DS4DBF — FT8 station from Republic of Korea

Republic of Korea Grid: JO21

Amateur radio station DS4DBF operating from Republic of Korea (grid square JO21). 137 FT8 spots received at SO8OO WebSDR, active on 40m, 20m, 10m, over 11 days, best SNR +22 dB. Heard between 2026-04-21 and 2026-05-13.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee

Overview

137
Total spots
0
CQ calls
11
Days active
-3 dB
Avg SNR

Bands

20m 40m 10m
First seen: 2026-04-21
Last seen: 2026-05-13 19:11 UTC

Frequent QSO partners observed at SO8OO

Stations DS4DBF worked most often, as logged from our receiver:

Activity Heatmap

Location

QSO Logbook (as observed from SO8OO)

Format: our rx / partner reports

TimeBandDS4DBFPartnerPartner SNRMsgs
05-13 21:11 20m -2 / - PD3FJJ - / - 2 Partial
05-13 21:07 20m -12 / - PD2PE - / - 5 Partial
05-13 21:04 40m -7 / - TA2GG - / - 4 Partial
05-13 20:35 40m -3 / - ON4WX - / - 7 Partial
05-12 20:36 40m -12 / - R7GA - / - 2 Partial
05-12 20:34 40m +4 / - PA3HFT - / - 2 Partial
05-12 20:34 40m +4 / - US2YW - / - 3 Partial
05-12 20:31 40m -18 / - G3YPP - / - 4 Partial
05-12 20:31 40m +13 / - DL3MIB - / -12 3 ✓ Confirmed
05-12 20:31 40m +2 / - US2YW - / - 2 Partial
05-12 10:21 20m +18 / - ON6AA - / -12 8 ✓ Confirmed
05-11 21:54 20m 0 / -14 ZB2CM -8 / - 10 ✓ Verified
05-06 21:37 20m +2 / - EA1FUB - / - 4 Partial
05-06 21:34 20m +13 / -8 EA5BYS -13 / -5 3 Partial
05-06 21:33 20m - / - TF4M -12 / - 3 Partial
05-06 21:32 20m +5 / - EA5JKT - / - 2 Partial
05-06 21:31 20m - / - YT3D -8 / - 3 Partial
05-04 21:42 20m -21 / - F5RRS - / -18 4 ✓ Confirmed
05-04 21:38 20m +2 / - EC3A - / -10 2 ✓ Confirmed
05-04 21:37 20m +10 / - JY5IB - / -11 2 ✓ Confirmed
04-30 16:08 20m - / - 7P8WR -6 / - 3 Partial
04-30 15:11 20m -10 / - UA9LLE - / - 4 Partial
04-23 21:57 20m -18 / - TF8KW - / -7 2 ✓ Confirmed
04-23 20:55 40m - / - JW5E -20 / - 2 Partial
04-22 21:10 40m +7 / - <...> - / -9 4 Partial
04-22 21:10 40m - / - DF40ABF -20 / - 2 Partial
04-22 20:54 40m -4 / - DL8LE - / -5 2 Partial
04-22 20:52 40m - / - <...> -18 / - 2 Partial
04-22 20:52 40m +6 / - EK/RX3DPK - / -13 5 Partial
04-22 20:51 40m -9 / - EA5CQM - / - 3 Partial
04-22 20:48 40m -5 / -23 DL8LE -10 / -5 8 Partial
04-22 20:48 40m +2 / - EK/RX3DPK - / -9 3 Partial
04-22 20:48 40m -10 / -17 OE9HGV -13 / -18 7 Partial
04-22 20:46 40m -13 / -13 CN8NS -19 / -12 7 ✓ Complete
04-22 20:46 40m -10 / - EA7DHT - / - 9 Partial
04-22 20:41 40m - / -11 CN8NS -19 / - 3 Partial
04-22 20:41 40m -24 / - EA3IGC - / -15 2 Partial
04-22 20:40 40m +7 / - <...> -22 / -14 2 Partial
04-22 20:38 40m +7 / - EK/RX3DPK - / -8 3 Partial
04-22 20:34 40m - / - OZ4LAMA -18 / - 2 Partial
04-21 20:56 40m -4 / - 9A60CBM - / -6 3 Partial
04-21 20:56 40m - / -14 <...> -12 / - 5 Partial
04-21 20:52 40m - / -9 BG3NQT -15 / - 2 Partial
04-21 20:51 40m - / - 5N8GJJ -18 / - 2 Partial
04-21 20:47 40m - / - YU1UN -16 / - 2 Partial

Station Log

20m 
UTC    dB  Freq  Message
102400 +16 1129  DS4DBF ON6AA R-12 (x2)
210300  +3 2262  DS4DBF 9H4JX RR73
210330  +2 2263  DS4DBF RR73; JA1XGI <N1FR> -12
210615 -23 1728  Z34K DS4DBF PM34
210730 -23 1731  DS4DBF PD2PE JO21
210800 -21 1678  DS4DBF UA0JBY PO30
210800  -6 1731  DS4DBF PD2PE JO21
210830  +2 2468  DS4DBF PD3FJJ JO21
210830  -9 1732  DS4DBF PD2PE JO21 (x3)
211100  -1 2468  DS4DBF PD3FJJ JO21
211130 -22 1674  DS4DBF UA0JBY PO30
211130  -3 2468  DS4DBF PD3FJJ JO21
40m 
UTC    dB  Freq  Message
203700 -13 1414  DS4DBF R7GA LN14
203530  +0 1142  DS4DBF EA3DBJ JN00
203530  -2 2144  DS4DBF ON4WX JN29 (x8)
210200  +7 2631  DS4DBF DJ2KP JO42
210400  -7 1050  DS4DBF TA2GG KM59 (x4)
10m 
UTC    dB  Freq  Message
100645 -22 2089  DS4DBF 8Q7PR 73
102400 -15  813  DS4DBF ZS3W RR73

SNR History by Band