R4DD — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Locator transmitted in a decoded message: LO11

Receiver-side FT8 activity involving R4DD, decoded by SO8OO in southeastern Poland. 322 related FT8 messages, 106 CQ messages, observed on 160m, 80m, 40m, 20m, 10m, across 27 UTC dates. Heard between 2026-06-03 and 2026-08-22.

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

322

Related messages

106

CQ messages

UTC dates heard

-8 dB

Mean decoder S/N

Bands

80m 20m 40m 10m 160m

First seen: 2026-06-03
Last seen: 2026-08-22 10:28 UTC

Frequent QSO partners observed at SO8OO

Stations R4DD worked most often, as logged from our receiver:

R2EA/P · European Russia ×3 RM5F · European Russia ×2 F1PBZ · France ×2 UB0SMX/P · Asiatic Russia ×2 RA6ZD · European Russia ×2 RW4CB · European Russia ×2 R3UDU · European Russia R3HW/P · European Russia IQ4JO · Italy RZ3DW · European Russia RT2P · European Russia DL1EDR · Fed. Rep. of Germany

Activity Heatmap

Locator transmitted by R4DD

Approximate centre of LO11, decoded 2026-08-19 17:26 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	R4DD S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-22 13:01	20m	-12 / -	RW3TM/MM	- / -9	2	Partial capture
08-20 13:38	20m	+4 / -	R0AIG	- / -5	2	✓ Closing fragment
08-20 13:28	20m	+1 / -	R9FDE/P	- / -6	2	✓ Closing fragment
08-20 13:20	20m	-4 / -	<...>	- / -5	2	Partial capture
08-20 13:17	20m	- / -	R4UA	+5 / -	2	Partial capture
08-19 17:29	80m	-23 / 0	RW4CB	-4 / -	4	✓ Full exchange observed
08-19 09:28	20m	+2 / -	R8QA/M	- / -14	3	Partial capture
08-18 18:20	80m	-1 / -4	UB3LBU	-2 / -	4	✓ Closing observed
08-18 18:19	80m	-6 / +2	RZ3DW	+1 / +1	5	✓ Full exchange observed
08-18 18:10	40m	-16 / -	DL1EDR	-6 / -14	3	✓ Closing observed
08-18 18:09	40m	-18 / -	UA4SN	- / +1	2	✓ Closing fragment
08-18 18:05	40m	-20 / -	R2HB	-18 / -4	3	✓ Closing observed
08-18 17:38	80m	-10 / -	UA3RBM	-8 / +1	4	✓ Full exchange observed
08-18 17:38	80m	-12 / -	R8LCI	- / -2	2	✓ Closing fragment
08-18 17:03	80m	-17 / -	RQ3D	- / -8	2	✓ Closing fragment
08-18 16:59	80m	-12 / -19	YO2CNH	+5 / -11	6	✓ Full exchange observed
08-14 18:51	160m	-12 / -	RO2E/M	- / -10	2	Partial capture
08-14 18:47	160m	-10 / -	R2UZ/P	- / 0	3	✓ Closing fragment
08-14 08:32	20m	-22 / -	HF5MOLO	- / 0	4	Partial capture
08-14 08:04	20m	-5 / -19	RU1QD	-20 / 0	2	Partial capture
08-10 20:19	160m	-16 / -	PA3FR	- / -20	4	Partial capture
08-10 20:08	160m	-14 / -2	UI6L	-6 / +4	4	✓ Full exchange observed
08-10 19:58	160m	-14 / -	UB8CQC/P	- / -19	2	Partial capture
08-10 19:54	160m	-16 / -	R5KH	- / +1	2	✓ Closing fragment
08-10 19:50	160m	-15 / -	R1CBH/P	- / -17	6	✓ Closing fragment
08-10 19:30	160m	- / -2	R5BS	-6 / -	3	✓ Closing fragment
08-10 19:27	160m	- / -13	UA3ZSI	-5 / -	3	✓ Closing fragment
08-10 19:26	160m	- / -5	RD6OX	-2 / -	2	✓ Closing fragment
08-10 19:22	160m	-12 / -3	RT6Z	-5 / -	4	✓ Closing observed
08-10 19:21	160m	-18 / -2	RA3WY	-3 / +2	5	✓ Full exchange observed
08-10 19:12	160m	-18 / -	JF8QNF	- / -13	2	Partial capture
08-10 19:05	160m	-16 / -14	R1MA	-12 / -	4	✓ Closing observed
08-10 19:00	80m	-4 / -	OH3GBW	-17 / -14	4	Partial capture
08-10 18:58	80m	-4 / -	R2ZR	- / -16	2	✓ Closing fragment
08-10 18:56	80m	-4 / -11	R2UC	+8 / -4	4	✓ Full exchange observed
08-10 18:53	80m	-7 / -	RA4ADF	- / -9	2	✓ Closing fragment
08-10 18:51	80m	-9 / 0	R5AV	-1 / +2	4	✓ Full exchange observed
08-10 18:48	80m	-6 / 0	R3DMS	-5 / -2	6	✓ Full exchange observed
08-10 18:48	80m	-6 / -10	R6ZEJ	-7 / +1	7	✓ Full exchange observed
08-10 18:46	80m	-6 / -	R50RKZ	-1 / +2	3	✓ Closing observed
08-10 18:45	80m	-5 / -	R2DYC	-8 / -	2	✓ Closing observed
08-10 18:42	80m	-6 / -	UA4NCX	-21 / -6	3	✓ Closing observed
08-10 18:40	80m	-14 / -1	RA1TR	-7 / -1	9	✓ Full exchange observed
08-10 18:40	80m	-6 / -	RN7B	-11 / -1	3	✓ Closing observed
08-10 18:39	80m	-8 / -	UA9FFV	-11 / -9	5	✓ Closing observed
08-10 18:39	80m	-6 / -14	UB8FDN	-23 / -	3	✓ Closing observed
08-10 18:36	80m	- / -5	R6ZB	-6 / -	2	✓ Closing fragment
08-10 18:36	80m	- / -7	RM5F	0 / -	4	✓ Closing fragment
08-10 18:32	40m	-11 / +2	RA3ZOM	-9 / +2	6	✓ Full exchange observed
08-10 18:21	40m	-11 / -	R3HW/P	-9 / -6	3	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
132045  -5 2312  <...> R4DD -05 (x2)
132300 -10 2959  R4DD RR73; RA9UJ <...> -04
132815  +3 2309  R9FDE/P R4DD -06 (x2)
133845  +5 2307  R0AIG R4DD -05 (x2)
122230  -6 2548  UB0SMX/P R4DD RR73
122430 -11 2547  R9FGJ R4DD -13
122815  -7 2749  R4DD UA9YHA RR73
122930  -9 2545  JH2BUF R4DD RR73
130115  -8 2705  JA8NRS R4DD -09
130145 -10 2706  <RW3TM/MM> R4DD -09 (x3)

80m

UTC    dB Audio  Message
181945  -6 1268  R4DD HA1DUQ JN86
182000  -6 2132  RZ3DW R4DD RR73
182015  +0 2131  R4DD RZ3DW 73
182030 -13 2131  CQ R4DD LO11
182045  -5 1496  R4DD UB3LBU KO63 (x2)
182130  -1 2132  UB3LBU R4DD RR73
182145  -1 1496  R4DD UB3LBU 73
172500 -15 1947  CQ R4DD LO11 (x3)
172915 -24 1947  RW4CB R4DD +16
172930  -8 1150  R4DD RW4CB R+00
172945 -22 1947  RW4CB R4DD RR73
173000  -1 1150  R4DD RW4CB 73

40m

UTC    dB Audio  Message
180530 -20 2157  R2HB R4DD R-04
180545 -18 1151  R4DD R2HB RR73
180630 -19 2157  R2HB R4DD 73
180730 -17 2157  R3UDU R4DD RR73
180830 -17 2157  CQ R4DD LO11
180900 -18 2157  UA4SN R4DD +01 (x2)
181000 -16 2157  DL1EDR R4DD -14 (x2)
181045  -6 2155  R4DD DL1EDR 73
181200 -16 2157  CQ R4DD LO11 (x4)
181400  -5 2157  VJ6X R4DD -12

160m

UTC    dB Audio  Message
200345 -18 1166  CQ R4DD LO11                          a1 (x2)
200845 -13 1166  UI6L R4DD +04
200900  -7 1581  R4DD UI6L R-02
200915 -14 1166  UI6L R4DD RR73
200930  -6 1581  R4DD UI6L 73
201915 -16 1166  PA3FR R4DD -20 (x4)
184715 -10 2487  R2UZ/P R4DD LO11 (x3)
185115 -13 2488  <RO2E/M> R4DD -10 (x2)

10m

UTC    dB Audio  Message
193600  -6 2246  R4DD IQ9BF JM77 (x2)
194100  -1 2669  R4DD IQ4JO JN63 (x3)
191900 -17 2126  PS8PI R4DD -14
192030 -20 2126  CQ R4DD LO11

Decoder S/N history by band

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