IZ5SIH — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Locator transmitted in a decoded message: JN53

Receiver-side FT8 activity involving IZ5SIH, decoded by SO8OO in southeastern Poland. 403 related FT8 messages, 82 CQ messages, observed on 80m, 40m, 20m, 10m, across 29 UTC dates. Heard between 2026-05-22 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

403

Related messages

CQ messages

UTC dates heard

-10 dB

Mean decoder S/N

Bands

80m 20m 40m 10m

First seen: 2026-05-22
Last seen: 2026-08-20 11:52 UTC

Frequent QSO partners observed at SO8OO

Stations IZ5SIH worked most often, as logged from our receiver:

DA0WWA · Fed. Rep. of Germany ×4 II3WWA · Italy ×4 KP4WWA · Puerto Rico ×3 Z30WWA · North Macedonia ×3 SK3WWA · Sweden ×3 SN0WWA · Poland ×3 TA3XEE · Asiatic Turkey ×3 K2B · United States ×2 S09S · Western Sahara ×2 II6WWA · Italy ×2 CR2WWA · Azores ×2 VK6BAD · Australia ×2

Activity Heatmap

Locator transmitted by IZ5SIH

Approximate centre of JN53, decoded 2026-08-19 12:51 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	IZ5SIH S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-20 13:48	20m	-12 / -	TA3NK	-6 / 0	9	Partial capture
08-20 13:47	20m	-5 / +1	PD2WL	-9 / -3	8	✓ Full exchange observed
08-20 13:47	20m	-10 / -	IU5HIU	-7 / -17	5	Partial capture
08-20 13:40	20m	-6 / +1	RU6UR	-9 / 0	8	✓ Full exchange observed
08-20 10:00	20m	+2 / -	<...>	- / -	2	Partial capture
08-20 08:37	20m	-11 / -	RD3FY	-21 / -	2	✓ Closing observed
08-20 08:35	20m	-12 / -	G3EFG	- / -3	2	✓ Closing fragment
08-20 08:19	20m	+7 / +8	ON3JDK	-17 / +1	4	✓ Full exchange observed
08-20 08:18	20m	+3 / -2	R3KJF	-8 / -15	4	✓ Full exchange observed
08-20 08:17	20m	-6 / -	PD9FLX	- / +4	2	✓ Closing fragment
08-20 08:14	20m	+2 / 0	KH6M	+2 / -2	5	✓ Full exchange observed
08-20 08:06	20m	-2 / -	YV5JLO	- / -11	4	✓ Closing fragment
08-20 07:53	20m	-9 / -	YV5JLO	- / -24	3	Partial capture
08-20 07:45	20m	-1 / -	F4HSB	-4 / +3	4	✓ Closing observed
08-20 07:44	20m	-3 / -	PA0ARR	- / -3	2	✓ Closing fragment
08-20 07:20	20m	0 / -	HC2AD	- / -	2	Partial capture
08-20 06:40	20m	-4 / -	KA4UFM	- / -3	3	✓ Closing fragment
08-20 06:39	20m	-2 / -	HI8YMR	- / -19	2	✓ Closing fragment
08-20 06:36	20m	+1 / -	KE4EB	-2 / +2	3	✓ Closing observed
08-20 06:22	20m	-1 / -	VK4GJW	- / -12	5	✓ Closing fragment
08-20 06:20	20m	+4 / -	VK4KTW	- / -11	2	✓ Closing fragment
08-19 12:46	10m	-8 / -	UX7QV	- / -4	2	✓ Closing fragment
08-19 05:39	40m	-12 / -	ZL4SY	- / -12	2	✓ Closing fragment
08-19 05:31	40m	-6 / -	N2NDV	- / -	2	✓ Closing fragment
08-19 05:30	40m	-7 / -	ZL4SY	- / -	3	Partial capture
08-18 11:40	10m	-14 / -	ZS6KG	- / -	2	Partial capture
08-18 11:34	10m	-13 / -	OZ1SMB	- / -26	2	Partial capture
08-12 07:07	20m	- / -	UT4QM	-18 / -	2	Partial capture
08-12 07:04	20m	- / -1	DL5DQZ	-17 / -	3	✓ Closing fragment
08-12 07:03	20m	-14 / -2	OE3EHS	+16 / +3	4	Partial capture
08-12 06:56	20m	- / -6	DK3TNA	-7 / -	3	✓ Closing fragment
08-12 06:40	20m	- / -	<...>	-10 / -	2	Partial capture
08-12 06:34	20m	-16 / -	N0IDX	- / -18	2	✓ Closing fragment
08-11 13:07	20m	-22 / -	OH0ERF	- / -	4	Partial capture
08-11 12:51	20m	-13 / -	OY5T	- / -	7	Partial capture
08-11 12:49	20m	-2 / -	2E1HAT	- / -7	2	Partial capture
08-11 12:47	20m	-3 / -	IW5ALZ	- / -15	2	✓ Closing fragment
08-11 12:44	20m	-6 / -	IN3JRZ	- / -3	2	✓ Closing fragment
08-11 12:42	20m	-3 / -24	IZ0GIY	-12 / -14	7	✓ Full exchange observed
08-11 12:42	20m	-3 / +9	M9MAS	-8 / -11	4	✓ Full exchange observed
08-11 12:40	20m	-8 / -	EA3CY	- / -7	2	✓ Closing fragment
08-11 12:37	20m	-4 / -	IW5ALZ	- / -10	2	Partial capture
08-11 12:33	20m	-6 / -	2E1HAT	- / -6	2	Partial capture
08-11 12:08	20m	-10 / -	NN4SS	- / -	2	Partial capture
08-11 12:03	20m	-13 / -	TK/DJ0TP	- / -8	3	Partial capture
08-11 10:47	20m	-7 / -	VO1ANJ	- / -	2	Partial capture
08-11 10:42	20m	-15 / -	YV5WL	- / -18	3	Partial capture
08-11 10:40	20m	-13 / -4	DK1AJ	-12 / -25	5	✓ Full exchange observed
08-11 10:36	20m	-14 / -	<...>	- / -14	2	Partial capture
08-11 10:24	10m	-19 / -	VU2ADV	- / -12	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
134830  -5 1087  IZ5SIH PD2WL +01
134845 -13  705  IU5HIU IZ5SIH -17
134900 -12 1087  IZ5SIH PD2WL +01
134915  -7  705  IU5HIU IZ5SIH -17
134930  -4  705  IZ5SIH TA3NK KM39
134930 -12 1087  IZ5SIH PD2WL +01
134945  -9  705  PD2WL IZ5SIH R-03
135000 -17 1087  IZ5SIH PD2WL RR73
135015  -1  705  PD2WL IZ5SIH 73
135030 -10  706  IZ5SIH TA3NK KM39
135045 -13  705  TA3NK IZ5SIH -01
135100  -4  705  IZ5SIH TA3NK KM39 (x4)

10m

UTC    dB Audio  Message
091700 -11 2084  YL3ARE IZ5SIH JN53 (x2)
102300 -20 1106  CR7BUJ IZ5SIH R-09
102400 -21 1105  VU2ADV IZ5SIH R-12 (x2)
113445 -10  963  OZ1SMB IZ5SIH R-26 (x2)
114045 -15 1109  ZS6KG IZ5SIH JN53 (x2)
124030 -19 1997  <...> IZ5SIH R-02
124615  -3  713  CQ IZ5SIH JN53
124645  -8  713  UX7QV IZ5SIH -04 (x2)
124745  -6  713  GM3DGD IZ5SIH -11
125145  -5  713  YB1EWD IZ5SIH JN53

40m

UTC    dB Audio  Message
142715 -21 2206  CQ IZ5SIH JN53                        a1
142845 -21 2206  IW2CAK IZ5SIH RR73
052930  -3 2514  XE2AKL IZ5SIH JN53
053000  -6 2514  ZL4SY IZ5SIH JN53 (x3)
053130  -4 2514  N2NDV IZ5SIH JN53 (x2)
053400 -13 2514  XE2AKL IZ5SIH JN53
053500 -13 2514  ZL1SXG IZ5SIH JN53
053545 -10 2514  KC3LVG IZ5SIH JN53
053730 -13 2514  ZL1SXG IZ5SIH JN53
053900 -12 2514  ZL4SY IZ5SIH R-12 (x2)
054000  -9 2514  KD3CZT IZ5SIH JN53

Decoder S/N history by band

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