8F81SU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Indonesia

Receiver-side FT8 activity involving 8F81SU, decoded by SO8OO in southeastern Poland. 79 related FT8 messages, observed on 40m, 20m, across 11 UTC dates. Heard between 2026-08-10 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

-9 dB

Mean decoder S/N

Bands

20m 40m

First seen: 2026-08-10
Last seen: 2026-08-20 20:08 UTC

Frequent QSO partners observed at SO8OO

Stations 8F81SU worked most often, as logged from our receiver:

ZL1RPC/P · New Zealand ×2 F8KIC/P · France ×2 SM/DC0MM · Sweden ×2 EN35UKR · Ukraine SQ9DK/P · Poland RU5A/M · European Russia 9A60CBM · Croatia 8D81RI · Indonesia R7CA/M · European Russia II7MGXX · Italy UB1AVZ/P · European Russia 3B8/SQ9UM · Mauritius

Activity Heatmap

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	8F81SU S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-20 22:07	40m	- / -	<...>	0 / -	2	✓ Closing fragment
08-20 22:00	40m	- / -	<...>	+10 / -	2	✓ Closing fragment
08-20 20:09	40m	- / -25	F4ENK	+3 / -	3	Partial capture
08-16 21:53	40m	- / -	<...>	-18 / -	2	✓ Closing fragment
08-16 20:18	40m	- / -	<...>	-5 / -	2	✓ Closing fragment
08-14 15:41	20m	- / -17	F5HRH	-20 / -	4	Partial capture
08-13 21:01	40m	- / -	<...>	-15 / -	2	✓ Closing fragment
08-11 22:22	40m	- / -	<...>	-6 / -	2	✓ Closing fragment
08-11 22:22	40m	- / -	SP2PBY	-11 / -	3	Partial capture
08-11 21:54	40m	- / -	<...>	-16 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
201100  +3 1233  8F81SU F4ENK R-25
201130  +3 1233  8F81SU <...> 73
202030  -5 2021  8F81SU F8KIC/P 73
204830 -11 1007  8F81SU <...> 73 (x3)
215615  -5 1845  <8F81SU> EA7CPW IM86
215615  -3 1903  <8F81SU> PD7BDN JO22
215615  -5 1591  8F81SU RU5A/M RR73
215745  -7 1845  8F81SU <...> 73 (x3)
220345 -12 1898  8F81SU II7MGXX 73
220715  -5 1295  8F81SU <...> RR73 (x2)

20m

UTC    dB Audio  Message
154130 -19 1750  8F81SU F5HRH JN23 (x3)
154300 -22 1750  8F81SU <...> 73 (x2)
075330 -11  624  8F81SU SQ9DK/P RR73
160615  -6 2551  8F81SU <...> 73 (x7)
195530 +15 1472  8F81SU 9A60CBM RR73
214415 -12 1963  8F81SU <...> 73

Decoder S/N history by band

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