RD4HX — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving RD4HX, decoded by SO8OO in southeastern Poland. 639 related FT8 messages, 44 CQ messages, observed on 160m, 80m, 40m, 20m, 10m, across 48 UTC dates. Heard between 2026-05-29 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

639

Related messages

CQ messages

UTC dates heard

-7 dB

Mean decoder S/N

Bands

80m 20m 40m 10m 160m

First seen: 2026-05-29
Last seen: 2026-08-23 02:41 UTC

Frequent QSO partners observed at SO8OO

Stations RD4HX worked most often, as logged from our receiver:

R4FDD · European Russia ×3 RA6FRI · European Russia ×3 F1IQH · France ×3 RC6OD · European Russia ×3 IK4LZH · Italy ×3 HB9EFK · Switzerland ×2 UA6LET · European Russia ×2 R2EA/P · European Russia ×2 R8QA · Asiatic Russia ×2 UA9QFF · Asiatic Russia ×2 RY3F · European Russia ×2 RK0SC · Asiatic Russia ×2

Activity Heatmap

Locator transmitted by RD4HX

Approximate centre of LO53, decoded 2026-08-23 04:39 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	RD4HX S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-23 04:40	20m	0 / -8	RV6F	+9 / -2	6	✓ Full exchange observed
08-23 04:38	20m	-7 / -	IS0KNG	- / -6	3	✓ Closing fragment
08-23 04:36	20m	-5 / -	DG0JK	- / -4	2	✓ Closing fragment
08-23 04:32	20m	0 / -15	RO6G	-4 / -	3	✓ Closing observed
08-23 04:29	20m	-4 / -	RD1A	- / 0	2	✓ Closing fragment
08-23 04:11	20m	-7 / -	RK0SK	- / -7	3	✓ Closing fragment
08-23 04:09	20m	-9 / -	DM2DXA	- / -2	3	✓ Closing fragment
08-23 04:07	20m	+8 / -	A93MO	-12 / 0	4	✓ Closing observed
08-23 04:06	20m	+1 / -	Z35T	- / -	2	Partial capture
08-23 04:04	20m	-11 / -	EX7CQ	- / -15	5	✓ Closing fragment
08-23 04:03	20m	-10 / -	UA0SDX	- / +4	2	Partial capture
08-23 04:01	20m	+3 / -	UA9MA	- / +9	3	✓ Closing fragment
08-23 04:00	20m	-5 / -	UA9JGS	-5 / -	3	✓ Closing observed
08-23 03:57	40m	- / -15	9A60CBM	-20 / -	4	Partial capture
08-23 03:40	40m	- / 0	UA6LET	-10 / -	2	✓ Closing fragment
08-23 03:38	40m	- / -4	RD3FY	-2 / -	2	✓ Closing fragment
08-23 03:22	40m	- / -8	R3RAQ	-18 / -	2	✓ Closing fragment
08-21 08:45	10m	- / 0	RN6MA	+6 / -	2	✓ Closing fragment
08-21 08:35	10m	- / -5	DG2SAT	-5 / -	3	✓ Closing fragment
08-21 08:33	10m	- / +2	IK4LZH	+10 / -	2	✓ Closing fragment
08-21 07:57	20m	- / -25	CT7AUT	-17 / -	3	Partial capture
08-21 07:52	20m	-22 / -	RA3Y	- / -	2	✓ Closing fragment
08-21 06:04	20m	-1 / -	R9CA	- / -5	2	✓ Closing fragment
08-21 04:50	40m	- / -5	RK6MC	-15 / -	2	✓ Closing fragment
08-21 04:21	40m	- / -11	R1CF	-19 / -	2	✓ Closing fragment
08-21 04:16	40m	- / -19	OJ0JR	-5 / -	5	Partial capture
08-15 05:21	20m	-4 / -5	RX3DPK/LH	-11 / -	2	Partial capture
08-15 01:24	80m	+1 / -21	RN3YN	-10 / -11	16	Partial capture
08-15 01:20	80m	+4 / +4	R4FDD	0 / -	4	✓ Full exchange observed
08-14 18:35	80m	-10 / -4	R2DP	-5 / -12	6	✓ Full exchange observed
08-14 18:34	80m	-6 / -	R9FDM	- / -8	3	✓ Closing fragment
08-14 18:27	80m	- / -1	UA9FFV	+1 / -	2	✓ Closing fragment
08-14 18:21	80m	- / -10	R1ZH	-11 / -	3	✓ Closing fragment
08-14 18:17	80m	+2 / +8	RM3TO	-4 / -1	5	✓ Full exchange observed
08-14 18:16	80m	+1 / -6	RA4FHO	-9 / -1	4	✓ Full exchange observed
08-14 18:14	80m	-2 / -4	RU4LM	-8 / -1	4	✓ Full exchange observed
08-07 19:06	20m	-16 / -	CR5VP	- / -12	3	✓ Closing fragment
08-07 19:01	20m	-21 / -	CX6TU	- / -	3	Partial capture
08-07 18:51	20m	-17 / -3	CN8NS	-14 / -16	4	✓ Full exchange observed
08-07 18:48	20m	-4 / -	JO1LVZ	- / -	2	Partial capture
08-06 08:02	20m	- / -	DL8WEM	-16 / -	2	✓ Closing fragment
08-06 07:59	20m	- / -	IK4LZH	+4 / -	3	✓ Closing fragment
08-06 07:52	20m	- / -24	RD7X	-9 / -	2	✓ Closing fragment
08-06 04:25	20m	-20 / -	RA6AVP	- / -	2	✓ Closing fragment
08-06 04:21	20m	-15 / -3	RW9RR	-14 / -12	3	Partial capture
08-06 04:17	20m	- / -	UA4FKT	+3 / -	2	Partial capture
08-06 04:11	20m	-24 / -	N8HRZ	- / -	2	Partial capture
08-06 04:09	20m	-18 / -	HI8UD	-4 / -	3	✓ Closing observed
08-06 04:04	20m	- / -8	HI8UD	-5 / -	3	Partial capture
08-06 03:57	20m	-13 / -	RC0JD	- / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
043600  +0 1917  DG0JK RD4HX -04 (x2)
043700  -8 1917  CQ RD4HX LO53 (x2)
043800  -6 1918  IS0KNG RD4HX R-06 (x3)
043930 -10 1918  CQ RD4HX LO53
044000  -3 1919  F4BYA RD4HX -24
044015  +9 1612  RD4HX RV6F LN14 (x2)
044100  +2  859  RV6F RD4HX -02
044115  +9 1612  RD4HX RV6F R-08
044130  -1  859  RV6F RD4HX RR73
044145 +11 1612  RD4HX RV6F 73

40m

UTC    dB Audio  Message
050045 -12 2540  RD4HX RC6OT RR73
050530 -15  590  RD4HX RW6BT RR73
032245 -19 1681  RD4HX R3RAQ -08 (x2)
032945 -18 2228  <...> RD4HX LO53
033815  -4 2835  RD4HX RD3FY -04 (x2)
034000  -8 1756  RD4HX UA6LET +00 (x2)
034130 -17 1015  RD4HX RX3DCZ -01
034445 -24 1887  R3DOE/P RD4HX R-10
035715 -22 1631  RD4HX 9A60CBM -15 (x4)

10m

UTC    dB Audio  Message
065130 -11 2178  RD4HX RT3K RR73 (x2)
154900 -13  997  RD4HX R2EC R-18 (x2)
163930 -10  516  RD4HX RU3AMO R+00
082630 -12 2561  RD4HX F4LZZ JN09
083215 -16 1774  RD4HX RN6LPC +29
083345 +14  489  RD4HX IK4LZH +02 (x2)
083545 -16  855  RD4HX DG2SAT JN48 (x3)
083745 -10  859  RD4HX F4VTR JN25
084515  +4  926  RD4HX RN6MA +00 (x2)

80m

UTC    dB Audio  Message
012500  -9  604  RD4HX RN3YN -21
012515  +0  605  RN3YN RD4HX R-11
012530  -9  604  RD4HX RN3YN -21
012545  +3  605  RN3YN RD4HX R-11
012600 -10  604  RD4HX RN3YN -21
012615  +2  605  RN3YN RD4HX R-11
012630  -8  604  RD4HX RN3YN -21
012645  +1  605  RN3YN RD4HX R-11
012700 -11  604  RD4HX RN3YN -21
012715  +3  605  RN3YN RD4HX R-11
012730  -7  604  RD4HX RN3YN -21
012745  +0  605  RN3YN RD4HX R-11
012800 -17  604  RD4HX RN3YN -21
012845  +0  605  RN3YN RD4HX R-11 (x2)

160m

UTC    dB Audio  Message
182330 -22 1465  RD4HX RA9AJ RR73 (x2)

Decoder S/N history by band

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