R3DMS — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

2,784 messages

Active dates

85 UTC dates

Estimated median S/N

-7 dB

Estimated 10th-90th percentile

-18.5 to +3 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 512, moderate (-15 to -9 dB) 731, strong (≥ -8 dB) 1,541.

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 R3DMS 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 R3DMS

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 · 1,335 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,193 km (approx.)

Last such locator decoded

2026-10-06 17:45 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
171815  +4  785  RW4Z R3DMS R-04 (x3)
172430  -1  785  UA2FHZ R3DMS +03
172745  -1  785  R4HAI R3DMS KO85 (x2)
173015  -4  785  BG0FQU R3DMS KO85 (x7)
062645 -16 1369  R3DMS RN1TV -06 (x2)

UTC    dB Audio  Message
182230  -9  729  UA4FEN R3DMS R-06
182245 -15  729  R3DMS UA4FEN RR73
182300  -5  728  UA4FEN R3DMS 73
182700  +0 1162  R3DMS R3DCX -08 (x2)
173945  +9  564  R6HV R3DMS -07 (x3)
174130  -4  791  R3DMS R6HV R-03 (x2)
174345  +5  564  RA1QCX R3DMS RR73
174515  +5  564  9A3MA R3DMS KO85 (x2)
174600  +6 2171  R3DMS 9A3MA RR73
174615  +1  564  9A3MA R3DMS 73

UTC    dB Audio  Message
180415  -6 1626  R3DMS SM0NSJ JO79 (x3)

UTC    dB Audio  Message
125800 -18 2397  R3DMS JM1SZY -14 (x2)
125845 -14 1854  JM1SZY R3DMS 73
125915 -17 1853  CQ R3DMS KO85
125945 -17 1853  R6ADH R3DMS +02 (x2)
130045 -17 1853  BA3NZ R3DMS KO85 (x2)
131100 -11 1145  R3DMS EA7KLL -21 (x4)
131445  -3 1503  R3DMS LA8OOA -19 (x2)
132315 -14  807  R3DMS IW3FVQ RR73

UTC    dB Audio  Message
074115 -22 1950  R3DMS SV2AEL R-02
074130 -12 2284  SV2AEL R3DMS RR73
074230 -10 2284  RA3FH R3DMS RR73
074300 -18 2284  CQ R3DMS KO85                         a1
074330 -16 2284  RD7LC R3DMS R-09
074345 -24 1612  R3DMS RD7LC RR73
074400 -18 2284  RD7LC R3DMS R-09 (x2)
121500 -20 1780  R3DMS EA5KB RR73
063030 -24 1771  R3DMS LZ2CC R-02
063330 -13 1497  R3DMS DN9AD JO52 (x4)
092415 -14 2535  R3DMS S58N RR73

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.