DH5BO — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DH5BO, decoded by SO8OO in southeastern Poland. 2,026 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 72 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-07.
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 2,026 FT8 messages attributed to DH5BO as the transmitting token by decoded message structure across 72 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (70%), followed by 20 m (19%) and 40 m (10%). Most decodes (85%) fell within the six-hour window 16:00-22:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.
Overview
Bands
Last attributed message: 2026-10-07 20:29 UTC
Observed FT8 message patterns
- Attributed sample
- 2,026 messages
- Active dates
- 72 UTC dates
- Estimated median S/N
- -9 dB
- Estimated 10th-90th percentile
- -18 to +1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 344, moderate (-15 to -9 dB) 711, strong (≥ -8 dB) 971.
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 DH5BO 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 DH5BO
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
- JO43 · 1,175 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 964 km (approx.)
- Last such locator decoded
- 2026-10-07 20:28 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 | DH5BO S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-07 20:28 | 80m | -1 / - | R2EG | -11 / -8 | 2 | Partial capture |
| 10-07 20:28 | 80m | - / -9 | DO3LZ | -8 / - | 2 | Partial capture |
| 10-07 20:26 | 80m | -8 / - | DO9LIP | - / - | 2 | Partial capture |
| 10-07 20:25 | 80m | -8 / - | EA2EWL | - / -19 | 3 | Partial capture |
| 10-07 20:24 | 80m | -3 / -6 | DG4KAI | +6 / +9 | 5 | ✓ Full exchange observed |
| 10-07 20:20 | 80m | -6 / - | AN5CV | - / - | 3 | Partial capture |
| 10-07 20:18 | 80m | -5 / - | OE1PHS | - / -18 | 3 | ✓ Closing fragment |
| 10-07 20:16 | 80m | -3 / - | LA5ZUA | - / - | 2 | ✓ Closing fragment |
| 10-07 20:10 | 80m | -9 / - | LA5ZUA | - / -12 | 4 | Partial capture |
| 10-07 20:09 | 80m | - / - | SP3BPC | -6 / - | 5 | Partial capture |
| 10-07 20:08 | 80m | -8 / - | R8XF/M | - / +8 | 2 | Partial capture |
| 10-07 20:05 | 80m | -9 / -19 | AO5CV | -4 / -8 | 8 | ✓ Full exchange observed |
| 10-07 19:59 | 80m | - / -7 | SP4BB | +2 / - | 2 | ✓ Closing fragment |
| 10-06 20:38 | 80m | -2 / - | I4USC | - / +2 | 4 | ✓ Closing fragment |
| 10-06 20:36 | 80m | +3 / -17 | AO5CV | +12 / - | 2 | Partial capture |
| 10-06 20:33 | 80m | - / -6 | ON3PDM | -2 / - | 2 | ✓ Closing fragment |
| 10-06 20:29 | 80m | -5 / +1 | DC5IMM | +2 / +1 | 6 | ✓ Full exchange observed |
| 10-06 20:22 | 80m | - / -1 | DC0GL | -6 / - | 2 | Partial capture |
| 10-06 20:15 | 80m | -21 / - | DL1FRH | - / -18 | 3 | Partial capture |
| 10-04 17:18 | 80m | +7 / - | DL4SVA | +11 / - | 2 | Partial capture |
| 10-04 17:16 | 80m | +3 / +7 | F5OYA/P | -17 / +10 | 2 | Partial capture |
| 10-04 17:12 | 80m | -6 / - | II5GG | - / - | 3 | Partial capture |
| 10-04 16:53 | 80m | - / +6 | DO9WZ | -4 / - | 3 | Partial capture |
| 10-04 16:49 | 80m | -4 / -9 | DO3ANT | -4 / - | 4 | ✓ Closing observed |
| 10-02 20:55 | 80m | -10 / - | YU1FI | +4 / +6 | 3 | ✓ Closing observed |
| 10-02 20:50 | 80m | -11 / - | DO5ALO | - / - | 2 | Partial capture |
| 10-02 20:40 | 80m | -12 / - | DG1RTK | - / - | 2 | Partial capture |
| 10-02 20:38 | 80m | -20 / -3 | DG4BZ | -4 / - | 4 | ✓ Closing observed |
| 10-02 20:35 | 80m | -11 / - | DA6JN | -3 / - | 8 | Partial capture |
| 10-02 20:35 | 80m | - / - | ON4MAP | -16 / - | 3 | Partial capture |
| 10-02 20:30 | 80m | -4 / - | G8VHI | - / -4 | 7 | Partial capture |
| 10-01 21:14 | 80m | -11 / - | IQ9SZ/7 | - / -9 | 2 | Partial capture |
| 10-01 21:10 | 80m | -7 / -15 | IQ9SZ/2 | 0 / +5 | 3 | Partial capture |
| 10-01 21:03 | 80m | -10 / -9 | BD8ENU | +1 / -6 | 6 | Partial capture |
| 10-01 20:58 | 80m | - / +7 | EI2KM | -6 / - | 2 | ✓ Closing fragment |
| 10-01 20:55 | 80m | -11 / -21 | SX2LGT | -20 / - | 3 | ✓ Closing observed |
| 09-30 20:13 | 80m | -1 / - | SP4VIT | - / -9 | 2 | Partial capture |
| 09-30 20:12 | 80m | -4 / - | DG6SYL | - / - | 2 | Partial capture |
| 09-30 20:09 | 80m | -12 / -6 | HB10GBT | -5 / - | 3 | ✓ Closing observed |
| 09-30 20:09 | 80m | - / +6 | SQ2PQ | -1 / - | 4 | Partial capture |
| 09-30 19:59 | 80m | -11 / -8 | DO5AX | -10 / -13 | 2 | Partial capture |
| 09-30 19:55 | 80m | -5 / +10 | SA6DST | -10 / +2 | 5 | ✓ Full exchange observed |
| 09-30 19:52 | 80m | -4 / - | GW4FRX | - / - | 2 | Partial capture |
| 09-30 19:50 | 80m | - / - | IU4QQE | +1 / - | 10 | Partial capture |
| 09-30 19:42 | 80m | - / - | DL0CG | -7 / - | 3 | ✓ Closing fragment |
| 09-30 19:38 | 80m | -10 / - | F4EJL | -11 / +1 | 4 | ✓ Closing observed |
| 09-30 19:30 | 80m | -9 / - | DO8MW | - / -4 | 4 | Partial capture |
| 09-30 19:28 | 80m | -4 / - | OE7OPJ | - / -20 | 3 | Partial capture |
| 09-30 19:25 | 80m | -11 / - | DA6AX | - / - | 2 | Partial capture |
| 09-30 19:23 | 80m | - / +8 | DG4MD | -5 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 202430 +7 932 DH5BO DG4KAI R-06 202445 -2 932 DG4KAI DH5BO RR73 202500 +9 932 DH5BO DG4KAI 73 202515 -6 932 EA2EWL DH5BO -19 (x3) 202645 -9 932 DO9LIP DH5BO JO43 (x2) 202745 -5 932 CQ DH5BO JO43 202800 -8 1883 DH5BO DO3LZ -09 202815 -2 932 CQ DH5BO JO43 202830 -11 930 DH5BO R2EG KO82 202830 -8 1883 DH5BO DO3LZ -09 202845 +0 932 CQ DH5BO JO43 202915 -1 932 R2EG DH5BO -08
UTC dB Audio Message 204500 -7 1963 MM0DXL DH5BO R-09 (x2) 205730 +2 647 R4NAN DH5BO R-08 (x2) 205915 -8 433 RI1FJZ DH5BO JO43 (x3) 210600 -7 2380 SP100PKP DH5BO JO43 093530 -19 1202 DH5BO PA2RO JO22 130000 -22 1322 DH5BO IR4DCI +05 130315 -23 1632 PD0AG DH5BO R-03 (x2) 130445 -11 835 DL5WP DH5BO JO43 130500 -4 835 DH5BO DL5WP -11 130545 -13 835 DL5WP DH5BO 73
UTC dB Audio Message 153130 -15 723 DH5BO YO4NF -06 154600 -4 798 SQ5OMY DH5BO R+11 154715 -5 1546 ES4TRI DH5BO JO43 154830 -2 2446 BG2ATH DH5BO JO43 173245 -10 2557 DH5BO EA2DR RR73 173515 -4 2685 DH5BO RD0L -09 (x2) 073430 +20 2519 DH5BO YO1BRANCUSI -05 073445 -8 2519 YO1BRANCUSI DH5BO R+04 073500 +16 2519 DH5BO YO1BRANCUSI -05 073515 -6 2519 YO1BRANCUSI DH5BO R+00 073645 -6 1903 VK3ALF DH5BO JO43 130330 -6 1623 DH5BO EB3JT JN01 (x3)
UTC dB Audio Message 122630 -13 828 <...> DH5BO JO43 122815 +0 627 DN9BT DH5BO JO43 122900 -3 568 JE2GWO DH5BO JO43 (x4) 123200 -4 829 <...> DH5BO JO43 (x6) 075630 -22 1449 TA7D DH5BO R-18
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.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee