IV3DMJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN66

Receiver-side FT8 activity involving IV3DMJ, decoded by SO8OO in southeastern Poland. 123 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-17 and 2026-08-12.

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 123 FT8 messages attributed to IV3DMJ as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (64%), followed by 20 m (36%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (63%); the estimated median was -4 dB.

Overview

123
Messages attributed
4
UTC dates decoded
13
Active 15-min windows
-4 dB
Estimated median S/N

Bands

40m · 79 20m · 44
First attributed message: 2026-06-17
Last attributed message: 2026-08-12 18:58 UTC

Observed FT8 message patterns

Attributed sample
123 messages
Active dates
4 UTC dates
Estimated median S/N
-4 dB
Estimated 10th-90th percentile
-18 to +3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 29, strong (≥ -8 dB) 77.

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 IV3DMJ in decoded directed-looking exchanges:

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 IV3DMJ

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 · 53 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
755 km (approx.)
Last such locator decoded
2026-08-12 18:57 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 UTCBandIV3DMJ S/NCounterpartCounterpart S/NMsgsCapture
08-12 18:57 20m +2 / - A93MO - / 0 2 Partial capture
08-12 18:53 20m -3 / - 9J2FI - / - 3 Partial capture
08-12 18:19 20m -19 / - BU2FW - / -19 3 ✓ Closing fragment
08-11 19:38 20m -24 / - UR5WCS - / 0 2 ✓ Closing fragment
08-11 19:32 20m -13 / -3 PE1MHY 0 / -4 4 ✓ Full exchange observed
08-11 19:30 20m -14 / - HS0ZOY - / - 2 ✓ Closing fragment
08-11 19:01 20m -14 / - DL5DQZ - / -14 2 ✓ Closing fragment
08-11 18:59 20m -10 / +1 HB9AKE -17 / -3 4 ✓ Full exchange observed
08-11 18:56 20m -13 / - A41ZZ - / -14 3 ✓ Closing fragment
08-11 18:54 20m -10 / - <...> - / -20 2 Partial capture
08-11 18:47 20m -19 / - TT1GD - / -7 2 Partial capture
06-24 19:53 40m -10 / - F4MGP - / -5 2 ✓ Closing fragment
06-24 19:50 40m -8 / +4 ER1BF -11 / -6 6 ✓ Full exchange observed
06-24 19:45 40m -2 / 0 IQ4JO +6 / - 5 ✓ Full exchange observed
06-24 19:44 40m -2 / - F6FHZ - / -18 2 ✓ Closing fragment
06-24 19:40 40m -3 / - PD0LH - / -8 2 ✓ Closing fragment
06-24 19:39 40m 0 / -2 F1PBZ -6 / -11 3 ✓ Full exchange observed
06-24 19:36 20m -11 / - KF0YOB - / - 2 Partial capture
06-24 19:18 20m - / - F4BYA -10 / - 3 Partial capture
06-24 19:07 20m - / -4 EW8DU -12 / - 7 ✓ Closing fragment
06-24 19:07 20m - / - DB1EF -15 / - 2 Partial capture
06-24 19:02 20m - / -12 F1PBZ -5 / - 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
194130 -17 1931  G4DBW IV3DMJ RR73
194200 -13 1931  M7DJX IV3DMJ R-13
194300 -13 1931  BG7BVI IV3DMJ R-21
181630 -16 1931  A61CK IV3DMJ JN66
181930 -18 1931  BU2FW IV3DMJ JN66 (x3)
182415 -12 1931  5B4ARQ IV3DMJ R-04
182815  -6 1720  CQ IV3DMJ JN66 (x2)
185300  -6 1317  9J2FI IV3DMJ JN66 (x3)
185700  -3 2778  A93MO IV3DMJ JN66 (x2)
40m 
UTC    dB Audio  Message
194645  +6 2732  IV3DMJ IQ4JO 73
194900  -6 1470  CQ IV3DMJ JN66 (x2)
194945 -21 1662  IV3DMJ R2FBW JO94
195045 -10 1558  IV3DMJ ER1BF KN47
195100  -7 1471  ER1BF IV3DMJ -06 (x2)
195145 -10 1557  IV3DMJ ER1BF R+04
195200 -10 1470  ER1BF IV3DMJ RR73
195215 -13 1558  IV3DMJ ER1BF 73
195230  -8 1471  CQ IV3DMJ JN66
195300 -10 1470  F4MGP IV3DMJ -05 (x2)
195500 -11 1471  CQ IV3DMJ JN66                        a1 (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