IU5VMC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN54

Receiver-side FT8 activity involving IU5VMC, decoded by SO8OO in southeastern Poland. 141 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 10 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-09-22.

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 141 FT8 messages attributed to IU5VMC as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (87%), followed by 80 m (12%) and 20 m (1%). Several six-hour UTC windows tied for the largest share (65%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (65%); the estimated median was -4 dB.

Overview

141

Messages attributed

UTC dates decoded

Active 15-min windows

-4 dB

Estimated median S/N

Bands

80m · 17 40m · 122 20m · 2

First attributed message: 2026-06-12
Last attributed message: 2026-09-22 05:01 UTC

Observed FT8 message patterns

Attributed sample: 141 messages
Active dates: 10 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -15 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 14, moderate (-15 to -9 dB) 35, strong (≥ -8 dB) 92.

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 IU5VMC in decoded directed-looking exchanges:

DO1FDK · Fed. Rep. of Germany DK3HJ · Fed. Rep. of Germany DL3JHK · Fed. Rep. of Germany F1DSZ · France F6FTB · France G0BLB · England HA7TM · Hungary HF7X · Poland PA2KV · Netherlands R4HLO · European Russia SP3GHC · Poland SP7TF · Poland

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 IU5VMC

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: JN54 · 104 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,013 km (approx.)
Last such locator decoded: 2026-09-22 05:01 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	IU5VMC S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 22:38	40m	-2 / -	R4HLO	- / -13	3	✓ Closing fragment
09-17 09:33	40m	- / -	OE8PIT	-8 / -	2	Partial capture
09-17 07:23	40m	- / +6	II0IHMG	-14 / -	3	Partial capture
09-17 05:51	40m	- / -	F1IQH	-12 / -	2	Partial capture
09-17 05:50	40m	- / -	PD2MAC	-10 / -	11	Partial capture
09-17 05:50	40m	- / -	DJ0MAB	-5 / -	2	Partial capture
09-17 05:46	40m	- / -	DL6UM	+4 / -	5	Partial capture
09-17 05:46	40m	- / -11	F1DSZ	-8 / -	2	✓ Closing fragment
09-17 05:46	40m	-18 / -10	G0BLB	-2 / -15	4	✓ Full exchange observed
09-17 05:39	40m	-8 / +6	F6FTB	+2 / -11	5	✓ Full exchange observed
09-17 05:36	40m	- / -	UA4FKT	-7 / -	3	Partial capture
09-17 05:28	40m	- / -6	TA3NK	-10 / -	5	✓ Closing fragment
09-15 06:12	40m	-19 / -5	TK/4O7CC	-9 / +1	2	Partial capture
09-15 06:03	40m	-22 / -	HA7TM	- / -	2	✓ Closing fragment
09-15 05:56	40m	- / -	DL6UM	+4 / -	3	Partial capture
09-14 21:29	40m	0 / -	DL6BCL	-8 / -19	2	Partial capture
09-14 21:22	40m	+2 / -15	SY1BKQ	+1 / -25	10	✓ Full exchange observed
09-14 21:15	40m	+2 / -15	PA2KV	-1 / -25	5	✓ Full exchange observed
09-14 21:13	40m	+3 / -	SP3GHC	- / -23	2	✓ Closing fragment
09-14 21:07	40m	-1 / -	DL3JHK	- / -25	3	✓ Closing fragment
09-14 21:04	40m	-4 / -	SP7TF	- / -18	2	✓ Closing fragment
09-14 21:04	80m	- / -	OZ5AGJ	-3 / -	2	Partial capture
09-14 21:00	80m	-2 / -	SV9MBH	- / +3	2	✓ Closing fragment
09-14 20:58	80m	- / -	R4FDK	-8 / -	3	Partial capture
09-14 20:55	80m	-6 / -	F1PBZ	- / +10	2	✓ Closing fragment
09-14 07:55	40m	- / -	DJ0MAB	-10 / -	3	Partial capture
09-14 07:47	40m	- / -	DJ0MAB	-10 / -	4	Partial capture
09-14 07:47	40m	- / -	IK2EBP	-19 / -	2	Partial capture
09-14 07:43	40m	- / -	DJ0MAB	-12 / -	3	Partial capture
09-14 07:42	40m	-10 / +9	DK3HJ	-8 / -1	3	✓ Full exchange observed
09-14 07:37	40m	- / -	DJ0MAB	-10 / -	2	Partial capture
08-30 20:27	40m	- / -14	TC30AGU	-5 / -	3	Partial capture
07-23 19:29	40m	- / -	DL3JHK	-12 / -	4	Partial capture
06-26 21:45	40m	-17 / -5	SQ2SKI	-2 / -8	5	✓ Full exchange observed
06-26 21:43	40m	-15 / -13	M0PEL	-18 / -	3	Partial capture
06-26 10:16	10m	- / -16	DO1FDK	-5 / -	7	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
224730  -2 1328  CQ DX IU5VMC JN54 (x4)
053745 -11 1139  SP9W IU5VMC RR73
053815 -14 1139  CQ IU5VMC JN54                        a1 (x10)

80m

UTC    dB Audio  Message
205830 -12 1242  IU5VMC R4FDK LO23
205845  -1 1076  CQ IU5VMC JN54 (x2)
205930  -5 1242  IU5VMC R4FDK LO23
205945  -1 1076  CQ IU5VMC JN54
210000  -6 1242  IU5VMC R4FDK LO23
210015  -2 1076  SV9MBH IU5VMC +03 (x2)
210115  +1 1076  CQ IU5VMC JN54 (x5)
210400  -5 1074  IU5VMC OZ5AGJ JO47 (x2)

20m

UTC    dB Audio  Message
202145  +1 1179  CQ IU5VMC JN54 (x2)

10m

UTC    dB Audio  Message
101600  -2 2447  IU5VMC DO1FDK JO41 (x2)
101700 -12 1469  IU5VMC ON1JP -13
101700  -7 2447  IU5VMC DO1FDK JO41 (x5)

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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