RZ4AT — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Locator transmitted in a decoded message: LN28

Receiver-side FT8 activity involving RZ4AT, decoded by SO8OO in southeastern Poland. 643 related FT8 messages, 284 CQ messages, observed on 80m, 40m, 20m, 10m, across 20 UTC dates. Heard between 2026-05-26 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

643

Related messages

284

CQ messages

UTC dates heard

-10 dB

Mean decoder S/N

Bands

80m 20m 40m 10m

First seen: 2026-05-26
Last seen: 2026-08-23 09:28 UTC

Frequent QSO partners observed at SO8OO

Stations RZ4AT worked most often, as logged from our receiver:

UI5A · European Russia ×2 R4ADD · European Russia ×2 R9CS/P · European Russia ×2 LA2JKA · Norway ×2 R1TET · European Russia ×2 R8QA · Asiatic Russia ×2 R6DOP · European Russia ×2 IK4LZH · Italy ×2 R2EA/P · European Russia ×2 RM5F · European Russia ×2 UA4NCX · European Russia RU3DBT · European Russia

Activity Heatmap

Locator transmitted by RZ4AT

Approximate centre of LN28, decoded 2026-08-23 16:20 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	RZ4AT S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-23 16:15	20m	-11 / -	UA0LQE	- / -	10	Partial capture
08-23 11:54	20m	-8 / -	UA0LHS	- / -5	4	✓ Closing fragment
08-23 11:30	20m	-12 / -	UA0JBY	- / -	3	Partial capture
08-23 11:27	20m	-16 / -9	R9JE	-14 / -7	4	✓ Full exchange observed
08-23 11:09	20m	-22 / -	<...>	- / +5	3	Partial capture
08-22 12:59	20m	0 / -	RD0L	- / -8	5	✓ Closing fragment
08-22 12:56	20m	-2 / -	R6DOB/M	- / -	2	Partial capture
08-21 20:52	40m	-8 / -	JA5MHD	- / -	2	Partial capture
08-21 20:47	40m	-10 / -	UN7PPV	- / -11	2	✓ Closing fragment
08-21 20:35	80m	- / -	DO7RMS	-2 / -	2	Partial capture
08-21 20:31	80m	0 / -8	R2EA/P	-8 / -5	5	✓ Full exchange observed
08-21 20:28	80m	-7 / -	JA5XAE	- / -22	5	✓ Closing fragment
08-21 20:26	80m	-11 / +3	RV4AS	+2 / +2	4	✓ Full exchange observed
08-21 20:25	80m	-8 / -	JA9APS	- / -21	3	✓ Closing fragment
08-21 20:10	80m	-7 / -	JH0NOS	- / -16	4	✓ Closing fragment
08-21 20:06	80m	-6 / -	JH0NOS	- / -	2	Partial capture
08-21 20:03	80m	-2 / 0	RU9W	-13 / -3	5	✓ Full exchange observed
08-21 20:02	80m	-3 / -10	EA2DDE	-1 / -	4	✓ Closing observed
08-21 19:59	80m	-1 / -	JA4LXY	- / -16	4	✓ Closing fragment
08-21 19:57	80m	-1 / -9	RA9FDR	-18 / -9	5	✓ Full exchange observed
08-21 19:54	80m	-3 / -	JF1FSR	- / -17	3	✓ Closing fragment
08-21 19:52	80m	-4 / -3	RK3ZB	0 / -3	5	✓ Full exchange observed
08-21 19:50	80m	-3 / +1	RY3F	+6 / -3	5	✓ Full exchange observed
08-21 19:50	80m	- / -	F5NNN	-12 / -	5	Partial capture
08-21 19:49	80m	-6 / -17	DM5KM	+18 / -4	5	✓ Full exchange observed
08-21 19:48	80m	-8 / -	YO4LUP	- / -15	2	✓ Closing fragment
08-21 19:44	80m	- / -	YO4LUP	-10 / -	2	Partial capture
08-21 19:42	80m	-8 / -	UF4S/P	- / +1	5	✓ Closing fragment
08-14 20:47	80m	+3 / -	RA1AUS/P	- / -25	4	✓ Closing fragment
08-14 20:42	80m	- / -19	F5RRS	0 / -	2	Partial capture
08-14 20:42	80m	+1 / -	R4NBV	- / -3	2	✓ Closing fragment
08-14 20:39	80m	+6 / -1	LB5WB	+12 / -14	4	✓ Full exchange observed
08-14 20:38	80m	+12 / -	JE6WOQ	- / -8	2	Partial capture
08-14 20:29	80m	+4 / +10	R50RKZ	+2 / -	4	✓ Closing observed
08-14 20:13	80m	-11 / -	R3WDW/P	- / -	3	Partial capture
08-14 08:29	20m	-13 / -3	<...>	-7 / -	5	Partial capture
08-13 20:46	80m	+1 / -6	R6OQ	-8 / 0	5	✓ Closing observed
08-13 20:38	80m	-2 / -3	EU1EU	-6 / -8	4	✓ Full exchange observed
08-13 20:36	80m	-2 / -3	RA3TOS	-16 / -12	5	✓ Full exchange observed
08-13 20:34	80m	-7 / -	RN3YN	- / -13	3	✓ Closing fragment
08-13 20:29	40m	-11 / -	R4FV	- / -11	2	Partial capture
08-13 20:26	40m	-12 / -	BA7IWL	- / -20	2	✓ Closing fragment
08-13 20:24	40m	-12 / -	R5AV	- / +2	2	Partial capture
08-13 20:22	40m	-15 / -	BH4GWF	- / -21	3	Partial capture
08-13 20:21	40m	-15 / -6	EW4DX	-2 / -3	6	✓ Full exchange observed
08-13 20:19	40m	-14 / -	JG3LGD	- / -	2	Partial capture
08-13 20:12	40m	-17 / -	R1BQW/M	- / -6	3	Partial capture
08-13 20:11	40m	-13 / -	R6DZR	-11 / -	2	✓ Closing observed
07-30 19:25	80m	+5 / 0	RA3GZ	0 / -2	5	✓ Full exchange observed
07-30 19:22	80m	-5 / +7	UB3DRL	+9 / -2	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
113345 -10 1683  UA0JBY RZ4AT 73
115430 -12 1683  UA0LHS RZ4AT LN28 (x4)
161545 -13 2515  UA0LQE RZ4AT LN28 (x10)

40m

UTC    dB Audio  Message
202700 -11 2344  BA7IWL RZ4AT RR73
202900 -11 2343  R4FV RZ4AT -11 (x2)
203100 -17 2199  UA7XA RZ4AT LN28
203130 -11 2199  RN6MA RZ4AT LN28
204600  -8 2174  JG4NNS RZ4AT LN28
204700 -14 2174  CQ JA RZ4AT LN28
204730 -10 2174  UN7PPV RZ4AT R-11 (x2)
204830 -10 2174  CQ JA RZ4AT LN28 (x4)
205200  -9 2174  JA5MHD RZ4AT LN28 (x2)

80m

UTC    dB Audio  Message
202715 -14 1703  RV4AS RZ4AT R+02 (x2)
202815  -9 1703  JA5XAE RZ4AT LN28 (x5)
203100  +2 1704  R2EA/P RZ4AT LN28
203115  -6 2554  RZ4AT R2EA/P -08
203130  +1 1704  R2EA/P RZ4AT R-05
203145  -9 2555  RZ4AT R2EA/P RR73
203200  -2 1703  R2EA/P RZ4AT 73
203415  -7 1703  JI4JKO RZ4AT 73
203500  -2 1058  RZ4AT DO7RMS JO71 (x2)

10m

UTC    dB Audio  Message
145400 -14 1742  RZ4AT UA4FKT R-20 (x2)
145700 -11 1249  RZ4AT RA5AK -12 (x2)
150315 -22 1742  UA6BRD RZ4AT LN28
093715  +0 2789  RZ4AT RT6Z -08
110545 -10 2585  RZ4AT IQ4JO -11 (x2)
110915 -15 2107  RZ4AT R7DX KN84 (x2)
114215  -9 1926  RZ4AT LZ4VR KN13 (x3)
115845  -2 2081  RZ4AT R6DOP R-03 (x2)

Decoder S/N history by band

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