YB4SIZ — FT8 station from Indonesia
Amateur radio station YB4SIZ operating from Indonesia (grid square JO50). 131 FT8 spots received at SO8OO WebSDR, 4 CQ calls, active on 40m, 20m, 10m, over 12 days, best SNR +19 dB. Heard between 2026-06-06 and 2026-07-21.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee
Overview
131
Total spots
4
CQ calls
12
Days active
-5 dB
Avg SNR
Bands
20m
40m
10m
First seen: 2026-06-06
Last seen: 2026-07-21 12:19 UTC
Last seen: 2026-07-21 12:19 UTC
Frequent QSO partners observed at SO8OO
Stations YB4SIZ worked most often, as logged from our receiver:
Activity Heatmap
Location
QSO Logbook (as observed from SO8OO)
Format: our rx / partner reports
| Time | Band | YB4SIZ | Partner | Partner SNR | Msgs | |
|---|---|---|---|---|---|---|
| 07-21 13:27 | 20m | +3 / - | OM0RX | - / - | 3 | Partial |
| 07-07 10:06 | 10m | -17 / - | R7DX | - / - | 3 | ✓ Confirmed |
| 06-17 14:28 | 20m | -5 / - | RV9WJP | - / - | 3 | Partial |
| 06-17 13:43 | 20m | -12 / - | RZ4FWA | - / - | 3 | Partial |
| 06-16 15:32 | 20m | - / - | K7MNF | -18 / - | 2 | Partial |
| 06-16 15:31 | 20m | - / -13 | W7ZR | -21 / - | 3 | ✓ Confirmed |
| 06-16 15:28 | 20m | - / - | WU7W | -21 / - | 3 | ✓ Confirmed |
| 06-16 15:16 | 20m | +2 / - | GW4RDW | - / - | 2 | Partial |
| 06-16 15:07 | 20m | 0 / - | UB4CJS | - / -20 | 13 | Partial |
| 06-16 14:51 | 20m | -4 / - | RV9WJP | - / - | 4 | Partial |
| 06-16 14:05 | 20m | +3 / - | PD7JLP | - / -26 | 13 | Partial |
| 06-15 15:36 | 20m | -11 / - | RN1CW | - / - | 3 | Partial |
| 06-15 14:25 | 20m | -2 / - | IT9CMZ | - / - | 2 | Partial |
| 06-12 00:05 | 40m | -4 / - | K4RUM | - / -15 | 2 | ✓ Confirmed |
| 06-10 14:57 | 20m | -13 / - | UA3PRS | - / - | 2 | Partial |
| 06-10 14:56 | 20m | -18 / - | DH2YBG | - / - | 3 | Partial |
| 06-10 14:46 | 20m | -20 / - | RU3KV | - / - | 3 | Partial |
| 06-10 13:46 | 20m | -2 / - | OH2XO | - / - | 5 | Partial |
| 06-09 14:21 | 20m | -9 / - | RG0S | - / - | 3 | Partial |
| 06-08 14:51 | 20m | -12 / - | UA3PRS | - / - | 3 | Partial |
| 06-08 14:47 | 20m | -4 / - | RV9WJP | - / - | 4 | Partial |
| 06-08 14:41 | 20m | -12 / - | UN1EAU | - / - | 3 | Partial |
| 06-08 12:49 | 20m | -10 / - | W9DHI | - / -9 | 2 | Partial |
| 06-07 15:02 | 20m | +10 / - | EA3RR | - / - | 18 | Partial |
| 06-06 14:12 | 20m | +4 / - | OH2XO | - / - | 4 | Partial |
| 06-06 13:23 | 10m | -22 / - | SV9TRN | - / -12 | 2 | Partial |
| 06-06 12:19 | 10m | - / -10 | UX2SB | 0 / - | 2 | ✓ Confirmed |
| 06-06 12:18 | 10m | - / -13 | YT1UBN | -5 / - | 2 | ✓ Confirmed |
| 06-06 12:16 | 10m | - / -7 | Z35T | -4 / - | 2 | ✓ Confirmed |
| 06-06 12:16 | 10m | -9 / -12 | RZ4FWA | -2 / - | 4 | Partial |
| 06-06 12:15 | 10m | - / -10 | YO4DW | -4 / - | 2 | ✓ Confirmed |
| 06-06 12:13 | 10m | - / -7 | EA5AJX | -8 / - | 2 | ✓ Confirmed |
| 06-06 12:12 | 10m | - / -16 | OK1DXR | -2 / - | 2 | ✓ Confirmed |
| 06-06 12:11 | 10m | - / -7 | IU0VOG | -2 / - | 2 | ✓ Confirmed |
Station Log
20m
UTC dB Freq Message 141845 -14 735 YB4SIZ LA9GX JO59 142815 -6 295 YB4SIZ RV9WJP MP72 (x3) 144715 -16 2560 YB4SIZ BH4GUO -09 (x3) 231745 -21 1351 K7STO YB4SIZ R-21 231915 -21 1351 DK7ZT YB4SIZ R-18 231945 -23 1350 SP6AXW YB4SIZ -14 232145 -24 1351 CQ USA YB4SIZ OI24 132730 -3 1577 YB4SIZ OM0RX JN88 (x3) 141945 -4 655 YB4SIZ DL4FCK JO50
10m
UTC dB Freq Message 121945 +0 1706 UX2SB YB4SIZ RR73 131245 -15 1837 CQ US YB4SIZ OI24 (x2) 131445 -15 1837 IK7UFX YB4SIZ 73 131545 -20 1838 SP9SOF YB4SIZ RR73 131615 -17 1838 UA0LQE YB4SIZ -05 131745 -18 1838 CQ US YB4SIZ OI24 132115 -16 1837 YL2CI YB4SIZ 73 132300 -19 1838 YB4SIZ SV9TRN -12 (x2) 100600 -18 1658 YB4SIZ DN9OPA JN38 100630 -15 1777 YB4SIZ R7DX KN84 (x3) 102630 -18 1786 YB4SIZ F4FSY -11
40m
UTC dB Freq Message 000545 -4 2639 YB4SIZ K4RUM -15 (x2)