R2FDU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Kaliningrad Locator transmitted in a decoded message: JO94

Receiver-side FT8 activity involving R2FDU, decoded by SO8OO in southeastern Poland. 2,231 related FT8 messages, 473 CQ messages, observed on 80m, 60m, 40m, 20m, 10m, across 71 UTC dates. Heard between 2026-05-25 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

2,231

Related messages

473

CQ messages

UTC dates heard

-8 dB

Mean decoder S/N

Bands

80m 20m 40m 60m 10m

First seen: 2026-05-25
Last seen: 2026-08-22 21:18 UTC

Frequent QSO partners observed at SO8OO

Stations R2FDU worked most often, as logged from our receiver:

LZ1ZF · Bulgaria ×4 R5AV · European Russia ×4 R2AKN · European Russia ×3 RA4Y · European Russia ×3 IW5ALZ · Italy ×3 RU3T · European Russia ×2 IK4LZH · Italy ×2 SM7DXE · Sweden ×2 RX3VF · European Russia ×2 R3YAU · European Russia ×2 R70OBN · European Russia ×2 RA6OD · European Russia ×2

Activity Heatmap

Locator transmitted by R2FDU

Approximate centre of JO94, decoded 2026-08-22 23:14 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	R2FDU S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-22 23:15	40m	-6 / -	K3SWZ	- / -16	6	✓ Closing fragment
08-22 23:13	40m	-5 / -1	RX3DCZ	0 / -	3	✓ Closing observed
08-22 23:09	40m	-4 / -12	EA5HM	-14 / -16	10	✓ Full exchange observed
08-22 23:09	40m	- / -7	F1PBZ	-1 / -	3	Partial capture
08-22 23:08	40m	-6 / -	SP7NC	-7 / -2	4	✓ Full exchange observed
08-22 23:06	40m	-4 / -	NG2O	- / -19	3	✓ Closing fragment
08-22 23:02	40m	-4 / -	N1SK	- / -16	2	✓ Closing fragment
08-22 23:01	40m	-7 / -	NP4PR	- / -14	4	✓ Closing fragment
08-22 23:00	40m	-3 / -2	SQ1JKB	-4 / -11	4	✓ Full exchange observed
08-22 23:00	40m	- / -	TA3NK	+3 / -	2	Partial capture
08-22 22:58	40m	-6 / -	WA4BRX	- / -24	2	Partial capture
08-22 21:37	80m	+17 / -	UA0TP	- / -20	3	✓ Closing fragment
08-22 21:35	80m	+16 / +1	RY2B	-2 / -7	4	✓ Full exchange observed
08-22 20:52	80m	+14 / 0	R7CD	+2 / -10	4	✓ Full exchange observed
08-22 20:45	80m	+12 / -2	IK0HBN	+7 / -5	7	✓ Full exchange observed
08-22 20:44	80m	+11 / -	SP5GW	+8 / -2	5	✓ Full exchange observed
08-22 20:41	80m	+11 / -	R3PY	- / -12	4	Partial capture
08-22 20:39	80m	+7 / -	RU3T	- / -7	3	✓ Closing fragment
08-22 20:38	80m	+12 / -9	R3PA	-15 / -13	5	✓ Full exchange observed
08-22 20:36	80m	+12 / -3	DK5WO	-15 / -12	5	✓ Full exchange observed
08-22 20:35	80m	+7 / -2	RM3TO	0 / -4	4	✓ Full exchange observed
08-22 20:26	80m	+14 / -	EI4JFB	- / -14	2	✓ Closing fragment
08-22 20:23	80m	+9 / -	R9FDM	- / -19	4	Partial capture
08-22 12:08	20m	- / -	RG6S	-11 / -	2	✓ Closing fragment
08-21 22:33	40m	-18 / -	RV9CD	- / -	2	Partial capture
08-21 22:24	40m	- / -7	SV6JHA	+2 / -	2	✓ Closing fragment
08-21 22:24	40m	-11 / -8	UN7PPV	-18 / -11	4	✓ Full exchange observed
08-21 22:20	40m	-16 / -	R4PFU	- / -21	2	✓ Closing fragment
08-21 22:13	40m	-15 / +3	9A1CCB	0 / -1	9	✓ Full exchange observed
08-21 22:00	40m	-5 / -	EI9KF	- / -15	2	Partial capture
08-21 21:57	40m	-12 / +10	UN7LEW	-14 / -7	4	✓ Full exchange observed
08-21 21:53	40m	-18 / -	IK4LZH	+2 / -11	5	Partial capture
08-21 21:53	40m	-10 / -	5A1AL	- / -16	3	Partial capture
08-21 21:50	40m	- / -3	OE9NET	+4 / -	2	✓ Closing fragment
08-20 21:04	80m	+6 / -2	DO4HHK	-15 / -13	4	✓ Full exchange observed
08-20 21:03	80m	-2 / -	F6GGA	- / -16	2	✓ Closing fragment
08-20 21:02	80m	-3 / -2	DL3RDO	-8 / -4	5	✓ Full exchange observed
08-20 20:55	80m	+7 / -19	R7IA	-14 / -13	6	✓ Full exchange observed
08-20 20:54	80m	+8 / -	E70SZ	- / -1	2	Partial capture
08-20 20:53	80m	+12 / -	R2SD	- / -11	2	✓ Closing fragment
08-20 20:51	80m	+8 / -1	TC3CT	+1 / -12	4	✓ Full exchange observed
08-20 20:48	80m	- / -	ON5JV	-20 / -	2	Partial capture
08-20 20:48	80m	+12 / +5	UB3BGN	-10 / -13	5	✓ Full exchange observed
08-20 20:45	80m	+13 / -16	R5VCR	-16 / -10	6	✓ Full exchange observed
08-20 20:44	80m	+16 / -	R3ICU	- / -13	2	✓ Closing fragment
08-20 20:42	80m	+12 / -	UA3IDQ	- / -18	2	Partial capture
08-20 20:39	80m	+10 / -8	RA3WPF	-1 / -4	5	✓ Full exchange observed
08-20 20:34	80m	+13 / -	IK8HJC	- / -16	3	✓ Closing fragment
08-20 20:33	80m	+12 / -4	DG4MCB	-11 / -10	5	✓ Full exchange observed
08-20 20:26	40m	-2 / +2	DL3BH	-9 / -9	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
231115  -2  943  EA5HM R2FDU RR73
231130 -13 1577  R2FDU EA5HM R-12
231145  -5  943  EA5HM R2FDU RR73 (x2)
231330  +3 1137  R2FDU RX3DCZ R-01
231345  -5  943  RX3DCZ R2FDU RR73
231400  -3 1137  R2FDU RX3DCZ 73
231445  -3  943  CQ R2FDU JO94
231515  -3  943  K3SWZ R2FDU -16 (x6)
231800 -16 1617  R2FDU II7MGXX R-08

80m

UTC    dB Audio  Message
204615 +18  878  IK0HBN R2FDU -03
204630  +6 2163  R2FDU IK0HBN R-02
204645 +10  878  IK0HBN R2FDU RR73
204700  +6 2163  R2FDU IK0HBN 73
205215 +15  878  R7CD R2FDU -10
205230  +3 1425  R2FDU R7CD R+00
205245 +13  878  R7CD R2FDU RR73
205300  +2 1425  R2FDU R7CD 73
213530 +14  878  RY2B R2FDU -07
213545  -3 1253  R2FDU RY2B R+01
213600 +17  878  RY2B R2FDU RR73
213615  -1 1253  R2FDU RY2B 73
213745 +19  878  UA0TP R2FDU -20 (x3)

20m

UTC    dB Audio  Message
114230  -8 2230  OR1A R2FDU RR73 (x2)
114400  -6 2230  PF1B R2FDU -22 (x6)
174815  -7 2229  7X3WPL R2FDU -14
175000  -8 1143  R2FDU 7X3WPL R-07 (x3)
120615 -17 1966  R2FDU R7ZY 73
120815 -10 1259  R2FDU RG6S RR73 (x2)

10m

UTC    dB Audio  Message
114700 -15  977  R2FDU RX6LQH -05
120130 -16 1978  R2FDU RZ6L 73
120630  -8 2595  R2FDU RX7O +01 (x2)
081800 -18 1547  R2FDU R7NO R-20 (x2)
081930  +6 2110  R2FDU IK2XYA JN45 (x2)
082300  -8 1278  R2FDU IZ6ENY JN62 (x2)
083830 -15 2484  R2FDU RV9CX -08
083900  -2  718  R2FDU IK2SND JN45 (x3)
110200 -21 1850  R2FDU RK4F R-03

60m

UTC    dB Audio  Message
183430  -5 2790  R2FDU LA4GHA JO59 (x2)

Decoder S/N history by band

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