IU1VDW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN44

Receiver-side FT8 activity involving IU1VDW, decoded by SO8OO in southeastern Poland. 114 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 17 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-20.

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 114 FT8 messages attributed to IU1VDW as the transmitting token by decoded message structure across 17 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (46%), followed by 40 m (45%) and 20 m (8%). Several six-hour UTC windows tied for the largest share (72%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

114

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

80m · 2 40m · 51 20m · 9 10m · 52

First attributed message: 2026-06-06
Last attributed message: 2026-09-20 03:56 UTC

Observed FT8 message patterns

Attributed sample: 114 messages
Active dates: 17 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -20 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 21, moderate (-15 to -9 dB) 31, strong (≥ -8 dB) 62.

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 IU1VDW in decoded directed-looking exchanges:

AP2TN · Pakistan SX0W · Greece SP6AXW · Poland TI5RR · Costa Rica DJ0MAB · Fed. Rep. of Germany E70SZ · Bosnia-Herzegovina KL7J · Alaska OA4ENG · Peru T77NC · San Marino VJ6X · Australia

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 IU1VDW

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: JN44 · 77 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,137 km (approx.)
Last such locator decoded: 2026-09-20 03:54 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	IU1VDW S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 03:54	40m	+4 / -	KL7J	- / -	2	✓ Closing fragment
09-06 13:46	40m	-4 / -	AM42SDC	- / 0	5	Partial capture
09-06 13:44	40m	-7 / -	R9CS/P	- / -	3	Partial capture
09-05 19:33	40m	-13 / -16	T77NC	-6 / -	3	✓ Closing observed
09-02 11:38	10m	-4 / -	<...>	- / -14	8	Partial capture
09-02 04:41	40m	+4 / -	OA4ENG	- / -13	3	✓ Closing fragment
09-01 05:34	40m	-1 / -	D44TWO	- / -	3	Partial capture
08-30 19:11	20m	-2 / -	SP6AXW	- / -2	2	✓ Closing fragment
08-30 19:09	20m	-6 / -	R2FAQ	- / +1	2	Partial capture
08-27 19:26	40m	-7 / -	PB1PCH	- / -6	2	Partial capture
08-27 19:20	40m	-10 / -2	DJ0MAB	+6 / -3	6	✓ Full exchange observed
08-27 19:16	40m	-8 / -	<...>	- / -	5	Partial capture
08-27 19:08	40m	-8 / -	VJ6X	- / -23	10	✓ Closing fragment
08-21 05:18	20m	-6 / -11	TI5RR	-10 / -7	4	✓ Full exchange observed
08-19 21:57	40m	-2 / -	VK6BAD	- / -18	2	Partial capture
08-19 21:42	40m	-24 / -	OJ0YL	- / -	2	Partial capture
08-19 12:58	10m	0 / -	AP2TN	- / -14	3	✓ Closing fragment
06-30 13:04	10m	- / +1	SV1EKI	-16 / -	2	Partial capture
06-29 21:43	40m	- / +7	TM2WWA	-9 / -	2	Partial capture
06-29 09:49	10m	-12 / -	SX0W	- / -	2	✓ Closing fragment
06-27 18:48	40m	- / 0	E70SZ	-9 / -	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
044245  +0 2592  OA4ENG IU1VDW 73
193330 -13 2009  T77NC IU1VDW JN44
193515  -6  425  IU1VDW T77NC -16 (x2)
134445  -6 2576  R9CS/P IU1VDW JN44 (x3)
134615  -2 2574  AM42SDC IU1VDW JN44 (x4)
134830 -15 2233  IU1VDW HB0/DL5RMH +12
134845  -9 2573  AM42SDC IU1VDW R+00
035430  +3  386  KL7J IU1VDW JN44 (x2)

10m

UTC    dB Audio  Message
095045 -12  658  SX0W IU1VDW 73
130400 -19 2258  IU1VDW SV1EKI KM18 (x2)
195030 -22 1427  CX8AF IU1VDW JN44
125845  +3  694  AP2TN IU1VDW JN44 (x3)
113815  -8 2123  <...> IU1VDW JN44 (x8)

20m

UTC    dB Audio  Message
051830  -9 2265  TI5RR IU1VDW JN44
051845 -10  908  IU1VDW TI5RR -11
051900  -8 2265  TI5RR IU1VDW R-07 (x2)
190930  -3 2813  R2FAQ IU1VDW JN44 (x2)
191130  -3 2813  SP6AXW IU1VDW -02 (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.

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