IV3MJJ — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving IV3MJJ, decoded by SO8OO in southeastern Poland. 35 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-07-07.

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 35 FT8 messages attributed to IV3MJJ as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (71%), followed by 20 m (14%) and 10 m (14%). Several six-hour UTC windows tied for the largest share (94%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

40m · 25 20m · 5 10m · 5

First attributed message: 2026-06-07
Last attributed message: 2026-07-07 20:21 UTC

Observed FT8 message patterns

Attributed sample: 35 messages
Active dates: 6 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -21 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 11, moderate (-15 to -9 dB) 10, strong (≥ -8 dB) 14.

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 IV3MJJ in decoded directed-looking exchanges:

DK7UY · Fed. Rep. of Germany YO8WW · Romania EB3JT · Spain LX1RFJ · Luxembourg 5Z4VJ · Kenya E2WWA · Thailand HB9EFK · Switzerland HG8LXL · Hungary IZ8PPI · Italy R6DJR · European Russia RW9QA · Asiatic Russia

Most frequent locator attributed to IV3MJJ

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 · 4 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 821 km (approx.)
Last such locator decoded: 2026-06-30 19:32 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	IV3MJJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-29 13:42	20m	- / -12	EB3JT	+4 / -	5	✓ Closing fragment
07-08 13:16	20m	- / -	EA3HMM	0 / -	2	Partial capture
07-07 20:20	40m	-6 / -	<...>	- / 0	2	Partial capture
07-07 20:18	40m	-6 / -	5Z4VJ	- / -6	2	✓ Closing fragment
07-07 20:03	20m	- / -4	LX1RFJ	-18 / -	2	✓ Closing fragment
06-30 19:32	40m	-21 / +1	HB9EFK	-8 / -	5	✓ Full exchange observed
06-30 19:29	40m	- / -9	RW9QA	-13 / -	3	✓ Closing fragment
06-30 19:26	40m	-16 / -	E2WWA	- / -	3	✓ Closing fragment
06-30 19:24	40m	-14 / -	R6DJR	-13 / -1	3	✓ Closing observed
06-30 19:23	40m	-9 / -	IZ8PPI	- / +10	2	✓ Closing fragment
06-30 19:22	40m	-8 / -7	HG8LXL	-9 / +9	5	✓ Full exchange observed
06-24 18:35	10m	-16 / -	YO8WW	- / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
200100 -16 2434  LX1RFJ IV3MJJ -07
200315 -18 1930  IV3MJJ LX1RFJ 73 (x2)
200415 -13  608  IV3MJJ IS0/IK2YCW R+04
131600  +0  638  IV3MJJ EA3HMM JN00 (x2)
134200  +1 2069  IV3MJJ EB3JT JN01 (x5)

40m

UTC    dB Audio  Message
192630 -16 2337  E2WWA IV3MJJ JN65 (x2)
192900 -13 1209  IV3MJJ RW9QA -09 (x3)
193230 -19 1883  HB9EFK IV3MJJ JN65
193245  -9 2590  IV3MJJ HB9EFK +01
193300 -22 1883  HB9EFK IV3MJJ R+29
193315  -8 2590  IV3MJJ HB9EFK RR73
193330 -21 1882  HB9EFK IV3MJJ 73
201815  -6 2509  5Z4VJ IV3MJJ -06 (x2)
201930 -11 2509  CR7BUJ IV3MJJ +10
202030  -6 2509  <...> IV3MJJ +00 (x2)

10m

UTC    dB Audio  Message
183515 -15 1208  YO8WW IV3MJJ +28 (x2)
183730 -14 1207  CT3IQ IV3MJJ -08
183930 -23 1302  NP3YL IV3MJJ -03
184200 -22 1717  LY2BBF IV3MJJ -13
184530 -20 1996  IV3MJJ RX9WN R-21
173600  -8  888  IV3MJJ DK7UY 73

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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