RZ3DX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Locator transmitted in a decoded message: KO85

Receiver-side FT8 activity involving RZ3DX, decoded by SO8OO in southeastern Poland. 235 related FT8 messages, 24 CQ messages, observed on 160m, 80m, 40m, 20m, 10m, across 40 UTC dates. Heard between 2026-04-22 and 2026-07-20.

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

235
Related messages
24
CQ messages
40
UTC dates heard
-7 dB
Mean decoder S/N

Bands

80m 20m 40m 10m 160m
First seen: 2026-04-22
Last seen: 2026-07-20 07:46 UTC

Frequent QSO partners observed at SO8OO

Stations RZ3DX worked most often, as logged from our receiver:

Activity Heatmap

Locator transmitted by RZ3DX

Approximate centre of KO85, decoded 2026-08-11 08:04 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 UTCBandRZ3DX S/NCounterpartCounterpart S/NMsgsCapture
08-04 19:07 160m -12 / - R1TAX - / -2 2 ✓ Closing fragment
07-26 02:58 40m -11 / - <...> - / - 4 Partial capture
07-26 02:25 40m -18 / - RK3DWA/3 - / - 2 Partial capture
07-20 09:42 10m - / +5 RL1B -19 / - 2 ✓ Closing fragment
07-20 09:41 10m -7 / - R4RY - / -8 2 Partial capture
07-19 07:46 10m - / - R2EC 0 / - 2 Partial capture
07-19 07:43 10m -16 / -3 R6ZI -16 / - 6 ✓ Closing observed
07-18 06:41 10m -10 / - BA5AG - / -13 2 Partial capture
07-18 06:36 10m - / - RC6BB -19 / - 3 ✓ Closing fragment
07-18 06:34 10m -5 / - UB3ADO/P - / - 3 ✓ Closing fragment
07-16 19:19 80m - / +3 UB0SMX/P -18 / - 2 ✓ Closing fragment
07-16 19:19 80m +5 / - UB0SMX - / -8 2 Partial capture
07-13 19:19 160m +6 / - R90PNR - / -9 2 Partial capture
07-13 18:32 160m -5 / - RO2E/M - / -17 3 Partial capture
07-13 18:31 160m -9 / - <...> - / -17 3 Partial capture
07-13 17:36 20m -13 / - RG6S - / +4 3 ✓ Closing fragment
07-13 08:06 10m -9 / - RM6OB - / -18 11 ✓ Closing fragment
07-12 17:38 10m -7 / - LB5WB - / -9 2 ✓ Closing fragment
07-12 17:37 10m -10 / - R5VCV - / -17 3 ✓ Closing fragment
07-11 21:02 160m +8 / - RO2E/P - / -14 4 ✓ Closing fragment
07-11 21:01 160m - / - OM2WQ +8 / - 2 Partial capture
07-11 20:55 160m - / - OM2WQ +6 / - 2 Partial capture
07-09 20:06 160m -8 / - RA3TVW - / -16 2 Partial capture
07-09 19:56 160m +15 / - R1AU - / -14 4 ✓ Closing fragment
07-09 19:51 160m - / -16 SQ2PHC -6 / - 3 ✓ Closing fragment
07-08 19:19 160m +12 / - <...> - / -13 2 Partial capture
07-08 19:13 160m -4 / -18 RU5D -7 / -13 3 ✓ Full exchange observed
07-08 19:10 160m +12 / - R9DZ - / -16 2 ✓ Closing fragment
07-08 19:08 160m +13 / - RW4HUD - / -18 2 ✓ Closing fragment
07-08 19:07 160m +12 / - RK1B - / -15 2 ✓ Closing fragment
07-07 19:37 160m +10 / - RN1NFL - / -5 3 Partial capture
07-07 19:33 160m +3 / - UA4HBR - / -14 2 ✓ Closing fragment
07-07 19:32 160m +2 / - UA9CMN - / -12 2 ✓ Closing fragment
07-07 19:22 160m +3 / - <...> - / -8 4 Partial capture
07-07 16:26 10m -2 / - R5VCV - / -18 6 Partial capture
07-06 08:48 20m -11 / - RA6YDX - / +4 2 ✓ Closing fragment
07-06 08:47 20m - / - PD2WL -18 / - 7 Partial capture
07-06 08:47 20m -4 / -5 RK3AW/P -16 / -11 3 ✓ Full exchange observed
07-05 08:53 10m -10 / - R5VCV - / - 2 Partial capture
07-05 08:49 10m -4 / - R5VCV - / - 2 Partial capture
07-05 08:22 10m -3 / - RA3VX - / -25 4 Partial capture
07-05 08:17 10m -12 / - R6LKG - / -9 3 ✓ Closing fragment
07-05 08:14 10m -10 / - DL9KM +3 / - 5 ✓ Closing observed
07-05 08:11 10m -8 / - RC6OZ - / -2 6 ✓ Closing fragment
07-02 18:05 160m -10 / - <...> - / -21 17 Partial capture
07-02 17:48 40m -8 / - UA8L/M - / -15 3 Partial capture
07-01 19:10 80m -8 / - RA6ZA - / -6 6 ✓ Closing fragment
06-30 16:11 20m -6 / -2 R6ZB -12 / -16 3 ✓ Full exchange observed
06-29 12:39 10m -10 / - RD6OX -3 / +7 3 ✓ Closing observed
06-29 11:26 10m -8 / - R4FZ - / -17 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

10m 
UTC    dB Audio  Message
074330 -23 1904  R6ZI RZ3DX KO85 (x2)
074545 -16 1820  RZ3DX R6ZI R-03
074600 -15 1193  R6ZI RZ3DX RR73 (x2)
074645  +0 2812  RZ3DX R2EC KO82 (x2)
094100  -6  632  R4RY RZ3DX -08 (x2)
094215 -19 1323  RZ3DX RL1B +05 (x2)
094430  -4  642  PD0HLA RZ3DX R-06
094615 -12  746  RZ3DX OH3OJ +03
165800 -15 2402  RL6ZZ RZ3DX KO85
080430  -4 2559  RW4HUD RZ3DX KO85
160m 
UTC    dB Audio  Message
210315  +8  709  RO2E/P RZ3DX -14 (x2)
211645 +15  709  <...> RZ3DX +01
211715 +16  709  <R2UZ/1> RZ3DX R+02
211730  -9 1538  RZ3DX RR73; R7CD <...> -08
183115  -9 2405  <...> RZ3DX -17 (x3)
183245 -10 2405  <RO2E/M> RZ3DX -17 (x3)
191900  +5 2405  R90PNR RZ3DX -09 (x2)
190700 -12  702  R1TAX RZ3DX -02 (x2)
40m 
UTC    dB Audio  Message
174945  -9 2673  UA8L/M RZ3DX KO85 (x2)
152615 -16 2171  T22TT RZ3DX 73
175530  -8  545  R3IAD RZ3DX -13
022445 -10  671  <...> RZ3DX KO85
022545 -18 2168  RK3DWA/3 RZ3DX KO85 (x2)
022945 -12  914  PQ1I RZ3DX 73
023045 -15  914  <...> RZ3DX KO85 (x6)
154430 -18 1800  R0UAR/P RZ3DX KO85
20m 
UTC    dB Audio  Message
084730  -8  392  RK3AW/P RZ3DX RR73
084745 -24 1328  RZ3DX PD2WL JO22
084800 -11  391  RA6YDX RZ3DX R+04
084815 -17 1329  RZ3DX PD2WL JO22
084830 -11  392  RA6YDX RZ3DX 73
084845 -17 1328  RZ3DX PD2WL JO22 (x5)
173400  -8 2602  RG6S RZ3DX KO85 (x4)
143445 -13 2591  <...> RZ3DX KO85
80m 
UTC    dB Audio  Message
170445 -11 1814  RA4P/P RZ3DX -15 (x2)
191015  -6  494  RA6ZA RZ3DX KO85 (x6)
185745 -24 1102  <...> RZ3DX -04
185815 -24 1102  <RO2E/M> RZ3DX R-08
185830 -16 2667  RZ3DX RR73; RK4FH <...> +06
191900  +2  898  UB0SMX RZ3DX -08 (x2)
191945 -22  654  RZ3DX UB0SMX/P R+03 (x2)

Decoder S/N history by band

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