RK4U — FT8 station from European Russia

European Russia Grid: ?

Amateur radio station RK4U operating from European Russia. 285 FT8 spots received at SO8OO WebSDR, 50 CQ calls, active on 40m, 20m, over 9 days, best SNR +20 dB. Heard between 2026-04-25 and 2026-05-25.

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

Overview

285
Total spots
50
CQ calls
9
Days active
-7 dB
Avg SNR

Bands

20m 40m
First seen: 2026-04-25
Last seen: 2026-05-25 14:09 UTC

Frequent QSO partners observed at SO8OO

Stations RK4U worked most often, as logged from our receiver:

Activity Heatmap

Location

QSO Logbook (as observed from SO8OO)

Format: our rx / partner reports

TimeBandRK4UPartnerPartner SNRMsgs
05-25 16:06 40m +3 / - E70SZ - / - 4 Partial
05-25 16:01 40m -10 / - R1LH - / -8 4 ✓ Confirmed
05-25 15:33 40m -10 / - UB3FDA - / +1 2 ✓ Confirmed
05-25 15:30 40m -20 / - R2EA/P - / -1 2 ✓ Confirmed
05-25 15:13 20m - / -15 SP9PLK +3 / - 2 ✓ Confirmed
05-25 15:04 20m - / -19 SP9EVL +5 / - 5 ✓ Confirmed
05-25 14:57 20m -11 / - R9BT - / -9 2 Partial
05-25 14:53 20m -6 / -20 RU3QR +1 / -8 9 ✓ Complete
05-25 14:47 20m - / -12 BI1RRE +1 / - 3 ✓ Confirmed
05-25 14:45 20m +11 / - BI4XDT - / -13 3 ✓ Confirmed
05-25 14:45 20m +10 / - F4FSY - / -13 2 Partial
05-25 14:21 20m +6 / - UB6OAJ - / -7 2 ✓ Confirmed
05-25 14:17 20m -18 / - VU2FR - / - 2 Partial
05-24 17:11 40m 0 / - DH0GBC - / -11 6 Partial
05-24 17:08 40m - / -20 UN7GRK -16 / - 2 ✓ Confirmed
05-24 17:06 40m - / -14 BA5AN -18 / - 2 ✓ Confirmed
05-24 17:03 40m -14 / - R6DVV - / - 3 Partial
05-24 17:02 40m - / - EX8ABR/P -20 / - 2 ✓ Confirmed
05-24 16:52 40m -18 / - UA3PTY - / +1 2 ✓ Confirmed
05-24 16:51 40m -16 / - OH6IH - / -8 2 Partial
05-24 16:51 40m -12 / - RA6FRI - / -13 2 ✓ Confirmed
05-24 16:45 40m -6 / - R2APC - / - 3 Partial
05-24 16:42 40m -4 / - RU3T - / - 2 ✓ Confirmed
05-24 16:37 40m -18 / - OH6IH - / -11 3 Partial
05-24 16:37 40m 0 / - SP9UPH - / -14 5 Partial
05-24 16:22 20m -14 / - UB6OCP - / - 2 Partial
05-24 16:21 20m -10 / - OE5TXF - / -15 2 Partial
05-22 16:55 20m +6 / - IK4TVP - / -2 2 ✓ Confirmed
05-22 16:42 40m -11 / - RM5F - / -7 2 ✓ Confirmed
05-22 16:41 40m -8 / - LZ2SPD - / - 2 Partial
05-22 16:38 40m +2 / - DB2HA - / -5 7 ✓ Confirmed
05-22 16:38 40m -19 / - UA3ECJ - / -6 3 ✓ Confirmed
05-22 16:33 40m -10 / - LZ2SPD - / - 2 Partial
05-22 16:26 40m +1 / - E70SZ - / - 2 Partial
05-22 16:15 20m -10 / - PE9JAN - / -22 2 ✓ Confirmed
05-13 16:13 40m +4 / - DK7UY - / - 2 Partial
05-13 16:11 40m -20 / - RC9WC -18 / -1 3 ✓ Verified
05-13 16:10 40m -10 / +1 RA3SO -16 / -10 4 ✓ Complete
05-13 15:37 20m -14 / +6 RG5A -20 / -1 4 ✓ Complete
05-13 15:13 20m -10 / - UA9OBN - / +2 2 ✓ Confirmed
05-13 15:11 20m -18 / -6 YB1BZV -12 / -7 4 ✓ Complete
05-13 14:21 20m -17 / - G6PWS - / - 2 Partial
05-13 14:12 20m -15 / - RU0LL - / -17 3 ✓ Confirmed
05-13 13:59 20m -14 / - GJ0KYZ - / -18 2 Partial
05-11 03:58 20m -11 / - UN7GME - / -10 3 ✓ Confirmed
05-11 03:31 20m -18 / - R9UIW - / -17 2 ✓ Confirmed
05-11 03:17 20m -3 / - RA0SCA - / - 2 Partial
05-11 03:08 20m +17 / - OD5KU - / -22 3 ✓ Confirmed
05-10 17:59 20m -10 / - PD7JLP - / - 2 Partial
05-10 17:58 20m +6 / - F4FLF - / - 4 Partial

Station Log

40m 
UTC    dB  Freq  Message
153030 -19 2137  RK4U R2EA/P -01 (x2)
153300  -8 1037  RK4U UB3FDA +01 (x2)
155930  +1 1434  RK4U E70SZ JN84
160130 -14 2563  RK4U R1LH KO59 (x4)
160600  +2 1434  RK4U E70SZ JN84 (x4)
160830 -14 2566  RK4U R1LH KO59
160930 -17 2487  RK4U R5GG +01
20m 
UTC    dB  Freq  Message
150615  +6 1468  SP9EVL RK4U RR73 (x2)
150715  +3 1468  CQ RK4U LO24 (x5)
151045  +5 1467  BG2EZM RK4U RR73
151215  +6 1467  CQ RK4U LO24 (x3)
151345  +4 1467  SP9PLK RK4U -15 (x2)
151715  -4 1468  CQ RK4U LO24
152645  -7 1467  RW1AI RK4U RR73

SNR History by Band