KP4U — FT8 station from Puerto Rico
Amateur radio station KP4U operating from Puerto Rico (grid square KN77). 1,198 FT8 spots received at SO8OO WebSDR, 215 CQ calls, active on 160m, 80m, 60m, 40m, 20m, 10m, over 23 days, best SNR +23 dB. Heard between 2026-04-20 and 2026-07-05.
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Overview
1,198
Total spots
215
CQ calls
23
Days active
-6 dB
Avg SNR
Bands
80m
20m
40m
60m
10m
160m
First seen: 2026-04-20
Last seen: 2026-07-05 23:29 UTC
Last seen: 2026-07-05 23:29 UTC
Frequent QSO partners observed at SO8OO
Stations KP4U worked most often, as logged from our receiver:
Activity Heatmap
Location
QSO Logbook (as observed from SO8OO)
Format: our rx / partner reports
| Time | Band | KP4U | Partner | Partner SNR | Msgs | |
|---|---|---|---|---|---|---|
| 07-06 01:22 | 20m | -4 / - | UR6QV | - / - | 14 | Partial |
| 07-06 00:44 | 20m | -8 / - | UR6QV | - / - | 8 | Partial |
| 06-07 03:20 | 60m | +2 / - | YO3VU | - / - | 9 | Partial |
| 06-07 03:14 | 60m | -3 / - | YL3KW | - / - | 2 | Partial |
| 06-07 02:25 | 60m | +2 / - | SV1SLK | - / -14 | 3 | ✓ Confirmed |
| 06-05 02:26 | 80m | +5 / - | PI4DX | - / -12 | 3 | ✓ Confirmed |
| 06-04 02:44 | 20m | -5 / - | DL1UDO | - / - | 3 | Partial |
| 06-04 02:37 | 20m | -16 / - | RA4HG | - / -15 | 2 | Partial |
| 06-04 02:37 | 20m | -3 / - | RX7T | - / -16 | 3 | ✓ Confirmed |
| 06-04 02:31 | 20m | - / -12 | F4EDB | -21 / - | 3 | ✓ Confirmed |
| 06-04 02:29 | 20m | - / -8 | KD8WNZ | -19 / - | 2 | Partial |
| 06-04 02:17 | 20m | -16 / -9 | AC3KO | -23 / -17 | 5 | ✓ Complete |
| 06-04 02:17 | 20m | -3 / - | N3FMC | - / -13 | 5 | Partial |
| 06-04 02:05 | 20m | -3 / - | N3FMC | - / -12 | 7 | Partial |
| 06-04 01:58 | 20m | - / -12 | KD5NE | -18 / - | 3 | Partial |
| 06-04 01:58 | 20m | -8 / - | UA4CPM | -18 / -13 | 2 | ✓ Verified |
| 05-29 02:19 | 40m | -3 / - | IS0BOZ | - / -19 | 5 | Partial |
| 05-29 02:06 | 40m | -16 / - | R6OI | - / -14 | 4 | ✓ Confirmed |
| 05-29 01:37 | 40m | -7 / -12 | LA7DMA | -15 / -12 | 15 | ✓ Complete |
| 05-29 01:33 | 40m | - / -4 | W5AEN | -12 / - | 3 | Partial |
| 05-29 01:25 | 40m | -14 / - | RC6ZU | - / - | 2 | Partial |
| 05-29 01:20 | 40m | -8 / -9 | EA5ITV | -16 / -8 | 10 | ✓ Complete |
| 05-29 01:11 | 40m | -12 / -12 | R4FDD | -12 / -20 | 4 | ✓ Complete |
| 05-29 01:10 | 40m | - / -10 | WP4OWI | -14 / - | 2 | ✓ Confirmed |
| 05-29 01:08 | 40m | - / -21 | WA5RON | -14 / - | 3 | ✓ Confirmed |
| 05-29 01:03 | 40m | -6 / - | RA1OHX | - / -17 | 2 | Partial |
| 05-29 01:02 | 40m | - / -12 | VU2MSA | -12 / - | 3 | ✓ Confirmed |
| 05-29 00:56 | 40m | - / -13 | N5VSA | -10 / - | 2 | ✓ Confirmed |
| 05-29 00:55 | 40m | -4 / -20 | OO0O | -12 / -14 | 12 | ✓ Complete |
| 05-29 00:48 | 40m | - / -2 | KF8EPB | -15 / - | 3 | ✓ Confirmed |
| 05-29 00:47 | 40m | - / -10 | N9AWU | -14 / - | 2 | ✓ Confirmed |
| 05-29 00:43 | 40m | - / -13 | KC3WHS | -10 / - | 2 | ✓ Confirmed |
| 05-29 00:40 | 40m | - / -17 | G3YSK | -12 / - | 3 | ✓ Confirmed |
| 05-29 00:36 | 40m | 0 / - | DF4IP | - / - | 7 | Partial |
| 05-29 00:36 | 40m | - / +1 | KG7OF | -10 / - | 2 | ✓ Confirmed |
| 05-29 00:23 | 40m | +4 / - | PA4G | - / -11 | 4 | Partial |
| 05-29 00:17 | 40m | -18 / - | UA9SY | - / - | 2 | Partial |
| 05-29 00:09 | 40m | +3 / -5 | YO4BXX | -14 / -16 | 9 | ✓ Complete |
| 05-29 00:09 | 40m | - / -13 | WB8ZFL | -12 / - | 2 | ✓ Confirmed |
| 05-29 00:08 | 40m | -10 / - | F6FHZ | - / - | 2 | Partial |
| 05-29 00:07 | 80m | -6 / - | PW8BR | - / - | 2 | Partial |
| 05-29 00:06 | 40m | - / -10 | N0XRG | -14 / - | 2 | ✓ Confirmed |
| 05-29 00:06 | 40m | -18 / - | R3SE | - / - | 3 | Partial |
| 05-28 23:52 | 80m | +2 / - | G6BCC | - / - | 3 | Partial |
| 05-28 23:49 | 80m | -8 / - | MI7XHT | - / -11 | 2 | ✓ Confirmed |
| 05-28 23:47 | 40m | +6 / - | RA3DRI | - / - | 4 | Partial |
| 05-28 23:44 | 40m | -3 / - | M8GGQ | - / - | 2 | Partial |
| 05-28 23:40 | 40m | -5 / - | DB7CT | - / - | 3 | Partial |
| 05-28 23:40 | 40m | -18 / -20 | RV3H | -14 / -15 | 8 | ✓ Complete |
| 05-28 23:33 | 40m | - / -9 | F4MID | -14 / - | 9 | Partial |
Station Log
20m
UTC dB Freq Message 005100 -8 605 KP4U UR6QV KN77 (x15)
60m
UTC dB Freq Message 013830 -18 2026 KP4U IZ8PPI -17 022530 +1 756 KP4U SV1SLK KM17 (x3) 031430 -5 2135 KP4U YL3KW KO27 (x2) 032030 +2 1312 KP4U YO3VU KN34 (x9)
80m
UTC dB Freq Message 005245 +8 805 KP4U F1PBZ -24 (x3) 234915 -10 1530 KP4U MI7XHT -11 (x2) 235145 +6 758 KP4U F1PBZ -20 235245 +1 1069 KP4U G6BCC IO93 (x3) 000745 -6 529 KP4U PW8BR FH99 (x2) 022445 +13 2437 KP4U IQ4JO JN63 022645 +4 1400 KP4U PI4DX JO21 (x3)
40m
UTC dB Freq Message 014245 -5 1710 KP4U LA7DMA RR73 014300 -16 1162 LA7DMA KP4U R-12 014345 -9 1710 KP4U LA7DMA RR73 014430 -17 1162 CQ KP4U FK68 020345 -3 664 KP4U R6OI KN87 (x5) 021415 +1 1637 KP4U PD1SL JO22 021915 -1 1044 KP4U IS0BOZ -19 (x5)
160m
UTC dB Freq Message 012200 -17 1516 KP4U EA1FCH IN63 (x3) 021445 -18 1495 KP4U K2IL EL97 (x3) 012830 +16 2389 KP4U DL1RWN JO64 (x2) 004215 -19 1296 KP4U PP5JR -18 (x3)
10m
UTC dB Freq Message 154930 -24 1496 KP4U EA4IDN R-24