RD4HD — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Locator transmitted in a decoded message: LO53

Receiver-side FT8 activity involving RD4HD, decoded by SO8OO in southeastern Poland. 56 related FT8 messages, observed on 80m, 40m, 20m, 10m, across 11 UTC dates. Heard between 2026-05-25 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

Related messages

CQ messages

UTC dates heard

-5 dB

Mean decoder S/N

Bands

80m 20m 40m 10m

First seen: 2026-05-25
Last seen: 2026-08-21 23:59 UTC

Frequent QSO partners observed at SO8OO

Stations RD4HD worked most often, as logged from our receiver:

OA4DOS · Peru UF6VX · European Russia RZ6ASO · European Russia RC7LX · European Russia RA0SCA · Asiatic Russia UA4AEU · European Russia RA3MT · European Russia D2IM · Angola R8LCA · Asiatic Russia UA3WG · European Russia HG8LXL · Hungary RU3DNN · European Russia

Activity Heatmap

Locator transmitted by RD4HD

Approximate centre of LO53, decoded 2026-08-22 02:02 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	RD4HD S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-22 01:58	20m	-17 / -9	D2IM	-16 / -	3	✓ Closing observed
08-21 22:02	80m	-14 / -	TF3VS	- / -	4	Partial capture
08-10 06:52	10m	- / 0	R5KH	-16 / -	3	✓ Closing fragment
08-10 06:48	10m	- / +5	UA3WG	-7 / -	2	✓ Closing fragment
08-08 04:19	20m	-11 / -	R8LCA	- / -10	2	✓ Closing fragment
08-08 04:13	20m	0 / -	OA4DOS	- / -13	7	✓ Closing fragment
06-22 19:14	20m	-7 / -	F4HSB	-21 / -	2	✓ Closing observed
06-19 02:07	20m	- / -18	7Q5MP	-12 / -	3	Partial capture
06-18 23:25	80m	-12 / -6	HG8LXL	+5 / 0	6	✓ Full exchange observed
06-18 23:23	80m	-13 / +6	UA4FKT	+5 / -	9	✓ Full exchange observed
06-18 23:21	80m	-14 / +3	CR7BRV	-2 / -14	6	✓ Full exchange observed
06-10 07:28	10m	-12 / -	5H1KB	- / -	2	Partial capture
06-10 07:02	10m	-16 / -	5H1KB	- / -	2	Partial capture
06-09 16:22	10m	-8 / -	5H1KB	- / -	9	Partial capture
06-09 16:15	10m	-20 / -	5H1KB	- / -	8	Partial capture
06-09 07:13	10m	-14 / -4	R6LKG	-7 / +2	6	Partial capture
06-09 07:12	10m	-14 / -	UA4AEU	- / -5	2	✓ Closing fragment
06-09 06:42	10m	-4 / -9	RZ6ASO	+8 / -13	5	✓ Full exchange observed
06-09 06:41	10m	-4 / +3	UA4AGU	-2 / -	5	✓ Full exchange observed
06-09 06:39	10m	- / -	PA2RO	+2 / -	2	Partial capture
06-09 06:38	10m	- / -16	A41ZZ	-2 / -	2	Partial capture
06-09 06:37	10m	- / -5	RC7LX	-8 / -	2	✓ Closing fragment
06-09 06:36	10m	-10 / +8	RD4A	-14 / -12	4	✓ Full exchange observed
06-09 06:22	10m	-12 / -	RD4A	- / -	3	Partial capture
06-06 11:41	10m	-5 / -	RA3MT	- / -12	3	✓ Closing fragment
06-06 11:38	10m	-3 / -	RU3DNN	- / -3	3	✓ Closing fragment
06-05 11:33	10m	- / +1	F5RAV	-11 / -	4	✓ Closing fragment
06-05 11:30	10m	- / -	RL3T	0 / -	2	✓ Closing fragment
06-02 14:02	10m	- / -10	UA6HI	-18 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
191415 -21 1650  RD4HD F4HSB JN37
191500  -7 1648  F4HSB RD4HD RR73
041345  +1  414  OA4DOS RD4HD LO53 (x7)
041915 -10 2072  R8LCA RD4HD RR73 (x2)
015815 -17 2578  D2IM RD4HD LO53
015830 -16 2134  RD4HD D2IM -09 (x2)
020245 -23 1249  5N0YEN RD4HD LO53

80m

UTC    dB Audio  Message
232515  +2 1003  RD4HD UA4FKT R+06
232530 -12 1335  UA4FKT RD4HD RR73
232545  +3 1003  RD4HD UA4FKT 73
232545  +9 2405  RD4HD HG8LXL KN06 (x2)
232630 -12 1335  HG8LXL RD4HD +00
232645  +5 2405  RD4HD HG8LXL R-06
232700 -11 2405  HG8LXL RD4HD RR73
232715  +6 2405  RD4HD HG8LXL 73
220200 -13 2210  TF3VS RD4HD LO53 (x4)
220345 -14  660  RD4HD RA0SCA OO06
220900 -14  658  RA0SCA RD4HD RR73

10m

UTC    dB Audio  Message
162545  -8  851  5H1KB RD4HD LO53 (x8)
064845 -10 2451  RD4HD UA3WG +05 (x2)
064945 -17 2138  RD4HD R2EA -15
065215 -15 1950  RD4HD R5KH KO91 (x3)
065445 -24 1903  RD4HD RA7T -11

40m

UTC    dB Audio  Message
192745 -16 1907  RD4HD UF6VX RR73

Decoder S/N history by band

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