OH5BM — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving OH5BM, decoded by SO8OO in southeastern Poland. 1,356 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 68 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-23.
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 1,356 FT8 messages attributed to OH5BM as the transmitting token by decoded message structure across 68 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (61%), followed by 160 m (27%) and 60 m (5%). Most decodes (50%) fell within the six-hour window 00:00-06:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (63%); the estimated median was -4 dB.
Overview
Bands
Last attributed message: 2026-10-23 17:24 UTC
Observed FT8 message patterns
- Attributed sample
- 1,356 messages
- Active dates
- 68 UTC dates
- Estimated median S/N
- -4 dB
- Estimated 10th-90th percentile
- -18 to +12 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 207, moderate (-15 to -9 dB) 301, strong (≥ -8 dB) 848.
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 OH5BM 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 OH5BM
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
- KP41 · 841 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,361 km (approx.)
- Last such locator decoded
- 2026-10-23 17:23 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 | OH5BM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-23 17:26 | 80m | - / - | RA0SCA | -20 / - | 4 | Partial capture |
| 10-23 17:25 | 80m | - / +3 | R2AVW | 0 / - | 3 | Partial capture |
| 10-23 17:21 | 80m | +11 / - | ZL4KX | - / -16 | 8 | ✓ Closing fragment |
| 10-23 17:19 | 160m | - / - | RA4Y | -21 / - | 2 | Partial capture |
| 10-23 17:18 | 160m | +3 / - | OZ9FF | - / -14 | 3 | ✓ Closing fragment |
| 10-22 20:20 | 160m | - / - | RK3BM | 0 / - | 2 | Partial capture |
| 10-22 20:16 | 160m | +8 / -7 | UA4CKN | -24 / -6 | 5 | ✓ Full exchange observed |
| 10-22 20:14 | 160m | +8 / -6 | EX7DY | -14 / -9 | 5 | ✓ Full exchange observed |
| 10-22 18:49 | 160m | -10 / - | EX7DY | - / -20 | 3 | Partial capture |
| 10-22 18:43 | 160m | +7 / - | EX7DY | - / - | 7 | Partial capture |
| 10-21 14:53 | 80m | -3 / - | RZ0SW | - / -12 | 2 | ✓ Closing fragment |
| 10-21 14:52 | 80m | -1 / - | RA9YE | - / -11 | 2 | ✓ Closing fragment |
| 10-21 14:50 | 80m | -3 / +2 | UA3UGW | -16 / - | 6 | ✓ Full exchange observed |
| 10-21 14:49 | 80m | -4 / - | RA9YHK | - / -2 | 2 | ✓ Closing fragment |
| 10-21 14:49 | 80m | -3 / - | DO2BBC | -14 / -7 | 3 | ✓ Closing observed |
| 10-21 14:48 | 80m | -4 / - | YB1LIN | - / -23 | 2 | ✓ Closing fragment |
| 10-21 14:45 | 80m | -10 / - | BG5IOW | - / -11 | 4 | ✓ Closing fragment |
| 10-20 21:09 | 160m | -12 / - | 7P8GE | - / - | 2 | Partial capture |
| 10-19 06:05 | 80m | - / - | GI4OGS | -10 / - | 2 | Partial capture |
| 10-19 06:02 | 80m | -11 / - | OR82CLM | - / 0 | 3 | Partial capture |
| 10-18 17:52 | 60m | -16 / +4 | OH3MB | -5 / -5 | 6 | ✓ Full exchange observed |
| 10-18 17:50 | 60m | -13 / -4 | ER1CW | -10 / -6 | 5 | ✓ Full exchange observed |
| 10-18 17:42 | 60m | -14 / - | S56P | - / -9 | 12 | Partial capture |
| 10-18 17:28 | 60m | -12 / - | S79VU | - / - | 6 | Partial capture |
| 10-18 17:24 | 60m | -6 / - | S79VU | - / - | 2 | Partial capture |
| 10-18 04:34 | 160m | -11 / -11 | HF5A | +6 / +3 | 5 | ✓ Full exchange observed |
| 10-18 04:28 | 60m | - / -7 | DL5DQZ | -19 / - | 2 | ✓ Closing fragment |
| 10-18 03:59 | 160m | -15 / - | KP2B | - / - | 4 | Partial capture |
| 10-18 03:42 | 80m | -8 / - | TA4SSK | - / -3 | 7 | ✓ Closing fragment |
| 10-18 03:33 | 160m | -13 / - | KP2B | - / - | 4 | Partial capture |
| 10-18 03:22 | 160m | -10 / - | PP5JR | - / - | 10 | Partial capture |
| 10-18 03:16 | 160m | -8 / - | KP4U | - / - | 9 | Partial capture |
| 10-17 20:58 | 160m | -23 / - | JH4ADV | - / - | 5 | Partial capture |
| 10-17 20:56 | 160m | -21 / - | LA9JKA | - / +8 | 2 | ✓ Closing fragment |
| 10-17 20:54 | 160m | - / - | RA3LBW | -12 / - | 2 | ✓ Closing fragment |
| 10-17 20:51 | 160m | - / +2 | OZ0A | 0 / - | 3 | ✓ Closing fragment |
| 10-17 20:48 | 160m | -24 / - | 4J3DJ | - / - | 2 | Partial capture |
| 10-14 04:55 | 80m | -21 / - | PJ2/W4IPC | - / - | 2 | Partial capture |
| 10-14 04:45 | 80m | -16 / - | PJ2/W4IPC | - / - | 2 | Partial capture |
| 10-14 04:27 | 160m | -23 / - | <...> | - / - | 2 | Partial capture |
| 10-14 03:00 | 80m | +1 / - | VP2MAW | - / - | 2 | Partial capture |
| 10-14 02:53 | 80m | -12 / - | GM6URC | - / +1 | 3 | ✓ Closing fragment |
| 10-14 02:33 | 80m | -7 / - | RT4A/QRP | - / - | 11 | Partial capture |
| 10-14 02:30 | 80m | +10 / - | DL/AD2LX | - / - | 3 | Partial capture |
| 10-13 20:12 | 160m | +6 / - | 9H1ES | - / - | 9 | Partial capture |
| 10-13 20:06 | 160m | -6 / -9 | OK7BB | +5 / +8 | 7 | ✓ Full exchange observed |
| 10-13 20:06 | 160m | - / - | SQ2BXI | -2 / - | 4 | Partial capture |
| 10-13 02:09 | 60m | - / -15 | HB9ALO | -6 / - | 3 | ✓ Closing fragment |
| 10-13 01:57 | 160m | -12 / - | OD5XX | - / +3 | 8 | Partial capture |
| 10-13 01:47 | 80m | +2 / -5 | DL4DP | +1 / -9 | 5 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 172115 +10 1733 ZL4KX OH5BM KP41 (x8) 172530 -1 757 OH5BM R2AVW +03 172600 -16 1733 OH5BM RA0SCA OO06 172600 +1 757 OH5BM R2AVW +03 172630 -19 1733 OH5BM RA0SCA OO06 172630 +1 757 OH5BM R2AVW +03 172700 -24 1734 OH5BM RA0SCA OO06 (x2)
UTC dB Audio Message 201515 +15 1292 EX7DY OH5BM R-09 (x2) 201630 -23 1332 OH5BM UA4CKN -07 (x2) 201815 +9 1292 UA4CKN OH5BM R-06 (x2) 201930 -24 1332 OH5BM UA4CKN RR73 202000 +7 1377 OH5BM UR3LM KN89 202000 +1 1292 OH5BM RK3BM KO85 (x2) 171800 +6 1732 OZ9FF OH5BM KP41 (x3) 171915 -21 1348 OH5BM RA4Y LO35 (x2)
UTC dB Audio Message 174615 -12 1811 S56P OH5BM -09 (x4) 175000 -10 1812 ER1CW OH5BM KP41 175015 -10 1720 OH5BM ER1CW -04 175030 -13 1812 ER1CW OH5BM R-06 175045 -11 1720 OH5BM ER1CW RR73 175100 -16 1812 ER1CW OH5BM 73 175215 -6 1391 OH5BM OH3MB KP20 (x2) 175400 -16 1812 OH3MB OH5BM -05 175415 -6 1392 OH5BM OH3MB R+04 175430 -17 1812 OH3MB OH5BM RR73 175445 -4 1392 OH5BM OH3MB 73
UTC dB Audio Message 204345 -4 2122 TN8GD OH5BM KP41 (x3) 023015 -16 2418 OH5BM RO6G RR73 023145 -8 1735 OH5BM EA2DYB IN83 (x3) 023445 -10 1735 OH5BM EB3JT JN01 023445 -14 1468 OH5BM CT2HEX IM58 (x3) 183015 -16 1617 F5OYA/P OH5BM KP41 (x2) 183200 -15 1617 OH5BM EB3JT JN01 (x2)
UTC dB Audio Message 114600 +1 2580 OY5T OH5BM R-06 114700 -12 1480 F4HSB OH5BM KP41 114730 -15 1480 OY5T OH5BM R-06 (x2) 041015 -10 2796 N6GEE OH5BM KP41 (x4) 120900 -3 1537 LZ1ZF OH5BM KP41 (x2) 121100 -10 1092 OH5BM II7MGXX -07 121115 -8 1537 <...> OH5BM R-05 121130 -4 1092 OH5BM RR73; PA4RFS <...> +06 121200 -2 1538 LZ1ZF OH5BM R-14 (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.
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