SM5CBN — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SM5CBN, decoded by SO8OO in southeastern Poland. 159 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 8 UTC dates in the available aggregate history. Observed between 2026-08-17 and 2026-09-13.
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 159 FT8 messages attributed to SM5CBN as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (57%), followed by 80 m (43%). Several six-hour UTC windows tied for the largest share (94%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (77%); the estimated median was -3 dB.
Overview
Bands
Last attributed message: 2026-09-13 19:54 UTC
Observed FT8 message patterns
- Attributed sample
- 159 messages
- Active dates
- 8 UTC dates
- Estimated median S/N
- -3 dB
- Estimated 10th-90th percentile
- -12 to +5 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 30, strong (≥ -8 dB) 122.
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 SM5CBN 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 SM5CBN
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
- JO78 · 88 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,048 km (approx.)
- Last such locator decoded
- 2026-09-13 19:54 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 | SM5CBN S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-14 20:47 | 40m | - / +8 | DJ0MAB | +2 / - | 3 | ✓ Closing fragment |
| 09-13 19:53 | 40m | -12 / - | PD2MAC/P | - / - | 2 | Partial capture |
| 09-13 19:53 | 40m | - / - | M1EAG | -4 / - | 2 | Partial capture |
| 09-13 19:45 | 40m | -7 / - | G7VGY/P | -24 / -10 | 6 | ✓ Closing observed |
| 09-13 19:36 | 40m | -1 / -3 | IK1MJK/P | -2 / +1 | 9 | ✓ Full exchange observed |
| 09-13 19:34 | 40m | -2 / +7 | PD2MAC/P | -9 / - | 10 | Partial capture |
| 09-13 19:31 | 40m | -1 / - | 8Z1IT | - / - | 5 | Partial capture |
| 09-13 19:29 | 40m | -5 / - | GG4DPI/P | - / - | 3 | Partial capture |
| 09-13 19:27 | 40m | -8 / -2 | DK8HC | -2 / -1 | 4 | ✓ Full exchange observed |
| 09-13 19:26 | 40m | -2 / - | EX7CQ | 0 / -1 | 3 | ✓ Closing observed |
| 09-13 19:23 | 40m | -7 / -1 | PD2MAC/P | -11 / -25 | 6 | ✓ Full exchange observed |
| 09-13 19:21 | 40m | -6 / - | EA3IWJ/P | - / -23 | 2 | ✓ Closing fragment |
| 09-13 19:13 | 40m | -2 / - | DF9HT/P | -8 / - | 5 | ✓ Closing observed |
| 09-12 13:37 | 40m | -14 / - | LB5WB | - / -8 | 2 | ✓ Closing fragment |
| 09-12 13:33 | 40m | -10 / - | OH2DJY | -12 / -9 | 9 | ✓ Closing observed |
| 08-31 22:35 | 80m | -4 / - | IU7UTX | -20 / -17 | 6 | Partial capture |
| 08-31 22:30 | 80m | -9 / - | 4X1UF | - / +4 | 5 | ✓ Closing fragment |
| 08-31 22:21 | 80m | - / - | IU7UTX | -21 / - | 2 | Partial capture |
| 08-31 22:18 | 80m | - / - | IU5HIU | -20 / - | 2 | Partial capture |
| 08-31 22:15 | 80m | +3 / - | <...> | - / - | 7 | Partial capture |
| 08-31 22:14 | 80m | - / +3 | EK/RX3DPK | -11 / - | 7 | Partial capture |
| 08-31 21:48 | 80m | +9 / -8 | 9A3TGY | -7 / - | 6 | ✓ Closing observed |
| 08-31 21:45 | 80m | - / +5 | EK/RX3DPK | -9 / - | 4 | Partial capture |
| 08-27 22:05 | 40m | -13 / - | EA8UP | -12 / +4 | 4 | ✓ Closing observed |
| 08-25 21:20 | 40m | -6 / - | HZ1TT | - / - | 5 | Partial capture |
| 08-20 23:06 | 40m | -18 / - | D2UY | - / - | 3 | Partial capture |
| 08-20 23:03 | 40m | -14 / - | OA4ENG | - / -8 | 4 | ✓ Closing fragment |
| 08-20 22:48 | 40m | 0 / - | OA4ENG | - / - | 6 | Partial capture |
| 08-20 22:34 | 40m | -2 / - | SN1A | - / 0 | 2 | ✓ Closing fragment |
| 08-20 22:34 | 40m | - / - | UR9QQ | 0 / - | 5 | Partial capture |
| 08-20 22:32 | 40m | -6 / - | VP2MAA | - / - | 2 | Partial capture |
| 08-20 22:03 | 40m | -8 / - | 8B81JG | - / -8 | 3 | Partial capture |
| 08-20 22:02 | 40m | -8 / - | <...> | - / - | 2 | Partial capture |
| 08-20 21:53 | 40m | -6 / - | BV2SR | - / - | 7 | Partial capture |
| 08-20 21:48 | 40m | -8 / - | EN35UKR | - / -17 | 2 | Partial capture |
| 08-19 20:54 | 60m | - / -8 | F5PBG | -18 / - | 3 | ✓ Closing fragment |
| 08-18 22:48 | 80m | +7 / -9 | GI4DOH | -14 / -15 | 5 | ✓ Full exchange observed |
| 08-18 22:44 | 80m | +3 / - | <...> | - / - | 3 | Partial capture |
| 08-18 22:11 | 80m | +6 / - | D2UY | - / -18 | 12 | Partial capture |
| 08-18 22:05 | 80m | -6 / +2 | UA4FKT | +11 / +6 | 6 | ✓ Full exchange observed |
| 08-18 22:03 | 80m | -2 / - | CX2ACB | - / -23 | 5 | ✓ Closing fragment |
| 08-18 21:54 | 80m | -5 / -5 | LY8O | +10 / +2 | 5 | ✓ Full exchange observed |
| 08-17 22:25 | 80m | +1 / -10 | HB3YBG | -3 / -5 | 4 | ✓ Full exchange observed |
| 08-17 22:23 | 80m | - / - | CT7AUT | -14 / - | 3 | Partial capture |
| 08-17 22:23 | 80m | +2 / +2 | DG4BZ | -1 / - | 3 | ✓ Closing observed |
| 08-17 22:23 | 80m | +1 / +3 | MM0KQC | -8 / - | 5 | ✓ Closing observed |
| 08-17 22:22 | 80m | +1 / -2 | DO6JSA | -1 / -10 | 12 | ✓ Full exchange observed |
| 08-17 22:22 | 80m | +2 / -1 | DO5PY | +1 / +6 | 5 | ✓ Full exchange observed |
| 08-17 22:22 | 80m | - / - | UR3QCB | -4 / - | 2 | Partial capture |
| 08-17 22:19 | 80m | -2 / - | F1HSY | - / -8 | 4 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 194745 -1 1597 G7VGY/P SM5CBN JO78 (x2) 194830 -24 2131 SM5CBN G7VGY/P RR73 194845 -4 1597 G7VGY/P SM5CBN 73 195300 -3 995 SM5CBN M1EAG IO92 (x2) 195345 -11 1126 PD2MAC/P SM5CBN JO78 (x2) 204245 -24 1895 SM5CBN D44TWO -06 204615 -11 835 SM5CBN PG5FRL JO22 204715 +4 1898 SM5CBN DJ0MAB JN49 (x3) 220100 -16 2114 SM5CBN SP/N1AH -07 220545 -10 549 SM5CBN KP4LCA -08
UTC dB Audio Message 221845 +2 1151 <...> SM5CBN JO78 221900 -20 1263 SM5CBN IU5HIU JN53 222130 -20 1502 SM5CBN IU7UTX JN80 (x2) 223045 -12 1150 4X1UF SM5CBN JO78 (x5) 223500 -19 1502 SM5CBN IU7UTX JN80 (x2) 223545 -14 1151 IU7UTX SM5CBN -17 (x4)
UTC dB Audio Message 205400 -17 1664 SM5CBN F5PBG IN78 (x3)
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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