Full exchange observed
09-06 21:09	80m	+6 / -	M9KBN	- / -17	3	✓ Closing fragment
09-06 21:04	80m	- / -	9A3AUH	+5 / -	5	Partial capture
09-06 20:59	80m	+9 / -24	DO1DQ	-1 / +9	9	✓ Full exchange observed
09-06 20:51	80m	+2 / -5	DO5SB	+1 / +5	5	✓ Full exchange observed
09-06 20:47	80m	+8 / -3	SP3ZBZ	-10 / +5	5	✓ Full exchange observed
09-06 20:43	80m	+5 / 0	DO1OAS	-22 / -9	4	✓ Full exchange observed
09-06 20:33	80m	- / -11	EA1CP	-8 / -	2	Partial capture
09-06 20:31	80m	+8 / -6	OH1JUV	-11 / -1	5	✓ Full exchange observed
09-06 20:29	80m	+6 / -	OZ1LGJ	-14 / 0	4	✓ Closing observed
09-06 20:27	80m	+6 / -3	9A2DM	-7 / -5	5	✓ Full exchange observed
09-06 20:20	80m	+4 / -	HB9EXN	-14 / -9	2	Partial capture
09-06 20:13	80m	+8 / -	M0KHR	- / -14	2	✓ Closing fragment
09-06 20:10	80m	-2 / +10	SP5ALV	+14 / -	5	✓ Full exchange observed
09-06 19:55	80m	+6 / -	F4ESO	- / -7	2	✓ Closing fragment
09-06 19:50	80m	+8 / -9	DL4DTL	-22 / -19	3	✓ Full exchange observed
09-06 19:46	80m	+12 / -15	EA3LF	-19 / -15	5	✓ Full exchange observed
09-06 19:38	80m	+8 / +8	DO2RG	-4 / -	3	Partial capture
09-06 19:32	80m	+12 / +9	SQ2HEX	-6 / -4	5	✓ Full exchange observed
09-06 19:29	80m	+16 / -9	RX3DRC	-22 / -13	4	✓ Full exchange observed
09-06 19:27	80m	+14 / -	RA3RDN	-11 / -2	5	Partial capture
09-06 19:20	80m	+16 / -	UR3QCB	- / -12	4	✓ Closing fragment
09-06 19:18	80m	+12 / -	R2DDN	- / +1	2	✓ Closing fragment
09-06 19:09	80m	+10 / -	UR3QCB	- / -17	3	Partial capture
09-06 19:07	80m	+6 / -	DO2YJG	- / -17	3	✓ Closing fragment
09-06 18:57	80m	+14 / -	OH1LA	- / +7	2	✓ Closing fragment
09-06 18:51	80m	+10 / +2	RA2FU	-4 / -11	7	✓ Full exchange observed
09-06 18:48	80m	+12 / -2	DO7NHK	-6 / -5	7	✓ Full exchange observed
09-06 18:39	80m	+12 / -	OZ4DX	-1 / +10	5	✓ Full exchange observed
09-06 18:37	80m	+8 / -11	RN3YN	-22 / -15	3	✓ Full exchange observed
09-06 18:33	80m	+10 / -	UT0EZ	- / -1	2	✓ Closing fragment
09-06 18:27	80m	+10 / -	EI2KZB	- / -14	2	✓ Closing fragment
09-06 18:25	80m	+13 / -20	IZ7BAR	-8 / -3	4	✓ 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
145815  -7 1702  CQ SP9GCZ JO83 (x6)
150115  -3 1702  SM6CAL SP9GCZ +06 (x2)
150215  -5 1702  CQ SP9GCZ JO83 (x5)
055115 -12 1592  SQ8V SP9GCZ RR73
055445 -11 1592  LA1SNA SP9GCZ +07

80m

UTC    dB Audio  Message
220715  +4 1567  CQ SP9GCZ JO83
220730  -4 1168  SP9GCZ EA3LF JN11
220745 +10 1567  CQ SP9GCZ JO83 (x4)
220930 -17 1663  SP9GCZ EC3A -09
220945  +9 1567  CQ SP9GCZ JO83
221000 -16 1663  SP9GCZ EC3A -10
221015  +9 1567  CQ SP9GCZ JO83
221030 -16 1566  SP9GCZ R2DIH KO85
221045  +8 1567  CQ SP9GCZ JO83 (x4)

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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