G5STU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: England Most frequent locator attributed to this token: IO80

Receiver-side FT8 activity involving G5STU, decoded by SO8OO in southeastern Poland. 574 FT8 messages attributed to this token as transmitter, on 40m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-09-14.

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 574 FT8 messages attributed to G5STU as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). Most decodes (76%) fell within the six-hour window 21:00-03:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

574

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

40m · 574

First attributed message: 2026-06-09
Last attributed message: 2026-09-14 22:32 UTC

Observed FT8 message patterns

Attributed sample: 574 messages
Active dates: 8 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -15 to -2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 52, moderate (-15 to -9 dB) 250, strong (≥ -8 dB) 272.

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 G5STU in decoded directed-looking exchanges:

KF9UG · United States ×5 9A7BB · Croatia ×2 DF0AWG · Fed. Rep. of Germany ×2 DL6ZOG · Fed. Rep. of Germany ×2 F1HFP · France ×2 OH3GBW · Finland ×2 PD0JHM · Netherlands ×2 9A9TT · Croatia AB5VJ · United States CR7BRV · Portugal CT7ARQ · Portugal DA1NCO · Fed. Rep. of Germany

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 G5STU

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: IO80 · 402 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,757 km (approx.)
Last such locator decoded: 2026-09-14 22:32 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	G5STU S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-16 20:00	40m	- / -15	SV1DKR	-4 / -	2	Partial capture
09-16 19:57	40m	- / -5	DK6WS	-3 / -	2	✓ Closing fragment
09-14 22:32	40m	-18 / -16	II9IAGM	-10 / -2	4	Partial capture
09-14 22:31	40m	- / -8	EB7HQE	-17 / -	2	✓ Closing fragment
09-14 22:26	40m	- / -9	F1HFP	+4 / -	2	✓ Closing fragment
09-14 22:11	40m	-12 / 0	HB9ELE	+9 / -	3	Partial capture
09-14 22:09	40m	- / -	IU4PPL	-4 / -	2	Partial capture
09-14 16:17	40m	- / -4	G4XRX	-19 / -	3	✓ Closing fragment
09-14 16:04	40m	- / 0	M0BEW	-10 / -	2	✓ Closing fragment
09-14 15:32	40m	- / -6	DF1WR	-4 / -	3	✓ Closing fragment
09-14 14:55	40m	- / -11	DL3DQL/P	+2 / -	2	✓ Closing fragment
09-14 14:33	40m	- / -10	OZ7CL	-5 / -	7	Partial capture
09-14 14:18	40m	- / -19	DL9NO	-8 / -	2	✓ Closing fragment
09-14 13:37	40m	- / -2	ON4CJU	-14 / -	2	✓ Closing fragment
09-14 13:12	40m	- / -11	PD1DP	-20 / -	2	✓ Closing fragment
09-14 13:12	40m	- / -	IZ2EWN	-20 / -	4	Partial capture
09-14 13:07	40m	- / -	IZ2EWN	-15 / -	3	Partial capture
09-14 13:02	40m	- / -12	IZ2EWN	-15 / -	2	Partial capture
09-14 10:21	40m	- / -12	9A7BB	-10 / -	2	✓ Closing fragment
09-14 10:13	40m	- / -1	LA8ENA	-17 / -	2	✓ Closing fragment
09-14 08:49	40m	- / -19	DJ0MAB	-7 / -	3	Partial capture
09-10 11:07	40m	- / -17	9A9TT	-6 / -	2	✓ Closing fragment
09-10 11:01	40m	- / -10	LY1CR	-12 / -	2	✓ Closing fragment
09-10 10:46	40m	- / -15	DJ7XB	+2 / -	2	✓ Closing fragment
09-10 10:43	40m	- / +10	DA1NCO	-18 / -	2	✓ Closing fragment
09-10 10:28	40m	- / -19	S53AK	-6 / -	3	✓ Closing fragment
09-10 09:34	40m	- / -16	OZ9FF	-12 / -	2	✓ Closing fragment
09-10 08:57	40m	- / -16	DL7DF	-4 / -	2	✓ Closing fragment
09-10 08:40	40m	- / -15	DL1SO	-5 / -	2	✓ Closing fragment
09-10 08:40	40m	- / -18	OE/DG7CF	-10 / -	3	Partial capture
09-10 07:56	40m	- / -	DM5KK	-5 / -	3	Partial capture
09-10 07:47	40m	- / -16	F1HFP	-14 / -	2	✓ Closing fragment
09-10 07:37	40m	- / +5	IK2ZJR	-8 / -	7	✓ Closing fragment
09-10 07:32	40m	- / -17	ON4AOI	-6 / -	2	✓ Closing fragment
09-10 07:27	40m	-24 / -17	ON4AOI	-5 / -	7	Partial capture
09-10 07:17	40m	-11 / -4	OZ1JMJ	+4 / +6	5	✓ Full exchange observed
09-10 07:14	40m	-21 / -	ON4AOI	- / -	3	Partial capture
09-10 07:12	40m	-11 / -	OZ1KZX	-13 / -	4	✓ Closing observed
09-10 06:54	40m	-12 / -8	DM9YL	-17 / -	2	✓ Closing observed
09-10 06:45	40m	- / -10	9A7BB	+2 / -	2	✓ Closing fragment
09-10 06:43	40m	-16 / -	ZL1OGX	- / -	2	Partial capture
09-10 06:40	40m	- / -4	DK6WH	0 / -	2	✓ Closing fragment
09-10 06:38	40m	- / -7	F5RRS	-16 / -	2	✓ Closing fragment
09-10 06:36	40m	-6 / -	IU2VUZ	- / -6	2	✓ Closing fragment
09-10 06:31	40m	-11 / -	DK8EW	0 / -	2	✓ Closing observed
09-10 06:08	40m	- / +6	DJ2CR	-9 / -	2	✓ Closing fragment
09-10 05:55	40m	- / -6	IK3SCB	0 / -	2	✓ Closing fragment
09-10 05:43	40m	- / +2	DL6NDN	-2 / -	2	✓ Closing fragment
09-10 05:39	40m	- / -12	IK4RVY	-3 / -	2	✓ Closing fragment
09-10 05:17	40m	-18 / -	DF2KD	- / -6	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
221330  -8 1784  G5STU EA8UP RR73
222500 +14  354  G5STU DR800WE -09
222630  +1 2099  G5STU F1HFP -09 (x2)
223100 -16 2000  G5STU EB7HQE -08 (x2)
223215 -17  813  II9IAGM G5STU IO80
223230 -13  813  G5STU II9IAGM -16
223245 -18  813  II9IAGM G5STU R-02
223300  -6  813  G5STU II9IAGM -16
195730  -7 1017  G5STU DK6WS -05 (x2)
200030  -6 1631  G5STU SV1DKR -15 (x2)
111000 -23 1487  G5STU ON1DGN +00

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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