IU2SLI — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN45

Receiver-side FT8 activity involving IU2SLI, decoded by SO8OO in southeastern Poland. 2,246 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 96 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-04.

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 2,246 FT8 messages attributed to IU2SLI as the transmitting token by decoded message structure across 96 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (45%), followed by 20 m (39%) and 80 m (13%). The busiest six-hour window was 15:00-21:00 UTC, containing 40% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

2,246

Messages attributed

UTC dates decoded

338

Active 15-min windows

-9 dB

Estimated median S/N

Bands

80m · 285 60m · 66 40m · 1,000 20m · 881 10m · 14

First attributed message: 2026-06-06
Last attributed message: 2026-10-04 07:28 UTC

Observed FT8 message patterns

Attributed sample: 2,246 messages
Active dates: 96 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -19 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 491, moderate (-15 to -9 dB) 734, strong (≥ -8 dB) 1,021.

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 IU2SLI in decoded directed-looking exchanges:

F1PBZ · France ×4 ON4MAP · Belgium ×4 RY3F · European Russia ×3 IU7VOL · Italy ×3 7X2KF · Algeria ×2 DH5BM · Fed. Rep. of Germany ×2 EC3A · Spain ×2 G4UJS · England ×2 GJ0KYZ · Jersey ×2 TA4SSK · Asiatic Turkey ×2 TN8GD · Republic of the Congo ×2 YO9FKI · Romania ×2

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.

Most frequent locator attributed to IU2SLI

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator: JN45 · 1,086 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,075 km (approx.)
Last such locator decoded: 2026-10-04 07:28 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

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	IU2SLI S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-04 07:25	40m	-15 / +4	F8VNU	-19 / +3	4	✓ Full exchange observed
10-04 07:13	40m	-14 / -	DC9TS	- / +7	2	✓ Closing fragment
10-04 07:11	40m	-19 / -	MW7RHR	- / -4	2	✓ Closing fragment
10-04 01:31	80m	0 / -	KD5M	- / -	4	Partial capture
10-04 01:28	80m	+4 / -	F6FHZ	- / -17	2	✓ Closing fragment
10-04 01:24	80m	-8 / -	GM6URC	- / +2	2	✓ Closing fragment
10-04 01:22	80m	-10 / -	UA4PDJ	- / -19	2	✓ Closing fragment
10-04 01:20	80m	-5 / -	DA6OOM	- / -13	2	✓ Closing fragment
10-04 01:16	80m	-4 / -	ON4MAP	- / -8	2	✓ Closing fragment
10-04 01:10	80m	-9 / -14	RX3ASQ	+4 / -2	5	✓ Full exchange observed
10-04 01:08	80m	-9 / -2	LY8O	+5 / +6	5	✓ Full exchange observed
10-04 01:06	80m	-8 / -5	OK1WCF	+13 / -	5	✓ Full exchange observed
10-04 01:05	80m	-7 / -8	R2AL	+8 / -3	5	✓ Full exchange observed
10-04 00:54	40m	- / -14	PT7YV	-4 / -	3	✓ Closing fragment
10-04 00:47	40m	- / -10	HK4QXX	-20 / -	5	✓ Closing fragment
10-04 00:44	40m	- / -12	UA9SY	-19 / -	3	✓ Closing fragment
10-03 07:16	40m	- / +2	OE6PVG	-3 / -	9	✓ Closing fragment
10-02 19:53	60m	-14 / -14	DM8ET	-22 / -10	5	✓ Full exchange observed
10-02 19:50	60m	-8 / -	US2YW	- / -3	2	✓ Closing fragment
10-02 19:49	60m	- / -	OH3MB	+3 / -	3	Partial capture
10-02 19:48	60m	-8 / +1	DH4PAP	-1 / -8	10	✓ Full exchange observed
10-02 19:48	60m	-6 / +3	OK1BN	-9 / -	7	✓ Full exchange observed
10-02 19:48	60m	-15 / -	ON7GB	-1 / +5	5	✓ Full exchange observed
10-02 19:46	60m	-13 / -	SP5JMA	- / -14	3	Partial capture
10-02 19:45	60m	-12 / -	F4MZI	- / -10	2	✓ Closing fragment
10-02 19:44	60m	-12 / +2	DK7UY	-2 / +8	4	✓ Full exchange observed
10-02 19:43	60m	-8 / +1	ON7KEI	-18 / -2	5	✓ Full exchange observed
10-02 17:24	40m	- / -	OE6PVG	-3 / -	5	Partial capture
10-01 17:28	40m	-14 / -	DV3LDZ	- / -	2	Partial capture
10-01 17:07	60m	-12 / +3	OE5DML	-12 / 0	5	✓ Full exchange observed
10-01 17:06	60m	-9 / +3	IW2OHP	-3 / +8	5	✓ Full exchange observed
10-01 17:04	60m	-12 / -	DK7ZT	-10 / +4	3	✓ Closing observed
10-01 17:03	60m	-12 / -	DK1MBY	- / -14	2	✓ Closing fragment
10-01 00:39	80m	- / -	SV7TRK	-12 / -	2	Partial capture
10-01 00:23	80m	-12 / +1	ON4MAP	-10 / -5	5	✓ Full exchange observed
10-01 00:20	80m	-6 / -15	F4BJN	-18 / -7	5	✓ Full exchange observed
10-01 00:20	80m	-12 / -10	HG8LXL	+12 / -3	5	✓ Full exchange observed
10-01 00:09	60m	-21 / -5	F5HNQ	+11 / -	8	Partial capture
10-01 00:04	60m	- / -	OH1LA	-12 / -	2	Partial capture
10-01 00:04	60m	-13 / -	W3TW	- / -13	9	Partial capture
10-01 00:02	60m	-8 / 0	DD6ZV	-8 / +10	4	✓ Full exchange observed
10-01 00:02	60m	- / -	PC2J	-4 / -	2	Partial capture
09-30 23:59	60m	-9 / -	G0AZH	-8 / -	3	✓ Closing observed
09-30 23:58	60m	-6 / -6	EA4GRZ	-12 / 0	4	✓ Full exchange observed
09-30 23:55	60m	-8 / -	DL2BIS	-18 / -24	4	✓ Closing observed
09-30 23:55	60m	-10 / +7	9A4ZM	-2 / +8	5	✓ Full exchange observed
09-29 17:42	40m	- / -	S53AK	-6 / -	2	✓ Closing fragment
09-26 00:10	80m	-15 / -17	R5AV	-4 / 0	4	✓ Full exchange observed
09-26 00:07	80m	-9 / -3	DL9KM	-5 / +2	7	✓ Full exchange observed
09-26 00:05	80m	-13 / -	ON4MAP	-20 / -	2	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
072030 -17 1891  CQ IU2SLI JN45 (x3)
072300 -18 1892  DB8BT IU2SLI RR73
072330 -18 1892  CQ IU2SLI JN45 (x5)
072545 -18 1353  IU2SLI F8VNU JN13
072600 -15 1892  F8VNU IU2SLI +03
072615 -17 1353  IU2SLI F8VNU R+04 (x2)
072700 -18 1892  DG1KSA IU2SLI -03
072830 -19 1892  CQ IU2SLI JN45

80m

UTC    dB Audio  Message
012545  -6 1855  CQ IU2SLI JN45 (x6)
012845  +4 1855  F6FHZ IU2SLI -17 (x2)
012945  -4 1855  CQ IU2SLI JN45 (x3)
013145  +4 1855  KD5M IU2SLI JN45 (x4)

60m

UTC    dB Audio  Message
195045 -12 1880  US2YW IU2SLI -03 (x2)
195145 -10 1880  CQ IU2SLI JN45
195200 -23 1879  IU2SLI EB5R IM99
195200  -3  486  IU2SLI DH4PAP JO30
195215 -10 1880  DH4PAP IU2SLI -08
195230  +1  486  IU2SLI DH4PAP R+01
195245  -7 1880  DH4PAP IU2SLI RR73
195300 -22 2092  IU2SLI DM8ET -14
195300  +5  485  IU2SLI DH4PAP 73
195315 -13 1880  DM8ET IU2SLI R-10 (x4)
195515 -20 1880  CQ IU2SLI JN45

20m

UTC    dB Audio  Message
162530  +0  588  CQ IU2SLI JN45 (x2)
162630  -4  588  SP8ATA IU2SLI -17
163245 -10 2137  IU2SLI RA4HG RR73
163445 -13  587  IU2SLI MI7JQH IO74
165930  -8  930  Z21ML IU2SLI JN45 (x4)
170715 -15 1673  BZ8SOZ IU2SLI JN45 (x2)
170845 -15 1673  CQ IU2SLI JN45
170915 -12  420  <RI1FJL> IU2SLI JN45
171500 +30  418  IU2SLI RK4FF -03 (x2)

10m

UTC    dB Audio  Message
164130 -24 1876  EA5UI IU2SLI -09
092900 -18 1128  IU2SLI PD1HPB R-03
174745 -16 2228  IU7VOL IU2SLI -10 (x3)

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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