I4UUL — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN54

Receiver-side FT8 activity involving I4UUL, decoded by SO8OO in southeastern Poland. 172 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 17 UTC dates in the available aggregate history. Observed between 2026-08-27 and 2026-10-08.

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 172 FT8 messages attributed to I4UUL as the transmitting token by decoded message structure across 17 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (69%), followed by 80 m (31%). The busiest six-hour window was 03:00-09:00 UTC, containing 43% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (70%); the estimated median was -5 dB.

Overview

172

Messages attributed

UTC dates decoded

Active 15-min windows

-5 dB

Estimated median S/N

Bands

80m · 53 40m · 119

First attributed message: 2026-08-27
Last attributed message: 2026-10-08 15:50 UTC

Observed FT8 message patterns

Attributed sample: 172 messages
Active dates: 17 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -13 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 41, strong (≥ -8 dB) 121.

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 I4UUL in decoded directed-looking exchanges:

IU4QRO · Italy 5F4OBD · Morocco DG7NAO · Fed. Rep. of Germany DL9KM · Fed. Rep. of Germany F1PBZ · France IN3LHF · Italy IQ4JO · Italy IU8RFW · Italy KB3Z · United States LY1DY · Lithuania OE8PIT · Austria PA3GHJ · Netherlands

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 I4UUL

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: JN54 · 107 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,013 km (approx.)
Last such locator decoded: 2026-10-08 15:49 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	I4UUL S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-08 15:50	80m	-20 / -	DO2ZZ	- / -22	2	✓ Closing fragment
10-08 09:35	40m	-9 / -	4R2BSS	- / -	4	Partial capture
10-05 05:27	80m	-6 / -8	DO4DXA	+10 / +7	5	✓ Full exchange observed
10-05 05:27	80m	+2 / -	DO5PY	-4 / +2	3	✓ Closing observed
10-03 22:26	80m	+3 / -10	SM7HZK	-9 / -5	4	✓ Full exchange observed
10-03 21:17	80m	+13 / -	CT4KQ	-14 / -18	4	✓ Full exchange observed
10-03 21:17	80m	- / -	R2AL	+1 / -	3	Partial capture
09-16 04:06	40m	+1 / -3	KB3Z	0 / -1	10	✓ Full exchange observed
09-16 03:58	40m	-8 / -	6Y5HN	- / -	2	Partial capture
09-16 03:56	40m	-6 / -	XE1IHD	- / -	2	Partial capture
09-16 03:52	40m	-3 / -	TN8GD	- / -15	5	✓ Closing fragment
09-16 03:51	40m	+1 / -	LY1DY	- / -14	2	✓ Closing fragment
09-16 03:45	40m	-2 / -	OA4ENG	- / -	6	Partial capture
09-16 03:40	40m	0 / -	YS1CH	- / -	2	Partial capture
09-16 03:26	80m	- / -14	G8OO	+5 / -	5	✓ Closing fragment
09-16 03:24	80m	-13 / -3	F4IIX	-5 / -2	3	✓ Full exchange observed
09-16 03:11	80m	-10 / -15	VP2MAA	-14 / -10	7	Partial capture
09-14 16:18	40m	+1 / -14	EX7CQ	-1 / -	5	Partial capture
09-14 16:16	40m	+4 / -	IQ7AAV/P	- / -1	2	Partial capture
09-14 07:46	40m	-8 / -	VP5/K5UR	- / -	3	Partial capture
09-14 04:53	80m	-7 / -	HC1BG	- / -16	9	Partial capture
09-14 04:45	80m	-14 / -	HC1BG	- / -	6	Partial capture
09-14 04:17	80m	- / -7	F5NNN	0 / -	3	✓ Closing fragment
09-14 04:17	80m	-2 / -	K4YT	- / -25	2	✓ Closing fragment
09-13 14:19	40m	-1 / -17	TA2/TF1OL	-3 / -3	2	Partial capture
09-13 13:39	40m	-6 / +1	DG7NAO	-14 / -2	4	✓ Full exchange observed
09-13 13:37	40m	-6 / 0	PA3GHJ	-17 / -14	3	✓ Full exchange observed
09-13 13:34	40m	-10 / +2	IQ4JO	-16 / -2	3	✓ Full exchange observed
09-13 13:33	40m	-5 / -	IN3LHF	- / +1	2	✓ Closing fragment
09-13 13:28	40m	0 / -	TA2/TF1OL	- / -	4	Partial capture
09-13 07:26	40m	-12 / -	IU8RFW	- / 0	2	✓ Closing fragment
09-07 15:36	40m	-7 / -	YU4FQN	- / -	3	✓ Closing fragment
09-07 15:34	40m	+1 / -	DK3WL	- / +8	2	Partial capture
09-05 08:11	40m	-6 / -	T77NC	- / -6	3	✓ Closing fragment
09-02 18:10	40m	-5 / -	RI1FJL	- / -16	6	Partial capture
09-02 15:01	40m	-10 / +2	DL9KM	-3 / -	5	✓ Full exchange observed
09-02 13:26	40m	-10 / -	OE8PIT	-3 / -	3	✓ Closing observed
09-01 15:57	80m	-1 / -	DD0AM	- / -4	2	✓ Closing fragment
09-01 15:54	40m	-2 / -12	UA4FOZ	-19 / -19	7	Partial capture
09-01 15:53	40m	-2 / -7	F1PBZ	-14 / -	2	✓ Closing observed
09-01 15:48	40m	-4 / -	SV1TRJ	- / -7	3	✓ Closing fragment
08-31 06:15	40m	-2 / -	HI3RRR	- / -	2	Partial capture
08-30 21:49	40m	+1 / -	RI1FJL	- / -	3	Partial capture
08-30 21:42	40m	-11 / -	RI1FJL	- / -	6	Partial capture
08-30 21:34	40m	-10 / -	RI1FJL	- / -	2	Partial capture
08-28 15:44	40m	-12 / -	<...>	- / -	6	Partial capture
08-27 05:33	80m	-9 / -	<...>	- / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
222715  -5 1937  I4UUL SM7HZK R-10
222730  +2 2860  SM7HZK I4UUL RR73
052715  -2 2754  CQ I4UUL JN54
052730  -4 2303  I4UUL DO5PY JN49
052730 +13  506  I4UUL DO4DXA JN58
052745  -7 2754  DO4DXA I4UUL +07
052800  +7  506  I4UUL DO4DXA R-08
052815  -4 2754  DO4DXA I4UUL RR73
052830 +11  506  I4UUL DO4DXA 73
052845  +1 2754  DO5PY I4UUL +02 (x2)
154830  -6 2327  CQ I4UUL JN54 (x2)
155000 -18 2164  DO2ZZ I4UUL -22 (x2)

40m

UTC    dB Audio  Message
040745  -1 2893  I4UUL KB3Z FN20 (x2)
040830  +2 2894  KB3Z I4UUL -05
040845  +1 2893  I4UUL KB3Z R-03
040900  +4 2894  KB3Z I4UUL RR73
040915  +1 2893  I4UUL KB3Z 73
203715 -11 2477  I4UUL EA1VJ IN72 (x2)
143515  -2 2787  EX7CQ I4UUL JN54
093545  -8  731  4R2BSS I4UUL JN54 (x4)
154500  +7 3095  CQ I4UUL JN54 (x2)

20m

UTC    dB Audio  Message
051100 -24  467  I4UUL RI1FJL R-06

10m

UTC    dB Audio  Message
131700  -6 2828  I4UUL IU4QRO 73

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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