UB8CRM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving UB8CRM, decoded by SO8OO in southeastern Poland. 15 FT8 messages attributed to this token as transmitter, on 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-06-19.
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 15 FT8 messages attributed to UB8CRM as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -19 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 15 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- -19 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 0.
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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with UB8CRM in decoded directed-looking exchanges:
Most frequent locator attributed to UB8CRM
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
- MO06 · 10 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,670 km (approx.)
- Last such locator decoded
- 2026-06-19 15:49 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 | UB8CRM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-17 16:44 | 40m | - / -6 | RA9SJG | -16 / - | 2 | ✓ Closing fragment |
| 09-17 16:24 | 40m | - / -17 | UA6ANQ | 0 / - | 2 | ✓ Closing fragment |
| 09-17 05:39 | 40m | - / -21 | R3KJF | -4 / - | 3 | ✓ Closing fragment |
| 09-16 14:21 | 40m | - / -5 | UB4FGK | -16 / - | 4 | ✓ Closing fragment |
| 09-16 14:15 | 40m | - / - | RZ6AOJ | -8 / - | 2 | ✓ Closing fragment |
| 09-15 17:14 | 40m | - / -4 | R2SN | +2 / - | 2 | ✓ Closing fragment |
| 09-15 17:03 | 40m | - / - | R3KHR | +5 / - | 3 | Partial capture |
| 09-15 16:51 | 40m | - / -10 | R1WBW | -1 / - | 3 | ✓ Closing fragment |
| 09-15 16:50 | 40m | - / -10 | UA3NFG | -17 / - | 2 | ✓ Closing fragment |
| 09-15 16:41 | 40m | - / -13 | RJ6ON | +1 / - | 2 | ✓ Closing fragment |
| 09-14 17:39 | 40m | - / -18 | UB6OAJ | -3 / - | 3 | ✓ Closing fragment |
| 09-14 17:37 | 40m | - / -10 | RL3FA | -2 / - | 3 | ✓ Closing fragment |
| 09-14 17:28 | 40m | - / - | R6ZEJ | +7 / - | 2 | Partial capture |
| 09-14 17:27 | 40m | - / - | R2ASY | -12 / - | 2 | Partial capture |
| 09-14 17:25 | 40m | - / -4 | R3UAF | -3 / - | 3 | ✓ Closing fragment |
| 09-14 17:22 | 40m | - / -22 | RU3OZ | 0 / - | 5 | ✓ Closing fragment |
| 09-14 17:20 | 40m | - / -14 | RG5A | +3 / - | 3 | ✓ Closing fragment |
| 09-14 17:17 | 40m | - / -6 | RA3TVW | -3 / - | 3 | ✓ Closing fragment |
| 09-14 05:36 | 40m | - / -16 | RX3DQX | -3 / - | 3 | Partial capture |
| 09-14 03:48 | 40m | - / - | R4ML | -10 / - | 2 | ✓ Closing fragment |
| 09-14 03:35 | 40m | - / -12 | RT7N | -6 / - | 2 | Partial capture |
| 09-14 03:35 | 40m | - / -10 | R5AV | 0 / - | 3 | ✓ Closing fragment |
| 08-22 05:30 | 20m | - / - | RA3ZDU | -2 / - | 4 | Partial capture |
| 08-10 18:16 | 20m | - / -22 | G3VCQ | +10 / - | 3 | Partial capture |
| 08-06 19:11 | 20m | - / -16 | R3UAX | -3 / - | 2 | ✓ Closing fragment |
| 07-31 03:57 | 20m | - / -14 | RT6C | +20 / - | 2 | ✓ Closing fragment |
| 07-31 03:24 | 20m | - / -8 | IK0FUX | +9 / - | 2 | ✓ Closing fragment |
| 07-29 18:19 | 20m | - / -15 | 9A6NTK | -4 / - | 2 | ✓ Closing fragment |
| 07-19 18:02 | 20m | - / -19 | RX4SA | -8 / - | 2 | ✓ Closing fragment |
| 07-19 17:55 | 20m | - / +2 | <...> | -14 / - | 2 | Partial capture |
| 07-18 02:56 | 20m | - / -12 | RV6BH | -10 / - | 2 | ✓ Closing fragment |
| 07-07 18:39 | 20m | - / +1 | RL2Y | -15 / - | 2 | Partial capture |
| 07-07 17:59 | 20m | - / -13 | RA0SCA | -9 / - | 2 | Partial capture |
| 06-30 17:59 | 20m | - / -14 | GB2WWA | +8 / - | 2 | Partial capture |
| 06-27 18:52 | 40m | - / -5 | R3DFC | -6 / - | 2 | ✓ Closing fragment |
| 06-27 18:51 | 40m | - / -13 | UA3PTK | -14 / - | 2 | ✓ Closing fragment |
| 06-27 18:33 | 40m | - / - | RA3BY | -18 / - | 2 | Partial capture |
| 06-24 14:36 | 20m | - / -14 | UN0GY | -8 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 141845 -15 833 UB8CRM UB4LDD -20 142145 -16 2143 UB8CRM UB4FGK LO33 (x4) 053900 +0 979 UB8CRM R3KJF KO91 (x3) 162445 +0 1896 UB8CRM UA6ANQ -17 (x2) 162845 -10 2241 UB8CRM RA4ADF -11 163415 -16 1792 UB8CRM UB4CLH -20 163445 +1 738 UB8CRM R6CW -13 164430 -16 1981 UB8CRM RA9SJG -06 (x2)
UTC dB Audio Message 032400 +9 2962 UB8CRM IK0FUX -08 (x2) 035545 -4 1611 UB8CRM RX6ABW RR73 035745 +20 2786 UB8CRM RT6C -14 (x2) 191130 -4 2017 UB8CRM R3UAX -16 (x2) 181630 +6 2255 UB8CRM G3VCQ -22 (x3) 180930 -14 1594 UB8CRM IZ6BYS R-15 053030 -2 2755 UB8CRM RA3ZDU KO90 (x4)
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee