JR4GPA — FT8 station from Japan
Amateur radio station JR4GPA operating from Japan. 748 FT8 spots received at SO8OO WebSDR, 169 CQ calls, active on 80m, 40m, 20m, 10m, over 28 days, best SNR +30 dB. Heard between 2026-04-21 and 2026-06-10.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee
Overview
748
Total spots
169
CQ calls
28
Days active
-3 dB
Avg SNR
Bands
80m
20m
40m
10m
First seen: 2026-04-21
Last seen: 2026-06-10 18:28 UTC
Last seen: 2026-06-10 18:28 UTC
Frequent QSO partners observed at SO8OO
Stations JR4GPA worked most often, as logged from our receiver:
Activity Heatmap
Location
QSO Logbook (as observed from SO8OO)
Format: our rx / partner reports
| Time | Band | JR4GPA | Partner | Partner SNR | Msgs | |
|---|---|---|---|---|---|---|
| 06-10 20:18 | 20m | - / -14 | TA2AUL | -7 / - | 3 | ✓ Confirmed |
| 06-10 20:16 | 20m | -6 / - | IW5ALZ | - / - | 2 | Partial |
| 06-10 20:14 | 20m | - / -10 | TA2AUL | -3 / - | 2 | Partial |
| 06-10 20:12 | 20m | - / -11 | IQ0FR | -10 / - | 2 | Partial |
| 06-10 20:11 | 20m | - / -13 | DK4NB | -12 / - | 2 | ✓ Confirmed |
| 06-10 20:11 | 20m | +8 / - | SQ2JDM | - / - | 3 | Partial |
| 06-10 20:11 | 20m | +10 / - | IR0RCAG | - / - | 2 | ✓ Confirmed |
| 06-10 20:10 | 20m | -10 / - | DM5WGL | - / - | 3 | Partial |
| 06-10 20:07 | 20m | -6 / - | IT9JLP | - / - | 3 | Partial |
| 06-10 19:59 | 20m | +10 / - | OK1VM | - / -18 | 2 | ✓ Confirmed |
| 06-09 20:35 | 20m | -17 / - | IK8IOI | - / -11 | 2 | ✓ Confirmed |
| 06-09 20:33 | 20m | - / -9 | SP7MKG | -19 / - | 2 | ✓ Confirmed |
| 06-09 20:32 | 20m | - / -12 | YO4DWD | -14 / - | 2 | ✓ Confirmed |
| 06-09 20:29 | 20m | +6 / - | IQ4FE | -7 / -18 | 3 | ✓ Verified |
| 06-09 20:26 | 20m | 0 / -14 | EA5PG | -11 / -13 | 6 | ✓ Complete |
| 06-09 20:24 | 20m | - / -13 | IQ0OS | -4 / - | 2 | Partial |
| 06-09 20:23 | 20m | - / -7 | IQ4FE | -13 / - | 2 | Partial |
| 06-09 20:16 | 20m | - / -11 | SQ5JMO | -9 / - | 2 | ✓ Confirmed |
| 06-08 19:41 | 20m | -5 / -10 | IU4RWW | +2 / - | 4 | Partial |
| 06-08 19:39 | 20m | -7 / -9 | R6FMF | -1 / -8 | 2 | Partial |
| 06-08 19:38 | 20m | - / -14 | SP2LNY | 0 / - | 3 | ✓ Confirmed |
| 06-08 19:37 | 20m | - / -3 | SQ2RAD | -1 / - | 3 | ✓ Confirmed |
| 06-08 19:34 | 20m | -20 / - | R3BEE | - / -20 | 2 | ✓ Confirmed |
| 06-08 19:30 | 20m | -3 / - | IU3TBD | - / -14 | 2 | ✓ Confirmed |
| 06-08 19:27 | 20m | -12 / - | DC1XU | - / -24 | 4 | ✓ Confirmed |
| 06-08 19:23 | 20m | -2 / -4 | LZ2PC | -11 / -17 | 5 | ✓ Complete |
| 06-08 19:22 | 20m | - / -17 | HA1ORA | -13 / - | 3 | ✓ Confirmed |
| 06-08 19:16 | 20m | +4 / - | F1POK | -14 / -22 | 5 | ✓ Verified |
| 06-08 19:07 | 20m | -9 / -15 | F4NGR | -12 / -11 | 5 | ✓ Complete |
| 06-08 19:06 | 20m | +18 / -8 | PD0RDD | -12 / -20 | 5 | ✓ Complete |
| 06-08 19:00 | 20m | -5 / - | F4NGR | - / - | 4 | Partial |
| 06-08 18:53 | 20m | - / -3 | SP9JZT | -9 / - | 2 | Partial |
| 06-08 18:53 | 20m | -2 / -14 | IU0TYA | -7 / -15 | 9 | ✓ Complete |
| 06-08 18:49 | 20m | -6 / - | DK0VL | - / - | 2 | ✓ Confirmed |
| 06-08 18:47 | 20m | +3 / - | PD1HPB | - / - | 12 | Partial |
| 06-08 18:46 | 20m | +11 / - | IU2LCQ | - / -15 | 6 | ✓ Confirmed |
| 06-08 18:42 | 20m | -4 / - | IK4LZH | - / - | 4 | Partial |
| 06-08 18:41 | 20m | -22 / - | S57BDM | - / -14 | 2 | ✓ Confirmed |
| 06-08 18:40 | 20m | +22 / - | SV1MOZ | - / - | 5 | Partial |
| 06-08 18:39 | 20m | -10 / - | IW5ALZ | - / -3 | 2 | Partial |
| 06-08 18:38 | 20m | +4 / - | E77FN | - / -16 | 2 | ✓ Confirmed |
| 06-08 18:37 | 20m | -15 / - | PD0WL | - / - | 2 | Partial |
| 06-08 18:33 | 20m | +6 / - | IW5ALZ | - / - | 2 | Partial |
| 06-08 18:33 | 20m | -6 / - | HB9EKJ | -2 / -16 | 8 | ✓ Verified |
| 06-08 18:32 | 20m | -7 / - | DL1UDO | - / - | 3 | Partial |
| 06-08 18:26 | 20m | -2 / -10 | DB1SN | -6 / -17 | 5 | ✓ Complete |
| 06-07 20:25 | 20m | -19 / - | IQ7PU | - / -7 | 2 | ✓ Confirmed |
| 06-07 20:16 | 20m | -2 / - | TA7I | - / - | 2 | Partial |
| 06-07 20:11 | 20m | -7 / -10 | IQ0VT | -12 / - | 3 | ✓ Verified |
| 06-04 19:50 | 20m | +12 / - | IZ2DPX | - / - | 3 | Partial |
Station Log
20m
UTC dB Freq Message 201245 -11 1296 IQ0FR JR4GPA -11 201245 +10 288 JR4GPA SQ2JDM JO94 201315 -8 1295 IQ0FR JR4GPA -11 201415 -6 830 TA2AUL JR4GPA -10 (x2) 201615 -2 2731 JR4GPA IW5ALZ JN53 (x2) 201845 -7 830 TA2AUL JR4GPA -14 (x3) 202100 -9 829 JR4GPA IU4PPL 73 202245 -11 1095 TA1CQ JR4GPA -12 202315 -13 1146 4Z5PE JR4GPA -08 202815 -3 2358 JR4GPA IQ5AAR 73 203100 -13 2011 HB10GBT JR4GPA -05
80m
UTC dB Freq Message 201300 +0 525 JR4GPA DO5SOB JN48
40m
UTC dB Freq Message 185700 -4 641 JR4GPA DK5DW JN68 (x3) 212915 +8 376 JR4GPA 9A4ZM JN86 (x3)
10m
UTC dB Freq Message 103300 -4 1507 JR4GPA A60PE/14 -03 104615 -3 720 JR4GPA A61DI -12 (x2) 080430 -21 1521 DL9KM JR4GPA RR73 080600 -17 1521 YO3OBB JR4GPA -06 (x2) 080745 -12 1521 US4EX JR4GPA -04 (x2) 080845 -23 1521 YO7LCB JR4GPA -05 (x2) 081745 -21 1447 IU6UAQ JR4GPA RR73 085145 -15 1584 JR4GPA R6FMW R-03