RZ3DJ — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

857 messages

Active dates

36 UTC dates

Estimated median S/N

+2 dB

Estimated 10th-90th percentile

-9 to +11.5 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, moderate (-15 to -9 dB) 79, strong (≥ -8 dB) 760.

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 RZ3DJ 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 RZ3DJ

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

KO85 · 511 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,193 km (approx.)

Last such locator decoded

2026-09-19 16:09 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
160330  +0 1539  R9HEP/P RZ3DJ KO85 (x7)
160815  +6  482  RA4ADF/P RZ3DJ KO85 (x5)
161030 -11 1326  RZ3DJ RA3TVW +14 (x2)
161115  -6 1327  RA3TVW RZ3DJ 73

UTC    dB Audio  Message
200745 -16 1198  RZ3DJ R6JAG RR73
200800  -8 1197  R6JAG RZ3DJ 73
200900 +17 2896  RA8AO RZ3DJ KO85 (x8)
201415  -4 1143  UA1TAT RZ3DJ KO85
201430 -10 1143  RZ3DJ UA1TAT +03
201445  -1 1143  UA1TAT RZ3DJ R+02
201500 -11 1144  RZ3DJ UA1TAT RR73
201515  -2 1143  UA1TAT RZ3DJ 73

UTC    dB Audio  Message
203830  +6 2914  LX2A RZ3DJ KO85 (x7)
204145  +1 1975  RZ3DJ LX2A -02
204200  +5 2914  LX2A RZ3DJ R-10
204215  -1 1975  RZ3DJ LX2A RR73
204230 +10 2914  LX2A RZ3DJ 73
204345 +10 2914  RI1FJZ RZ3DJ KO85 (x4)

UTC    dB Audio  Message
121345  -2  303  <...> RZ3DJ KO85 (x5)
181715 -24 1966  R6DBT RZ3DJ -23
181900 -15 2485  RZ3DJ R9AL -09 (x2)
181945 -24 1967  R6DBT RZ3DJ KO85
132245 -12  413  OZ5ESB/LH RZ3DJ KO85
071430  +2 1804  RZ3DJ F5RRS JN36 (x5)

UTC    dB Audio  Message
090045  +0  402  E70SZ RZ3DJ RR73
090145 -12  402  CQ RZ3DJ KO85 (x9)
091045 -10  401  RA7KW RZ3DJ -03
091100 -23 1868  RZ3DJ RA7KW R+01
175615  -5  372  OJ0JR RZ3DJ 73 (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.