I3ZWI — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN65

Receiver-side FT8 activity involving I3ZWI, decoded by SO8OO in southeastern Poland. 299 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 23 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-12.

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 299 FT8 messages attributed to I3ZWI as the transmitting token by decoded message structure across 23 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (56%), followed by 60 m (21%) and 80 m (11%). Most decodes (55%) fell within the six-hour window 21:00-03:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (76%); the estimated median was -2.2 dB.

Overview

299

Messages attributed

UTC dates decoded

Active 15-min windows

-2.2 dB

Estimated median S/N

Bands

80m · 34 60m · 63 40m · 32 20m · 166 10m · 4

First attributed message: 2026-06-06
Last attributed message: 2026-09-12 22:10 UTC

Observed FT8 message patterns

Attributed sample: 299 messages
Active dates: 23 UTC dates
Estimated median S/N: -2.2 dB
Estimated 10th-90th percentile: -14 to +8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 19, moderate (-15 to -9 dB) 53, strong (≥ -8 dB) 227.

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 I3ZWI in decoded directed-looking exchanges:

HG8LXL · Hungary ×2 IZ0MIT · Italy ×2 CE2SV · Chile IW8XLD · Italy PV8AJ · Brazil 5Z4VJ · Kenya BA3NZ · China BG5BNW · China BG7ZHS · China BH2WTV · China BV7RR · Taiwan JF1UVJ · Japan

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 I3ZWI

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: JN65 · 132 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 821 km (approx.)
Last such locator decoded: 2026-09-12 22:07 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	I3ZWI S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-12 22:08	60m	+8 / -7	IZ0MIT	-2 / -9	7	✓ Full exchange observed
09-12 22:07	60m	+6 / +4	LB5WB	+2 / +1	5	✓ Full exchange observed
09-05 03:07	40m	- / -	RV6F	-14 / -	4	Partial capture
09-05 03:06	40m	- / -17	WT2D	-4 / -	7	✓ Closing fragment
09-05 03:03	40m	- / -	K4YT	+2 / -	6	Partial capture
09-05 02:57	40m	- / +4	W6NWS	+5 / -	2	Partial capture
08-28 04:13	20m	- / -12	<...>	+6 / -	2	Partial capture
08-28 01:00	20m	- / -	F4BYA	+3 / -	4	Partial capture
08-28 00:50	20m	- / -	WD4CNO	-2 / -	2	Partial capture
08-27 22:17	20m	+1 / -10	KB3VNG	-4 / -3	5	✓ Full exchange observed
08-27 22:10	20m	- / -	M9NTS	0 / -	2	Partial capture
08-27 22:10	20m	- / -14	XQ1KK	-11 / -	5	✓ Closing fragment
08-27 22:05	20m	+3 / -	BG5BNW	- / -12	8	✓ Closing fragment
08-27 22:05	20m	- / -5	WA4FU	-2 / -	2	Partial capture
08-27 21:59	20m	- / -8	GW3TYI	-4 / -	3	Partial capture
08-27 21:55	20m	0 / -	JA6SEU	- / -	3	Partial capture
08-27 18:10	20m	+2 / -	BV7RR	- / -10	4	✓ Closing fragment
08-27 06:41	20m	+2 / -	PD3LKN	+12 / -14	8	✓ Closing observed
08-27 06:40	20m	- / -15	ON1DGN	+3 / -	3	Partial capture
08-27 06:40	20m	-4 / -	IQ4JO	+4 / -11	5	Partial capture
08-27 06:36	20m	+6 / -1	EA7BEI	-4 / -2	2	Partial capture
08-27 03:21	20m	- / -5	KE4EB	-9 / -	7	✓ Closing fragment
08-26 22:32	40m	- / -	PC2J	-5 / -	3	Partial capture
08-26 22:31	40m	+9 / -	VJ6X	- / -12	6	✓ Closing fragment
08-26 22:31	40m	- / -	9A4ZM	0 / -	2	Partial capture
08-26 22:26	40m	-3 / -	D2ACE	- / -11	3	✓ Closing fragment
08-25 21:30	20m	- / -	JA6TXU	-9 / -	3	Partial capture
08-25 19:16	20m	- / -	F5PBG	+5 / -	3	Partial capture
08-25 19:07	20m	- / -	RZ3Z/P	+5 / -	5	Partial capture
08-25 18:29	20m	- / -7	RU3QR	+8 / -	12	Partial capture
08-25 18:28	20m	- / -	F4BYA	+11 / -	2	Partial capture
08-25 18:23	20m	- / 0	M3WHB	-6 / -	3	✓ Closing fragment
08-25 18:21	20m	- / -3	UA4FEN	+4 / -	4	Partial capture
08-25 18:12	20m	- / -	OH1LA	-16 / -	4	Partial capture
08-25 18:12	20m	- / -6	5Z4VJ	-11 / -	6	✓ Closing fragment
08-19 11:38	10m	- / +2	IW8XLD	-8 / -	2	✓ Closing fragment
08-16 22:41	20m	-5 / -	BA3NZ	- / -10	7	✓ Closing fragment
08-16 22:37	20m	-3 / -	VE2LEZ	- / -	5	Partial capture
08-16 01:23	60m	- / -	PC2F	-13 / -	6	Partial capture
08-16 01:21	60m	-6 / -	<...>	- / -11	2	Partial capture
08-16 01:19	60m	-6 / -	KB8OTK	- / -	3	Partial capture
08-14 04:51	60m	-12 / -	VE3BNW	- / -	2	Partial capture
08-14 04:50	60m	-11 / -1	F5RAV	-14 / +1	7	✓ Full exchange observed
08-14 04:49	60m	-4 / +1	EA3AKY	-16 / +3	5	✓ Full exchange observed
08-06 04:09	40m	-5 / -	HJ4CL	- / -19	4	Partial capture
08-05 02:17	60m	-15 / -14	HG8LXL	+5 / -12	12	✓ Full exchange observed
08-05 02:16	60m	-8 / -	W4CHA	- / -6	2	✓ Closing fragment
08-05 02:14	60m	+8 / +3	DM8KM	-1 / -	3	✓ Closing observed
07-31 19:18	20m	-8 / -	BH2WTV	- / -13	4	✓ Closing fragment
07-31 18:28	20m	-7 / -7	RL3K	-8 / -9	6	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
012500 -12 1527  I3ZWI PC2F JO22 (x2)
220700  +3 2377  LB5WB I3ZWI JN65
220715  +6 2376  I3ZWI LB5WB +04
220730  +6 2377  LB5WB I3ZWI R+01
220745  -1 2376  I3ZWI LB5WB RR73
220800  +8 2377  LB5WB I3ZWI 73
220815  -5 2375  I3ZWI IZ0MIT JN61 (x2)
220900  +8 2376  IZ0MIT I3ZWI -09
220915  +1 2374  I3ZWI IZ0MIT R-07
220930  +9 2375  IZ0MIT I3ZWI RR73
220945  +3 2370  I3ZWI 9A4ZM JN86
221000  +6 2375  IZ0MIT I3ZWI RR73
221015  -1 2374  I3ZWI IZ0MIT 73

40m

UTC    dB Audio  Message
030415  +3 2660  I3ZWI K4YT FM19 (x4)
030615  -4 2659  I3ZWI WT2D EL96 (x3)
030715 -12 1370  I3ZWI RV6F LN14
030745  -2 2659  I3ZWI WT2D EL96
030745 -13 1371  I3ZWI RV6F LN14
030815  -3 2659  I3ZWI WT2D R-17 (x2)
030845 -16 1370  I3ZWI RV6F LN14
030915  -6 2660  I3ZWI WT2D 73
030945 -15 1370  I3ZWI RV6F LN14

20m

UTC    dB Audio  Message
221645  +5 1056  CQ I3ZWI JN65
221700  -3 1027  I3ZWI KB3VNG FN20
221715  +0 1027  KB3VNG I3ZWI -03
221730  -5 1027  I3ZWI KB3VNG R-10
221745  -3 1027  KB3VNG I3ZWI -03 (x2)
004845  +1  678  I3ZWI F1PBZ -13
005045  +0  376  I3ZWI WD4CNO EL87 (x2)
010015  +2 2715  I3ZWI F4BYA JN19 (x4)
041345  +8  463  I3ZWI <...> -12 (x2)

10m

UTC    dB Audio  Message
135645 -11 1278  I3ZWI DO3HCS JO52
140945 -14 2443  I3ZWI DN9AD JO52
214830 -14 1564  I3ZWI PV8AJ -05 (x2)
215100 -10 2561  CE2SV I3ZWI JN65
215115  -2 2560  I3ZWI CE2SV -21
215130 -11 2561  CE2SV I3ZWI R-02
215145  -2 2560  I3ZWI CE2SV RR73 (x2)
215230  -8 2562  CE2SV I3ZWI R-02 (x2)
215730  -9  658  I3ZWI SV2CLJ KN10 (x2)
113830  -7 1052  I3ZWI IW8XLD +02 (x2)

80m

UTC    dB Audio  Message
020045  +8  736  ZP5DBC I3ZWI JN65

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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