DO1MDO — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

1,899 messages

Active dates

65 UTC dates

Estimated median S/N

-2 dB

Estimated 10th-90th percentile

-11 to +6 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 57, moderate (-15 to -9 dB) 261, strong (≥ -8 dB) 1,581.

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 DO1MDO 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 DO1MDO

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

JO50 · 1,270 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

770 km (approx.)

Last such locator decoded

2026-09-18 21:43 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
211830 -14 2005  SN40KZE DO1MDO JO50 (x2)
213030 -24 2005  GX3RAF/P DO1MDO JO50
213045 -20 2140  DO1MDO GX3RAF/P -13
213100 -10 2005  GX3RAF/P DO1MDO R-04
213115 -18 2140  DO1MDO GX3RAF/P RR73
213130 -15 2005  GX3RAF/P DO1MDO 73
213945 +11 2501  DO1MDO S51SLO +06
214000  -7 2005  S51SLO DO1MDO R+02
214015  +7 2501  DO1MDO S51SLO RR73
214030  -1 2005  S51SLO DO1MDO 73
214130 -13 2005  GX3RAF/P DO1MDO JO50 (x4)

UTC    dB Audio  Message
161900 -19 1808  LZ1ZF DO1MDO +10 (x2)
162045 -18 1807  YO3JAZ DO1MDO JO50 (x3)
162330 -11 1807  DO1MDO F4DWY -16 (x2)
132445 -11  591  DO1MDO SV2CLJ 73
141845 -20 1813  II1NAP DO1MDO 73
142230 -21 1804  I2LAX DO1MDO JO50 (x2)
142800 -21 1811  F5SFT DO1MDO JO50
144345 -24 1806  EA1EV DO1MDO JO50
123130 -21 1753  DO1MDO Z30WWA -16
150145 -21 1938  DO1MDO IK6EUH -18

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.