KJ4EX — FT8 station from United States
Amateur radio station KJ4EX operating from United States. 170 FT8 spots received at SO8OO WebSDR, 5 CQ calls, active on 160m, 80m, 40m, 20m, over 13 days, best SNR +16 dB. Heard between 2026-04-21 and 2026-06-16.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee
Overview
170
Total spots
5
CQ calls
13
Days active
-3 dB
Avg SNR
Bands
80m
40m
20m
160m
First seen: 2026-04-21
Last seen: 2026-06-16 00:49 UTC
Last seen: 2026-06-16 00:49 UTC
Frequent QSO partners observed at SO8OO
Stations KJ4EX worked most often, as logged from our receiver:
Activity Heatmap
Location
QSO Logbook (as observed from SO8OO)
Format: our rx / partner reports
| Time | Band | KJ4EX | Partner | Partner SNR | Msgs | |
|---|---|---|---|---|---|---|
| 06-16 02:48 | 40m | +6 / - | OZ5TU | - / -10 | 2 | ✓ Confirmed |
| 06-16 02:44 | 40m | -14 / - | YO8RSL | - / - | 2 | Partial |
| 06-16 02:42 | 40m | +4 / - | LA9GX | - / -13 | 2 | ✓ Confirmed |
| 06-03 04:07 | 40m | +4 / - | IK4LZH | - / - | 4 | Partial |
| 06-03 04:00 | 40m | -13 / - | HB9ZHK | - / - | 3 | Partial |
| 06-03 03:57 | 40m | -7 / - | G8MIA | - / - | 3 | ✓ Confirmed |
| 06-03 03:49 | 40m | -8 / - | G8OO | - / - | 2 | ✓ Confirmed |
| 06-03 03:43 | 40m | -4 / - | G8OO | - / - | 3 | Partial |
| 06-03 03:43 | 40m | +8 / - | DL5LV | - / -9 | 6 | ✓ Confirmed |
| 06-03 03:43 | 40m | -14 / - | F4NGR | - / -14 | 3 | ✓ Confirmed |
| 06-03 03:43 | 40m | -5 / - | YO4FZV | - / - | 3 | Partial |
| 06-03 03:39 | 40m | +6 / - | ON6AA | - / -9 | 2 | Partial |
| 06-03 01:11 | 20m | -18 / -7 | DF7GG | -16 / -14 | 5 | ✓ Complete |
| 06-03 01:11 | 20m | -8 / -13 | 7Z1DM | -15 / -19 | 4 | ✓ Complete |
| 06-03 01:08 | 20m | - / +6 | NC4MH | -12 / - | 2 | ✓ Confirmed |
| 06-03 01:03 | 20m | - / -8 | SP6AXW | -14 / - | 2 | ✓ Confirmed |
| 06-03 01:01 | 20m | +8 / -4 | IQ4JO | -10 / -5 | 4 | ✓ Complete |
| 06-03 00:59 | 20m | - / -1 | F1PBZ | -10 / - | 2 | ✓ Confirmed |
| 06-03 00:56 | 20m | - / -25 | IZ8EYN | -15 / - | 2 | Partial |
| 06-03 00:56 | 20m | -8 / - | RK4FF | - / -16 | 2 | Partial |
| 06-03 00:48 | 20m | - / -8 | KF6MIX | -17 / - | 3 | ✓ Confirmed |
| 06-03 00:38 | 20m | - / - | NH6ZA | -20 / - | 2 | Partial |
| 06-03 00:37 | 160m | +4 / - | 9A4ZM | - / - | 2 | Partial |
| 05-26 01:09 | 80m | +10 / - | DO9BAU | - / - | 6 | Partial |
| 05-26 01:06 | 80m | -5 / - | EA5TE | - / -17 | 2 | ✓ Confirmed |
| 05-19 01:11 | 40m | -4 / - | WA3HDW | - / - | 2 | Partial |
| 05-19 01:01 | 40m | -4 / - | TF8SM | -19 / -4 | 2 | ✓ Verified |
| 05-16 03:37 | 40m | -11 / - | PI4DX | - / -3 | 2 | ✓ Confirmed |
| 05-16 03:35 | 40m | -9 / - | P43AO | - / -2 | 2 | ✓ Confirmed |
| 05-16 03:25 | 40m | +15 / - | SV1FJF | - / -14 | 2 | ✓ Confirmed |
| 05-14 03:54 | 80m | -22 / - | HB9MZI | - / - | 2 | Partial |
| 05-14 03:47 | 80m | +7 / - | HB9DVO | - / -21 | 4 | ✓ Confirmed |
| 05-14 03:42 | 80m | +3 / - | F6EQZ | - / -7 | 3 | ✓ Confirmed |
| 05-12 02:46 | 40m | -6 / - | G3WGC | - / - | 5 | Partial |
| 05-12 02:43 | 40m | -16 / - | HA7JDU | - / -15 | 2 | ✓ Confirmed |
| 05-09 04:47 | 40m | -5 / - | PA2CV | - / - | 2 | Partial |
| 05-09 04:38 | 40m | -4 / - | F4CWZ | - / - | 2 | ✓ Confirmed |
| 05-09 04:25 | 40m | +4 / - | DL2RPN | - / -16 | 2 | ✓ Confirmed |
| 05-09 04:17 | 40m | +7 / - | S57SWR | - / -14 | 5 | Partial |
| 05-09 04:08 | 40m | +6 / - | YO6BHN | - / - | 2 | Partial |
| 05-09 04:07 | 40m | -6 / - | YO2LGK | - / - | 2 | Partial |
| 05-09 04:01 | 40m | +4 / - | IW0HLZ | - / -11 | 2 | ✓ Confirmed |
| 05-09 03:43 | 80m | +7 / - | S50XX | - / - | 7 | Partial |
| 05-09 03:37 | 80m | -1 / - | DL8TV | - / -20 | 3 | ✓ Confirmed |
| 05-09 03:36 | 80m | -8 / - | F1PBZ | - / -4 | 2 | ✓ Confirmed |
| 04-29 01:23 | 40m | -10 / - | IZ8PPI | - / -24 | 4 | Partial |
| 04-24 01:14 | 80m | -12 / - | EA1CQ | - / -19 | 2 | ✓ Confirmed |
| 04-24 01:12 | 80m | -3 / - | CT7AUT | - / -15 | 3 | ✓ Confirmed |
| 04-21 04:26 | 80m | +6 / - | OK1XV | - / -16 | 2 | ✓ Confirmed |
| 04-21 04:22 | 80m | +4 / - | OK1XV | - / - | 2 | Partial |
Station Log
40m
UTC dB Freq Message 035830 -10 2290 KJ4EX G8MIA 73 040000 -13 1228 KJ4EX HB9ZHK JN47 (x3) 040430 -8 239 KJ4EX M7VIC IO92 040715 +5 438 KJ4EX IK4LZH JN54 (x4) 024245 +1 2479 KJ4EX LA9GX -13 (x2) 024415 -14 1567 KJ4EX YO8RSL KN37 (x2) 024800 +4 1183 KJ4EX OZ5TU -10 (x2)
20m
UTC dB Freq Message 010845 -14 1282 NC4MH KJ4EX +06 010915 -12 1282 HB9TIH KJ4EX -01 010945 -10 1282 NC4MH KJ4EX RR73 011100 -8 1281 KJ4EX 7Z1DM -19 011115 -16 1282 DF7GG KJ4EX -07 011130 -8 1281 KJ4EX 7Z1DM -19 011145 -15 1282 DF7GG KJ4EX -07 011300 -17 2200 KJ4EX DF7GG R-14 011315 -15 1282 7Z1DM KJ4EX R-13 011330 -18 2200 KJ4EX DF7GG R-14 011345 -17 1282 DF7GG KJ4EX RR73 011400 -7 1282 KJ4EX 7Z1DM RR73 011415 -15 1282 CP7DX KJ4EX EM83 011645 -15 1201 KQ4ZIP KJ4EX EM83 (x2)
160m
UTC dB Freq Message 003700 +5 1428 KJ4EX 9A4ZM JN86 (x2)
80m
UTC dB Freq Message 034745 +10 1160 KJ4EX HB9DVO JN47 (x4) 035430 -24 1779 KJ4EX HB9MZI JN46 (x2) 010645 -4 1606 KJ4EX EA5TE R-17 (x2) 010915 +11 2102 KJ4EX DO9BAU JO62 (x6) 014530 -8 1875 KJ4EX KC1TRF RRR