G3SWC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: England Most frequent locator attributed to this token: IO91

Receiver-side FT8 activity involving G3SWC, decoded by SO8OO in southeastern Poland. 93 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-07-24 and 2026-08-03.

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 93 FT8 messages attributed to G3SWC as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -7 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-7 dB

Estimated median S/N

Bands

40m · 93

First attributed message: 2026-07-24
Last attributed message: 2026-08-03 21:33 UTC

Observed FT8 message patterns

Attributed sample: 93 messages
Active dates: 2 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -9 to -4 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 16, strong (≥ -8 dB) 77.

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 G3SWC in decoded directed-looking exchanges:

RN6MA · European Russia ×2 EA3GXK · Spain CX3DMP · Uruguay DK4NB · Fed. Rep. of Germany DL2YMR · Fed. Rep. of Germany DL3MIB · Fed. Rep. of Germany DL9AU · Fed. Rep. of Germany EW8DU · Belarus F1IQH · France G3SKA · England IZ3QCH · Italy OZ5AGJ · Denmark

Most frequent locator attributed to G3SWC

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: IO91 · 16 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,607 km (approx.)
Last such locator decoded: 2026-08-03 21:32 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	G3SWC S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-03 21:33	40m	-3 / -	PD1HBL	- / +2	2	✓ Closing fragment
08-03 21:30	40m	-5 / -	CX3DMP	- / -	2	✓ Closing fragment
08-03 21:27	40m	-4 / -	F1IQH	-10 / +8	4	✓ Closing observed
08-03 21:09	40m	-6 / -	PA2KV	- / -	2	✓ Closing fragment
08-03 21:06	40m	-8 / -	TJ1GD/P	- / -10	3	✓ Closing fragment
08-03 21:06	40m	- / 0	F1PBZ	-10 / -	2	Partial capture
08-03 21:04	40m	-6 / -	PC2J	-4 / +3	3	✓ Closing observed
08-03 21:03	40m	-5 / -13	R6FX	-8 / -4	2	Partial capture
08-03 21:01	40m	-4 / -	EW8DU	- / +3	2	✓ Closing fragment
08-03 21:00	40m	-6 / -	PD1AC	-20 / +4	6	✓ Closing observed
08-03 20:58	40m	- / -	R6FX	-8 / -	3	Partial capture
08-03 20:57	40m	-5 / -1	DL3MIB	-8 / +9	6	✓ Full exchange observed
08-03 20:56	40m	-4 / -	OZ5AGJ	-6 / +9	4	✓ Closing observed
07-24 22:08	40m	-4 / -	PY2VM	- / -22	3	✓ Closing fragment
07-24 20:56	40m	- / -	9A6CC	-8 / -	2	Partial capture
07-24 20:55	40m	- / -	F4ITK	-9 / -	3	Partial capture
07-24 20:51	40m	-9 / -5	UI6O	-22 / -8	3	✓ Full exchange observed
07-24 20:50	40m	-8 / 0	UF1A	-10 / +4	3	✓ Full exchange observed
07-24 20:49	40m	-7 / -	G3SKA	-6 / -	4	✓ Closing observed
07-24 20:48	40m	-6 / -	DL9AU	- / 0	2	✓ Closing fragment
07-24 20:45	40m	-8 / -	DK4NB	- / +1	4	✓ Closing fragment
07-24 20:43	40m	-9 / -	R8LCP	- / -6	3	Partial capture
07-24 20:42	40m	-8 / -3	UT4VL	-13 / -10	3	✓ Full exchange observed
07-24 20:41	40m	-8 / -	DL2YMR	- / -6	2	✓ Closing fragment
07-24 20:37	40m	-8 / -	RU6FK	- / +3	6	Partial capture
07-24 20:35	40m	-8 / -	UB1OBV	- / -8	3	Partial capture
07-24 20:32	40m	-9 / -2	IZ3QCH	-15 / +6	5	✓ Full exchange observed
07-24 20:31	40m	-8 / -	<...>	- / -6	2	Partial capture
07-24 20:28	40m	-6 / -	JA5MHD	- / -15	5	Partial capture
07-24 20:26	40m	-4 / -	SQ9SET	- / -7	3	Partial capture
07-24 20:24	40m	- / -10	SP7TF	-2 / -	2	✓ Closing fragment
07-24 20:21	40m	-6 / -	PG1N	- / -19	2	✓ Closing fragment
07-24 20:19	40m	-5 / -1	RN6MA	-4 / -10	4	✓ Full exchange observed
07-24 12:29	20m	- / -3	DL9KM	-13 / -	2	Partial capture
07-24 12:27	20m	- / -22	YO6LM	0 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
212415  -7  387  CQ G3SWC IO91
212445  -5  387  ON4LDZ G3SWC +01
212700  -8  388  G3SWC F1IQH JN27
212715  -3  387  CQ G3SWC IO91
212730 -11  388  G3SWC F1IQH JN27
212745  -3  387  F1IQH G3SWC +08 (x2)
212845  -7  387  CQ G3SWC IO91 (x2)
213045  -6  387  CX3DMP G3SWC RR73 (x2)
213145  +4  387  CQ G3SWC IO91 (x2)
213315  +0  387  PD1HBL G3SWC +02 (x2)

20m

UTC    dB Audio  Message
122545 -24 1716  G3SWC F4HSB R+17
122715  +1 1025  G3SWC YO6LM -22 (x2)
122915 -14 1788  G3SWC DL9KM JN68 (x2)
123215  -9  464  G3SWC EA3GXK 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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