DO4ZT — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

429 messages

Active dates

4 UTC dates

Estimated median S/N

+1.2 dB

Estimated 10th-90th percentile

-6 to +12 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 20, strong (≥ -8 dB) 408.

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 DO4ZT 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 DO4ZT

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

JO61 · 214 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

642 km (approx.)

Last such locator decoded

2026-08-14 22:04 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
215315  +3 2423  CQ DO4ZT JO61 (x9)
220215  +5 2254  TM0BSM DO4ZT JO61
220230 -17 1656  DO4ZT TM0BSM +14
220245  +4 2254  TM0BSM DO4ZT R-03
220300 -21 1656  DO4ZT TM0BSM RR73
220315  +5 2254  TM0BSM DO4ZT 73
220445  +6 2254  EA1ARJ DO4ZT JO61

UTC    dB Audio  Message
205230 +14 2865  DO4ZT OZ6P +03 (x2)

UTC    dB Audio  Message
193515 -23 2027  DO4ZT R1AV R-17
195100 -19 2178  DO4ZT IK1MJK/P -07
163830  -6  997  DO4ZT R2EC -15 (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.