PD4RJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Netherlands Locator transmitted in a decoded message: JO33

Receiver-side FT8 activity involving PD4RJ, decoded by SO8OO in southeastern Poland. 18,813 related FT8 messages, 13,755 CQ messages, observed on 80m, 60m, 40m, 20m, across 89 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

18,813

Related messages

13,755

CQ messages

UTC dates heard

-13 dB

Mean decoder S/N

Bands

80m 20m 60m 40m

First seen: 2026-05-25
Last seen: 2026-08-23 20:01 UTC

Frequent QSO partners observed at SO8OO

Stations PD4RJ worked most often, as logged from our receiver:

IQ2UL · Italy ×3 IK4LZH · Italy ×3 LZ3CB · Bulgaria ×3 YO6PNM · Romania ×3 IQ0VT · Italy ×3 UN7EAX · Kazakhstan ×2 S58MU · Slovenia ×2 DL5KMR · Fed. Rep. of Germany ×2 DF3MC · Fed. Rep. of Germany ×2 SP9NSQ · Poland ×2 UA3ZUX · European Russia ×2 RT6DU · European Russia ×2

Activity Heatmap

Locator transmitted by PD4RJ

Approximate centre of JO33, decoded 2026-08-23 20:22 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	PD4RJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-23 19:55	20m	-12 / -	EA5JPM	-10 / -13	6	Partial capture
08-23 19:48	20m	-10 / -8	M7KSV	-6 / -7	5	✓ Full exchange observed
08-23 19:37	20m	- / -7	EA3CFV	-8 / -	4	✓ Closing fragment
08-23 19:34	20m	-12 / -1	EA7FMT	-11 / +2	4	✓ Full exchange observed
08-23 18:41	20m	- / -16	BG7BVI	-14 / -	2	✓ Closing fragment
08-23 18:19	20m	-10 / -15	UR4UUA	-11 / -11	4	✓ Full exchange observed
08-23 17:53	20m	- / -14	RN3YN	-8 / -	3	✓ Closing fragment
08-23 17:46	20m	- / -10	UN7EAX	+5 / -	10	✓ Closing fragment
08-23 16:38	20m	- / -14	IU2LZV	-2 / -	2	Partial capture
08-23 15:52	20m	- / -1	ON3MCA	-13 / -	3	✓ Closing fragment
08-23 15:47	20m	-16 / -5	OZ5YN	-9 / -6	6	✓ Full exchange observed
08-23 14:54	20m	-12 / +3	IZ4AIF	-3 / -8	5	✓ Full exchange observed
08-23 14:47	20m	-10 / -	US5LD	- / -17	2	Partial capture
08-23 14:29	20m	-19 / -	G7LHK	-8 / -	2	Partial capture
08-23 14:27	20m	- / -16	OE5ABL	-6 / -	2	✓ Closing fragment
08-23 13:55	20m	-24 / -	EA3JAQ	-24 / -	2	✓ Closing observed
08-23 13:47	20m	- / -22	EA2EED	-10 / -	7	Partial capture
08-23 13:44	20m	- / -11	DD1MI	-10 / -	3	✓ Closing fragment
08-23 13:23	20m	- / -	ON1AJ	+2 / -	4	Partial capture
08-23 12:58	20m	- / -	ON1AJ	-4 / -	5	Partial capture
08-23 12:52	20m	-8 / -9	IK2UIG	-15 / -1	4	✓ Full exchange observed
08-23 12:36	20m	- / -	M9THU	-8 / -	2	Partial capture
08-23 12:18	20m	- / -16	OE5WRO	-9 / -	5	✓ Closing fragment
08-23 12:14	20m	- / -	ON1AJ	+11 / -	5	Partial capture
08-23 12:03	20m	-12 / -	ER3GM	- / -	3	Partial capture
08-23 11:51	20m	- / -	ON1AJ	0 / -	5	Partial capture
08-23 10:10	20m	-24 / -6	IS0LYN	-14 / -6	4	✓ Full exchange observed
08-23 09:37	20m	-17 / -	KJ1R	- / -14	3	Partial capture
08-23 08:50	20m	- / -7	UT7UJ	0 / -	2	✓ Closing fragment
08-23 07:12	20m	-11 / -8	LZ3CB	+14 / -	4	✓ Closing observed
08-23 03:17	40m	- / -5	F1PBZ	+2 / -	2	Partial capture
08-23 00:19	40m	- / -19	WO2T	-4 / -	2	Partial capture
08-22 23:22	40m	-4 / -11	EI4JFB	0 / +1	4	Partial capture
08-22 22:31	40m	- / -8	IU3WOZ	-11 / -	4	Partial capture
08-22 22:28	40m	- / -7	F1PBZ	-2 / -	2	Partial capture
08-22 22:18	40m	- / -	RD3FY	+2 / -	3	Partial capture
08-22 22:18	40m	-15 / -9	IN3IZQ	-12 / -	9	✓ Closing observed
08-22 22:02	40m	- / -6	LZ3CB	+1 / -	3	✓ Closing fragment
08-22 21:38	20m	-11 / -	W4YGM	- / -12	4	Partial capture
08-22 20:45	20m	-14 / -18	WY5I	+6 / -8	9	✓ Full exchange observed
08-22 20:44	20m	- / -	OE5FIL	-6 / -	2	Partial capture
08-22 20:23	20m	-16 / -16	G0BAZ	-17 / -	6	✓ Closing observed
08-22 20:12	20m	- / -	M0SWP	-15 / -	2	Partial capture
08-22 17:49	20m	- / -11	G8IMP	-6 / -	5	✓ Closing fragment
08-22 17:33	20m	- / -	M9NTS	-8 / -	2	✓ Closing fragment
08-22 16:53	20m	-14 / -10	EB5CUZ	-14 / +1	5	✓ Full exchange observed
08-22 16:12	20m	-17 / -	EA4GG	- / -9	2	Partial capture
08-22 16:07	20m	- / -7	R6HD	-11 / -	3	✓ Closing fragment
08-22 14:40	20m	-12 / -	M7EOI	- / -11	4	✓ Closing fragment
08-22 14:30	20m	-10 / -	G7LFC	- / -12	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
200945  -6 1425  M7YFC PD4RJ -14
201245 -17 1426  2E0UMF PD4RJ R-15
201315  -9 1426  CQ PD4RJ JO33 (x12)
220130 -21 1985  PD4RJ KB2M -12

40m

UTC    dB Audio  Message
011545 -15 1395  CQ PD4RJ JO33 (x5)
031700  +6 2686  PD4RJ F1PBZ -05 (x2)
032115 -18 1395  CQ PD4RJ JO33 (x8)

80m

UTC    dB Audio  Message
232345  +3 1626  PD4RJ DH1PS JO31 (x15)

60m

UTC    dB Audio  Message
015430 -21 1370  PD4RJ ON8FAB 73

Decoder S/N history by band

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