G4MJS — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving G4MJS, decoded by SO8OO in southeastern Poland. 13 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-07-02 and 2026-09-12.

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 13 FT8 messages attributed to G4MJS as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (92%), followed by 40 m (8%). In this small sample, the estimated median decoder S/N was -18 dB; no usual signal pattern is inferred.

Overview

13
Messages attributed
3
UTC dates decoded
4
Active 15-min windows
-18 dB
Estimated median S/N

Bands

40m · 1 20m · 12
First attributed message: 2026-07-02
Last attributed message: 2026-09-12 15:51 UTC

Observed FT8 message patterns

Attributed sample
13 messages
Active dates
3 UTC dates
Estimated median S/N
-18 dB
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 3, 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 G4MJS in decoded directed-looking exchanges:

Most frequent locator attributed to G4MJS

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 · 7 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,607 km (approx.)
Last such locator decoded
2026-08-16 13:18 UTC

Other locator fields attributed to this token: IO90 (1).

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 UTCBandG4MJS S/NCounterpartCounterpart S/NMsgsCapture
09-17 11:29 40m - / -8 DK7UY -6 / - 2 ✓ Closing fragment
09-17 11:20 40m - / -12 DA1ST -17 / - 2 Partial capture
09-17 11:17 40m - / - DK5UR -10 / - 2 Partial capture
09-17 11:13 40m - / - DK1XAM -14 / - 2 Partial capture
09-16 20:36 80m - / -19 DO9SAM +12 / - 2 Partial capture
09-16 20:34 80m - / - DO8JB -18 / - 2 Partial capture
09-16 20:34 80m - / - EA1IOK -11 / - 5 Partial capture
09-16 20:34 80m - / -9 DK7ZT +8 / - 3 ✓ Closing fragment
09-16 20:33 80m - / - F4ANC -12 / - 2 Partial capture
09-16 20:33 80m - / -13 HA7TM +20 / - 3 ✓ Closing fragment
09-15 12:02 40m - / +6 F6ARS -13 / - 3 ✓ Closing fragment
09-15 11:59 40m - / -20 HG8LXL -10 / - 3 ✓ Closing fragment
09-15 11:54 40m - / - HG8LXL -6 / - 4 Partial capture
09-15 11:49 40m - / -11 SP3DVO -12 / - 3 ✓ Closing fragment
09-15 11:47 40m - / -14 DK5UR -8 / - 3 ✓ Closing fragment
09-15 11:46 40m - / -1 DH1JAD -13 / - 2 Partial capture
09-15 11:42 40m - / -18 HA7TM +12 / - 3 ✓ Closing fragment
09-15 11:00 40m - / - HA7TM -7 / - 2 Partial capture
09-15 11:00 40m - / - HG8LXL -13 / - 2 Partial capture
09-15 10:50 40m - / - HG8LXL -18 / - 4 Partial capture
09-13 10:51 40m - / - PA3GAE -14 / - 2 Partial capture
09-13 10:40 40m - / -5 PA2RO -12 / - 4 Partial capture
09-12 15:52 40m - / - DC6MY +8 / - 2 Partial capture
09-12 15:49 40m - / -14 G3RTE -4 / - 2 ✓ Closing fragment
09-12 15:48 40m - / - PI4TX -16 / - 4 Partial capture
09-12 15:42 40m - / - HG8LXL -9 / - 4 Partial capture
09-12 15:35 40m - / -17 PD3FR -5 / - 3 ✓ Closing fragment
09-12 15:32 40m - / -17 9A4ZM +4 / - 4 Partial capture
09-12 15:31 40m - / - DJ7WG -4 / - 6 Partial capture
09-12 15:28 40m - / +2 DN2FBG -10 / - 4 ✓ Closing fragment
09-12 15:27 40m - / -1 PA1APW -15 / - 2 Partial capture
09-12 15:26 40m - / +1 DL7ACA +4 / - 2 Partial capture
09-12 15:26 40m - / -11 I2OGV +10 / - 13 ✓ Closing fragment
09-12 15:15 40m - / -13 DK6MR -13 / - 4 ✓ Closing fragment
09-12 15:11 40m - / -1 PA5MB -19 / - 3 ✓ Closing fragment
09-12 15:08 40m - / -7 F1PBZ -7 / - 4 Partial capture
08-16 13:15 20m -22 / - DB1EF -23 / +1 2 Partial capture
08-16 13:11 20m - / -23 UT7UJ -8 / - 3 ✓ Closing fragment
07-02 18:17 20m - / -25 RX3AEX -12 / - 4 ✓ Closing fragment
07-02 18:15 20m -16 / - VK2LAW - / - 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
120245 -12  764  G4MJS F6ARS JN38 (x3)
110500 -11 1277  G4MJS DA1ST JO41
111200 -10  342  G4MJS OE8PIT JN66
111330 -13 2489  G4MJS DK1XAM JO42 (x2)
111730 -13  590  G4MJS DK5UR JO40 (x2)
112000 -16 1277  G4MJS DA1ST JO41 (x2)
112300 -20 1278  G4MJS DJ0MAB JN49
112900  -9  456  G4MJS DK7UY R-08 (x2)
113515 -20 1157  G4MJS DL1AFH JO30
80m 
UTC    dB Audio  Message
203400 -17  704  G4MJS F4ANC JN25
203400  +7 1109  G4MJS DK7ZT -09
203430 +21 1028  G4MJS HA7TM 73
203430 -14  451  G4MJS EA1IOK IN62
203430 -21 1503  G4MJS DO8JB JO32
203430  +6 1109  G4MJS DK7ZT -09
203500 +16 1027  G4MJS YO4NF -16
203500 -13  451  G4MJS EA1IOK IN62
203500 +12 1109  G4MJS DK7ZT RR73
203530  -8  451  G4MJS EA1IOK IN62
203530 -15 1503  G4MJS DO8JB JO32
203600 -12  451  G4MJS EA1IOK IN62 (x2)
203630 +11 1028  G4MJS DO9SAM JO61 (x2)
20m 
UTC    dB Audio  Message
182045 -12 1486  CS8ABF G4MJS 73
182115 -10 1486  CQ G4MJS IO91
182145 -18 1486  R1AI G4MJS R-01
182345 -18 1487  CQ G4MJS IO91
182645 -19 1486  RZ4FWA G4MJS RR73
131115  -5 1344  G4MJS UT7UJ -23
131115 -21 2053  G4MJS IK4TVP RR73
131245  -9 1343  G4MJS UT7UJ -11 (x2)
131400 -24 1344  CQ G4MJS IO91
131430 -24 1344  EA5JKT G4MJS -04
131530 -23 1344  CQ G4MJS IO91
131545 -23 1563  G4MJS DB1EF JO41
131700 -22 1344  DB1EF G4MJS +01
131830 -17 1344  A61SD G4MJS IO91

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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