GM4ZTO/QRP — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Scotland

Receiver-side FT8 activity involving GM4ZTO/QRP, decoded by SO8OO in southeastern Poland. 66 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-16 and 2026-11-03.

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 66 FT8 messages attributed to GM4ZTO/QRP as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (88%), followed by 40 m (12%). Most decodes (73%) fell within the six-hour window 07:00-13:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (71%); the estimated median was -6 dB.

Overview

66
Messages attributed
8
UTC dates decoded
17
Active 15-min windows
-6 dB
Estimated median S/N

Bands

40m · 8 20m · 58
First attributed message: 2026-06-16
Last attributed message: 2026-11-03 11:42 UTC

Observed FT8 message patterns

Attributed sample
66 messages
Active dates
8 UTC dates
Estimated median S/N
-6 dB
Estimated 10th-90th percentile
-13 to +1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 19, strong (≥ -8 dB) 47.

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.

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.

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 UTCBandGM4ZTO/QRP S/NCounterpartCounterpart S/NMsgsCapture
11-03 11:42 40m -13 / - PA2RO -4 / - 2 Partial capture
09-23 03:44 40m - / -2 UT2AU +18 / - 2 Partial capture
09-22 08:48 40m - / -11 DA1ST -8 / - 5 Partial capture
09-22 08:18 40m - / -2 GJ0KYZ -10 / - 2 Partial capture
09-21 21:58 40m - / -16 DL3MIB +10 / - 2 Partial capture
09-21 21:43 40m - / -16 DL3MIB +11 / - 8 Partial capture
09-20 08:42 40m - / -8 DJ4FAN -8 / - 2 Partial capture
09-20 08:38 40m - / -14 PA3CPS +4 / - 2 Partial capture
09-20 08:37 40m - / - <...> -2 / - 2 ✓ Closing fragment
09-20 08:37 40m - / - SM7HZK -9 / - 2 Partial capture
09-19 20:49 40m - / -4 M0TZO -7 / - 2 Partial capture
09-19 20:40 40m - / - DL2YCP +1 / - 2 Partial capture
09-19 20:40 40m -15 / - <...> +10 / - 2 ✓ Closing fragment
08-28 12:49 20m - / - IU1NFY 0 / - 2 Partial capture
08-28 12:47 20m -4 / - <...> - / - 2 Partial capture
08-27 13:52 20m -3 / - <...> - / - 2 Partial capture
08-27 13:09 20m - / -16 PD0RWH -6 / - 4 Partial capture
08-27 12:41 20m - / - <...> +1 / - 2 ✓ Closing fragment
08-27 12:38 20m -2 / - <...> - / - 2 Partial capture
08-27 12:33 20m -6 / - ON1JP - / -7 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
081900 -17  649  GM4ZTO/QRP <...> RR73 (x3)
084800  -9  649  GM4ZTO/QRP DA1ST JO41 (x5)
034415 +20  648  GM4ZTO/QRP UT2AU KO61 (x2)
112645  -9  966  GM4ZTO/QRP <...> 73 (x2)
113845  -8  966  GM4ZTO/QRP DD7EE R-05
114230 -13  562  PA2RO GM4ZTO/QRP
114415  -4  562  GM4ZTO/QRP PA2RO JO22
20m 
UTC    dB Audio  Message
131145  -7 1412  GM4ZTO/QRP PD0RWH R-16
135030  -3  459  CQ GM4ZTO/QRP (x3)
135200  +3  459  <...> GM4ZTO/QRP (x2)
142845  +4  465  RI1FJL GM4ZTO/QRP R-18
124400  -9  460  CQ GM4ZTO/QRP
124430  -5  460  OK1AYM GM4ZTO/QRP +01
124600  -7  460  F1IQH GM4ZTO/QRP -19
124700  -2  460  <...> GM4ZTO/QRP RRR (x2)
124930  -7  460  CQ GM4ZTO/QRP
124945  +0  461  GM4ZTO/QRP IU1NFY JN35 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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