DM4SB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Locator transmitted in a decoded message: JN58

Receiver-side FT8 activity involving DM4SB, decoded by SO8OO in southeastern Poland. 74 related FT8 messages, 5 CQ messages, observed on 80m, 20m, across 9 UTC dates. Heard between 2026-05-30 and 2026-08-20.

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

Related messages

CQ messages

UTC dates heard

-7 dB

Mean decoder S/N

Bands

80m 20m

First seen: 2026-05-30
Last seen: 2026-08-20 19:37 UTC

Frequent QSO partners observed at SO8OO

Stations DM4SB worked most often, as logged from our receiver:

F4DIA · France 9A3AUH · Croatia CN8NS · Morocco S56ZIV · Slovenia IQ4JO · Italy IK2JYT · Italy DO9ST · Fed. Rep. of Germany IK5IVP · Italy GB9SOS · Wales DB4MLA · Fed. Rep. of Germany SQ9LOJ · Poland HA3GO · Hungary

Activity Heatmap

Locator transmitted by DM4SB

Approximate centre of JN58, decoded 2026-08-20 21:36 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	DM4SB S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-20 21:36	80m	-13 / -3	DO4LC	-10 / +5	5	✓ Full exchange observed
08-20 19:29	80m	-19 / -10	DL5VEN	-8 / -	2	✓ Closing observed
08-20 19:27	80m	- / -16	DF2JK	-16 / -	2	✓ Closing fragment
08-20 19:24	80m	-14 / -14	HA3GO	+1 / -1	5	✓ Full exchange observed
08-20 19:21	80m	-24 / -17	OL900CO	+7 / -	2	Partial capture
08-20 19:06	80m	-13 / -19	DK0ACI	-7 / -7	4	✓ Full exchange observed
08-15 15:03	20m	- / -11	<...>	-7 / -	2	Partial capture
08-12 20:48	80m	+2 / 0	DR800WE	+10 / +8	3	Partial capture
08-12 20:46	80m	-8 / -	LZ1GC	- / -	3	Partial capture
08-12 19:50	20m	- / -15	HB9EKJ	-18 / -	4	Partial capture
08-12 19:45	20m	- / -7	IK2JYT	-10 / -	2	✓ Closing fragment
08-10 21:06	20m	- / -9	IK5IVP	-7 / -	2	✓ Closing fragment
08-10 20:06	20m	- / -8	9A3AUH	0 / -	2	✓ Closing fragment
08-10 19:37	20m	- / -12	UA3SNB	-18 / -	2	✓ Closing fragment
08-10 18:20	20m	- / -15	F4HPW	-12 / -	2	✓ Closing fragment
08-10 18:11	20m	- / -15	CN8NS	-16 / -	4	✓ Closing fragment
08-10 18:06	20m	- / -13	G3VCQ	-10 / -	2	✓ Closing fragment
07-22 20:52	80m	-20 / -3	DA6VK	-12 / -7	4	✓ Full exchange observed
07-22 20:49	80m	-22 / -11	DO5PY	-10 / 0	6	✓ Full exchange observed
07-22 20:48	80m	-12 / -18	DO9ST	-2 / -	3	✓ Closing observed
07-22 20:45	80m	-14 / -15	SP7AAO	+10 / -10	2	Partial capture
07-22 20:34	80m	-15 / -13	DJ3WF	-24 / -10	3	✓ Full exchange observed
06-24 19:54	80m	-21 / -	DL2VAH	- / -12	2	Partial capture
06-24 19:50	80m	-16 / -10	DB4MLA	+5 / +10	4	✓ Full exchange observed
06-24 19:48	80m	-16 / -8	SQ9LOJ	+12 / -3	5	✓ Full exchange observed
06-03 20:20	80m	-14 / -	LY100RADIO	- / -	3	Partial capture
06-03 20:18	80m	-17 / -13	S56ZIV	+1 / -17	5	✓ Full exchange observed
06-03 20:15	80m	-11 / -4	IR2RAOR	-21 / -11	3	Partial capture
06-03 20:13	80m	-20 / -14	II2RBUS	-9 / -2	2	Partial capture
06-03 20:12	80m	-21 / -16	IQ4JO	+2 / -	3	✓ Closing observed
05-30 11:06	20m	- / -9	EA5WD	+8 / -	2	✓ Closing fragment
05-30 10:48	20m	- / -20	GB9SOS	-5 / -	2	✓ Closing fragment
05-30 10:06	20m	- / -	SV7BAY	+2 / -	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
192445 -17 1095  HA3GO DM4SB JN58
192500  +2 1095  DM4SB HA3GO -14
192515 -16 1095  HA3GO DM4SB R-01
192530  +0 1095  DM4SB HA3GO RR73
192545  -8 1095  HA3GO DM4SB 73
192615 -16 1796  DO2OLD DM4SB JN58
192700 -19  730  DM4SB DF2JK -16 (x2)
192915  -8 2304  DM4SB DL5VEN -10
193000 -19 2304  DL5VEN DM4SB 73
213615 -13  695  DO4LC DM4SB JN58
213700 -11  695  DM4SB DO4LC -03
213715 -13  695  DO4LC DM4SB R+05
213730  -8  695  DM4SB DO4LC RR73
213745 -14  696  DO4LC DM4SB 73

20m

UTC    dB Audio  Message
185200 -12  901  GM3AND DM4SB JN58
185300 -14 1473  LA7DMA DM4SB JN58
190630 -15 1366  DM4SB OZ7CL -12
192015 -21  982  DM4SB F4DIA RR73
194530 -11 1024  DM4SB IK2JYT -07 (x2)
195015 -19 1564  DM4SB HB9EKJ -15 (x4)
200000 +11 2809  DM4SB DG2BWG -12
150330  -7 2896  DM4SB <...> -11 (x2)
183930  +1 2153  DM4SB LA1K RR73
190115  -8  882  DM4SB MM0TBH -04

Decoder S/N history by band

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