HB9MZI — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Switzerland Most frequent locator attributed to this token: JN46

Receiver-side FT8 activity involving HB9MZI, decoded by SO8OO in southeastern Poland. 5,125 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 71 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-06.

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 5,125 FT8 messages attributed to HB9MZI as the transmitting token by decoded message structure across 71 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (59%), followed by 40 m (33%) and 10 m (6%). Most decodes (74%) fell within the six-hour window 21:00-03:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.

Overview

5,125
Messages attributed
71
UTC dates decoded
837
Active 15-min windows
-16 dB
Estimated median S/N

Bands

First attributed message: 2026-06-06
Last attributed message: 2026-10-06 16:38 UTC

Observed FT8 message patterns

Attributed sample
5,125 messages
Active dates
71 UTC dates
Estimated median S/N
-16 dB
Estimated 10th-90th percentile
-24 to -7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2,790, moderate (-15 to -9 dB) 1,617, strong (≥ -8 dB) 718.

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.

Most frequent locator attributed to HB9MZI

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
JN46 · 3,511 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,020 km (approx.)
Last such locator decoded
2026-09-25 21:15 UTC

Other locator fields attributed to this token: JN49 (942).

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 UTCBandHB9MZI S/NCounterpartCounterpart S/NMsgsCapture
10-06 17:21 40m - / -4 LA1KUA -9 / - 2 ✓ Closing fragment
10-06 16:35 40m -10 / - OZ1A - / - 4 Partial capture
10-06 15:55 40m -7 / - R6AEB - / - 5 Partial capture
10-06 14:58 40m -19 / -19 YU1AT/P -15 / - 7 Partial capture
10-06 14:49 40m -17 / -14 HB9SPACE -9 / +9 3 Partial capture
10-06 13:13 40m - / -5 DK9NM -24 / - 2 ✓ Closing fragment
10-06 10:32 40m - / - 9A7BB -11 / - 2 Partial capture
10-06 10:27 40m - / +3 DA125RH +8 / - 4 Partial capture
10-06 09:45 40m - / -6 IN3IBW -6 / - 4 ✓ Closing fragment
10-06 09:23 40m - / -9 F5JSQ -7 / - 2 ✓ Closing fragment
10-06 06:12 40m -10 / - F4CQS - / - 7 Partial capture
10-06 06:06 40m -11 / -10 E70N -8 / - 2 ✓ Closing observed
10-06 06:05 40m - / -14 EA5GO -12 / - 2 ✓ Closing fragment
10-06 05:57 40m -4 / - W5RBD - / - 2 Partial capture
10-06 05:48 40m -19 / - M9YDD - / -3 3 Partial capture
10-06 05:36 40m -11 / - KG6PH - / - 8 Partial capture
10-06 05:29 40m -13 / - HA1ORA - / - 8 Partial capture
10-05 23:04 40m - / -12 G4ZWY -18 / - 2 ✓ Closing fragment
10-05 23:01 40m - / -1 G4FHL 0 / - 3 ✓ Closing fragment
10-05 21:23 40m - / -21 G4KRF -4 / - 3 ✓ Closing fragment
10-05 21:10 40m -11 / - HB9ELE - / - 9 Partial capture
10-05 21:07 40m -15 / - BG5JKZ - / - 4 Partial capture
10-05 21:05 40m -18 / - M7NJI - / - 2 Partial capture
10-05 21:03 40m -11 / - YT3IN - / -5 2 ✓ Closing fragment
10-05 20:17 40m -17 / - M0ZJB - / +10 2 Partial capture
10-05 20:09 40m 0 / - JA1SXR - / - 11 Partial capture
10-05 20:01 40m -7 / - HA2NP - / +10 3 ✓ Closing fragment
10-05 19:59 40m -12 / - R1CCX - / - 15 Partial capture
10-05 19:44 40m -12 / - DA125RH - / - 6 Partial capture
10-05 19:37 40m -6 / - OH1TEV - / - 2 Partial capture
10-05 19:29 40m -9 / - UA3QGT - / - 8 Partial capture
10-05 19:26 40m -7 / - TA2AI - / - 3 Partial capture
10-05 19:20 40m -9 / - DG5LP - / - 9 Partial capture
10-05 19:15 40m -20 / - YD4AWV - / - 2 Partial capture
10-05 19:00 40m -18 / - EU6UE - / - 2 Partial capture
10-05 18:31 40m -18 / - R3PJU - / - 5 Partial capture
10-05 18:22 40m -10 / - R2AVT - / - 4 Partial capture
10-05 18:04 40m - / -24 R1QF -12 / - 2 ✓ Closing fragment
10-05 17:19 40m -16 / - SP9BBA - / - 3 Partial capture
10-05 16:37 40m - / -20 AM5CV -17 / - 2 ✓ Closing fragment
10-05 15:51 40m - / -19 YO3JW +7 / - 3 ✓ Closing fragment
10-05 15:38 40m - / -18 DL7PIA -6 / - 2 ✓ Closing fragment
09-25 21:14 40m -16 / - MM3GQT - / - 2 Partial capture
09-25 20:50 40m - / -15 M7KYX -12 / - 2 Partial capture
09-25 20:40 40m -16 / - DC9GT - / -9 3 ✓ Closing fragment
09-25 20:31 40m -22 / - CT7AIC - / - 2 Partial capture
09-25 17:18 40m - / -19 IQ6MC +2 / - 2 ✓ Closing fragment
09-25 17:04 40m - / +7 DG9EAL -9 / - 3 ✓ Closing fragment
09-25 17:01 40m -16 / - EU6UE - / - 2 Partial capture
09-25 16:46 40m - / -25 DL4AC -12 / - 4 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
155530  -7  547  R6AEB HB9MZI JN49 (x5)
160230 -16  850  IU3LWS HB9MZI R-16
163545  -7 2678  OZ1A HB9MZI JN49
163645 -11 1480  DM3ER HB9MZI JN49
163745 -13 2678  OZ1A HB9MZI JN49 (x3)
170130  -3  583  HB9MZI TM47CDXC -17
172100 -10 2926  HB9MZI LA1KUA -04 (x2)
184445  -8  326  HB9MZI OT2J RR73
160m
UTC    dB Audio  Message
195545 -11  973  HB9MZI DF4FS -15 (x4)
205915  -4  879  HB9MZI SP9ENV -20 (x3)
210845  -9 2478  HB9MZI DJ5QV -18
220345  -4 1612  HB9MZI DG1ABE -05 (x2)
223745 -18 1138  HB9MZI DO2TM -24 (x2)
233015 -18 1595  HB9MZI IU5TUD -15
041515 -12 1417  HB9MZI HB9GNH -19 (x2)
80m
UTC    dB Audio  Message
224000 -24 1990  IR7MGGC HB9MZI JN49
225145 -12 1215  HB9MZI DL1RBV -09
235315  -4  676  HB9MZI S56KO -01 (x3)
005415 +13  379  HB9MZI S57MPU -17 (x3)
011645  -1 1156  HB9MZI G3WPH -15 (x3)
013515 -24 2359  OH6RE HB9MZI JN49
013530  +8 2359  HB9MZI OH6RE -19
013545 -22 2359  OH6RE HB9MZI R+03
013600  +3 2359  HB9MZI OH6RE RR73
20m
UTC    dB Audio  Message
112015  +5 1097  LB9CJ HB9MZI JN46 (x2)
112230  -3 1077  M0IRQ HB9MZI JN46 (x3)
170015 -16  839  HB9MZI BG4UVR PM01
170130 -16 1415  HB9MZI R3TY -10
171600 -15  982  HB9MZI R6LQU -26 (x2)
175315 -23 1009  HB9MZI EG5DX -01
181000  -1 2324  HB9MZI SN40KZE -24 (x2)
182300 -16  751  BG2GWN HB9MZI JN46
182745 -19 1997  UR5YPV HB9MZI 73
184145 -16 1372  HB9MZI HB10GBT +00
10m
UTC    dB Audio  Message
120800  -8 2533  HB9MZI PE1LYU RR73 (x2)
211445 -12 2595  PU7OHK HB9MZI JN46
211630 -22 2202  HG0NPJ HB9MZI JN46
202545  -8 2316  HB9MZI F1GTU JN05 (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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