IU8SDA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Locator transmitted in a decoded message: JN71

Receiver-side FT8 activity involving IU8SDA, decoded by SO8OO in southeastern Poland. 329 related FT8 messages, 75 CQ messages, observed on 80m, 60m, 40m, 20m, 10m, across 35 UTC dates. Heard between 2026-05-26 and 2026-08-23.

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

329

Related messages

CQ messages

UTC dates heard

-3 dB

Mean decoder S/N

Bands

80m 20m 60m 40m 10m

First seen: 2026-05-26
Last seen: 2026-08-23 20:45 UTC

Frequent QSO partners observed at SO8OO

Stations IU8SDA worked most often, as logged from our receiver:

OJ0Z · Market Reef ×2 HA3IC · Hungary ×2 JG3TRB · Japan ×2 HA3GX · Hungary ×2 TN8GD · Republic of the Congo ×2 XU7O · Cambodia ×2 N1WI · United States ×2 F5OHS · France ×2 DK5WL · Fed. Rep. of Germany ×2 DO3JP · Fed. Rep. of Germany IT9KWE · Sicily KP4CC · Puerto Rico

Activity Heatmap

Locator transmitted by IU8SDA

Approximate centre of JN71, decoded 2026-08-24 03:23 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	IU8SDA S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-24 03:24	40m	+3 / +2	F5HNQ	-3 / -4	2	Partial capture
08-24 03:19	40m	-1 / -	KI5NHZ	- / -	2	Partial capture
08-23 22:55	80m	+2 / -	IT9KWE	- / -8	3	✓ Closing fragment
08-23 22:52	80m	+10 / -	CX6TU	- / -21	3	✓ Closing fragment
08-23 22:44	80m	+2 / -	SM4IED	+16 / -	3	✓ Closing observed
08-23 22:40	80m	+12 / -	EA8AR	-17 / -14	4	✓ Closing observed
08-23 22:39	80m	+7 / +1	EW8AAC	+4 / -4	4	✓ Full exchange observed
08-23 22:35	80m	-8 / -	ZP5DBC	- / -	2	Partial capture
08-23 22:33	80m	- / -	DK9WI	+6 / -	2	Partial capture
08-23 22:30	80m	+2 / -	YE9BJM	- / -13	4	✓ Closing fragment
08-23 22:25	80m	+7 / +2	EA5HM	-8 / -	4	✓ Closing observed
08-23 22:25	80m	0 / -10	EC3A	-2 / -2	7	✓ Full exchange observed
08-23 22:24	80m	+5 / -	BG8SRK	- / -19	3	✓ Closing fragment
08-23 22:21	80m	+11 / -	XU7O	- / -20	3	✓ Closing fragment
08-21 00:43	20m	-20 / -	N5TAN	- / -	8	Partial capture
08-20 19:00	60m	+6 / -	IZ2WYA	-18 / -7	3	✓ Closing observed
08-20 18:59	60m	+4 / -2	F5OHS	+2 / +1	6	✓ Full exchange observed
08-20 18:55	60m	+3 / +9	OH3NAQ	+6 / -3	6	✓ Full exchange observed
08-20 18:49	60m	+3 / -	OJ0JR	- / -25	5	✓ Closing fragment
08-19 03:24	80m	+6 / -12	WD4OBP	-24 / -12	4	✓ Full exchange observed
08-19 03:13	80m	+6 / -	KM0T	- / -	13	Partial capture
08-19 03:11	80m	+5 / -	N4IP	- / -	2	Partial capture
08-19 03:10	80m	+7 / -	DH1KJ	- / -12	3	✓ Closing fragment
08-19 02:45	80m	+12 / -	A93MO	- / -25	3	✓ Closing fragment
08-19 02:43	80m	+10 / -	N4IP	- / -	2	Partial capture
08-19 02:35	80m	+10 / -	N4IP	- / -	2	Partial capture
08-19 02:32	80m	+15 / -	WC4H	-22 / -13	6	Partial capture
08-19 02:30	80m	+13 / -	KZ3P	- / -16	3	✓ Closing fragment
08-18 18:41	60m	-1 / -	OJ0YL	- / -	4	Partial capture
08-18 18:32	60m	-2 / -	OJ0YL	- / -	9	Partial capture
08-18 18:30	60m	-1 / -	ZS1IB	- / -21	4	✓ Closing fragment
08-18 18:26	60m	0 / -	OJ0YL	- / -	8	Partial capture
08-17 18:30	80m	+2 / -13	R8LCI	-10 / -21	4	✓ Full exchange observed
08-17 03:24	80m	+4 / -2	SQ2BXI	+10 / -3	5	✓ Full exchange observed
08-17 03:23	80m	+6 / +9	DO5PY	-12 / -6	5	✓ Full exchange observed
08-15 17:44	20m	-20 / -	XU7O	- / -12	2	✓ Closing fragment
08-15 02:21	60m	0 / -	AB8E	- / -18	2	✓ Closing fragment
08-15 02:20	60m	-2 / -	KP4CC	- / -15	2	✓ Closing fragment
08-15 02:18	60m	-2 / -	KZ8C	- / -10	2	✓ Closing fragment
08-15 02:16	60m	-2 / -	SV8GXC	-13 / -3	5	✓ Full exchange observed
08-15 02:13	60m	-2 / -	KE9AVF	- / -15	2	✓ Closing fragment
08-15 02:12	60m	-4 / +6	DL3JJ	-18 / +3	4	✓ Full exchange observed
08-15 02:12	60m	-3 / -1	F5MYK	-8 / -9	6	✓ Full exchange observed
08-15 01:52	80m	-11 / -	N5JEY	- / -	5	Partial capture
08-15 01:50	80m	-8 / -	KM0T	- / -	4	Partial capture
08-14 19:17	80m	+10 / -	JE6WOQ	- / -20	5	✓ Closing fragment
08-14 19:16	80m	+9 / -	RK9UE	- / -13	3	✓ Closing fragment
08-14 19:15	80m	+2 / -	R9FGF	- / -15	2	Partial capture
08-14 19:13	80m	-1 / -21	JH1BBT	-12 / -8	4	✓ Full exchange observed
08-14 19:11	80m	0 / -	JE6WOQ	- / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
020915 -24 1809  VP5G IU8SDA R-11 (x2)
021215 -19 1808  CQ IU8SDA JN71 (x2)
021415 -16 1809  KR4DVQ IU8SDA -15
021615 -19 1809  KK4RXE IU8SDA -10 (x3)
021945 -17 1809  9D7OZS IU8SDA JN71
031945  -4 1810  KI5NHZ IU8SDA JN71 (x2)
032315  -1 1810  CQ IU8SDA JN71 (x2)
032415  +3 1810  F5HNQ IU8SDA -04
032430  -3 2029  IU8SDA F5HNQ R+02

80m

UTC    dB Audio  Message
223930  +5 1696  IU8SDA EW8AAC RR73
223945  +8 1773  EW8AAC IU8SDA 73
224015 +13 1773  EA8AR IU8SDA JN71 (x2)
224100 -17 1751  IU8SDA EA8AR RR73
224115 +15 1773  EA8AR IU8SDA 73
224415  +2 1774  SM4IED IU8SDA JN71
224530 +16  546  IU8SDA SM4IED RR73
224545  +1 1773  SM4IED IU8SDA 73
225230 +10 1773  CX6TU IU8SDA JN71 (x3)
225500  +7 1773  IT9KWE IU8SDA JN71 (x3)

20m

UTC    dB Audio  Message
183700 -15 1848  TU5MM IU8SDA R+00 (x5)
174415 -18 1546  XU7O IU8SDA R-12 (x2)
004300 -16 1849  N5TAN IU8SDA JN71 (x8)

60m

UTC    dB Audio  Message
185515  +2 1803  OH3NAQ IU8SDA JN71 (x2)
185630  +7 2510  IU8SDA OH3NAQ +09
185645  +2 1803  OH3NAQ IU8SDA R-03
185700  +4 2511  IU8SDA OH3NAQ RR73
185715  +4 1803  OH3NAQ IU8SDA 73
185900  +6 1803  F5OHS IU8SDA JN71
185915  +3 1375  IU8SDA F5OHS -02
185930  +4 1803  F5OHS IU8SDA R+01
185945  +0 1375  IU8SDA F5OHS RR73
190000  +3 1804  F5OHS IU8SDA 73
190030 -18 2169  IU8SDA IZ2WYA JN46
190115  +6 1803  IZ2WYA IU8SDA -07
190115  +4 1375  IU8SDA F5OHS R-13
190145  +5 1803  IZ2WYA IU8SDA RR73

10m

UTC    dB Audio  Message
063245  -5 1863  VK6AAX IU8SDA JN71 (x3)
063415 -10 1863  YO4NF IU8SDA R-01 (x2)
143900 -11  924  IU8SDA A41ZZ -10
181945 -17 1862  3G0YM IU8SDA JN71 (x9)

Decoder S/N history by band

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