RZ3DC — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving RZ3DC, decoded by SO8OO in southeastern Poland. 149 related FT8 messages, 7 CQ messages, observed on 20m, 10m, across 30 UTC dates. Heard between 2026-04-21 and 2026-07-15.

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

149

Related messages

CQ messages

UTC dates heard

-2 dB

Mean decoder S/N

Bands

20m 10m

First seen: 2026-04-21
Last seen: 2026-07-15 07:07 UTC

Frequent QSO partners observed at SO8OO

Stations RZ3DC worked most often, as logged from our receiver:

RI0SP · European Russia ×4 UB6OCD · European Russia ×2 UE7DR · European Russia ×2 RL7Z · European Russia R6ZGS · European Russia RA6OF · European Russia R6OU · European Russia R6ZEJ · European Russia R6ZW · European Russia UA3ZQN · European Russia EW4DX · Belarus R4FV · European Russia

Activity Heatmap

Locator transmitted by RZ3DC

Approximate centre of KO85, decoded 2026-06-11 05:42 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 UTC	Band	RZ3DC S/N	Counterpart	Counterpart S/N	Msgs	Capture
07-15 09:07	10m	- / +2	R6OIW	-16 / -	2	✓ Closing fragment
06-10 07:46	10m	-12 / -	R6OQ	- / +9	4	✓ Closing fragment
06-10 07:40	10m	-7 / -	<...>	- / +8	5	Partial capture
06-10 07:38	10m	-16 / -	RL7Z	- / -	4	✓ Closing fragment
06-10 05:34	20m	-16 / -	UE7DR	-11 / -	2	✓ Closing observed
06-10 04:45	20m	-11 / -	UE7DR	- / -	3	✓ Closing fragment
06-09 11:43	10m	-12 / -	UB8SBV	- / -	5	✓ Closing fragment
06-09 11:09	10m	- / -1	R6OF	+1 / -	11	Partial capture
06-09 10:43	10m	-16 / -6	R6ZW	0 / -12	8	✓ Full exchange observed
06-09 10:02	10m	-15 / -	RU6L/P	- / -	2	Partial capture
06-08 08:21	10m	- / +3	UB6OBY	+6 / -	2	✓ Closing fragment
06-08 07:46	10m	- / -5	RD6OW	+10 / -	2	✓ Closing fragment
06-07 13:48	10m	-11 / -	RW4F	- / -9	2	✓ Closing fragment
06-07 09:20	20m	- / -	UB6HRH/P	-6 / -	2	✓ Closing fragment
06-06 12:37	10m	-21 / -4	RG4D	+4 / -	3	✓ Closing observed
06-06 11:58	10m	- / -1	R6ZEJ	+9 / -	2	✓ Closing fragment
06-06 11:43	10m	- / +8	R6OU	+4 / -	2	✓ Closing fragment
06-06 11:38	10m	- / -11	RZ4FWA	-8 / -	4	✓ Closing fragment
06-06 11:37	10m	- / +3	UB6OCD	0 / -	2	✓ Closing fragment
06-06 06:18	20m	-7 / -	UB6OCD	+2 / -	5	✓ Closing observed
06-04 08:34	10m	-12 / -	BG0AYW	- / -	9	Partial capture
06-04 08:16	10m	-13 / -13	R4FV	+4 / +3	7	✓ Full exchange observed
06-04 07:18	10m	-13 / +1	R7NO	+15 / -	4	✓ Closing observed
06-04 07:15	10m	-16 / -9	<...>	-12 / -7	5	Partial capture
06-04 06:41	10m	-9 / -	R7RCG	- / +6	2	✓ Closing fragment
06-03 12:09	10m	- / -5	RQ6Z	+10 / -	2	Partial capture
06-03 12:01	10m	- / -4	UA6LZ	-4 / -	2	Partial capture
06-03 11:59	10m	-16 / -	UB6HJZ	- / -	2	✓ Closing fragment
06-03 11:53	10m	-7 / -6	RA7Z	+7 / -	3	✓ Closing observed
06-03 11:43	10m	- / -1	RA6OF	+6 / -	2	✓ Closing fragment
06-03 08:17	10m	- / -7	RA6AR	+11 / -	2	✓ Closing fragment
06-03 08:16	10m	- / -	RV6FN	-5 / -	2	Partial capture
06-03 08:14	10m	- / -	UC7T	-1 / -	2	✓ Closing fragment
06-02 09:57	20m	-16 / -18	RA9CAD	-10 / -	3	✓ Closing observed
06-02 09:54	20m	-15 / -	RI0SP	- / +1	5	✓ Closing fragment
06-02 09:51	20m	-14 / -5	UB6OCD	+4 / -	2	Partial capture
06-02 07:01	20m	-4 / -4	EG53DMM	+16 / -	3	Partial capture
06-02 07:00	20m	-8 / -	<...>	- / -	2	Partial capture
06-01 07:45	20m	-12 / -	RI0SP	-2 / +6	5	✓ Closing observed
05-31 06:21	10m	-6 / -	RC6BB	- / +1	7	✓ Closing fragment
05-31 05:11	20m	- / -11	R6OH	+6 / -	2	✓ Closing fragment
05-28 07:42	20m	-9 / -	RI0SP	- / -9	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
073845 -16 1224  RL7Z RZ3DC KO85 (x3)
074045  -7 2375  <...> RZ3DC KO85 (x5)
074630 -13 1541  R6OQ RZ3DC KO85 (x4)
072615  -9 2524  RZ3DC UA3ZQN RR73
090700 -16 1765  RZ3DC R6OIW +02 (x2)

20m

UTC    dB Audio  Message
061900  -5  647  UB6OCD RZ3DC R+12
061915  +2  648  RZ3DC UB6OCD RR73
061930  -6  647  UB6OCD RZ3DC 73
064045 -12  971  <...> RZ3DC R-04
092045  -4  738  RZ3DC UB6HRH/P RRR (x2)
125445 -14 1620  UA3SCX RZ3DC KO85
042745  +1 2397  RZ3DC RI0SP RR73
044545 -10 2689  UE7DR RZ3DC KO85 (x3)
052315 -10 2013  <...> RZ3DC KO85
053445 -16 2524  UE7DR RZ3DC KO85
053600 -11 2753  RZ3DC UE7DR RR73
054245  -8 2868  <R3DFE/M> RZ3DC KO85

Decoder S/N history by band

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