IW3RSW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN66

Receiver-side FT8 activity involving IW3RSW, decoded by SO8OO in southeastern Poland. 232 FT8 messages attributed to this token as transmitter, on 160m, 80m, 20m, across 13 UTC dates in the available aggregate history. Observed between 2026-07-14 and 2026-09-06.

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 232 FT8 messages attributed to IW3RSW as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (63%), followed by 20 m (35%) and 160 m (2%). Several six-hour UTC windows tied for the largest share (60%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (74%); the estimated median was -4 dB.

Overview

232

Messages attributed

UTC dates decoded

Active 15-min windows

-4 dB

Estimated median S/N

Bands

160m · 5 80m · 145 20m · 82

First attributed message: 2026-07-14
Last attributed message: 2026-09-06 20:44 UTC

Observed FT8 message patterns

Attributed sample: 232 messages
Active dates: 13 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -15 to +6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 19, moderate (-15 to -9 dB) 42, strong (≥ -8 dB) 171.

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 IW3RSW in decoded directed-looking exchanges:

OK1DXR · Czech Republic OM2WQ · Slovak Republic 9J2FI · Zambia KD4YTW · United States KE0N · United States T22TT · Tuvalu 9A4ZM · Croatia 9A5E · Croatia DO9BAU · Fed. Rep. of Germany EC3A · Spain F6FHZ · France HB9EFK · Switzerland

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 IW3RSW

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: JN66 · 173 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 755 km (approx.)
Last such locator decoded: 2026-09-06 20:39 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	IW3RSW S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-06 20:48	160m	- / -15	IK0XBX	+2 / -	3	Partial capture
09-06 20:40	160m	-20 / -7	OK1DXR	+3 / -9	11	✓ Full exchange observed
09-06 20:39	160m	-17 / -13	OM2WQ	+4 / -22	6	✓ Full exchange observed
08-31 17:17	80m	-2 / -	UR4LRG	- / -	3	Partial capture
08-31 17:13	80m	-4 / -	OK2BUZ	- / -	3	Partial capture
08-31 03:34	80m	+2 / -2	YO4NF	0 / -4	4	Partial capture
08-31 03:32	80m	+2 / +2	YU7AS	+18 / +1	6	✓ Full exchange observed
08-31 03:27	80m	+8 / -	G8OO	- / -	6	Partial capture
08-18 01:22	80m	+1 / -	PY8JL	- / -	22	Partial capture
08-18 01:14	80m	-6 / -	OH6IH	- / -	2	Partial capture
08-18 01:08	80m	+1 / -	K1HC	- / -9	6	✓ Closing fragment
08-18 01:06	80m	+4 / -	K4AWM	- / -	2	Partial capture
08-18 01:05	80m	+3 / -	W3DIY	- / -	2	Partial capture
08-18 01:00	80m	-2 / -	N7ELL	- / -26	5	Partial capture
08-17 21:45	80m	0 / -13	RT4A/QRP	-13 / -15	3	Partial capture
08-17 21:38	80m	+3 / +3	9A4ZM	+4 / +2	6	✓ Full exchange observed
08-17 21:36	80m	+2 / -4	PG5FRL	-18 / -14	6	✓ Full exchange observed
08-17 21:35	80m	0 / -4	OR7K	+1 / 0	5	✓ Full exchange observed
08-17 21:20	80m	-1 / -10	PA5TON	+4 / -	4	Partial capture
08-16 04:45	80m	-15 / -	F5PBG	- / -9	4	Partial capture
08-16 04:43	80m	-10 / +4	SP2BBQ	-8 / -8	6	✓ Full exchange observed
08-16 04:24	80m	-2 / -	KB1EFS	- / -	23	Partial capture
08-16 04:18	80m	-8 / -7	LY1DY	+1 / -9	7	✓ Full exchange observed
08-16 04:17	80m	-13 / -8	9A5E	+6 / -3	5	✓ Full exchange observed
08-16 04:13	80m	-12 / -	KC8JLW	- / -	2	Partial capture
08-16 04:08	80m	-2 / -	F5PBG	-17 / -7	8	Partial capture
08-16 04:06	80m	-8 / -3	YO6LM	-12 / -1	4	✓ Full exchange observed
08-16 04:05	80m	-6 / -5	HB9EFK	+5 / -4	4	✓ Full exchange observed
08-14 05:21	80m	-10 / -	PC5H	- / -	3	Partial capture
08-14 05:17	80m	-10 / -	OE8RPK	- / -	4	Partial capture
08-07 07:45	20m	-19 / -	P40AA	- / 0	2	Partial capture
08-07 07:39	20m	+1 / -	P40AA	- / -	6	Partial capture
08-05 02:17	80m	+1 / -	HI8UD	- / -	4	Partial capture
08-05 02:10	80m	+9 / -5	F6FHZ	-18 / -14	4	✓ Full exchange observed
08-05 02:10	80m	+5 / -	DL9KM	+4 / -3	6	Partial capture
08-05 02:10	80m	+4 / -17	DO9BAU	+12 / +1	9	✓ Full exchange observed
08-05 02:08	80m	+6 / -10	EC3A	-3 / -1	5	✓ Full exchange observed
08-05 02:05	80m	+7 / -5	LZ2VQ	0 / -	5	✓ Closing observed
08-05 02:04	80m	+6 / +9	IV3FSG	+9 / +1	3	Partial capture
08-05 02:00	80m	+3 / -	VA2EHQ	- / -	5	Partial capture
07-28 19:10	20m	-16 / -	9J2FI	- / -15	2	✓ Closing fragment
07-27 05:44	20m	-13 / -	KD4YTW	- / -10	2	✓ Closing fragment
07-27 05:43	20m	- / -	EB3JT	-7 / -	2	Partial capture
07-27 05:42	20m	-2 / -	KE0N	- / -15	2	✓ Closing fragment
07-27 05:40	20m	-5 / -	KH2SR	- / -16	3	Partial capture
07-27 05:33	20m	-8 / -	<...>	- / -12	5	Partial capture
07-24 07:37	20m	-10 / -	EL2BG	- / -	2	Partial capture
07-16 20:27	20m	-3 / -	T22TT	- / -23	3	✓ Closing fragment
07-16 13:30	20m	-1 / -	T22TT	- / -	4	Partial capture
07-16 13:23	20m	+5 / -	T22TT	- / -	5	Partial capture

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
204030 -20 1604  OM2WQ IW3RSW 73
204045  +5 1295  IW3RSW OK1DXR JO60 (x8)
204430 -20 1604  OK1DXR IW3RSW -09
204445  +7 1295  IW3RSW OK1DXR R-07 (x2)
204845  +2 2366  IW3RSW IK0XBX -15 (x3)

80m

UTC    dB Audio  Message
033300 +20 1155  IW3RSW YU7AS +02
033315  +6 1927  YU7AS IW3RSW R+01
033330 +16 1154  IW3RSW YU7AS RR73
033345  +2 1927  YU7AS IW3RSW 73
033400  -4 1928  IW3RSW YO4NF -02
033400  -1 1603  IW3RSW SN1A JO73
033430  +4 1928  IW3RSW YO4NF -02
033515  +5 1928  YO4NF IW3RSW R-04 (x2)
171345 -10 1637  OK2BUZ IW3RSW JN66 (x3)
171745  -8 2381  UR4LRG IW3RSW JN66 (x3)

20m

UTC    dB Audio  Message
054400  -8 1880  IW3RSW EB3JT JN01
054415 -14 1879  KD4YTW IW3RSW -10
054430 -16 2280  IW3RSW RD3FY KO85
054445 -12 1879  KD4YTW IW3RSW RR73
191045 -15 2464  9J2FI IW3RSW R-15 (x2)
191730  -9 2229  TK4QP IW3RSW JN66
073915 -16 2095  P40AA IW3RSW JN66 (x8)

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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