JI1UMC — FT8 station from Japan
Amateur radio station JI1UMC operating from Japan (grid square KN84). 129 FT8 spots received at SO8OO WebSDR, active on 20m, 10m, over 27 days, best SNR +30 dB. Heard between 2026-04-23 and 2026-06-22.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee
Overview
129
Total spots
0
CQ calls
27
Days active
-4 dB
Avg SNR
Bands
20m
10m
First seen: 2026-04-23
Last seen: 2026-06-22 13:22 UTC
Last seen: 2026-06-22 13:22 UTC
Frequent QSO partners observed at SO8OO
Stations JI1UMC worked most often, as logged from our receiver:
Activity Heatmap
Location
QSO Logbook (as observed from SO8OO)
Format: our rx / partner reports
| Time | Band | JI1UMC | Partner | Partner SNR | Msgs | |
|---|---|---|---|---|---|---|
| 06-20 13:29 | 20m | -2 / - | LA1PHA | - / -7 | 2 | ✓ Confirmed |
| 06-17 00:14 | 20m | +7 / - | TN8GD | - / -16 | 4 | ✓ Confirmed |
| 06-16 17:29 | 20m | - / -23 | 4U1WB | -8 / - | 2 | Partial |
| 06-13 07:56 | 10m | -9 / - | <...> | - / -15 | 2 | Partial |
| 06-09 14:11 | 20m | -6 / - | GM4FDM | - / -14 | 2 | ✓ Confirmed |
| 06-07 16:33 | 20m | -17 / - | Z62NS | - / -11 | 4 | ✓ Confirmed |
| 06-03 15:11 | 20m | -15 / - | TA2GG | - / -19 | 5 | ✓ Confirmed |
| 06-01 16:32 | 20m | - / - | IQ9BF | -14 / - | 10 | Partial |
| 06-01 16:30 | 20m | -19 / - | 7Z1IS | -10 / - | 3 | ✓ Verified |
| 06-01 16:26 | 20m | - / -23 | SM6CWP | -14 / - | 3 | Partial |
| 06-01 16:21 | 20m | -6 / - | RG2V | - / -11 | 5 | Partial |
| 06-01 16:21 | 20m | 0 / - | US3EW | - / - | 2 | Partial |
| 06-01 16:16 | 20m | - / -25 | DH1NGL | -12 / - | 3 | Partial |
| 06-01 16:12 | 20m | - / -15 | OE6BMG | -7 / - | 6 | Partial |
| 06-01 16:09 | 20m | -14 / - | UA3FO | - / - | 2 | Partial |
| 06-01 16:06 | 20m | +4 / -9 | HB10GBT | -5 / -9 | 5 | Partial |
| 06-01 15:48 | 20m | - / - | IS0LBE | -10 / - | 15 | Partial |
| 06-01 14:47 | 10m | -14 / - | 7Q9PTP | - / -9 | 2 | ✓ Confirmed |
| 05-29 15:30 | 20m | - / - | LA8ENA | -8 / - | 2 | Partial |
| 05-27 09:32 | 10m | +6 / - | 9J2FI | - / -12 | 2 | ✓ Confirmed |
| 05-26 11:26 | 10m | +2 / - | 9J2FI | - / -5 | 2 | ✓ Confirmed |
| 05-24 13:49 | 20m | -2 / - | R7DX | - / - | 4 | Partial |
| 05-22 14:53 | 20m | -11 / - | SV0TPN | - / -12 | 2 | ✓ Confirmed |
| 05-21 12:32 | 20m | -9 / - | RI0SP | - / -9 | 2 | Partial |
| 05-20 13:39 | 20m | - / - | MI0AIH | -16 / - | 7 | Partial |
| 05-20 13:17 | 20m | - / - | ON6AA | -12 / - | 3 | Partial |
| 05-17 15:22 | 20m | -11 / - | UA9C | - / -6 | 3 | ✓ Confirmed |
| 05-17 15:20 | 20m | +18 / - | <...> | - / -5 | 2 | Partial |
| 05-17 15:12 | 20m | -16 / - | US3EW | - / - | 2 | Partial |
| 05-16 16:54 | 20m | - / - | F8FUA | -14 / - | 2 | Partial |
| 05-16 15:18 | 20m | +8 / - | SV2BWY | - / - | 2 | Partial |
| 05-16 15:11 | 20m | - / - | SQ7L | -3 / - | 10 | Partial |
| 05-16 15:02 | 20m | -2 / -16 | ON7FD | -4 / -12 | 9 | ✓ Complete |
| 05-16 14:58 | 20m | - / - | ON7FD | -6 / - | 2 | Partial |
| 05-16 12:39 | 20m | +2 / - | CT1FMX | - / -16 | 2 | ✓ Confirmed |
| 05-13 11:43 | 20m | -10 / - | R4FDW | - / - | 4 | Partial |
| 05-13 11:42 | 20m | +6 / - | OR7K | - / - | 2 | ✓ Confirmed |
| 05-12 14:52 | 20m | -14 / - | PA1LCS | - / -20 | 2 | Partial |
| 05-12 14:27 | 20m | -10 / - | F4IBJ | - / -16 | 3 | ✓ Confirmed |
| 05-12 09:41 | 20m | +24 / - | ON6AA | - / -19 | 3 | ✓ Confirmed |
| 05-07 12:28 | 20m | +12 / - | ON6AA | - / - | 2 | Partial |
| 05-07 12:19 | 20m | +20 / - | ON6AA | - / - | 2 | Partial |
| 05-07 03:15 | 20m | -5 / - | W3YNI | - / -18 | 3 | ✓ Confirmed |
| 05-05 16:36 | 20m | -16 / - | R7SF | - / - | 7 | Partial |
| 05-05 16:27 | 20m | -16 / - | EA3CSK | - / -17 | 3 | Partial |
| 05-05 16:26 | 20m | -12 / - | F6EYB | - / -14 | 2 | ✓ Confirmed |
| 05-05 15:56 | 20m | 0 / - | F5URG | - / -17 | 2 | ✓ Confirmed |
| 05-05 05:28 | 20m | -18 / - | HC2GRC | - / -1 | 2 | ✓ Confirmed |
| 05-04 12:08 | 20m | 0 / - | IK2ZJR | - / - | 4 | Partial |
| 05-04 12:07 | 20m | +8 / - | ON6AA | - / - | 2 | Partial |
Station Log
20m
UTC dB Freq Message 141315 -9 2669 VA7ZDX JI1UMC PM95 172415 -14 2799 4U1WB JI1UMC PM95 (x3) 173300 -11 2799 KG7UL JI1UMC RR73 001400 +7 676 JI1UMC TN8GD -16 (x4) 072900 -7 306 JI1UMC W4PSK RR73 153430 -14 627 <...> JI1UMC PM95 132915 -2 838 JI1UMC LA1PHA -07 (x2) 035045 -13 1515 JI1UMC VA3DIF RR73 152245 -22 2101 JI1UMC R7DX KN84
10m
UTC dB Freq Message 133045 -17 1630 JI1UMC VK9BSA RR73 112615 -1 2832 JI1UMC 9J2FI -05 (x4) 144700 -14 2059 JI1UMC 7Q9PTP -09 (x2) 145615 -18 1572 JI1UMC 7Z1GC RR73 075600 -10 1684 JI1UMC <...> -15 (x2)