IR0IADU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sardinia

Receiver-side FT8 activity involving IR0IADU, decoded by SO8OO in southeastern Poland. 516 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 9 UTC dates in the available aggregate history. Observed between 2026-09-11 and 2026-09-19.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 516 FT8 messages attributed to IR0IADU as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (96%), followed by 80 m (4%). Most decodes (83%) fell within the six-hour window 19:00-01:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (63%); the estimated median was -6 dB.

Overview

516

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

80m · 19 40m · 497

First attributed message: 2026-09-11
Last attributed message: 2026-09-19 22:57 UTC

Observed FT8 message patterns

Attributed sample: 516 messages
Active dates: 9 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -15 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 47, moderate (-15 to -9 dB) 143, strong (≥ -8 dB) 326.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with IR0IADU in decoded directed-looking exchanges:

8Z96ND · Saudi Arabia AO77R · Spain DK2FM · Fed. Rep. of Germany IU3VGK · Italy JH2VVH · Japan KH8WW · American Samoa YT5DL · Serbia ON7GB · Belgium

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

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	IR0IADU S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 06:20	40m	- / +7	DK3MM	-7 / -	2	Partial capture
09-20 06:00	40m	- / -	DL1FAM	+7 / -	3	Partial capture
09-19 22:53	40m	+4 / -	<...>	+6 / -	3	✓ Closing fragment
09-19 22:50	40m	+2 / -	<...>	- / -	2	✓ Closing fragment
09-19 22:46	40m	+4 / -	<...>	0 / -	3	✓ Closing fragment
09-19 22:43	40m	+7 / -	<...>	- / -	2	✓ Closing fragment
09-19 22:41	40m	+8 / -	EA5TC	- / -4	2	Partial capture
09-19 22:36	40m	- / -1	OH3NDH	-3 / -	2	Partial capture
09-19 22:32	40m	- / -10	M0PEL	-8 / -	2	Partial capture
09-19 22:29	40m	-1 / -	EA5HM	-16 / +7	3	Partial capture
09-19 22:27	40m	-3 / -	<...>	-4 / -	8	✓ Closing fragment
09-19 22:24	40m	+4 / -	WY5I	- / -4	2	Partial capture
09-19 22:20	40m	+4 / -	<...>	- / -	4	✓ Closing fragment
09-19 21:52	40m	-5 / -	DM5KN	-10 / -16	3	Partial capture
09-19 21:50	40m	-8 / -	<...>	0 / -	9	✓ Closing fragment
09-19 18:16	40m	-3 / 0	S57CT	-3 / -6	3	Partial capture
09-19 15:22	40m	- / -9	YO5IB	-15 / -	3	Partial capture
09-19 15:12	40m	- / -	SP90K	-8 / -	2	Partial capture
09-19 15:00	40m	-10 / -	SP5EJG	- / 0	2	Partial capture
09-19 14:27	40m	- / -	SP90K	-5 / -	26	Partial capture
09-19 09:11	40m	- / -	IK3VVC	-9 / -	3	Partial capture
09-19 08:35	40m	- / -	<...>	-6 / -	2	✓ Closing fragment
09-19 08:35	40m	- / -6	YO3GNF	-14 / -	6	Partial capture
09-19 08:28	40m	- / -	<...>	+4 / -	2	✓ Closing fragment
09-19 08:28	40m	- / -17	OK1ACE	+3 / -	6	Partial capture
09-19 08:26	40m	- / -13	DK2FM	-2 / -	2	Partial capture
09-19 08:19	40m	- / -	<...>	-5 / -	3	✓ Closing fragment
09-19 06:08	40m	- / -8	SP3SX	-4 / -	2	Partial capture
09-18 21:26	40m	-4 / -	DL3MIB	- / -4	2	Partial capture
09-18 21:24	40m	-3 / -	<...>	-2 / -	7	✓ Closing fragment
09-18 21:23	40m	+1 / -	PE1NPS	0 / 0	2	Partial capture
09-18 21:21	40m	-9 / -15	OZ5AGJ	-3 / -15	7	Partial capture
09-18 21:18	40m	-14 / -2	HB9CNU	-20 / -14	3	Partial capture
09-18 21:12	40m	-5 / -	<...>	-19 / -	9	✓ Closing fragment
09-18 21:11	40m	-8 / -	G1ZHD	-13 / -12	2	Partial capture
09-18 21:06	40m	-4 / -	JA1SJV	- / -21	2	Partial capture
09-18 21:04	40m	- / -	IZ4EKI	-14 / -	2	Partial capture
09-18 21:03	40m	+3 / -	IU1TKQ	-4 / -8	3	Partial capture
09-18 21:03	40m	-4 / -	<...>	- / -	2	✓ Closing fragment
09-18 20:57	40m	- / -	PE1NPS	-4 / -	2	Partial capture
09-18 20:55	40m	-7 / -	ON1BMM	-8 / -1	2	Partial capture
09-18 20:52	40m	-6 / -	<...>	-20 / -	4	✓ Closing fragment
09-18 20:51	40m	-13 / +6	DL8MRE	-2 / -10	2	Partial capture
09-18 20:47	40m	-4 / -	CT1BFP	- / +1	3	Partial capture
09-18 20:43	40m	- / -	IU1TKQ	-5 / -	3	Partial capture
09-18 20:38	40m	-1 / -	JA1SJV	- / -16	2	Partial capture
09-18 20:35	40m	-6 / -	<...>	- / -	5	✓ Closing fragment
09-18 20:32	40m	-8 / -11	G1ZHD	-16 / -6	6	Partial capture
09-18 20:32	40m	-7 / -	<...>	-10 / -	2	✓ Closing fragment
09-18 20:31	40m	-4 / -5	DH5BO	-8 / -15	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
225200  +5  900  EA5JKT IR0IADU +08
225300  +4  900  HB9ELE IR0IADU +12
225330  +5  900  <...> IR0IADU RR73
225345  +6 1134  IR0IADU <...> 73
225400  +2  900  YO5EEE IR0IADU -02
225430  +2  900  <...> IR0IADU RR73
225500  -1  900  CQ IR0IADU
225700  +2  900  QRT IR0IADU
234445  +4 1134  IR0IADU HB9ELE -04
060015  +8 1773  IR0IADU DL1FAM JN49 (x3)
062030  -7 1977  IR0IADU DK3MM JN58 (x2)
080415 -15 1771  IR0IADU OM0MR R-13

80m

UTC    dB Audio  Message
211800 -13 1441  IR0IADU IK6GTF JN72 (x2)
211845  -1 2661  IR0IADU 9A7SFQ JN75
211900 -16 1441  IR0IADU IK6GTF JN72
211915  -5 2661  IR0IADU 9A7SFQ R-09
211930 -22 1441  IR0IADU IK6GTF JN72 (x6)
225415  +4 2660  IR0IADU F1PBZ +00
233415 +12 1443  IR0IADU YO8RSL KN37 (x2)
190630  -6 2661  IR0IADU OZ1A +02

20m

UTC    dB Audio  Message
134215 -18 2377  IR0IADU <...> 73 (x2)

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

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