G4GVB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: England Most frequent locator attributed to this token: JO02

Receiver-side FT8 activity involving G4GVB, decoded by SO8OO in southeastern Poland. 79 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 23 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-09-15.

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 79 FT8 messages attributed to G4GVB as the transmitting token by decoded message structure across 23 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (81%), followed by 40 m (19%). Most decodes (92%) fell within the six-hour window 05:00-11:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-13 dB

Estimated median S/N

Bands

40m · 15 20m · 64

First attributed message: 2026-06-09
Last attributed message: 2026-09-15 06:53 UTC

Observed FT8 message patterns

Attributed sample: 79 messages
Active dates: 23 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -21 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 26, moderate (-15 to -9 dB) 25, strong (≥ -8 dB) 28.

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 G4GVB in decoded directed-looking exchanges:

9A3MRN · Croatia A71UN · Qatar CR5VP · Portugal DB2VS · Fed. Rep. of Germany DK6WS · Fed. Rep. of Germany EA1FMJ · Spain EI9KF · Ireland F1IQH · France F6DZU · France IS0AWZ · Sardinia SH5RJX · Sweden TA3MPK · Asiatic Turkey

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 G4GVB

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: JO02 · 48 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,470 km (approx.)
Last such locator decoded: 2026-09-15 06:53 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	G4GVB S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-15 06:59	40m	- / +5	DH3KR	-15 / -	2	✓ Closing fragment
09-15 06:51	40m	-11 / -	ZL3AAU	- / -	2	Partial capture
09-10 06:50	40m	-12 / -	ZL3JT	- / -	2	Partial capture
09-10 06:47	40m	-14 / -15	9A5JU	-4 / -	3	✓ Closing observed
09-08 06:40	40m	-7 / -	J38DX	- / -	2	✓ Closing fragment
08-31 06:53	20m	-5 / -10	TA3MPK	-4 / -	3	✓ Closing observed
08-29 09:54	20m	- / +5	EA1FMJ	0 / -	2	✓ Closing fragment
08-25 06:29	20m	-3 / -	RI1FJL	- / -	3	Partial capture
08-22 06:02	20m	0 / -	IS0AWZ	- / -	3	✓ Closing fragment
08-22 06:00	20m	+3 / -	VK2GQR	- / -	2	Partial capture
08-22 05:57	20m	+2 / -	VK4BPK	- / -	2	Partial capture
08-22 05:54	40m	-17 / -	EA1ESW	- / -2	2	✓ Closing fragment
08-21 12:39	20m	-16 / -	DK6WS	-14 / -1	4	✓ Closing observed
08-20 07:17	20m	-9 / -	F1IQH	- / -13	2	✓ Closing fragment
08-20 07:09	20m	- / -	F5OYA/P	-11 / -	2	Partial capture
08-20 06:57	20m	-6 / -	VK2SMP	- / -	3	Partial capture
08-17 07:23	20m	-16 / -	EJ4GRC	- / -4	2	Partial capture
08-06 10:13	20m	-14 / -	EI9KF	- / -6	4	✓ Closing fragment
08-06 10:10	20m	-21 / -	CR5VP	- / -2	3	✓ Closing fragment
08-01 05:14	40m	- / -	IU1TLG	-20 / -	2	Partial capture
07-28 04:29	20m	- / -15	A71UN	-16 / -	2	✓ Closing fragment
07-28 04:23	40m	- / -5	YO6LM	-8 / -	2	Partial capture
07-26 06:46	20m	- / -7	F6DZU	+5 / -	2	✓ Closing fragment
07-26 06:41	20m	-17 / -	XE2V	- / -6	6	Partial capture
07-22 06:52	40m	- / -12	OM1AN	-17 / -	3	✓ Closing fragment
07-19 09:38	20m	-19 / -	SH5RJX	- / -8	2	✓ Closing fragment
07-16 11:51	20m	-17 / -	TF8KW	- / -	2	Partial capture
07-12 08:10	20m	- / -22	UT5MD	-7 / -	3	Partial capture
06-26 12:41	10m	- / -7	GB198KHZ	-3 / -	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
064100  -7 2934  J38DX G4GVB 73
064500  -5 2792  W9DHI G4GVB JO02
064700 -14 2463  9A5JU G4GVB JO02
064715  -6 2463  G4GVB 9A5JU -15 (x2)
065015 -11 2717  ZL3JT G4GVB JO02 (x2)
065245 -22 1697  F4NGR G4GVB JO02
065830 -21 1989  VP5/K5UR G4GVB JO02
065000 -14 1667  DH6MBR G4GVB JO02
065130 -11 1131  ZL3AAU G4GVB JO02 (x2)
065930 -13 1477  G4GVB DH3KR +05 (x2)
080000 +13 2690  G4GVB SN100PKP +06

20m

UTC    dB Audio  Message
055745  +3  805  VK4BPK G4GVB JO02 (x2)
060015  +4  541  VK2GQR G4GVB JO02 (x2)
060215  -1 1495  IS0AWZ G4GVB JO02 (x3)
062945  -5 1619  RI1FJL G4GVB JO02 (x3)
095430  -1  384  G4GVB EA1FMJ +05 (x2)
065330  -5 2286  G4GVB TA3MPK -10 (x2)
065415  -5 2286  TA3MPK G4GVB 73

10m

UTC    dB Audio  Message
124130  -4  420  G4GVB GB198KHZ -07 (x2)

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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