HB9SDO — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Switzerland Locator transmitted in a decoded message: JN37

Receiver-side FT8 activity involving HB9SDO, decoded by SO8OO in southeastern Poland. 482 related FT8 messages, 123 CQ messages, observed on 80m, 40m, 20m, across 34 UTC dates. Heard between 2026-06-26 and 2026-08-17.

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

482

Related messages

123

CQ messages

UTC dates heard

-11 dB

Mean decoder S/N

Bands

80m 20m 40m

First seen: 2026-06-26
Last seen: 2026-08-17 05:38 UTC

Frequent QSO partners observed at SO8OO

Stations HB9SDO worked most often, as logged from our receiver:

HS0ZOY · Thailand ×2 R9MJ · Asiatic Russia ×2 DK2SHS · Fed. Rep. of Germany R7MP · European Russia M0XDC · England EB3JT · Spain LZ3CB · Bulgaria WB7UBC · United States RN6MA · European Russia RA8QC · Asiatic Russia K5VYT · United States M0SCK · England

Activity Heatmap

Locator transmitted by HB9SDO

Approximate centre of JN37, decoded 2026-08-15 15:17 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	HB9SDO S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-17 07:38	20m	-20 / -11	SV2HTW	-18 / -	3	✓ Closing observed
08-15 15:16	20m	-12 / -	K1BZ	- / -	4	Partial capture
08-15 07:12	20m	-15 / -	A61SD	- / -	6	Partial capture
08-15 06:56	20m	-17 / -	R8QA	- / -20	3	Partial capture
08-15 06:29	20m	-5 / -	<...>	- / -13	5	Partial capture
08-15 06:25	20m	-8 / -	A61SD	- / -	2	Partial capture
08-15 06:19	20m	-20 / -	R9MJ	- / -9	2	✓ Closing fragment
08-15 06:13	20m	-9 / -	UB0SMX/P	- / -	2	Partial capture
08-15 06:05	20m	-4 / -	UA9SY	- / -	2	Partial capture
08-15 05:58	20m	-10 / -	KM7FBY	- / -	4	Partial capture
08-15 05:54	20m	-9 / -	A61SD	- / -	5	Partial capture
08-15 05:40	20m	-14 / -	VK2VAR	- / -	6	Partial capture
08-15 05:34	20m	-3 / -	R9JAU	- / -	3	Partial capture
08-15 05:28	20m	-16 / -17	R9MJ	-17 / -9	12	✓ Full exchange observed
08-15 05:19	20m	-16 / -	A61SD	- / -	6	Partial capture
08-15 05:17	20m	- / -	R2EC	-12 / -	2	Partial capture
08-15 05:16	20m	- / -16	HC5F	-10 / -	2	✓ Closing fragment
08-15 05:13	20m	-10 / -	HC5F	- / -	2	Partial capture
08-15 05:10	20m	-13 / -	A61SD	- / -	7	Partial capture
08-15 04:54	20m	-12 / -	A61SD	- / -	20	Partial capture
08-15 04:49	20m	-12 / -	A61SD	- / -	2	Partial capture
08-15 04:37	20m	-5 / -	HC5F	- / -	7	Partial capture
08-15 04:33	20m	-18 / -	HP2NG	- / -	4	Partial capture
08-14 07:42	20m	-8 / -	VJ6X	- / -	4	Partial capture
08-14 07:32	20m	-8 / -	VJ6X	- / -	11	Partial capture
08-14 07:11	20m	-12 / -	4X1YA	- / -	2	Partial capture
08-14 06:52	20m	-14 / -	RW9RR	- / -	2	Partial capture
08-14 05:41	20m	-12 / -	SV2HTW	- / -	2	Partial capture
08-14 05:37	20m	-17 / -21	EN35UKR	-15 / -	2	Partial capture
08-14 04:42	80m	-8 / -	N9HXR	- / -	4	Partial capture
08-14 04:36	80m	-15 / -	9A4BP/P	- / -	10	Partial capture
08-14 04:29	80m	-13 / -	9A4BP/P	- / -	8	Partial capture
08-14 04:29	80m	- / +7	DK7ZT	+7 / -	5	Partial capture
08-14 04:28	80m	-10 / -2	DA6IT	-4 / -2	4	✓ Full exchange observed
08-13 20:10	20m	-17 / -	K5VYT	- / -19	2	✓ Closing fragment
08-13 20:08	20m	-6 / -	JA5ROH	- / -15	2	Partial capture
08-13 20:04	20m	-11 / -	KG4OJT	- / -20	3	✓ Closing fragment
08-13 19:15	20m	-10 / -	RA9J	- / -	2	Partial capture
08-11 20:52	20m	- / -17	HL2CFY	-13 / -	3	Partial capture
08-11 20:42	20m	-14 / -	JH8SIT	- / -	3	Partial capture
08-11 20:41	20m	-14 / -	W1QWT	- / -16	2	✓ Closing fragment
08-11 20:27	20m	-9 / -	HS0ZOY	- / -	2	Partial capture
08-11 20:19	20m	-9 / -	K4CAE	- / -15	8	Partial capture
08-11 20:08	20m	-4 / -	HS0ZOY	- / -	2	Partial capture
08-11 19:56	20m	-8 / -	HS0ZOY	-11 / -23	20	✓ Closing observed
08-11 19:36	20m	0 / -	HS0ZOY	- / -	6	Partial capture
08-09 14:53	20m	- / -	IU5HIU	-12 / -	2	Partial capture
08-06 06:08	20m	-16 / -	WA3MH	- / -	2	Partial capture
08-06 06:06	20m	-10 / -	HC5F	- / -17	2	Partial capture
08-04 07:48	20m	-16 / -	EA5GVJ	- / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
065645 -17  930  R8QA HB9SDO JN37 (x2)
071230 -15  882  A61SD HB9SDO JN37 (x6)
151615 -13  533  K1BZ HB9SDO JN37 (x4)
073815 -18 1324  HB9SDO SV2HTW -11 (x2)
073900 -20 1324  SV2HTW HB9SDO 73

80m

UTC    dB Audio  Message
043330 -14 1114  9A4BP/P HB9SDO JN37 (x11)
044215  -5  668  N9HXR HB9SDO JN37 (x4)

10m

UTC    dB Audio  Message
094545 -13  288  CT7AUT HB9SDO JN37 (x5)
095145 -16 1111  LA1HW HB9SDO JN37 (x5)
104730 -21 1224  RA5R HB9SDO JN37

40m

UTC    dB Audio  Message
172700 -17 2063  HB9SDO 9A4ZM JN86 (x3)
071900 -14 1905  HB9SDO DK7ZT +18 (x2)
072600  -9  508  HB9SDO DK0ACI RR73

Decoder S/N history by band

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