HB9EBM — 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: Switzerland Most frequent locator attributed to this token: JN37

Receiver-side FT8 activity involving HB9EBM, decoded by SO8OO in southeastern Poland. 705 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 44 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-11-04.

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 705 FT8 messages attributed to HB9EBM as the transmitting token by decoded message structure across 44 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (39%), followed by 80 m (32%) and 20 m (14%). Most decodes (76%) fell within the six-hour window 19:00-01:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (90%); the estimated median was +6.3 dB.

Overview

705
Messages attributed
44
UTC dates decoded
109
Active 15-min windows
+6.3 dB
Estimated median S/N

Bands

First attributed message: 2026-06-10
Last attributed message: 2026-11-04 23:00 UTC

Observed FT8 message patterns

Attributed sample
705 messages
Active dates
44 UTC dates
Estimated median S/N
+6.3 dB
Estimated 10th-90th percentile
-8.6 to +17 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 15, moderate (-15 to -9 dB) 56, strong (≥ -8 dB) 634.

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 HB9EBM

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
JN37 · 464 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,116 km (approx.)
Last such locator decoded
2026-11-04 22:59 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 UTCBandHB9EBM S/NCounterpartCounterpart S/NMsgsCapture
11-04 22:59 60m +4 / +10 OK1BN 0 / - 6 ✓ Full exchange observed
11-04 22:58 60m +8 / - OZ7FOC - / - 2 Partial capture
11-04 22:56 60m +4 / - OM3PR - / -3 2 ✓ Closing fragment
11-04 22:53 60m +3 / -19 DJ0MAB -6 / -14 11 ✓ Full exchange observed
11-04 22:52 60m -1 / - ER3UA - / -4 2 ✓ Closing fragment
11-04 22:40 80m +9 / - AP5ARS - / - 3 Partial capture
11-04 21:20 60m -12 / -7 CT1DIZ -16 / - 4 ✓ Closing observed
11-04 21:15 60m -15 / - DL3HWD - / -8 6 ✓ Closing fragment
11-04 21:06 60m -14 / -13 OE8PIT +9 / -11 6 Partial capture
11-04 20:54 60m -13 / -13 F5NAA -1 / -16 4 Partial capture
11-04 20:51 60m -18 / - SV2CWV - / -13 4 ✓ Closing fragment
11-04 20:48 60m -12 / - 9A4ZM - / +10 2 ✓ Closing fragment
11-04 20:46 60m -16 / - EA2CD - / - 3 ✓ Closing fragment
11-04 20:45 60m -12 / - SP2EWQ - / -4 2 ✓ Closing fragment
11-04 20:43 60m -9 / -2 GS8VL -13 / +9 4 ✓ Full exchange observed
11-04 20:41 60m -12 / - SP2EWQ - / -3 2 Partial capture
11-04 20:40 60m -10 / - LZ2VQ - / -6 2 ✓ Closing fragment
11-04 20:37 60m -12 / - UN7EG - / -10 4 ✓ Closing fragment
11-04 20:34 60m -16 / - SP1RKT - / -9 2 ✓ Closing fragment
11-04 20:32 60m -7 / -6 VE1YX -16 / -1 6 ✓ Full exchange observed
11-04 20:31 60m -10 / - SP9D - / -4 2 ✓ Closing fragment
11-04 20:31 60m -12 / -16 ON7GB -10 / -20 8 ✓ Full exchange observed
11-04 20:30 60m -10 / - S55X - / -4 3 ✓ Closing fragment
11-04 15:47 60m -9 / - PA2MRK - / -22 3 ✓ Closing fragment
11-04 15:43 60m +2 / - G3WAY - / -7 3 ✓ Closing fragment
11-04 15:41 60m +4 / -5 DK1XAM -8 / -2 4 ✓ Full exchange observed
11-04 15:40 60m - / 0 LZ911TD -8 / - 2 Partial capture
11-04 15:39 60m -2 / - <...> - / -12 5 Partial capture
11-04 15:31 60m -5 / -1 DL2USR -6 / - 4 ✓ Closing observed
11-02 23:21 80m +6 / -13 YT2FA -4 / -3 3 ✓ Full exchange observed
11-02 23:20 80m +9 / -5 EB3JT -12 / -12 5 ✓ Full exchange observed
11-02 23:18 80m +16 / -6 SP5JMA +3 / -3 5 ✓ Full exchange observed
11-02 23:18 80m +18 / - DA6KU -14 / -13 3 ✓ Closing observed
11-02 23:17 80m +13 / - YU4RBL - / -24 2 ✓ Closing fragment
11-02 23:13 80m +10 / - CU6AB - / - 3 Partial capture
11-01 22:09 80m +3 / - A92AE - / - 2 Partial capture
11-01 07:43 40m 0 / -8 DG3TF -14 / 0 4 ✓ Full exchange observed
10-30 03:16 80m +8 / - DL40RIG - / - 3 Partial capture
10-29 02:55 80m +17 / -7 K1RTA -8 / -18 5 ✓ Full exchange observed
10-29 02:49 80m +22 / -14 NP3RK -16 / -20 4 ✓ Full exchange observed
10-27 22:07 40m -6 / - FR5CN - / - 2 Partial capture
10-18 22:15 80m +15 / -16 R5AT -7 / - 4 ✓ Closing observed
10-18 22:13 80m +10 / 0 DK3WN -1 / -1 5 ✓ Full exchange observed
10-18 22:12 80m +14 / +1 DO5HB -8 / +3 5 ✓ Full exchange observed
10-18 22:10 80m +11 / - EA9ADC - / - 3 Partial capture
10-18 00:14 40m - / -12 UK8OM +6 / - 2 ✓ Closing fragment
10-05 22:16 80m +3 / - TT1GD - / - 8 Partial capture
10-03 00:41 80m +7 / - DL1HTB -15 / -1 3 ✓ Closing observed
10-03 00:41 80m +8 / +3 R3ICU -3 / -18 6 ✓ Full exchange observed
10-03 00:12 80m +12 / - V26K -14 / -13 55 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

60m
UTC    dB Audio  Message
225445  +5 2588  DJ0MAB HB9EBM -17
225500  -5 2588  HB9EBM DJ0MAB R-19
225515  +4 2588  DJ0MAB HB9EBM RR73
225530  -7 2588  HB9EBM DJ0MAB R-19
225545  +1 2588  DJ0MAB HB9EBM RR73
225645  +4 2588  OM3PR HB9EBM -03 (x2)
225800  +7 2588  OZ7FOC HB9EBM JN37 (x2)
225900  +6 2588  OK1BN HB9EBM JN37 (x2)
225945  +2 1364  HB9EBM OK1BN +10
230000  +2 2588  OK1BN HB9EBM R+19
230015  -3 1364  HB9EBM OK1BN RR73
230030  +6 2588  OK1BN HB9EBM 73
80m
UTC    dB Audio  Message
231915 +14 2779  SP5JMA HB9EBM -03
231930  +6 1135  HB9EBM SP5JMA R-06
231945 +18 2779  SP5JMA HB9EBM RR73
232000  -2 1134  HB9EBM SP5JMA 73
232000 -12 2779  HB9EBM EB3JT JN01
232015  +9 2779  EB3JT HB9EBM -12
232030 -13 2778  HB9EBM EB3JT R-05
232045  +9 2779  EB3JT HB9EBM RR73
232100 -11 2778  HB9EBM EB3JT 73
232145  +9 2779  YT2FA HB9EBM -03
232200  -4 1229  HB9EBM YT2FA R-13
232215  +3 2779  YT2FA HB9EBM RR73
224045 +11 2538  AP5ARS HB9EBM JN37 (x3)
40m
UTC    dB Audio  Message
220600 +10 2922  HL3KPJ HB9EBM 73 (x2)
220700 +19 2922  BI3UPU HB9EBM -20 (x2)
220830 +18 2923  JA5AQC HB9EBM -16 (x2)
192130 +16 2887  VR2VDD HB9EBM JN37
001445  +5  564  HB9EBM UK8OM -12 (x2)
220745 -10 2428  FR5CN HB9EBM JN37 (x2)
074330  -1 2446  DG3TF HB9EBM JN37
074345 -14 1901  HB9EBM DG3TF -08
074400  +0 2446  DG3TF HB9EBM R+00 (x2)
160m
UTC    dB Audio  Message
165845 -15 1902  RI1FJZ HB9EBM JN37 (x5)
183200 -11 1007  HB9EBM RI1FJZ -07
183215 +12  814  RI1FJZ HB9EBM R-15
183230 -10 1007  HB9EBM RI1FJZ RR73
183245 +10  814  RI1FJZ HB9EBM 73
10m
UTC    dB Audio  Message
132200  -4 2089  HB9EBM DO7DE JN49
132215  -3 2938  IZ8PPI HB9EBM R-06
132315  -3 2937  F5SDD HB9EBM -03 (x2)
132445  +1 2937  M0SCK HB9EBM RR73
132500 -12 2380  HB9EBM DO9BAU JO62
132515  +3 2936  DO9BAU HB9EBM +09 (x2)
081500 -11 2637  HB9EBM IK4IDF R-08
081745  +2 2929  UR9QQ HB9EBM -05 (x2)
083500 +14 2929  <...> HB9EBM JN37 (x3)
102730  -9  431  HB9EBM DF7EF JO30
20m
UTC    dB Audio  Message
191800 +21 2861  OK2VCR HB9EBM RR73
191900 +20 2860  JE7BKV HB9EBM RR73
202215 -11 2583  BA7SAY HB9EBM -14
202545 -11 2582  BA8BLK HB9EBM R-16
203045  -2 2582  BG7BVI HB9EBM R-14 (x2)
203200  -1 2582  HB9EBM M7LYG IO93
165645 +11 2781  <...> HB9EBM JN37 (x8)

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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