RU4AJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Locator transmitted in a decoded message: LO00

Receiver-side FT8 activity involving RU4AJ, decoded by SO8OO in southeastern Poland. 132 related FT8 messages, observed on 80m, 40m, 20m, 10m, across 35 UTC dates. Heard between 2026-05-28 and 2026-08-23.

These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.

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Overview

132
Related messages
0
CQ messages
35
UTC dates heard
-8 dB
Mean decoder S/N

Bands

80m 40m 20m 10m
First seen: 2026-05-28
Last seen: 2026-08-23 15:17 UTC

Frequent QSO partners observed at SO8OO

Stations RU4AJ worked most often, as logged from our receiver:

Activity Heatmap

Locator transmitted by RU4AJ

Approximate centre of LO00, decoded 2026-08-23 19:14 UTC. A transmitted locator is not proof of the operator's permanent location.

Observed FT8 exchanges

S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.

Time UTCBandRU4AJ S/NCounterpartCounterpart S/NMsgsCapture
08-23 19:13 40m +10 / - R6UBN - / - 2 Partial capture
08-23 17:17 40m +1 / - RA9DZ -4 / - 2 ✓ Closing observed
08-21 20:28 40m +7 / - VK3NX -16 / -17 5 ✓ Closing observed
08-20 15:40 40m -6 / - R9JE - / -12 3 ✓ Closing fragment
08-20 15:38 40m - / -13 DL1DXX -9 / - 3 Partial capture
08-20 15:38 40m -6 / +4 RX4SA -14 / -7 5 ✓ Full exchange observed
08-20 15:36 40m -7 / - RW9MZ - / -16 3 ✓ Closing fragment
08-20 05:46 20m -11 / - TA2EE - / -15 2 ✓ Closing fragment
08-20 05:45 20m -9 / - RU6UR - / -2 3 ✓ Closing fragment
08-19 22:48 40m +3 / -13 EA8UP -1 / - 4 ✓ Closing observed
08-19 22:46 40m -2 / - PY1GB - / - 2 Partial capture
08-19 22:45 40m -5 / - EA5HM - / -5 2 ✓ Closing fragment
08-19 22:44 40m +2 / - ON1JP - / -16 2 ✓ Closing fragment
08-19 22:42 40m -11 / -6 SM3ULU -20 / -12 4 ✓ Full exchange observed
08-19 22:40 40m -14 / - TN8GD - / - 3 ✓ Closing fragment
08-19 22:31 40m +3 / - AP5ARS - / - 2 Partial capture
08-16 20:33 40m -6 / - VK2BC - / -20 2 ✓ Closing fragment
08-16 20:30 40m -7 / - JH4ADV - / -7 3 ✓ Closing fragment
08-16 20:25 40m -2 / +10 RA3ZOM -9 / +1 7 ✓ Full exchange observed
08-16 20:24 40m - / -7 RX3ASQ -16 / - 3 ✓ Closing fragment
08-16 20:06 10m -6 / - LU3HBA - / -12 2 ✓ Closing fragment
08-15 19:28 80m 0 / - RC0AT/P - / -20 5 ✓ Closing fragment
08-15 17:15 80m +2 / - RA9MAI - / -11 4 ✓ Closing fragment
08-15 16:42 40m - / -9 DL1DXX -13 / - 3 ✓ Closing fragment
08-15 16:39 40m -10 / -5 UA3WDO -19 / -17 6 Partial capture
08-12 18:04 80m +6 / - RV3SBS/P - / -7 3 ✓ Closing fragment
08-12 07:01 10m -9 / - VK3OE - / - 4 Partial capture
08-11 19:19 20m -10 / - TT1GD - / -15 3 Partial capture
08-08 18:57 80m +7 / - RA2FU - / -15 3 ✓ Closing fragment
08-08 18:55 80m +11 / - RA4ABH -1 / +2 5 ✓ Full exchange observed
08-08 18:53 80m +2 / -3 R4UA +2 / -8 5 ✓ Full exchange observed
08-08 18:52 80m +2 / -3 RA3WY +4 / 0 4 ✓ Full exchange observed
08-08 18:50 80m +4 / - R8LDJ - / -23 3 ✓ Closing fragment
08-08 18:42 80m 0 / -10 UA9ZZ -19 / -11 5 ✓ Full exchange observed
08-08 17:33 40m -10 / - UA9FLJ - / -16 2 ✓ Closing fragment
08-08 17:29 40m -13 / - BA4II - / -19 3 ✓ Closing fragment
08-08 17:27 40m -9 / -4 RW6ATD -7 / - 3 ✓ Closing observed
08-08 17:25 40m -10 / - UA9LLE - / -14 2 ✓ Closing fragment
08-08 17:24 40m -8 / - UN7MBF - / -7 2 ✓ Closing fragment
08-08 11:38 20m -14 / - RM5F - / -11 2 ✓ Closing fragment
08-07 19:32 80m -2 / - R2UC - / -4 3 ✓ Closing fragment
08-07 19:16 80m -4 / - UB0SMX/P - / -14 3 Partial capture
08-07 19:10 80m +2 / -19 IU0RKJ -6 / -15 6 ✓ Full exchange observed
08-07 19:10 80m +4 / +9 UB6OAK -10 / - 3 ✓ Closing observed
08-07 19:08 80m +2 / - <...> -4 / -8 3 Partial capture
08-07 19:06 80m +1 / -11 SP6FME +2 / -11 7 Partial capture
08-07 19:05 80m +2 / - R9FF - / -9 2 ✓ Closing fragment
08-07 18:56 80m +2 / -1 LZ2INP +12 / -5 6 ✓ Full exchange observed
08-07 18:55 80m 0 / - R2GFD - / - 2 ✓ Closing fragment
08-07 18:53 80m +3 / - RQ3D - / -6 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

40m 
UTC    dB Audio  Message
153915  -6 1359  RU4AJ DL1DXX -13 (x2)
154030  -5  901  R9JE RU4AJ LO00 (x3)
154315  -8  900  RA0WBI RU4AJ R-23
202815 +10  545  VK3NX RU4AJ LO00 (x3)
202930 -16  398  RU4AJ VK3NX RR73
202945  +5  545  VK3NX RU4AJ 73
171700  +1  503  RA9DZ RU4AJ LO00
171745  -4 2367  RU4AJ RA9DZ RR73
191330 +11  503  R6UBN RU4AJ LO00 (x2)
20m 
UTC    dB Audio  Message
113630 -14  792  UB8QBY RU4AJ R-06
113800 -13  792  A41ZZ RU4AJ 73
113830 -14  780  RM5F RU4AJ -11 (x2)
114130 -10  779  R1NIM RU4AJ R-13
193400 -11  618  NV8B RU4AJ LO00
191915 -11  565  TT1GD RU4AJ LO00 (x3)
054000 -17 1130  RU4AJ R6DZR KN84
054500 -10  667  RU6UR RU4AJ LO00 (x3)
054630 -12  666  TA2EE RU4AJ -15 (x2)
10m 
UTC    dB Audio  Message
095215 -15  245  RA9FDR RU4AJ -14 (x2)
095315 -16  246  OK1FRG RU4AJ -11
090145 -11  305  RK0S RU4AJ R-16
142700  -9  251  KB2PIW RU4AJ LO00 (x3)
174800  -5  333  R1BPZ RU4AJ R-07
070145  -9  352  VK3OE RU4AJ LO00 (x4)
200500  -6  445  PR7KH RU4AJ LO00
200615  -6  446  LU3HBA RU4AJ R-12 (x2)
80m 
UTC    dB Audio  Message
180445  +7  994  RV3SBS/P RU4AJ LO00 (x3)
190445  -2 1159  UA0TP RU4AJ LO00
211030  -1 1191  VK5PJ RU4AJ LO00
171530  -3 1089  RA9MAI RU4AJ LO00 (x4)
192830  +8 1290  RC0AT/P RU4AJ LO00 (x5)
193115  +1 2705  RU4AJ R3BDQ RR73

Decoder S/N history by band

Daily averages across messages associated with this profile as decoded at SO8OO.