DO4FBI — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

213 messages

Active dates

4 UTC dates

Estimated median S/N

-17 dB

Estimated 10th-90th percentile

-24 to -11 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 127, moderate (-15 to -9 dB) 79, strong (≥ -8 dB) 7.

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 DO4FBI 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 DO4FBI

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

JO31 · 157 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,054 km (approx.)

Last such locator decoded

2026-09-16 06:14 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.

Recent FT8 messages decoded at SO8OO

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

UTC    dB Audio  Message
054800 -23 1505  CQ DO4FBI JO31 (x5)
060230 -23 1504  G0JEI DO4FBI 73
060645 -16 1505  DO4FBI DO1FZL JO50 (x4)
061300 -23 1504  CQ DO4FBI JO31 (x3)
063345 -18 1505  DO4FBI DO1FZL JO50
065445  -2 2491  DO4FBI DL6EL JN57

UTC    dB Audio  Message
120015  +9  491  DO4FBI IK4LZH JN54 (x4)
120715 -19 1645  DO4FBI F5SZY IN96

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.