DJ7XB — reception at SO8OO

Observed FT8 message patterns

Attributed sample

974 messages

Active dates

40 UTC dates

Estimated median S/N

-10 dB

Estimated 10th-90th percentile

-18 to +4 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 190, moderate (-15 to -9 dB) 364, strong (≥ -8 dB) 420.

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 DJ7XB 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 DJ7XB

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

JO52 · 715 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

803 km (approx.)

Last such locator decoded

2026-10-18 10:41 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
100245 -13 2572  IU3NOG DJ7XB JO52
103545 -18 2221  DJ7XB EI8GS RR73
095600 -11 2633  DJ7XB F6BTP JN09 (x9)
161715 -13 2565  DJ7XB EB8ARQ +05
142100 -21 1837  DJ7XB CX1TF -11
135015  +2 2208  DJ7XB CN8WK -01 (x2)

UTC    dB Audio  Message
161715  +5 2591  UA4FKT DJ7XB -13
161730  +6 2590  DJ7XB UA4FKT R-05
161745  +0 2591  UA4FKT DJ7XB RR73
161800  +7 2590  DJ7XB UA4FKT 73
161845  -1 2590  E74K DJ7XB JO52 (x2)
161930  -9 1639  DJ7XB E74K -10
161945  -3 2590  E74K DJ7XB R-12
162000  -9 1639  DJ7XB E74K RR73
162015  -2 2591  E74K DJ7XB 73
162115  -1 2590  CQ DJ7XB JO52
162130  +1 2590  DJ7XB R5AV -06
103930 -15 2268  PE1NAO DJ7XB JO52 (x3)

UTC    dB Audio  Message
114445  -5 1072  CQ DJ7XB JO52
114545  -5 1072  G3XAP DJ7XB -15 (x4)
114730 -15  230  DJ7XB G3XAP R-15
114745  -6 1072  G3XAP DJ7XB RR73
114800 -13  230  DJ7XB G3XAP 73
103900  +7 1025  OK2USB DJ7XB JO52
104115  +9  464  DJ7XB IK4LZH JN54 (x3)
104345  +6 2480  DJ7XB IQ4JO JN63 (x3)

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.