UB4CKD — 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 UB4CKD, decoded by SO8OO in southeastern Poland. 869 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 42 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-12.
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 869 FT8 messages attributed to UB4CKD as the transmitting token by decoded message structure across 42 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (77%), followed by 40 m (23%). The busiest six-hour window was 12:00-18:00 UTC, containing 44% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.
Overview
Bands
Last attributed message: 2026-09-12 13:18 UTC
Observed FT8 message patterns
- Attributed sample
- 869 messages
- Active dates
- 42 UTC dates
- Estimated median S/N
- -8 dB
- Estimated 10th-90th percentile
- -18.7 to +7 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 179, moderate (-15 to -9 dB) 233, strong (≥ -8 dB) 457.
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 UB4CKD 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 UB4CKD
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
- LO32 · 528 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,769 km (approx.)
- Last such locator decoded
- 2026-08-22 08:22 UTC
Other locator fields attributed to this token: LO30 (8).
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 | UB4CKD S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-28 03:35 | 40m | - / -21 | R6SBN | -2 / - | 6 | Partial capture |
| 10-28 01:28 | 40m | - / -17 | RZ6ALZ | -15 / - | 2 | ✓ Closing fragment |
| 10-27 23:59 | 40m | - / -13 | R2SL | +16 / - | 2 | ✓ Closing fragment |
| 10-21 20:36 | 40m | - / -17 | YO9HP | 0 / - | 2 | ✓ Closing fragment |
| 10-16 12:09 | 40m | - / -11 | HG0NPJ | -1 / - | 7 | Partial capture |
| 09-22 07:38 | 40m | - / -2 | UB6ZDJ | -19 / - | 2 | ✓ Closing fragment |
| 09-22 07:30 | 40m | - / -14 | R7KEO | -10 / - | 3 | Partial capture |
| 09-18 07:39 | 40m | - / -6 | EU7FBB | +6 / - | 2 | ✓ Closing fragment |
| 09-12 07:38 | 40m | - / -9 | S59A | +6 / - | 7 | Partial capture |
| 09-05 10:26 | 40m | - / +3 | R1943OD | -23 / - | 2 | Partial capture |
| 09-03 12:52 | 40m | - / -11 | RA3LJ | -14 / - | 3 | ✓ Closing fragment |
| 08-30 06:30 | 40m | - / -7 | RW3YS | -4 / - | 2 | ✓ Closing fragment |
| 08-30 06:28 | 40m | - / -11 | EU4U | +2 / - | 2 | ✓ Closing fragment |
| 08-30 06:05 | 20m | -5 / - | RL2F | - / -4 | 3 | ✓ Closing fragment |
| 08-30 06:02 | 20m | -4 / - | RM6OS | - / 0 | 5 | Partial capture |
| 08-30 06:01 | 20m | -6 / - | 9A5CY | - / -7 | 2 | ✓ Closing fragment |
| 08-30 05:57 | 20m | -5 / - | UA9KBC | - / - | 4 | Partial capture |
| 08-30 05:48 | 20m | -6 / - | R9JAU | - / 0 | 3 | Partial capture |
| 08-30 05:47 | 20m | -5 / -8 | EA3NT | +16 / - | 18 | ✓ Closing observed |
| 08-30 05:37 | 40m | - / -8 | R6FMK | -15 / - | 3 | ✓ Closing fragment |
| 08-22 08:22 | 20m | - / -9 | RZ7KR | -3 / - | 3 | Partial capture |
| 08-22 08:16 | 20m | -2 / - | R6AM | - / -5 | 2 | Partial capture |
| 08-22 08:12 | 20m | -1 / - | RU0AX | - / - | 6 | Partial capture |
| 08-22 08:09 | 20m | -4 / - | RA9YTI | - / - | 6 | Partial capture |
| 08-22 08:07 | 20m | +3 / -3 | R6DOB/M | -17 / -6 | 4 | ✓ Full exchange observed |
| 08-22 08:05 | 20m | +5 / +2 | IK4LZH | +19 / +2 | 5 | ✓ Full exchange observed |
| 08-21 16:22 | 40m | - / - | DL1CC | -5 / - | 6 | Partial capture |
| 08-21 16:21 | 40m | -14 / - | R1AI | - / -8 | 4 | ✓ Closing fragment |
| 08-21 16:12 | 40m | -8 / - | RT9YO | - / +4 | 4 | ✓ Closing fragment |
| 08-21 15:59 | 40m | -8 / - | UA9UFJ | - / - | 6 | Partial capture |
| 08-21 15:57 | 40m | -6 / - | R9DT | - / - | 4 | Partial capture |
| 08-21 15:51 | 40m | -5 / - | R6LFO | - / -1 | 3 | ✓ Closing fragment |
| 08-21 07:17 | 20m | -2 / - | R6LKG | - / - | 6 | Partial capture |
| 08-21 05:00 | 40m | -20 / - | RK3AW | - / -8 | 2 | ✓ Closing fragment |
| 08-21 04:58 | 40m | -14 / +2 | R3DFC | -17 / - | 3 | ✓ Closing observed |
| 08-18 16:41 | 40m | -12 / -2 | DL5MK | +3 / - | 4 | ✓ Closing observed |
| 08-17 13:50 | 20m | - / -7 | F4PCM | -12 / - | 2 | ✓ Closing fragment |
| 08-17 08:03 | 20m | - / - | DK7UY | -12 / - | 2 | Partial capture |
| 08-17 07:59 | 20m | - / - | DL1R | -5 / - | 8 | Partial capture |
| 08-17 07:59 | 20m | - / -14 | PA3BMB | -14 / - | 3 | ✓ Closing fragment |
| 08-17 07:47 | 20m | - / +4 | R7NO | -2 / - | 3 | Partial capture |
| 08-17 07:44 | 20m | - / - | CT7AUT | -20 / - | 2 | Partial capture |
| 08-17 07:42 | 20m | - / -6 | F5HNQ | -12 / - | 3 | ✓ Closing fragment |
| 08-17 07:42 | 20m | - / - | OE7LVI | -18 / - | 3 | Partial capture |
| 08-17 07:32 | 20m | - / - | 2W0YOX | -14 / - | 2 | Partial capture |
| 08-17 07:30 | 20m | - / - | DK4RH | -12 / - | 3 | Partial capture |
| 08-16 07:09 | 20m | - / - | EA3IDY | +11 / - | 9 | Partial capture |
| 08-16 07:07 | 20m | - / -1 | RL6MT | -14 / - | 2 | ✓ Closing fragment |
| 08-16 06:56 | 20m | -11 / - | I4WQH | -13 / - | 2 | ✓ Closing observed |
| 08-16 06:34 | 20m | -16 / - | RW3C/P | - / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 121230 +0 2379 UB4CKD HG0NPJ -17 124200 -24 1690 UB4CKD R6FFB LN14 203600 +1 790 UB4CKD YO9HP -17 (x2) 235915 +12 2759 UB4CKD R2SL -13 (x2) 012830 -14 2183 UB4CKD RZ6ALZ -17 (x2) 033545 -9 489 UB4CKD R6SBN KN86 (x6) 044630 -6 2690 UB4CKD EK/RX3DPK -11
UTC dB Audio Message 055645 +18 696 UB4CKD EA3NT 73 055745 -9 1574 UA9KBC UB4CKD LO30 (x4) 060145 -6 2339 9A5CY UB4CKD -07 (x2) 060245 -5 989 RM6OS UB4CKD R+00 (x5) 060545 -4 2033 RL2F UB4CKD LO30 (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.
CW
No CW receptions recorded for this callsign in the last 30 days.
Explore CW reception at SO8OOFT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee