S21SDR — FT8 station from Bangladesh
Amateur radio station S21SDR operating from Bangladesh. 205 FT8 spots received at SO8OO WebSDR, active on 80m, 40m, 20m, 10m, over 29 days, best SNR +17 dB. Heard between 2026-04-21 and 2026-06-28.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee
Overview
205
Total spots
0
CQ calls
29
Days active
-4 dB
Avg SNR
Bands
80m
20m
40m
10m
First seen: 2026-04-21
Last seen: 2026-06-28 19:28 UTC
Last seen: 2026-06-28 19:28 UTC
Frequent QSO partners observed at SO8OO
Stations S21SDR worked most often, as logged from our receiver:
Activity Heatmap
Location
QSO Logbook (as observed from SO8OO)
Format: our rx / partner reports
| Time | Band | S21SDR | Partner | Partner SNR | Msgs | |
|---|---|---|---|---|---|---|
| 06-28 21:27 | 20m | -8 / - | M7NTL | - / -26 | 2 | Partial |
| 06-26 19:17 | 20m | -20 / - | JA0LFV | - / -16 | 2 | Partial |
| 06-25 12:58 | 20m | +6 / - | IK3ORD | - / - | 2 | Partial |
| 06-24 23:22 | 20m | -10 / - | F4BYA | - / - | 2 | Partial |
| 06-24 19:37 | 20m | -17 / - | RW4M | - / - | 4 | Partial |
| 06-20 17:27 | 20m | -9 / - | UA3ZQN | - / -13 | 3 | ✓ Confirmed |
| 06-19 14:49 | 20m | 0 / - | RW0AR | - / - | 2 | Partial |
| 06-19 14:48 | 20m | +6 / - | PD7RF | - / -18 | 3 | Partial |
| 06-18 18:33 | 80m | +3 / - | UA4FKT | - / - | 2 | Partial |
| 06-18 18:28 | 80m | 0 / - | UA4FKT | - / - | 5 | Partial |
| 06-18 18:16 | 80m | -18 / - | RV9FF | - / - | 6 | Partial |
| 06-18 18:09 | 80m | -11 / - | UA4FKT | - / - | 2 | Partial |
| 06-18 18:00 | 40m | +4 / - | OH5KNL | - / -10 | 6 | ✓ Confirmed |
| 06-18 18:00 | 40m | -9 / - | UR5ZHJ | - / -17 | 11 | ✓ Confirmed |
| 06-18 17:59 | 40m | -11 / - | RK6ABM | - / -10 | 3 | ✓ Confirmed |
| 06-18 17:59 | 40m | -7 / - | PD3FJJ | - / - | 3 | Partial |
| 06-18 17:57 | 40m | -12 / - | RW3VM | - / - | 3 | Partial |
| 06-18 15:58 | 20m | -8 / - | OH6NIO | - / - | 2 | Partial |
| 06-11 18:30 | 20m | -8 / - | RX9L | - / -13 | 3 | ✓ Confirmed |
| 06-11 18:19 | 20m | 0 / - | LB1R | - / -13 | 4 | ✓ Confirmed |
| 06-11 18:13 | 20m | -18 / - | SM3EDF | - / -18 | 2 | Partial |
| 06-11 18:10 | 20m | +5 / - | R8CEM | - / -23 | 6 | Partial |
| 06-09 21:33 | 20m | +4 / - | 4X1ZQ | - / - | 3 | Partial |
| 06-07 21:04 | 20m | +9 / - | CT1APN | - / - | 3 | Partial |
| 06-07 21:00 | 20m | -14 / - | MM0PJQ | - / -19 | 2 | Partial |
| 06-07 20:59 | 20m | +2 / - | IW9EWX | - / -11 | 7 | Partial |
| 06-07 16:18 | 20m | -4 / - | R3NC | - / -16 | 3 | Partial |
| 06-07 16:16 | 20m | -7 / - | MM0HVU | - / -20 | 2 | Partial |
| 06-07 16:16 | 20m | -18 / - | OZ1JMJ | - / - | 3 | Partial |
| 06-07 16:14 | 20m | -8 / - | R9CB | - / - | 2 | ✓ Confirmed |
| 05-22 17:32 | 20m | -4 / - | UB4HVA | - / - | 2 | Partial |
| 05-20 19:11 | 40m | -1 / - | G7RAU | - / -18 | 3 | ✓ Confirmed |
| 05-19 17:46 | 20m | -9 / - | LZ2XF | - / - | 2 | Partial |
| 05-16 11:48 | 20m | -3 / - | JA5OP | - / - | 3 | Partial |
| 05-14 16:29 | 20m | +6 / - | IT9BCC | - / -16 | 2 | Partial |
| 05-08 20:11 | 20m | -10 / - | F4CPJ | - / -24 | 2 | ✓ Confirmed |
| 05-08 19:49 | 20m | -4 / - | F4CWZ | - / - | 2 | Partial |
| 05-08 19:46 | 20m | -4 / - | IU0RKJ | - / -23 | 4 | ✓ Confirmed |
| 05-07 20:24 | 20m | +12 / - | 4X5LL | - / - | 2 | Partial |
| 05-07 20:13 | 20m | +1 / - | JE1FQV | - / -13 | 3 | ✓ Confirmed |
| 05-07 19:48 | 20m | -4 / - | OH5BRB | - / -20 | 2 | Partial |
| 05-06 17:12 | 20m | -1 / - | 2E0MTK | - / -16 | 3 | Partial |
| 05-06 17:11 | 20m | 0 / - | R4PF | - / - | 3 | Partial |
| 04-30 17:22 | 20m | -11 / - | UB6HRZ | - / - | 3 | Partial |
| 04-28 17:24 | 20m | -1 / - | UA3ZSI | - / - | 3 | Partial |
| 04-28 15:34 | 20m | +6 / - | UA3PRS | - / - | 2 | Partial |
| 04-27 18:30 | 20m | -10 / - | LA1PHA | -24 / -17 | 3 | ✓ Verified |
| 04-26 14:26 | 20m | +1 / - | F1PSX | - / - | 11 | Partial |
| 04-26 08:31 | 10m | -18 / - | DK6SP | - / - | 2 | Partial |
| 04-25 18:55 | 20m | +13 / - | IS0DDL | - / -20 | 5 | Partial |
Station Log
20m
UTC dB Freq Message 174045 +0 1206 S21SDR DD1OO -15 193245 -8 2687 S21SDR LB8OH JP20 193315 -14 2484 S21SDR JA0JWQ -16 193715 -15 1777 S21SDR RW4M LO44 (x4) 232215 -10 359 S21SDR F4BYA JN19 (x2) 125845 +7 2033 S21SDR IK3ORD JN55 (x2) 191715 -21 2136 S21SDR JA0LFV -16 (x2) 212730 -10 2702 S21SDR M7NTL R-26 (x2)
10m
UTC dB Freq Message 142215 -6 965 S21SDR ZS3W KG01 (x5) 083145 -18 1847 S21SDR DK6SP JN68 (x2) 122045 -5 633 S21SDR GJ0KYZ IN89
80m
UTC dB Freq Message 181045 -12 1396 S21SDR UA4FKT LO23 181645 -22 2394 S21SDR RV9FF LO87 (x6) 182815 -2 1396 S21SDR UA4FKT LO23 (x7) 195645 +17 541 S21SDR YO4NT -23
40m
UTC dB Freq Message 180115 -10 1974 S21SDR UR5ZHJ -17 180115 +6 2490 S21SDR OH5KNL KP30 180145 -13 1974 S21SDR UR5ZHJ -16 180145 +6 2548 S21SDR OH5KNL KP30 180215 -8 1974 S21SDR UR5ZHJ -14 180215 +2 2548 S21SDR OH5KNL R-10 180245 -8 1974 S21SDR UR5ZHJ -14 180245 +6 2548 S21SDR OH5KNL R-04 180315 -10 1974 S21SDR UR5ZHJ -14 180315 +7 2548 S21SDR OH5KNL 73 180345 -10 1974 S21SDR UR5ZHJ -14 (x5)