DO3SJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Locator transmitted in a decoded message: JO60

Receiver-side FT8 activity involving DO3SJ, decoded by SO8OO in southeastern Poland. 36 related FT8 messages, 7 CQ messages, observed on 80m, 10m, across 5 UTC dates. Heard between 2026-06-03 and 2026-08-05.

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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee

Overview

Related messages

CQ messages

UTC dates heard

-7 dB

Mean decoder S/N

Bands

80m 10m

First seen: 2026-06-03
Last seen: 2026-08-05 18:16 UTC

Frequent QSO partners observed at SO8OO

Stations DO3SJ worked most often, as logged from our receiver:

DO1FED · Fed. Rep. of Germany IQ6PE · Italy HB3YOY · Switzerland DK7UY · Fed. Rep. of Germany RK9DO · Asiatic Russia DO5SB · Fed. Rep. of Germany DA6NEL · Fed. Rep. of Germany IQ4LH · Italy YT3PL · Serbia SV9MBH · Crete SP1WK · Poland F1SYH · France

Activity Heatmap

Locator transmitted by DO3SJ

Approximate centre of JO60, decoded 2026-08-05 20:13 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	DO3SJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-05 20:16	80m	-2 / -	DA6NEL	- / -8	2	✓ Closing fragment
08-05 20:15	80m	0 / -12	HB3YOY	-16 / -4	4	✓ Full exchange observed
08-05 20:13	80m	-4 / +2	DK7UY	-4 / +7	5	✓ Full exchange observed
08-05 20:11	80m	-4 / -	SV9MBH	- / -14	2	✓ Closing fragment
08-05 20:11	80m	- / -17	R3HH	-5 / -	3	Partial capture
08-05 20:09	80m	+1 / -	YT3PL	+1 / -	4	✓ Closing observed
08-05 20:08	80m	- / -3	YO6LM	+9 / -	2	Partial capture
08-05 20:06	80m	-5 / -12	<...>	-5 / -1	3	Partial capture
07-05 11:46	10m	- / -2	F1SYH	-20 / -	4	✓ Closing fragment
06-26 16:07	10m	-11 / -	OZ5KAJ	- / -	3	Partial capture
06-26 16:05	10m	-6 / -	LU1VDF	- / -	2	Partial capture
06-26 16:03	10m	-11 / -	YT3PL	- / -1	2	Partial capture
06-26 15:51	10m	-18 / -	YT3PL	- / +1	2	Partial capture
06-06 19:40	80m	+4 / -	LY100RADIO	- / -	2	Partial capture
06-06 19:37	80m	+4 / -	DO1FED	- / -8	2	✓ Closing fragment
06-06 19:35	80m	0 / -	DO5SB	-4 / -	3	✓ Closing observed
06-06 19:30	80m	-1 / -	LY100RADIO	- / -	4	Partial capture
06-06 19:27	80m	0 / -	A71UN	- / -	4	Partial capture
06-03 19:48	80m	-12 / +5	SP1WK	-18 / +4	3	✓ Full exchange observed
06-03 19:42	80m	-13 / -	RK9DO	- / -10	4	✓ Closing fragment
06-03 19:33	80m	-6 / -	A71UN	- / -	10	Partial capture
06-03 19:30	80m	-5 / -7	IQ4LH	-10 / +7	5	✓ Full exchange observed
06-03 19:25	80m	-7 / -3	IQ6PE	-16 / 0	9	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
201315  -9 1533  CQ DO3SJ JO60
201330  -3 1533  DO3SJ DK7UY JO44
201345  -4 1533  DK7UY DO3SJ +07
201400  -3 1533  DO3SJ DK7UY R+02
201415  -3 1533  DK7UY DO3SJ RR73
201430  -1 2124  DO3SJ YO6LM -04
201430  -5 1533  DO3SJ DK7UY 73
201530 +16 2259  DO3SJ SP9UPH JO90
201530 -17 1526  DO3SJ HB3YOY -12
201530  +6 2583  DO3SJ IQ4JO JN63
201545  +0 1533  HB3YOY DO3SJ R-04
201600 -14 1526  DO3SJ HB3YOY RR73
201615  +0 1533  HB3YOY DO3SJ 73
201645  -2 1533  DA6NEL DO3SJ -08 (x2)

10m

UTC    dB Audio  Message
155215 -16 1490  YT3PL DO3SJ +01
155330  -5 2708  DO3SJ IQ4JO JN63
155345 -16 1490  CQ DO3SJ JO60
155445 -15 1490  RC5F DO3SJ -03
160345 -14 1491  YT3PL DO3SJ R-01 (x2)
160545  -6 1410  LU1VDF DO3SJ JO60 (x2)
160700 -12 1709  OZ5KAJ DO3SJ JO60 (x3)
114630 -20 1505  DO3SJ F1SYH JN25 (x4)

Decoder S/N history by band

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