IW3SGN — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving IW3SGN, decoded by SO8OO in southeastern Poland. 162 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 18 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-02.

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 162 FT8 messages attributed to IW3SGN as the transmitting token by decoded message structure across 18 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (73%), followed by 20 m (25%) and 10 m (2%). Most decodes (72%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (75%); the estimated median was -3 dB.

Overview

162

Messages attributed

UTC dates decoded

Active 15-min windows

-3 dB

Estimated median S/N

Bands

40m · 118 20m · 41 10m · 3

First attributed message: 2026-06-07
Last attributed message: 2026-10-02 15:47 UTC

Observed FT8 message patterns

Attributed sample: 162 messages
Active dates: 18 UTC dates
Estimated median S/N: -3 dB
Estimated 10th-90th percentile: -13 to +9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 9, moderate (-15 to -9 dB) 31, strong (≥ -8 dB) 122.

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 IW3SGN in decoded directed-looking exchanges:

IQ4JO · Italy ×2 BG5JGG · China IK2BUF · Italy IQ0AAX · Italy IQ2AAH · Italy YH2AZ · Indonesia

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 IW3SGN

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 · 70 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 821 km (approx.)
Last such locator decoded: 2026-10-02 15:47 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	IW3SGN S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-02 15:46	40m	-2 / -	IQ0QJ	- / -	2	Partial capture
10-02 15:42	40m	-1 / +6	IQ4JO	0 / +10	4	✓ Full exchange observed
10-02 15:40	40m	-5 / +8	IQ0AAX	-16 / -	3	✓ Closing observed
10-01 14:41	40m	+2 / -	IQ0YA	- / -	3	Partial capture
10-01 14:37	40m	+2 / +3	IQ4JO	-8 / +2	4	✓ Full exchange observed
09-01 16:00	40m	-8 / -	HF40BLP	- / -	3	Partial capture
08-31 13:59	40m	- / -	HA7JDU	+3 / -	2	Partial capture
08-31 13:58	40m	-14 / -	IR7MGGC	- / +5	2	Partial capture
08-31 13:57	40m	-16 / +2	IZ0MYH	-18 / +5	3	Partial capture
08-31 13:55	40m	-15 / -	IK2BUF	- / -1	3	✓ Closing fragment
07-21 21:01	40m	-6 / -	BG5JGG	- / -2	4	✓ Closing fragment
07-21 21:00	40m	-4 / -	BI8AWT	- / -	2	Partial capture
07-21 19:37	40m	-5 / -	IQ2AAH	-15 / -	4	✓ Full exchange observed
07-10 20:18	40m	0 / -	YH7AA	- / -	2	Partial capture
07-10 20:17	40m	-1 / -	YH2AZ	- / -21	3	✓ Closing fragment
07-05 16:09	40m	-6 / -	DA0WWA	-16 / +5	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
143730  +1 2112  IQ4JO IW3SGN R+02
143745  -8 2113  IW3SGN IQ4JO RR73
143800  +3 2112  IQ4JO IW3SGN 73
144145  -1 1124  IQ0YA IW3SGN JN65 (x3)
154030 -13 1730  IW3SGN IQ0AAX +08 (x2)
154115  -5 1731  IQ0AAX IW3SGN 73
154230  -1 2112  IW3SGN IQ4JO +06
154245  -2 2111  IQ4JO IW3SGN R+10
154300  +0 2112  IW3SGN IQ4JO RR73
154315  +0 2111  IQ4JO IW3SGN 73
154630  -1 1637  IQ0QJ IW3SGN JN65 (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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee