DO1SDH — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Locator transmitted in a decoded message: JO51

Receiver-side FT8 activity involving DO1SDH, decoded by SO8OO in southeastern Poland. 28 related FT8 messages, 1 CQ messages, observed on 160m, 80m, 10m, across 7 UTC dates. Heard between 2026-06-20 and 2026-08-18.

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

-5 dB

Mean decoder S/N

Bands

80m 10m 160m

First seen: 2026-06-20
Last seen: 2026-08-18 19:10 UTC

Frequent QSO partners observed at SO8OO

Stations DO1SDH worked most often, as logged from our receiver:

SN2WWA · Poland SP5MXZ · Poland DH3DX · Fed. Rep. of Germany HB9EKJ · Switzerland DL9ATW · Fed. Rep. of Germany ZS6MGM · South Africa DO9BAU · Fed. Rep. of Germany SV1SSL · Greece DO5HOK · Fed. Rep. of Germany

Activity Heatmap

Locator transmitted by DO1SDH

Approximate centre of JO51, decoded 2026-08-18 21:09 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	DO1SDH S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-18 21:09	80m	-19 / -6	DO5HOK	+6 / +8	5	✓ Full exchange observed
08-18 21:07	80m	-16 / -17	SP5MXZ	-4 / -3	6	✓ Full exchange observed
08-04 21:20	80m	- / -12	HB9EKJ	-18 / -	3	✓ Closing fragment
08-04 21:14	80m	-14 / -11	HB10GBT	-1 / -1	4	Partial capture
08-04 21:13	80m	-12 / -8	DL9ATW	-2 / -	6	✓ Closing observed
07-24 19:22	80m	-22 / -	RG2T	- / -	3	Partial capture
07-15 07:16	10m	- / -13	SV1SSL	-13 / -	2	✓ Closing fragment
07-12 20:51	80m	- / -12	DO9BAU	-9 / -	2	✓ Closing fragment
06-29 20:44	80m	- / -18	SN2WWA	+2 / -	2	✓ Closing fragment
06-26 01:38	80m	-24 / -	IK4LZH	- / -	2	Partial capture
06-26 01:32	80m	-4 / 0	DH3DX	+1 / +9	5	✓ Full exchange observed
06-26 01:31	80m	-6 / -	RC6OD	- / -	3	Partial capture
06-26 01:24	80m	-11 / -	9A60CBM	- / -	8	Partial capture
06-26 01:18	80m	-10 / -	W1MK	- / -	2	Partial capture
06-20 13:59	10m	- / -15	ZS6MGM	-21 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
212030 -21 1493  DO1SDH HB9EKJ -12 (x3)
210500 -17 1571  LZ3AN DO1SDH JO51
210700 -14 1996  SP5MXZ DO1SDH JO51 (x2)
210745  -6 1995  DO1SDH SP5MXZ -17
210800 -19 1995  SP5MXZ DO1SDH R-03
210815  -1 1995  DO1SDH SP5MXZ RR73
210830 -20 1995  SP5MXZ DO1SDH 73
210930 -17  809  DO5HOK DO1SDH JO51
210945  +4  808  DO1SDH DO5HOK -06
211000 -22  809  DO5HOK DO1SDH R+08
211015  +7  808  DO1SDH DO5HOK RR73
211030 -17  808  DO5HOK DO1SDH 73

10m

UTC    dB Audio  Message
135915 -23 1463  DO1SDH ZS6MGM -15 (x2)
071630 -13 1037  DO1SDH SV1SSL -13 (x2)

160m

UTC    dB Audio  Message
013615 -10  638  CQ DO1SDH JO51                        a1

Decoder S/N history by band

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