IV3IUM — 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: JN65

Receiver-side FT8 activity involving IV3IUM, decoded by SO8OO in southeastern Poland. 613 FT8 messages attributed to this token as transmitter, on 80m, 20m, 10m, across 26 UTC dates in the available aggregate history. Observed between 2026-06-14 and 2026-10-25.

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 613 FT8 messages attributed to IV3IUM as the transmitting token by decoded message structure across 26 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (93%), followed by 10 m (7%) and 80 m (0%). Most decodes (87%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (71%); the estimated median was -5 dB.

Overview

613
Messages attributed
26
UTC dates decoded
78
Active 15-min windows
-5 dB
Estimated median S/N

Bands

80m · 1 20m · 572 10m · 40
First attributed message: 2026-06-14
Last attributed message: 2026-10-25 15:35 UTC

Observed FT8 message patterns

Attributed sample
613 messages
Active dates
26 UTC dates
Estimated median S/N
-5 dB
Estimated 10th-90th percentile
-14 to +2 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 49, moderate (-15 to -9 dB) 130, strong (≥ -8 dB) 434.

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 IV3IUM 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 IV3IUM

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 · 368 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
821 km (approx.)
Last such locator decoded
2026-10-25 15:35 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 UTCBandIV3IUM S/NCounterpartCounterpart S/NMsgsCapture
08-30 15:32 20m - / -5 RA6HN +11 / - 5 ✓ Closing fragment
08-25 13:32 20m - / -16 R4HNT -10 / - 2 Partial capture
08-21 19:11 20m +10 / - R4FBJ - / - 4 Partial capture
08-21 19:09 20m +8 / - RL3AM - / +3 2 ✓ Closing fragment
08-21 19:06 20m +6 / - R4FBJ - / - 5 Partial capture
08-21 19:05 20m +9 / - RL3AM - / - 3 Partial capture
08-21 18:56 20m +6 / - RD0L - / -2 5 ✓ Closing fragment
08-17 13:31 10m -9 / - RC3LD - / -2 5 ✓ Closing fragment
08-17 13:29 10m -8 / - RA3ZH - / - 2 Partial capture
08-17 13:28 10m -4 / - UB3BGR - / - 2 Partial capture
08-17 13:27 10m 0 / - UA4CPM - / - 2 Partial capture
08-17 13:08 10m - / -14 RA7Z -16 / - 2 ✓ Closing fragment
08-16 19:04 20m +3 / - R3ND - / - 3 Partial capture
08-16 18:54 20m +2 / - R1BRY - / -8 4 ✓ Closing fragment
08-16 18:52 20m - / +6 <...> -10 / - 2 Partial capture
08-16 18:50 20m +1 / - DL1CBS/P - / -2 5 Partial capture
08-16 18:32 20m 0 / - RU3KA - / +4 5 ✓ Closing fragment
08-16 15:02 20m -6 / - RA9UU - / - 2 Partial capture
08-16 14:59 20m -2 / - RA0LMV - / - 3 Partial capture
08-16 14:57 20m -4 / - <...> - / - 2 Partial capture
08-14 14:01 20m -12 / -6 R8CC -15 / - 3 ✓ Closing observed
08-14 13:55 20m -15 / - R2UZ/P - / -4 3 ✓ Closing fragment
08-14 13:54 20m -10 / - RC3LD - / - 2 Partial capture
08-14 13:52 20m -9 / - RA3PGR - / 0 3 ✓ Closing fragment
08-14 13:46 20m -3 / - UA0SFM - / - 6 Partial capture
08-14 13:42 20m -4 / - RC3LD - / - 5 Partial capture
08-14 13:41 20m -6 / - R3SE - / -19 2 ✓ Closing fragment
08-13 19:10 20m +2 / - UA9UFJ - / - 6 Partial capture
08-13 19:04 20m -2 / - UA3VVA - / +5 5 ✓ Closing fragment
08-13 19:01 20m -13 / - R1BPB - / - 2 Partial capture
08-13 18:50 20m -15 / -8 ON1JP -19 / - 4 ✓ Closing observed
08-13 18:47 20m -5 / - RU3NCW - / +2 6 ✓ Closing fragment
08-13 18:40 20m -4 / - UA7XA - / -11 4 ✓ Closing fragment
08-13 18:38 20m 0 / - UA3MRS - / -4 3 ✓ Closing fragment
08-13 18:18 20m -3 / - UA1PBD - / -4 6 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
153515 -21 1503  UD8D IV3IUM JN65
10m 
UTC    dB Audio  Message
130900 -17 2246  IV3IUM RA7Z RR73
132730  +1 2245  UA4CPM IV3IUM JN65 (x2)
132830  -2 2245  UB3BGR IV3IUM JN65 (x2)
132930  -8 2245  RA3ZH IV3IUM JN65 (x2)
133130  +0 2245  RC3LD IV3IUM JN65 (x5)
133745 -15 1086  IV3IUM RA6ALD -07
142145 -15 2308  IV3IUM RA3WEO RR73
125700  -2 1410  IV3IUM R8DX RR73
20m 
UTC    dB Audio  Message
190830  +3 2227  R4FBJ IV3IUM JN65
190900  +6 2227  RL3AM IV3IUM R+03 (x2)
191100  +6 2227  R4FBJ IV3IUM JN65 (x4)
133200 -11 1734  IV3IUM R4HNT -16 (x2)
153230  +9  530  IV3IUM RA6HN -05 (x5)
155100 -20 2228  UB3BDB IV3IUM 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.

CW

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

Explore CW reception at SO8OO

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