RK4FD — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Locator transmitted in a decoded message: LO22

Receiver-side FT8 activity involving RK4FD, decoded by SO8OO in southeastern Poland. 396 related FT8 messages, 10 CQ messages, observed on 160m, 80m, 40m, 20m, 10m, across 49 UTC dates. Heard between 2026-05-25 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

396

Related messages

CQ messages

UTC dates heard

-8 dB

Mean decoder S/N

Bands

80m 20m 40m 10m 160m

First seen: 2026-05-25
Last seen: 2026-08-23 17:52 UTC

Frequent QSO partners observed at SO8OO

Stations RK4FD worked most often, as logged from our receiver:

R95WTA · European Russia ×4 RV3SBS/P · European Russia ×3 R70OBN · European Russia ×3 R8CKD · Asiatic Russia ×3 UA9ZZ · Asiatic Russia ×3 RT2P · European Russia ×3 R4SCQ · European Russia ×2 RA6LHU · European Russia ×2 R6OIZ · European Russia ×2 RT7B · European Russia ×2 RA3TVW · European Russia ×2 RD6OW · European Russia ×2

Activity Heatmap

Locator transmitted by RK4FD

Approximate centre of LO22, decoded 2026-08-23 20:00 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	RK4FD S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-23 19:57	40m	-2 / -	R1BKC	- / -	7	Partial capture
08-23 19:51	40m	0 / -	R3BIS	-13 / -9	3	✓ Closing observed
08-23 19:44	40m	-3 / -	RZ9SP	- / -15	8	✓ Closing fragment
08-23 19:40	40m	-3 / -	RZ9SP	- / -	2	Partial capture
08-23 19:27	40m	-6 / -	RU3XK	- / -	2	Partial capture
08-22 18:27	160m	+4 / -	<...>	- / -17	2	Partial capture
08-22 17:54	80m	0 / -	RA4HPQ	- / -3	6	✓ Closing fragment
08-21 21:26	80m	- / -	F5NNN	-12 / -	6	Partial capture
08-21 21:24	80m	0 / -	UA1ABJ	-17 / -	3	✓ Closing observed
08-21 21:17	80m	+11 / -	R3DQK	- / -7	4	✓ Closing fragment
08-21 19:41	80m	+3 / -	UA3IDQ	- / -	18	Partial capture
08-21 19:34	80m	+5 / -	UA3IDQ	- / -	7	Partial capture
08-21 18:28	80m	+3 / -	UF4S/P	- / -2	5	✓ Closing fragment
08-21 18:23	80m	-5 / -	UF4S/P	- / -2	2	Partial capture
08-21 18:11	80m	- / -4	UA3XDR	-16 / -	2	✓ Closing fragment
08-21 18:05	80m	+8 / -	UA3XDR	- / -	2	Partial capture
08-21 17:41	80m	+7 / -	RD9M/3	- / -	10	Partial capture
08-21 08:32	10m	- / -	II7MGXX	+6 / -	2	Partial capture
08-20 18:38	80m	+4 / +1	R6DZJ	-18 / -2	5	✓ Full exchange observed
08-20 16:44	20m	+11 / -	RU5A/M	- / -	5	Partial capture
08-20 16:39	20m	+13 / -	<...>	- / -	10	Partial capture
08-20 14:40	20m	+6 / -	R3DFE/M	- / -15	8	Partial capture
08-20 14:39	20m	+5 / -	<...>	- / -	2	Partial capture
08-20 14:28	20m	+5 / -	CT1END/P	- / -15	4	Partial capture
08-19 19:41	80m	+3 / -	RC3LD	- / -	6	Partial capture
08-17 12:44	10m	-5 / -	<...>	- / -24	10	Partial capture
08-16 19:05	160m	+6 / -	RW3BK	- / -	9	Partial capture
08-16 17:10	40m	-13 / -	UA6XDA	- / -	2	Partial capture
08-14 19:05	160m	+4 / -	RA5AK	- / -14	5	✓ Closing fragment
08-14 18:22	80m	-1 / -	R6DOB/7	- / -4	6	Partial capture
08-14 08:19	20m	0 / -	UA4P	- / -	10	Partial capture
08-14 07:58	20m	+11 / -	RZ3EM	- / -	10	Partial capture
08-14 07:14	20m	-3 / -	R6OCU	- / -3	3	✓ Closing fragment
08-14 07:05	20m	-3 / -	R6OCU	- / -	9	Partial capture
08-14 06:25	20m	-1 / -	RY6LAL	- / -	9	Partial capture
08-14 05:42	20m	+1 / -	R6ADH	- / -8	3	✓ Closing fragment
08-13 18:51	160m	-12 / -	R2GFD	- / -7	4	✓ Closing fragment
08-13 18:47	160m	-11 / -	RA1AGA	- / -14	2	✓ Closing fragment
08-13 18:03	160m	-8 / 0	RC1TF	-15 / -9	4	✓ Full exchange observed
08-12 20:34	160m	+2 / -4	R1MA	-16 / +5	5	✓ Full exchange observed
08-12 20:32	80m	+6 / +4	UA3ROJ	-1 / +8	5	✓ Full exchange observed
08-12 20:28	80m	+2 / -7	JA5MHD	-23 / -11	7	✓ Full exchange observed
08-12 20:25	80m	+10 / -	RX3DQL	-14 / +5	6	✓ Full exchange observed
08-12 18:58	80m	-1 / -	R8CKD	- / -5	3	✓ Closing fragment
08-12 17:12	80m	-8 / -	RV3SBS/P	- / +9	5	✓ Closing fragment
08-12 17:09	80m	-6 / -	R50RKZ	-17 / -	5	✓ Full exchange observed
08-12 17:02	80m	-9 / -	RI0FA	- / -10	3	✓ Closing fragment
08-12 16:59	80m	-8 / -	RO0FA	- / -	6	Partial capture
08-12 09:24	10m	-2 / -	R9MDA	- / -	4	Partial capture
08-12 07:21	10m	-12 / -	RY6O	- / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
194745  -7 1070  RZ9SP RK4FD -15 (x5)
195130  +0 1070  R3BIS RK4FD LO22 (x2)
195215 -13 1174  RK4FD R3BIS RR73
195745  +0 1070  R1BKC RK4FD LO22 (x7)

160m

UTC    dB Audio  Message
190615  +3  792  RA5AK RK4FD LO22 (x4)
190530  +5  778  RW3BK RK4FD LO22 (x9)
182745  +7  974  <...> RK4FD LO22 (x2)

80m

UTC    dB Audio  Message
212545 -19 1776  RK4FD UA1ABJ RRR (x2)
212615 -12 1260  RK4FD F5NNN IN94 (x6)
175415  +0  979  RA4HPQ RK4FD LO22 (x5)
175645 -21 1674  RK4FD UF4S/P -14
175700  +0  980  RA4HPQ RK4FD R-06

10m

UTC    dB Audio  Message
101845 -17 1246  RI0FA RK4FD LO22
102400 -22 1492  RK4FD RW3VA LO06
124445  -4 1209  <...> RK4FD LO22 (x11)
083200  +7 1252  RK4FD II7MGXX +12 (x2)

20m

UTC    dB Audio  Message
163945 +12  798  <...> RK4FD LO22 (x10)
164445 +10 1001  RU5A/M RK4FD LO22 (x5)

Decoder S/N history by band

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