OH3MB — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving OH3MB, decoded by SO8OO in southeastern Poland. 3,355 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 71 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-08.
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 3,355 FT8 messages attributed to OH3MB as the transmitting token by decoded message structure across 71 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (61%), followed by 20 m (18%) and 80 m (14%). Most decodes (61%) fell within the six-hour window 13:00-19:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9.8 dB.
Overview
Bands
Last attributed message: 2026-10-08 15:47 UTC
Observed FT8 message patterns
- Attributed sample
- 3,355 messages
- Active dates
- 71 UTC dates
- Estimated median S/N
- -9.8 dB
- Estimated 10th-90th percentile
- -18.5 to 0 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 717, moderate (-15 to -9 dB) 1,131, strong (≥ -8 dB) 1,507.
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.
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with OH3MB in decoded directed-looking exchanges:
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 OH3MB
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
- KP20 · 1,656 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,192 km (approx.)
- Last such locator decoded
- 2026-10-08 15:47 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 | OH3MB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-08 15:46 | 40m | -6 / - | E74K | - / +2 | 3 | Partial capture |
| 10-08 15:39 | 40m | -3 / - | F4IFC | - / - | 3 | Partial capture |
| 10-08 15:35 | 40m | -3 / - | YT4ET | - / - | 2 | Partial capture |
| 10-08 15:26 | 40m | -6 / - | RX9ABI | - / -3 | 3 | ✓ Closing fragment |
| 10-08 15:24 | 40m | -2 / - | PA2WDR | - / +1 | 4 | Partial capture |
| 10-08 15:18 | 40m | -8 / - | E74K | - / - | 2 | Partial capture |
| 10-08 15:17 | 40m | -7 / - | SV9QWC | - / - | 2 | Partial capture |
| 10-08 15:14 | 40m | -4 / - | RC9WC | - / -11 | 3 | ✓ Closing fragment |
| 10-08 14:24 | 40m | -2 / - | DL9TZ | -22 / -4 | 5 | ✓ Closing observed |
| 10-08 14:19 | 40m | -9 / -11 | RA6FCU/P | -14 / +7 | 7 | ✓ Full exchange observed |
| 10-08 14:16 | 40m | -6 / - | UN7PNF | - / -5 | 3 | ✓ Closing fragment |
| 10-08 14:13 | 40m | -10 / - | F4MXT/P | - / -4 | 3 | Partial capture |
| 10-08 14:10 | 40m | -12 / - | F6HST | - / -2 | 4 | Partial capture |
| 10-08 14:09 | 40m | -9 / - | UB6LUR | - / +2 | 2 | Partial capture |
| 10-08 14:06 | 40m | -9 / -11 | OE8PIT | +1 / -3 | 5 | ✓ Full exchange observed |
| 10-08 14:05 | 40m | -6 / - | R4GD | - / - | 2 | Partial capture |
| 10-08 12:52 | 40m | -13 / - | DJ9FBA | - / - | 2 | Partial capture |
| 10-08 12:51 | 40m | -14 / - | BG2ATH | - / - | 2 | Partial capture |
| 10-08 12:49 | 40m | -12 / -12 | SP6SR | -7 / +7 | 6 | ✓ Full exchange observed |
| 10-08 12:46 | 40m | -9 / - | RA4M | - / -4 | 3 | ✓ Closing fragment |
| 10-08 12:44 | 40m | -16 / - | DJ6OI/P | - / +6 | 2 | Partial capture |
| 10-08 12:42 | 40m | -14 / - | M9YDD | - / - | 2 | Partial capture |
| 10-08 12:41 | 40m | -11 / - | OK8UQ | -12 / - | 2 | ✓ Closing observed |
| 10-08 12:38 | 40m | -16 / - | 9A2AA | - / - | 2 | Partial capture |
| 10-08 12:37 | 40m | -18 / - | 5P1KZX | - / - | 2 | ✓ Closing fragment |
| 10-08 12:32 | 40m | -14 / - | DL2FM | - / - | 2 | Partial capture |
| 10-08 12:31 | 40m | -14 / 0 | R80SAA | -10 / - | 4 | ✓ Full exchange observed |
| 10-08 11:32 | 40m | -15 / - | ON4FHM | - / -12 | 2 | ✓ Closing fragment |
| 10-08 11:30 | 40m | -13 / +7 | SQ2RAD | -17 / - | 3 | Partial capture |
| 10-08 11:20 | 40m | -14 / - | PA0WDN | - / - | 6 | Partial capture |
| 10-08 11:14 | 40m | -15 / - | OH6IH | - / - | 3 | ✓ Closing fragment |
| 10-08 11:04 | 40m | -16 / - | GM4GIF | - / - | 3 | Partial capture |
| 10-08 11:01 | 40m | -14 / -9 | DL9KV | -22 / +2 | 5 | ✓ Full exchange observed |
| 10-08 10:53 | 40m | -14 / - | UR3VBM | - / - | 2 | Partial capture |
| 10-08 10:50 | 40m | -12 / - | TF4M | - / -7 | 3 | ✓ Closing fragment |
| 10-08 10:47 | 40m | -16 / -13 | IQ2AAH | -14 / - | 4 | ✓ Closing observed |
| 10-08 10:42 | 40m | -14 / -8 | ES2AJ | -14 / - | 3 | ✓ Full exchange observed |
| 10-08 10:40 | 40m | -8 / - | G8TJQ | - / - | 2 | Partial capture |
| 10-08 10:37 | 40m | -10 / - | IK2ZJR | -12 / -3 | 5 | ✓ Closing observed |
| 10-08 10:35 | 40m | -15 / -8 | DL7PIA | -20 / -8 | 5 | ✓ Full exchange observed |
| 10-08 10:32 | 40m | -18 / -13 | HA7TM | 0 / +9 | 6 | ✓ Full exchange observed |
| 10-08 10:21 | 40m | -18 / - | UR3VBM | - / - | 2 | Partial capture |
| 10-08 10:16 | 40m | -20 / - | OZ1BWX | - / - | 2 | ✓ Closing fragment |
| 10-08 10:08 | 40m | -16 / - | ON5LC | - / - | 2 | Partial capture |
| 10-08 10:07 | 40m | -21 / +1 | OM3TFP | -14 / -13 | 3 | ✓ Full exchange observed |
| 10-08 10:02 | 40m | -18 / - | M7SEY | - / -11 | 3 | ✓ Closing fragment |
| 10-08 08:24 | 40m | -15 / - | F4BND | - / - | 2 | Partial capture |
| 10-08 08:22 | 40m | -13 / -9 | PD0ME | -12 / +9 | 3 | ✓ Full exchange observed |
| 10-08 08:18 | 40m | -12 / - | DG4FAA | - / -5 | 4 | ✓ Closing fragment |
| 10-08 08:15 | 40m | -9 / - | IN3ADG | - / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 152730 -7 1810 RX9ABI OH3MB R-03 (x2) 152915 -5 1811 RN8C/M OH3MB KP20 153345 -6 1810 SP4BB OH3MB KP20 153500 -4 1810 YT4ET OH3MB KP20 (x2) 153915 -2 1810 F4IFC OH3MB KP20 (x3) 154245 -5 1681 DB8BD OH3MB KP20 154345 -1 1680 PA5MB/QRP OH3MB KP20 154545 -6 1681 OK1HWS OH3MB KP20 154645 -4 1680 E74K OH3MB KP20 (x3)
UTC dB Audio Message 064930 -4 936 OH3MB DG1FK +06 064945 -10 937 DG1FK OH3MB R+01 065000 -3 936 OH3MB DG1FK RR73 065015 -12 937 DG1FK OH3MB 73 065045 -14 1307 DF0PDF OH3MB KP20 065100 -7 1306 OH3MB DF0PDF +09 065115 -16 1307 DF0PDF OH3MB R+03 065130 -7 1306 OH3MB DF0PDF RR73 065145 -15 1307 DF0PDF OH3MB 73 065245 -7 891 DH8TOM OH3MB -18 065415 -8 845 DL2KBX OH3MB KP20 065430 +1 845 OH3MB DL2KBX -03 065445 -1 845 DL2KBX OH3MB R+09 065500 +0 845 OH3MB DL2KBX RR73 065515 -6 845 DL2KBX OH3MB 73
UTC dB Audio Message 061400 -16 1827 OH6FSO OH3MB KP20 (x3) 061600 -19 1827 DA6NEL OH3MB KP20 061800 -21 1737 DO1MER OH3MB KP20 061815 -21 1971 OH3MB DO1MER +00 061830 -14 1737 DO1MER OH3MB R-01 061845 -21 1971 OH3MB DO1MER RR73 061900 -16 1737 DO1MER OH3MB 73 062045 -24 1737 DL1UDO OH3MB KP20 062145 -16 1737 ON5ZZ OH3MB KP20 (x3) 062400 -20 1737 2W0YOX OH3MB KP20 (x2)
UTC dB Audio Message 151100 -9 1427 OH3MB EA3JFE -02 (x3) 152415 -15 376 M8CMG OH3MB R+07 (x2) 163630 -15 1725 <...> OH3MB KP20 (x9) 173330 +1 1119 HS0QEO OH3MB KP20
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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