UB1API — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving UB1API, decoded by SO8OO in southeastern Poland. 132 related FT8 messages, observed on 160m, 80m, 40m, 20m, 10m, across 28 UTC dates. Heard between 2026-05-18 and 2026-08-16.
These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee
Overview
Frequent QSO partners observed at SO8OO
Stations UB1API worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by UB1API
Approximate centre of KP50, decoded 2026-08-16 18:24 UTC. A transmitted locator is not proof of the operator's permanent location.
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 | UB1API S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-16 18:28 | 80m | +4 / - | RV0APH | - / -13 | 2 | ✓ Closing fragment |
| 08-16 18:24 | 80m | 0 / - | RA0SCA | -14 / - | 3 | ✓ Closing observed |
| 08-16 18:17 | 40m | -18 / - | UA6YEX | - / -21 | 2 | ✓ Closing fragment |
| 08-16 12:26 | 20m | - / -1 | UA3GDJ | -21 / - | 2 | ✓ Closing fragment |
| 08-15 18:24 | 40m | -18 / - | UA1ZQN | - / -4 | 2 | ✓ Closing fragment |
| 08-15 18:17 | 40m | - / - | RA3DA | -16 / - | 2 | ✓ Closing fragment |
| 08-02 20:00 | 160m | -8 / - | R1NW | -6 / -5 | 6 | ✓ Full exchange observed |
| 08-02 19:55 | 80m | -4 / - | RK9UM | - / -10 | 4 | Partial capture |
| 08-02 19:51 | 40m | -15 / -8 | UD7G | -4 / -13 | 3 | ✓ Full exchange observed |
| 08-02 11:12 | 20m | - / +6 | R50RKZ | -5 / - | 2 | ✓ Closing fragment |
| 07-30 20:10 | 160m | -7 / -15 | R2LAF/P | -17 / -15 | 4 | Partial capture |
| 07-29 19:38 | 40m | - / - | RU3OZ | -10 / - | 2 | ✓ Closing fragment |
| 07-29 19:35 | 40m | -18 / - | RW4YD | - / -8 | 2 | Partial capture |
| 07-24 13:25 | 10m | -20 / - | R3PLA | - / -14 | 2 | ✓ Closing fragment |
| 07-20 10:21 | 10m | - / +2 | RU3GF | -18 / - | 2 | Partial capture |
| 07-16 19:42 | 80m | +2 / - | UA6EU | -9 / -22 | 2 | ✓ Closing observed |
| 07-16 19:38 | 80m | 0 / - | R8CKD | - / - | 2 | Partial capture |
| 07-15 20:14 | 160m | -14 / - | EW1TA | - / -13 | 3 | Partial capture |
| 07-15 20:13 | 160m | -12 / - | R1QBQ | - / -1 | 3 | ✓ Closing fragment |
| 07-15 20:10 | 160m | -12 / -16 | UI6L | -2 / -6 | 5 | ✓ Full exchange observed |
| 07-15 20:08 | 160m | -14 / -13 | SP7ENW | -5 / -20 | 5 | ✓ Full exchange observed |
| 07-15 20:07 | 160m | -12 / -7 | R6ML | -12 / -11 | 4 | ✓ Full exchange observed |
| 07-15 20:05 | 160m | -13 / - | UD8S | - / 0 | 3 | ✓ Closing fragment |
| 07-15 20:01 | 80m | +4 / 0 | RM5F | +6 / +3 | 5 | ✓ Full exchange observed |
| 07-15 20:00 | 80m | +2 / +1 | UA3VVA | -1 / -1 | 4 | ✓ Full exchange observed |
| 07-14 20:03 | 40m | -19 / - | UB9WPD | - / -24 | 2 | Partial capture |
| 07-13 12:46 | 10m | -22 / 0 | RZ5D | -3 / -1 | 4 | ✓ Full exchange observed |
| 07-09 17:53 | 80m | -7 / - | SP7MAZ | - / -20 | 2 | Partial capture |
| 07-09 17:50 | 80m | -9 / -13 | UA9FGJ | -11 / -2 | 5 | ✓ Full exchange observed |
| 07-08 20:09 | 160m | -8 / - | DM2HK | - / -13 | 2 | Partial capture |
| 07-08 20:08 | 160m | -19 / -3 | R7CD | +6 / +3 | 6 | ✓ Full exchange observed |
| 07-08 20:07 | 160m | -5 / -6 | RT2P | -12 / -4 | 4 | ✓ Full exchange observed |
| 07-08 20:06 | 160m | -7 / +2 | DL9KM | -16 / -14 | 5 | ✓ Full exchange observed |
| 07-08 20:05 | 160m | -11 / -1 | RZ3DW | +4 / 0 | 5 | ✓ Full exchange observed |
| 07-08 20:04 | 160m | -6 / - | RA3TOS | - / -12 | 2 | ✓ Closing fragment |
| 07-08 20:02 | 160m | -9 / - | R9DZ | - / - | 3 | Partial capture |
| 07-08 19:57 | 80m | - / -2 | R1BDX | -13 / - | 3 | ✓ Closing fragment |
| 07-08 19:56 | 80m | - / -3 | UC1Q | +4 / - | 2 | ✓ Closing fragment |
| 07-08 19:52 | 40m | -17 / - | RX4SA | -13 / -12 | 2 | ✓ Closing observed |
| 07-08 13:22 | 10m | - / -16 | DN9AD | -10 / - | 2 | Partial capture |
| 07-08 13:17 | 10m | - / +2 | PE9JAN | -15 / - | 5 | ✓ Closing fragment |
| 07-07 18:34 | 80m | -13 / -22 | R9SAP | -5 / -4 | 2 | Partial capture |
| 07-07 18:31 | 40m | -16 / - | R0WC | - / - | 2 | Partial capture |
| 06-14 08:39 | 10m | -14 / - | 7Q3CM | - / - | 2 | Partial capture |
| 06-12 07:52 | 10m | - / -20 | UA3SAO | -7 / - | 6 | Partial capture |
| 06-10 13:29 | 20m | -10 / - | R9JE | +1 / -13 | 3 | ✓ Closing observed |
| 06-10 13:27 | 20m | -15 / +1 | UE7DR | +5 / -6 | 3 | ✓ Full exchange observed |
| 06-10 13:26 | 20m | -12 / -3 | RD8O | -10 / - | 2 | ✓ Closing observed |
| 06-10 13:01 | 10m | - / -9 | 5H1KB | +4 / - | 2 | Partial capture |
| 06-05 08:06 | 10m | - / -8 | RA9LL | -19 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 200230 +10 925 UB1API RM5F 73 193815 +1 1336 R8CKD UB1API KP50 (x2) 194245 +2 1336 UA6EU UB1API R-22 194300 -9 960 UB1API UA6EU RR73 195545 -7 1337 RK9UM UB1API KP50 (x4) 195930 -4 1136 UB1API RU6FK -05 182415 +3 335 RA0SCA UB1API KP50 182600 -14 705 UB1API RA0SCA RR73 182615 -3 1335 RA0SCA UB1API 73 182815 +3 1335 RV0APH UB1API R-13 (x2)
UTC dB Audio Message 193530 -20 1371 RW4YD UB1API R-08 193800 -19 1370 R6FX UB1API RR73 193845 -9 2042 UB1API RU3OZ KO91 (x2) 200745 -16 1986 UB1API R3TIT -04 195100 -4 2839 UB1API UD7G -08 195115 -15 1369 UD7G UB1API R-13 195130 -4 2839 UB1API UD7G RR73 175145 -24 1368 RA4UIV UB1API KP50 181715 -17 983 UB1API RA3DA KO95 (x2) 182400 -18 1371 UA1ZQN UB1API R-04 (x2) 181700 -16 1369 UA6YEX UB1API R-21 (x2)
UTC dB Audio Message 132600 -10 1569 UB1API RD8O -03 132645 -12 1408 RD8O UB1API 73 132730 +3 2862 UB1API UE7DR +01 132745 -15 1407 UE7DR UB1API R-06 132800 +7 2862 UB1API UE7DR RR73 132930 -8 1407 R9JE UB1API KP50 (x2) 133045 +1 546 UB1API R9JE RR73 085745 -21 1410 RQ7R UB1API KP50 130330 -24 1408 TF8KW UB1API KP50 115215 -20 1345 UB1API UD8S -06 111200 +2 2322 UB1API R50RKZ +06 (x2) 122600 -21 1408 UB1API UA3GDJ R-01 (x2)
UTC dB Audio Message 201445 -12 1329 EW1TA UB1API KP50 (x3) 185430 +1 1572 UB1API RA3WAK -18 201030 -8 1329 R2LAF/P UB1API KP50 (x3) 201345 -17 2031 UB1API R2LAF/P R-15 200015 -7 1330 R1NW UB1API KP50 (x2) 200100 -10 1500 UB1API R1NW +13 200115 -8 1330 R1NW UB1API R-05 200130 -3 1500 UB1API R1NW RR73 200145 -11 1330 R1NW UB1API 73 211330 -14 1329 OH0ERF UB1API R-09
UTC dB Audio Message 132415 -10 2528 UB1API DN9AD R-16 124645 +0 776 UB1API RZ5D KN75 124700 -22 1418 RZ5D UB1API -01 124715 -4 776 UB1API RZ5D R+00 (x2) 124930 -22 1418 R4UA UB1API -14 125045 -2 1330 UB1API <...> +01 125600 -23 1417 RW4F UB1API RR73 181145 -6 494 UB1API RX9WN RR73 055200 -19 1421 UA6EED UB1API R+03 102115 -19 1419 UB1API RU3GF +02 (x2) 132215 -20 1420 RW9HSB UB1API KP50 132545 -22 1419 R3PLA UB1API -14 (x2)
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.