DK4TM — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

11 messages

Active dates

5 UTC dates

Estimated median S/N

-22 dB

S/N percentile sample

Too small

Recurring-pattern threshold

Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 2, strong (≥ -8 dB) 2.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with DK4TM 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 DK4TM

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

JO40 · 6 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

911 km (approx.)

Last such locator decoded

2026-09-21 13:59 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
140030  -9 2668  DK4TM DK1XAM JO42
140100  +3  931  DK4TM DL6UM JO60 (x2)
140130 -14 2433  DK4TM DK1XAM JO42
140200  +5  931  DK4TM DL6UM R+09
140200 -15 2434  DK4TM DK1XAM JO42
140230  +2  916  DK4TM DL6UM 73
140230 -17 2433  DK4TM DK1XAM +01 (x2)
140315 -24 1484  DK1XAM DK4TM 73
150000 -14 1449  DK4TM G3XWH IO94 (x3)
150200 -20 1449  DK4TM PD0LH JO22 (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.