DJ1TU — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

4,846 messages

Active dates

77 UTC dates

Estimated median S/N

-9 dB

Estimated 10th-90th percentile

-18.2 to +2 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1,024, moderate (-15 to -9 dB) 1,547, strong (≥ -8 dB) 2,275.

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 DJ1TU 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 DJ1TU

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

JN48 · 3,400 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

941 km (approx.)

Last such locator decoded

2026-09-07 20:22 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
194845 -20 2047  DJ1TU EG1PDA RR73 (x2)
201700  -7 1911  EG1PDA DJ1TU JN48 (x3)
201845 -10  866  DJ1TU DL3KR +06
201900  -4 1910  DL3KR DJ1TU R-09
201915  -6  866  DJ1TU DL3KR RR73
201930  -4 1910  DL3KR DJ1TU 73
201945 -10  866  DJ1TU DL3KR 73
202030  -4 1910  EA7AKE DJ1TU R-11 (x2)
202200  -8 1909  G0IOW DJ1TU JN48 (x3)

UTC    dB Audio  Message
135730 -16 2357  DL7UKM DJ1TU RR73
135745  -1 1190  DJ1TU DL7UKM 73
135915 -14 2356  OZ8MW/P DJ1TU JN48 (x4)
140330  -8 2357  PA6FBV DJ1TU R-08 (x2)
140545 -14 2356  OZ8MW/P DJ1TU JN48 (x2)
141030 -10 2356  SP7SZJ DJ1TU JN48
141045  +0 1023  DJ1TU SP7SZJ +00
141100  -8 2357  SP7SZJ DJ1TU R+01
141115  +3 1023  DJ1TU SP7SZJ RR73
141130  -5 2357  SP7SZJ DJ1TU 73

UTC    dB Audio  Message
133915 -14 2253  PA5FER DJ1TU JN48
134130 -18 1623  DJ1TU MW7HZQ -16
134145 -14 2253  MW7HZQ DJ1TU R-16
134500  +2  587  DJ1TU M9SGT +07 (x2)
150615  -6 1689  DJ1TU F5OYA/P -01 (x2)
162530 -22 1445  RG6ON DJ1TU JN48 (x3)
182600  -6 1733  DJ1TU IK4PLU -06 (x3)
191515  -1 2089  DJ1TU M0ITJ +11 (x2)

UTC    dB Audio  Message
153745  -1  756  DJ1TU IQ8PC JN70 (x2)
154330 -16 1321  G3WW DJ1TU JN48 (x3)
154815 -14 1321  DO5TCK DJ1TU JN48
155100  +3 1357  DJ1TU DO5TCK -02 (x2)
155145 -20 1270  DO5TCK DJ1TU R+00
155200  +5 1358  DJ1TU DO5TCK RR73
155215 -21 1271  DO5TCK DJ1TU 73
160100 -17 1270  DO2SGW DJ1TU JN48 (x2)
165600 -14 1913  DJ1TU G8WVB +10
120845 -19 2280  CR5VP DJ1TU JN48

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.