UI4I — 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 UI4I, decoded by SO8OO in southeastern Poland. 1,263 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 72 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-17.
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 1,263 FT8 messages attributed to UI4I 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 (42%), followed by 40 m (17%) and 10 m (15%). Most decodes (90%) 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 -7 dB.
Overview
Bands
Last attributed message: 2026-10-17 17:53 UTC
Observed FT8 message patterns
- Attributed sample
- 1,263 messages
- Active dates
- 72 UTC dates
- Estimated median S/N
- -7 dB
- Estimated 10th-90th percentile
- -18 to +2 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 192, moderate (-15 to -9 dB) 346, strong (≥ -8 dB) 725.
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 UI4I 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 UI4I
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
- LO43 · 635 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,903 km (approx.)
- Last such locator decoded
- 2026-10-17 17:53 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 | UI4I S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-18 11:19 | 10m | - / +6 | CT4KQ | -12 / - | 6 | ✓ Closing fragment |
| 10-18 11:18 | 10m | - / - | CS7BPG | -14 / - | 2 | Partial capture |
| 10-17 17:30 | 40m | -4 / - | M0SKT/P | - / -14 | 3 | Partial capture |
| 10-16 18:46 | 160m | - / - | S59A | +11 / - | 4 | Partial capture |
| 10-16 18:45 | 160m | -17 / - | OH2MA | - / - | 2 | Partial capture |
| 10-16 18:41 | 160m | -20 / +1 | R5AV | -7 / +2 | 4 | ✓ Full exchange observed |
| 10-16 18:23 | 160m | -22 / - | R4CJA | - / -18 | 2 | Partial capture |
| 10-16 17:30 | 160m | - / +3 | RU3DK | -22 / - | 2 | ✓ Closing fragment |
| 10-16 16:50 | 80m | - / -10 | UA1CKA | +7 / - | 2 | ✓ Closing fragment |
| 10-16 15:59 | 40m | -10 / -12 | RC6OZ | +4 / -10 | 4 | ✓ Full exchange observed |
| 10-16 15:58 | 40m | -12 / -7 | HB9ELE | +9 / -18 | 12 | ✓ Full exchange observed |
| 10-16 15:56 | 40m | -9 / - | R3DPZ | - / -9 | 2 | ✓ Closing fragment |
| 10-16 15:56 | 40m | - / - | F4GUK | -3 / - | 5 | Partial capture |
| 10-15 18:13 | 80m | -18 / - | R2BPS | - / - | 2 | Partial capture |
| 10-15 18:12 | 80m | -14 / - | R6AR | - / -13 | 3 | ✓ Closing fragment |
| 10-15 14:45 | 40m | -7 / - | HL5BPF | - / - | 3 | Partial capture |
| 10-15 14:44 | 40m | -8 / - | R80SAA | - / - | 3 | Partial capture |
| 10-15 14:42 | 40m | -6 / -15 | DJ0MAB | -3 / -15 | 5 | ✓ Full exchange observed |
| 10-15 14:38 | 40m | -10 / - | RA3LBW | -9 / - | 2 | ✓ Closing observed |
| 10-15 14:36 | 40m | - / - | DJ0MAB | -8 / - | 3 | Partial capture |
| 10-14 18:47 | 40m | - / - | EA1KCN | -1 / - | 5 | Partial capture |
| 10-14 17:21 | 80m | -17 / -9 | R4CC | -4 / - | 4 | Partial capture |
| 10-12 15:27 | 160m | -22 / - | R8AEZ | - / -19 | 2 | ✓ Closing fragment |
| 10-12 15:15 | 80m | -16 / - | BH3FZG | - / - | 2 | ✓ Closing fragment |
| 10-12 15:13 | 80m | -16 / - | UK8FF | - / -5 | 2 | ✓ Closing fragment |
| 10-12 15:10 | 40m | - / - | DJ0MAB | -5 / - | 3 | Partial capture |
| 10-12 15:09 | 40m | -8 / - | UB1Q | - / -18 | 3 | ✓ Closing fragment |
| 10-12 15:08 | 40m | - / -11 | RW4HD | -4 / - | 4 | Partial capture |
| 10-11 19:13 | 160m | -18 / -16 | HA8AR | +9 / - | 3 | Partial capture |
| 10-11 19:11 | 160m | -16 / - | R4GD | - / -16 | 2 | ✓ Closing fragment |
| 10-09 16:44 | 160m | -16 / - | <...> | - / -8 | 2 | Partial capture |
| 10-09 16:36 | 160m | -11 / - | OH7KB | - / - | 2 | Partial capture |
| 10-09 16:02 | 160m | -4 / -4 | R5PM | -18 / -17 | 4 | ✓ Full exchange observed |
| 10-09 16:00 | 160m | -4 / - | R4CCE | - / +2 | 2 | ✓ Closing fragment |
| 10-09 15:54 | 160m | -14 / - | RA5AD | - / -12 | 4 | ✓ Closing fragment |
| 10-09 15:51 | 160m | -15 / - | R6ZEJ | - / -22 | 3 | ✓ Closing fragment |
| 10-09 15:47 | 80m | -13 / 0 | R6ZB | +2 / - | 3 | ✓ Closing observed |
| 10-09 15:46 | 80m | -8 / -7 | R8FH | -12 / -4 | 4 | ✓ Full exchange observed |
| 10-07 11:01 | 40m | - / -3 | EU1EU | -7 / - | 2 | ✓ Closing fragment |
| 10-06 14:51 | 40m | 0 / - | UA3XDR | - / -9 | 3 | ✓ Closing fragment |
| 10-06 14:44 | 40m | -4 / - | R8CKD | - / -9 | 2 | ✓ Closing fragment |
| 10-06 14:41 | 40m | -1 / - | R0AU | - / -18 | 3 | ✓ Closing fragment |
| 10-06 14:39 | 40m | -6 / - | RV9WJP | - / -9 | 2 | ✓ Closing fragment |
| 10-06 14:38 | 40m | -6 / - | RA9JM | - / -16 | 2 | ✓ Closing fragment |
| 10-06 14:30 | 80m | -18 / - | R9WCK | - / +6 | 2 | ✓ Closing fragment |
| 10-06 14:28 | 80m | -14 / - | SP2GCJ | +4 / -26 | 4 | ✓ Closing observed |
| 10-06 14:27 | 80m | -19 / - | RK0SC | - / -8 | 3 | ✓ Closing fragment |
| 10-06 14:18 | 80m | -18 / - | BI8FRF | - / -21 | 2 | ✓ Closing fragment |
| 10-05 17:47 | 160m | - / -22 | SV3GKU | -14 / - | 2 | Partial capture |
| 10-05 17:45 | 80m | - / - | DO8JB | -8 / - | 4 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 103345 -24 1556 PR2LX UI4I R-12 104800 -24 1555 CR7CBK UI4I RR73 104900 -22 1555 F5LHI UI4I RR73 112600 -20 1555 CQ UI4I LO43 a1 (x2) 112830 -19 1555 PY5TD UI4I -14 (x2) 111845 -15 1596 UI4I CS7BPG IN51 111915 -12 1479 UI4I CT4KQ IN60 111915 -14 1597 UI4I CS7BPG IN51 111945 -8 1479 UI4I CT4KQ IN60 (x5)
UTC dB Audio Message 184130 -6 1821 UI4I R5AV +01 184145 -21 1821 R5AV UI4I R+02 184200 -8 1821 UI4I R5AV RR73 184215 -19 1821 R5AV UI4I 73 184530 -19 1821 OH2MA UI4I LO43 (x2) 184645 +14 1704 UI4I S59A JN76 (x4) 175145 -17 1104 CQ UI4I LO43 (x4) 175400 -24 1104 UI4I R7KCK R+00
UTC dB Audio Message 160000 +5 925 UI4I RC6OZ R-12 160000 +2 799 UI4I HB9ELE R-07 160015 -9 1820 RC6OZ UI4I RR73 160030 +4 925 UI4I RC6OZ 73 160030 +10 800 UI4I HB9ELE JN47 (x2) 160115 -14 1820 HB9ELE UI4I -09 160130 +18 800 UI4I HB9ELE R+04 160145 -14 1820 HB9ELE UI4I RR73 160200 +13 800 UI4I HB9ELE 73 160245 -16 1820 UN7PAK UI4I LO43 173000 -3 1566 M0SKT/P UI4I -14 (x3) 173230 -1 1566 GJ0KYZ UI4I LO43
UTC dB Audio Message 151545 -15 1552 BH3FZG UI4I LO43 (x2) 172115 -17 1774 R4CC UI4I LO43 172300 -5 798 UI4I R4CC -09 (x3) 181215 -12 1684 R6AR UI4I LO43 181315 -13 1684 R2BPS UI4I LO43 181345 -11 1684 R6AR UI4I R-13 (x2) 181515 -22 1806 R2BPS UI4I LO43 181545 -20 1806 CQ UI4I LO43 (x2) 165015 +7 1593 UI4I UA1CKA -10 (x2)
UTC dB Audio Message 073515 -19 1383 MI9PBM UI4I LO43 133900 -1 889 VE7GKH UI4I LO43 (x5) 183430 +3 1152 CQ UI4I LO43 (x2) 183630 -1 1152 M7EOI UI4I -11 (x2) 173430 +10 1328 PA2JH UI4I LO43 (x4) 121315 -23 2056 BH3NZN UI4I RR73
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.
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