R3ZBY — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving R3ZBY, decoded by SO8OO in southeastern Poland. 740 related FT8 messages, 141 CQ messages, observed on 160m, 80m, 60m, 40m, 20m, 10m, across 19 UTC dates. Heard between 2026-05-23 and 2026-08-21.

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

740

Related messages

141

CQ messages

UTC dates heard

-8 dB

Mean decoder S/N

Bands

80m 20m 40m 60m 10m 160m

First seen: 2026-05-23
Last seen: 2026-08-21 06:04 UTC

Frequent QSO partners observed at SO8OO

Stations R3ZBY worked most often, as logged from our receiver:

RU4I · European Russia ×2 EC5M · Spain ×2 E70SZ · Bosnia-Herzegovina ×2 SV2AEL · Greece ×2 IK4LZH · Italy ×2 RM5F · European Russia ×2 R5BM · European Russia ×2 G6LEE · England ×2 OK2CNI · Czech Republic ×2 TF4M · Iceland G0TIX · England PA2KV · Netherlands

Activity Heatmap

Locator transmitted by R3ZBY

Approximate centre of KO81, decoded 2026-08-11 22:24 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	R3ZBY S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-21 08:04	10m	- / -1	R7RAG	-10 / -	2	✓ Closing fragment
08-12 13:40	20m	-11 / -	OH3DJP	- / -14	3	Partial capture
08-11 22:40	80m	-20 / -	GM4GZW	- / -11	5	Partial capture
08-11 22:37	80m	-11 / -11	HA7TM	+18 / -5	6	✓ Full exchange observed
08-11 22:35	80m	+2 / -	TF4M	-2 / -14	5	✓ Closing observed
08-11 22:34	80m	+4 / -	R3EDI	-1 / +3	5	✓ Full exchange observed
08-11 22:33	80m	+2 / -13	S55P	+8 / -20	5	✓ Full exchange observed
08-11 22:31	80m	+1 / -	DO5UH/P	+10 / -14	4	✓ Closing observed
08-11 22:31	80m	+2 / -	TF4M	- / -10	2	Partial capture
08-11 22:25	20m	-12 / -	HB9HBY	- / -6	2	Partial capture
08-11 22:23	20m	-16 / -	HI9R	- / -15	2	Partial capture
08-11 22:21	20m	-14 / -	ON3KJU	- / -10	2	Partial capture
08-11 22:17	20m	-15 / -	ON3KJU	- / -8	2	Partial capture
08-11 21:58	20m	-12 / -	OK2CNI	+13 / -5	3	✓ Closing observed
08-11 21:55	20m	-13 / +4	OK4SD	-5 / -3	3	✓ Full exchange observed
08-11 21:53	20m	- / +1	PA1PXL	-8 / -	3	✓ Closing fragment
08-11 21:52	20m	-12 / -	UW5KW	- / -1	2	Partial capture
08-11 21:41	20m	-12 / -	UW5KW	- / -4	2	Partial capture
08-11 21:40	20m	-15 / -4	VO1CH	-11 / -	3	✓ Closing observed
08-11 21:36	20m	-15 / -	DL5MKR	- / -8	2	✓ Closing fragment
08-11 21:24	20m	-12 / -	HB9TIH	- / -6	3	Partial capture
08-11 21:23	20m	-12 / -	UA0LQE	- / -16	2	✓ Closing fragment
08-11 21:22	20m	-8 / -	JH0EHQ	- / -	2	✓ Closing fragment
08-11 21:20	20m	-8 / -3	F4EAR	-15 / -	2	✓ Closing observed
08-11 21:17	20m	-12 / -	GM3AND	- / -6	3	Partial capture
08-11 21:15	20m	-12 / -	GM4CXM	- / -3	4	Partial capture
08-11 21:14	20m	-15 / -	TA1MB	-16 / -	2	✓ Closing observed
08-11 21:13	20m	-11 / +5	E74K	-3 / -	3	✓ Closing observed
08-11 21:07	20m	-12 / -5	9A3K	+13 / +1	10	✓ Full exchange observed
08-09 22:16	40m	-20 / -	PA2KV	- / -14	2	✓ Closing fragment
08-09 22:03	40m	-24 / -9	LB7ZG	-6 / -13	4	✓ Full exchange observed
08-09 22:03	40m	- / -7	M0GLT	-2 / -	2	✓ Closing fragment
08-09 21:56	40m	-20 / -	OZ7DR	- / -12	2	Partial capture
08-09 21:54	40m	-17 / -	EA3GAT	- / -11	2	✓ Closing fragment
08-09 21:53	40m	-20 / -	OM1TD	- / -7	2	✓ Closing fragment
08-09 21:52	40m	-15 / -1	DL5MKR	-22 / -11	3	Partial capture
08-09 21:51	40m	-20 / -	SV1MNE	- / -18	2	Partial capture
08-09 21:42	40m	-22 / -	UI6O	-15 / -7	2	✓ Closing observed
08-09 21:32	40m	-14 / -	R3DQK	- / -23	2	Partial capture
08-09 21:27	40m	-16 / -	LA6OP	- / -5	4	✓ Closing fragment
08-09 21:25	40m	-22 / -	LB9ZG	- / -18	2	Partial capture
08-09 21:24	40m	-18 / -	F6BHK	- / -23	3	Partial capture
08-09 20:59	60m	-17 / -	IU6STP	-12 / -16	7	Partial capture
08-09 20:58	60m	-10 / -13	PE1MHY	-8 / -20	4	✓ Full exchange observed
08-09 20:57	60m	-12 / -8	SP6LUT	+2 / -13	4	✓ Full exchange observed
08-09 20:55	60m	-10 / -5	IZ2BQA	-13 / -18	6	✓ Full exchange observed
08-09 20:55	60m	-8 / -6	IT9KHI	-6 / -3	4	✓ Full exchange observed
08-09 20:54	60m	-9 / -	DL3IKE	-5 / -13	3	✓ Closing observed
08-09 20:53	60m	-8 / -14	IK5FKF	-12 / -23	3	✓ Full exchange observed
08-09 20:52	60m	-8 / -22	EH1SGG	-14 / -17	4	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
125415 -16 2302  OE3DXA R3ZBY -12 (x2)
125645 -15 2302  II0WWA R3ZBY -19
125715 -12 2302  CQ R3ZBY KO81 (x2)
125800 -19 1249  R3ZBY II0WWA R-11
125845 -16 2302  SP5UID R3ZBY RR73
125915 -13 2302  OH7FQH R3ZBY -21 (x6)
080400  -6  731  R3ZBY R7RAG R-01 (x2)

20m

UTC    dB Audio  Message
220545 -13 2526  HB9HBY R3ZBY -01
221745 -15 2526  ON3KJU R3ZBY -08 (x2)
221945 -11 2527  HB9HBY R3ZBY -09
222115 -12 2527  ON3KJU R3ZBY -10 (x2)
222345 -18 2527  HI9R R3ZBY -15 (x2)
222445 -16 2526  CQ R3ZBY KO81
222515 -12 2526  HB9HBY R3ZBY -06 (x2)
222745  -9 2526  WA4FL R3ZBY -19
134015 -11 2526  OH3DJP R3ZBY -14 (x3)

80m

UTC    dB Audio  Message
223615  +2 2453  TF4M R3ZBY -18 (x3)
223730  -2 1127  R3ZBY TF4M RR73
223745  +1 2453  HA7TM R3ZBY -05 (x4)
223930 +18 2453  R3ZBY HA7TM R-11
223945 -18 2453  HA7TM R3ZBY RR73
224045 -24 2453  GM4GZW R3ZBY -11 (x5)

40m

UTC    dB Audio  Message
220345 -24 2018  LB7ZG R3ZBY -13
220400  -8  441  R3ZBY LB7ZG R-09
220415 -23 2018  LB7ZG R3ZBY RR73
220430  -4  441  R3ZBY LB7ZG 73
220545 -24 2018  ON3ABR R3ZBY -05
220645 -20 2019  CQ R3ZBY KO81 (x2)
220745 -22 2019  EA8DGI R3ZBY -19
221215 -21 2018  IK4ANJ R3ZBY -20
221315 -18 2019  CQ R3ZBY KO81 (x2)
221645 -19 2018  PA2KV R3ZBY -14 (x2)
221845 -21 2018  CQ R3ZBY KO81                         a1
221945 -16 2019  R3DQK R3ZBY -15

60m

UTC    dB Audio  Message
205815  +4 2160  R3ZBY SP6LUT 73
205830 -12 2013  CQ R3ZBY KO81
205845 -17 1181  R3ZBY DL2VN JO51
205845  -5 1034  R3ZBY PE1MHY -13
205900 -10 2013  PE1MHY R3ZBY R-20
205915 -11 1034  R3ZBY PE1MHY RR73
205930 -10 2013  PE1MHY R3ZBY 73
205945 -12 2014  R3ZBY IU6STP JN63
210030 -17 2013  IU6STP R3ZBY -16
210045  -9 1022  R3ZBY DL9BDR -05
210045 -11 2033  R3ZBY IU6STP JN63
210100 -15 2013  IU6STP R3ZBY -16
210115 -11 2033  R3ZBY IU6STP JN63
210130 -18 2013  IU6STP R3ZBY -15
210215 -13 2033  R3ZBY IU6STP JN63

160m

UTC    dB Audio  Message
195945 -14 1976  R3ZBY R6ZEB R-17

Decoder S/N history by band

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