UB4FTI — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: LO23

Receiver-side FT8 activity involving UB4FTI, decoded by SO8OO in southeastern Poland. 26 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-09-08.

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 26 FT8 messages attributed to UB4FTI as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (73%), followed by 160 m (15%) and 40 m (12%). 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 (85%); the estimated median was +6 dB.

Overview

26
Messages attributed
5
UTC dates decoded
6
Active 15-min windows
+6 dB
Estimated median S/N

Bands

160m · 4 80m · 19 40m · 3
First attributed message: 2026-06-12
Last attributed message: 2026-09-08 18:30 UTC

Observed FT8 message patterns

Attributed sample
26 messages
Active dates
5 UTC dates
Estimated median S/N
+6 dB
Estimated 10th-90th percentile
-14 to +11 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 2, strong (≥ -8 dB) 22.

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 UB4FTI in decoded directed-looking exchanges:

Most frequent locator attributed to UB4FTI

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
LO23
SO8OO receiver locator
KN09VW
Locator-centre separation
1,639 km (approx.)
Last such locator decoded
2026-08-14 20:45 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 UTCBandUB4FTI S/NCounterpartCounterpart S/NMsgsCapture
09-08 18:29 80m - / - I1RJP +5 / - 3 Partial capture
09-08 18:29 80m +10 / +3 UB5MBA -2 / -6 4 ✓ Full exchange observed
09-08 18:28 80m - / -9 DL1DXX +4 / - 5 Partial capture
09-08 18:28 80m +11 / -10 IZ0COC +14 / - 6 ✓ Closing observed
09-08 18:27 80m - / -4 S59A +10 / - 7 Partial capture
09-08 18:27 80m - / - 9A5E +8 / - 6 Partial capture
09-08 18:26 80m - / -2 DK7ZT -1 / - 5 Partial capture
09-08 18:26 80m +11 / 0 RD4AAK -15 / -1 3 Partial capture
09-08 18:25 80m +7 / -3 IK0HBN +13 / -14 7 ✓ Full exchange observed
09-08 18:24 80m +4 / - RM3TO -2 / +1 7 ✓ Full exchange observed
09-08 18:23 80m +5 / - R8AIJ - / -21 5 Partial capture
09-08 18:23 80m - / - UB5MBA -1 / - 2 Partial capture
08-14 20:45 80m +8 / - <...> - / -9 2 Partial capture
08-12 21:49 80m - / - IZ0AEZ +12 / - 2 Partial capture
08-12 21:45 80m - / - IZ0AEZ +2 / - 2 Partial capture
08-12 21:42 80m +8 / - <...> - / -8 3 Partial capture
06-27 19:03 40m - / -4 UA4HBJ -18 / - 2 Partial capture
06-27 19:01 40m +6 / - DK7ZT - / -10 2 ✓ Closing fragment
06-27 06:09 20m - / -4 YO4NF +6 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
182945 -13 1592  UB4FTI IU3VSZ JN55
182945  +3  309  UB4FTI I1RJP JN45
182945  -1 2313  UB4FTI DL1DXX -08
182945  +9 2134  UB4FTI 9A5E JN75
182945 +11 2520  UB4FTI 9A4ZM JN86
183015  +9  840  UB4FTI S59A -03
183015 +18 2639  UB4FTI IZ0COC R-10
183015  +4  309  UB4FTI I1RJP JN45
183015  +4 2313  UB4FTI DL1DXX -08
183030 +11 2524  IZ0COC UB4FTI RR73
183045 +12  841  UB4FTI S59A -03
183045 +16 2639  UB4FTI IZ0COC 73
183045  +8  309  UB4FTI I1RJP JN45
183045  +3 2312  UB4FTI DL1DXX -07
183115 +14  841  UB4FTI S59A -03
40m 
UTC    dB Audio  Message
190015  -1 2841  UA8L/M UB4FTI -17
190145  +5 2839  DK7ZT UB4FTI R-10 (x2)
190300 -17 1200  UB4FTI UA4HBJ -04 (x2)
20m 
UTC    dB Audio  Message
060900  +8 2966  UB4FTI YO4NF -04 (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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