IV3DSI — 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: JN66

Receiver-side FT8 activity involving IV3DSI, decoded by SO8OO in southeastern Poland. 74 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-11.

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 74 FT8 messages attributed to IV3DSI as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (45%), followed by 20 m (27%) and 80 m (22%). Most decodes (78%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

80m · 16 40m · 33 20m · 20 10m · 5

First attributed message: 2026-06-08
Last attributed message: 2026-10-11 17:23 UTC

Observed FT8 message patterns

Attributed sample: 74 messages
Active dates: 8 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -23 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 32, moderate (-15 to -9 dB) 24, strong (≥ -8 dB) 18.

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 IV3DSI in decoded directed-looking exchanges:

DL7PIA · Fed. Rep. of Germany ×2 IZ8VYU · Italy ON4MAP · Belgium ON5WR · Belgium Z62NS · Republic of Kosovo

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 IV3DSI

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 · 48 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 755 km (approx.)
Last such locator decoded: 2026-10-11 17:23 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	IV3DSI S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-11 17:21	40m	-6 / -	DM8ITZ	- / -	4	Partial capture
10-11 17:19	40m	-10 / -	DL7PIA	- / -	3	Partial capture
10-09 19:53	80m	-24 / -	IZ8VYU	- / -5	2	✓ Closing fragment
10-09 18:54	40m	- / -	US2YW	-2 / -	3	Partial capture
10-09 18:51	40m	-4 / -7	IU7TUV	-17 / -	2	Partial capture
10-09 16:38	40m	-7 / -7	DL7PIA	-8 / -3	6	✓ Full exchange observed
10-06 21:49	80m	- / -4	DL7PIA	-1 / -	3	Partial capture
10-06 21:34	80m	-8 / -4	DL7PIA	-2 / -	4	Partial capture
09-10 23:10	80m	- / -24	Z62NS	-3 / -	2	✓ Closing fragment
09-10 23:04	80m	-22 / -15	ON5WR	-9 / -8	8	✓ Full exchange observed
09-10 23:02	80m	- / -	YO6LM	+12 / -	2	Partial capture
09-10 22:59	80m	-20 / -	ON4MAP	- / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
163930  -4 1803  DL7PIA IV3DSI R-03
163945 -10 1358  IV3DSI DL7PIA RR73
164000  -5 1804  DL7PIA IV3DSI 73
185145  -4 1804  IU7TUV IV3DSI JN66
185200 -17 1433  IV3DSI IU7TUV -07
185400  +0 1804  IV3DSI US2YW KN28 (x3)
171930 -12 1803  DL7PIA IV3DSI JN66 (x3)
172100  -8 1804  DM8ITZ IV3DSI JN66 (x4)

80m

UTC    dB Audio  Message
230545  -9 1698  IV3DSI ON5WR -15
230600 -21 1599  ON5WR IV3DSI R-08 (x3)
231030  -4 1355  IV3DSI Z62NS -24 (x2)
213445  -8 1719  DL7PIA IV3DSI JN66
213600  -3 1663  IV3DSI DL7PIA -04 (x6)
195330 -23 1769  IZ8VYU IV3DSI R-05 (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.

CW

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

Explore CW reception at SO8OO

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