G4MZV — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: England Most frequent locator attributed to this token: IO92

Receiver-side FT8 activity involving G4MZV, decoded by SO8OO in southeastern Poland. 14 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-07-31.

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 14 FT8 messages attributed to G4MZV as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (71%), followed by 10 m (29%). In this small sample, the estimated median decoder S/N was -17 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-17 dB

Estimated median S/N

Bands

20m · 10 10m · 4

First attributed message: 2026-06-08
Last attributed message: 2026-07-31 10:34 UTC

Observed FT8 message patterns

Attributed sample: 14 messages
Active dates: 6 UTC dates
Estimated median S/N: -17 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 9, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 0.

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 G4MZV in decoded directed-looking exchanges:

F4FSY · France SY1DQE · Greece CN2DX · Morocco CT7AUT · Portugal DK7UY · Fed. Rep. of Germany HA1ZW · Hungary LZ3CB · Bulgaria MI0JZZ · Northern Ireland PD1ADA · Netherlands RL3K · European Russia

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 G4MZV

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: IO92 · 3 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,606 km (approx.)
Last such locator decoded: 2026-07-31 10:34 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	G4MZV S/N	Counterpart	Counterpart S/N	Msgs	Capture
07-31 10:33	20m	-12 / -	AD9GE	- / -	2	Partial capture
07-18 09:18	10m	- / -15	SY1DQE	-15 / -	3	✓ Closing fragment
07-13 09:22	20m	-18 / -11	LZ3CB	-2 / +8	3	✓ Full exchange observed
07-11 10:16	20m	- / -11	MI0JZZ	-16 / -	2	✓ Closing fragment
07-11 10:06	20m	-17 / -15	RL3K	-24 / -	3	✓ Closing observed
07-11 10:04	20m	- / +10	PD1ADA	-17 / -	2	✓ Closing fragment
07-11 10:03	20m	- / -	RL3K	-16 / -	2	Partial capture
07-11 09:28	10m	- / -4	F4FSY	-14 / -	2	✓ Closing fragment
07-08 08:24	20m	-22 / -	HA1ZW	- / +3	2	✓ Closing fragment
07-08 08:18	20m	-22 / -	CT7AUT	- / +1	2	✓ Closing fragment
07-08 08:16	20m	-10 / -	DK7UY	-12 / -10	2	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
091615 -15  947  G4MZV DJ0MAB JN49

20m

UTC    dB Audio  Message
100300 -18 2370  G4MZV RL3K KO91 (x2)
100400 -18 2035  G4MZV PD1ADA R+10 (x2)
100600 -23 1916  G4MZV RL3K R-15
100615 -17 2371  RL3K G4MZV RR73
100630 -24 1916  G4MZV RL3K 73
101645 -17 2179  G4MZV MI0JZZ -11 (x2)
092215  -1  960  G4MZV LZ3CB -11
092230 -18  959  LZ3CB G4MZV R+08
092245  -3  960  G4MZV LZ3CB RR73
102530 -13 1780  G4MZV CN2DX RR73
103330 -14 1772  AD9GE G4MZV IO92 (x2)

10m

UTC    dB Audio  Message
101815  -1 1194  G4MZV IU3VXN +00
092830  -9 1665  G4MZV F4FSY -04 (x2)
091815 -16  771  G4MZV SY1DQE -15 (x3)

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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee