UA4LDP — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving UA4LDP, decoded by SO8OO in southeastern Poland. 560 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 45 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-16.
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 560 FT8 messages attributed to UA4LDP as the transmitting token by decoded message structure across 45 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (31%), followed by 20 m (23%) and 40 m (22%). Most decodes (84%) fell within the six-hour window 14:00-20:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -17 dB.
Overview
Bands
Last attributed message: 2026-10-16 18:57 UTC
Observed FT8 message patterns
- Attributed sample
- 560 messages
- Active dates
- 45 UTC dates
- Estimated median S/N
- -17 dB
- Estimated 10th-90th percentile
- -24 to -9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 326, moderate (-15 to -9 dB) 181, strong (≥ -8 dB) 53.
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 UA4LDP 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 UA4LDP
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
- LO44 · 152 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,908 km (approx.)
- Last such locator decoded
- 2026-10-14 18:23 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 | UA4LDP S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-16 18:50 | 160m | -23 / - | R2EA/P | - / -14 | 2 | Partial capture |
| 10-16 18:12 | 80m | - / - | RK6MC | -2 / - | 2 | ✓ Closing fragment |
| 10-16 17:44 | 160m | - / -10 | RW3DC | -14 / - | 2 | ✓ Closing fragment |
| 10-16 17:30 | 160m | - / -17 | RT6C | -6 / - | 2 | ✓ Closing fragment |
| 10-16 17:21 | 160m | - / -9 | RV3LO | -3 / - | 2 | ✓ Closing fragment |
| 10-16 17:08 | 160m | - / -22 | R3LG | -8 / - | 2 | ✓ Closing fragment |
| 10-16 16:27 | 160m | - / -10 | RA1QD | -11 / - | 2 | ✓ Closing fragment |
| 10-16 16:06 | 160m | - / +3 | RA3QTT | -14 / - | 2 | ✓ Closing fragment |
| 10-16 15:59 | 160m | - / -6 | UA6ASQ | -24 / - | 2 | ✓ Closing fragment |
| 10-16 15:55 | 160m | - / -7 | YL3CW | -6 / - | 2 | ✓ Closing fragment |
| 10-15 17:21 | 80m | - / -17 | R5BM/M | -9 / - | 4 | ✓ Closing fragment |
| 10-15 16:59 | 80m | - / -9 | R9CS/P | -2 / - | 2 | ✓ Closing fragment |
| 10-14 18:24 | 80m | -22 / 0 | R3NBL | -6 / +7 | 4 | ✓ Full exchange observed |
| 10-14 18:12 | 160m | - / -23 | DK7ZT | -1 / - | 4 | Partial capture |
| 10-14 18:00 | 160m | - / +3 | RJ6B | -11 / - | 3 | ✓ Closing fragment |
| 10-14 17:55 | 160m | - / -12 | R5ZJ | -1 / - | 2 | ✓ Closing fragment |
| 10-14 17:42 | 80m | - / -9 | R5BM/M | -17 / - | 2 | Partial capture |
| 10-14 17:38 | 160m | - / - | DL8OH | +12 / - | 3 | Partial capture |
| 10-14 17:09 | 80m | -23 / - | RV6AVU | - / +6 | 2 | Partial capture |
| 10-13 15:37 | 80m | - / -9 | RV6ALM | -16 / - | 2 | ✓ Closing fragment |
| 10-13 15:19 | 40m | -19 / +1 | R8CKV | -6 / -4 | 3 | ✓ Full exchange observed |
| 10-12 18:53 | 160m | - / -2 | R3HH | +2 / - | 2 | ✓ Closing fragment |
| 10-12 18:33 | 160m | - / -6 | UA6NT | -24 / - | 2 | ✓ Closing fragment |
| 10-12 18:22 | 160m | - / -18 | RX3DTN | -17 / - | 4 | ✓ Closing fragment |
| 10-12 18:13 | 160m | -22 / - | RA4ABH | - / +3 | 2 | Partial capture |
| 10-12 18:06 | 160m | -24 / - | RU6CH | - / -25 | 2 | Partial capture |
| 10-12 17:50 | 160m | - / -18 | R3EDX | -8 / - | 6 | ✓ Closing fragment |
| 10-12 17:50 | 160m | - / -1 | RA3UEV | -1 / - | 3 | ✓ Closing fragment |
| 10-12 17:48 | 160m | - / -3 | RA3LAL | +8 / - | 2 | ✓ Closing fragment |
| 10-09 19:11 | 160m | - / -12 | DK7ZT | -5 / - | 5 | Partial capture |
| 10-09 18:56 | 160m | - / -10 | UB9MEU | -21 / - | 2 | Partial capture |
| 10-09 18:34 | 160m | - / -12 | RM5P | -10 / - | 2 | ✓ Closing fragment |
| 10-09 18:28 | 160m | -24 / - | R2FC | - / - | 2 | ✓ Closing fragment |
| 10-09 18:22 | 160m | - / -4 | R4WR | -17 / - | 2 | ✓ Closing fragment |
| 10-09 18:08 | 160m | - / -16 | UB9MEU | -22 / - | 2 | Partial capture |
| 10-09 17:48 | 160m | - / -1 | R3ZP | -18 / - | 2 | ✓ Closing fragment |
| 10-09 17:38 | 160m | - / -23 | LZ2IP | +16 / - | 4 | Partial capture |
| 10-09 17:33 | 80m | -13 / - | RC7LX | -24 / -15 | 2 | ✓ Closing observed |
| 10-09 17:18 | 160m | - / -17 | R6FFB | -20 / - | 2 | ✓ Closing fragment |
| 10-07 16:17 | 80m | - / -18 | RA9CMO | -10 / - | 3 | ✓ Closing fragment |
| 10-07 16:03 | 80m | - / -14 | R4CCE | -4 / - | 2 | ✓ Closing fragment |
| 10-05 16:40 | 80m | - / -7 | UA4QK | -4 / - | 2 | ✓ Closing fragment |
| 10-05 16:01 | 80m | - / -18 | RV3IN | +12 / - | 2 | Partial capture |
| 10-05 15:31 | 80m | - / -20 | R9CB | -10 / - | 2 | ✓ Closing fragment |
| 09-29 18:57 | 80m | -9 / - | R6AM | -22 / -23 | 3 | ✓ Closing observed |
| 09-29 18:50 | 80m | -14 / -2 | R1BDX | -5 / -5 | 4 | ✓ Full exchange observed |
| 09-29 18:46 | 80m | - / - | RU3FM | -6 / - | 3 | Partial capture |
| 09-29 18:33 | 160m | -24 / -4 | R5DT | +17 / - | 4 | ✓ Full exchange observed |
| 09-29 18:25 | 160m | - / -16 | DK7ZT | -20 / - | 2 | Partial capture |
| 09-29 18:06 | 160m | - / -1 | RV3ZK | -5 / - | 5 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 172115 +0 1077 UA4LDP RV3LO R-09 (x2) 172645 -3 1495 UA4LDP RA3SS RR73 172915 -24 1444 UA4LDP RU3DK 73 173015 -6 2485 UA4LDP RT6C R-17 (x2) 174445 -11 1618 UA4LDP RW3DC R-10 (x2) 175015 -20 1740 UA4LDP UA3GT R-03 175815 -18 1037 UA4LDP R1NI RR73 180030 -22 1444 UA4LDP RN1NEB 73 184300 -8 2496 UA4LDP R2EA/P -20 185045 -22 2015 R2EA/P UA4LDP -14 (x2) 185730 -23 1528 RV6AVU UA4LDP -10
UTC dB Audio Message 182345 -15 1913 R9CS/P UA4LDP LO44 182445 -24 1913 R3NBL UA4LDP +07 182500 -6 2181 UA4LDP R3NBL R+00 182515 -21 1913 R3NBL UA4LDP RR73 182530 -6 2181 UA4LDP R3NBL 73 165930 -1 317 UA4LDP R9CS/P R-09 (x2) 172130 -9 2431 UA4LDP <R5BM/M> R-17 (x5) 181215 -3 1549 UA4LDP RK6MC KN97 (x2) 181600 +21 2754 UA4LDP RA3LBW 73
UTC dB Audio Message 065115 -5 2139 UA4LDP SP5EXA KO02 (x6) 070915 -15 1283 UA4LDP EU1AFX KO43 (x3) 151830 -10 409 UA4LDP R6DOB/M R+01 151900 -5 350 UA4LDP RR73; RW4HD <...> +06 151945 -19 1878 R8CKV UA4LDP -04 152000 -6 3052 UA4LDP R8CKV R+01 (x2) 152130 -22 1881 UA4LDP OS4K -02
UTC dB Audio Message 121845 +0 2620 RC1BQ UA4LDP +02 (x3) 131145 -7 2012 UB1AXF UA4LDP +01 (x2) 131315 -11 2012 BG5CNL UA4LDP -05 (x2) 131445 -3 2012 CQ UA4LDP LO44 131515 -7 2012 PA3AGN UA4LDP -17 131530 -7 1179 UA4LDP PA3AGN R-10 131545 -4 2012 PA3AGN UA4LDP RR73 131845 +0 2011 MI0UFT UA4LDP -22 131930 -10 2487 UA4LDP RV9UAF -17 (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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