RC5Z — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Locator transmitted in a decoded message: KO81

Receiver-side FT8 activity involving RC5Z, decoded by SO8OO in southeastern Poland. 118 related FT8 messages, 33 CQ messages, observed on 40m, 20m, across 1 UTC dates. Last heard 2026-08-24.

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.

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

Overview

118
Related messages
33
CQ messages
1
UTC dates heard
-6 dB
Mean decoder S/N

Bands

40m 20m
First seen: 2026-08-24
Last seen: 2026-08-24 13:46 UTC

Frequent QSO partners observed at SO8OO

Stations RC5Z worked most often, as logged from our receiver:

Locator transmitted by RC5Z

Approximate centre of KO81, decoded 2026-08-24 15:46 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 UTCBandRC5Z S/NCounterpartCounterpart S/NMsgsCapture
08-24 15:46 40m -6 / - RV3SBS - / -1 2 ✓ Closing fragment
08-24 15:45 40m -10 / +3 R3PJ -4 / +3 5 ✓ Full exchange observed
08-24 15:43 40m - / - DL3KVR -2 / - 2 Partial capture
08-24 15:42 40m - / - DL6CMF 0 / - 3 Partial capture
08-24 15:41 40m - / - DJ0MAB -14 / - 2 Partial capture
08-24 15:39 40m - / - R3SN -3 / - 3 Partial capture
08-24 15:39 40m - / +8 RA3TKS -2 / - 2 Partial capture
08-24 15:39 40m - / - UB6OCP -6 / - 5 Partial capture
08-24 15:37 40m - / - R3TKM -7 / - 2 Partial capture
08-24 15:35 40m -10 / +1 UB4CLH -11 / +3 11 ✓ Full exchange observed
08-24 15:34 40m - / - DL2HUC -4 / - 2 Partial capture
08-24 15:33 40m -9 / - JG3QBJ - / -13 2 ✓ Closing fragment
08-24 15:30 40m - / - R3TKM -5 / - 5 Partial capture
08-24 15:28 40m -14 / -2 RZ6LY -2 / +1 4 ✓ Full exchange observed
08-24 15:25 40m -12 / - R9UIQ - / -13 2 ✓ Closing fragment
08-24 15:23 40m -14 / - VK4LW - / -11 2 ✓ Closing fragment
08-24 15:22 40m - / - RU3T -6 / - 2 Partial capture
08-24 15:20 40m -14 / - RA3AJT -1 / +1 3 ✓ Closing observed
08-24 15:19 40m -13 / - BG7BMG - / -7 2 ✓ Closing fragment
08-24 14:56 20m -10 / -3 UN7PNF -4 / +2 8 ✓ Full exchange observed
08-24 14:53 20m - / -11 IQ4JO +13 / - 3 ✓ Closing fragment
08-24 14:50 20m - / - TA3F +1 / - 4 Partial capture
08-24 14:46 20m - / - M8KKH +3 / - 5 Partial capture
08-24 14:45 20m -6 / - VR2VAZ - / -13 2 ✓ Closing fragment
08-24 14:44 20m - / - IU5HIU -1 / - 9 Partial capture
08-24 14:42 20m - / +3 BI4XDT -8 / - 3 ✓ Closing fragment
08-24 14:38 20m - / -12 RL3QGD -13 / - 5 ✓ Closing fragment
08-24 14:36 20m -2 / - BH4GUO - / -16 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
154245 -11 1454  CQ RC5Z KO81
154300  -2  978  RC5Z DL6CMF JO52
154315 -10 1454  BD6RAV RC5Z -09
154330  +2  442  RC5Z DL3KVR JO64 (x2)
154445 -11 1454  CQ RC5Z KO81                          a1
154500  -7 1149  RC5Z R3PJ KO84
154515  -8 1454  R3PJ RC5Z +03
154530  -3 1149  RC5Z R3PJ R+03
154545 -11 1454  R3PJ RC5Z RR73
154600  -1 1149  RC5Z R3PJ 73
154615  -7 1454  CQ RC5Z KO81
154630 -16 1454  RC5Z DL1EFX JO30
154645  -7 1454  RV3SBS RC5Z -01 (x2)
20m 
UTC    dB Audio  Message
145600  -4 2016  RC5Z UN7PNF -03 (x4)
145815 -11 2387  CQ RC5Z KO81
145830  -5 2016  RC5Z UN7PNF -03 (x2)
145945 -10 2387  UN7PNF RC5Z R+02 (x2)
150045 -12 2387  CQ RC5Z KO81
150145 -10 2388  BD6KDG RC5Z RR73
150215 -10 2387  BG4LNW RC5Z R-13
150545  -7 2387  CQ RC5Z KO81
150630 -20 2080  RC5Z PI4TX JO22
150815  -6 2387  CQ RC5Z KO81