RK9DO — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

396 messages

Active dates

24 UTC dates

Estimated median S/N

-17 dB

Estimated 10th-90th percentile

-23 to -9 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 239, moderate (-15 to -9 dB) 130, strong (≥ -8 dB) 27.

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 RK9DO 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 RK9DO

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

MO17 · 160 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

2,790 km (approx.)

Last such locator decoded

2026-09-26 19:49 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
193700 -11 2118  RK9DO R3ZMM KO90 (x4)
193830 +11 2343  RK9DO IK0HBN JN62 (x2)
193930 -16  966  RK9DO R3ZMM KO90
193930  +8 2343  RK9DO IK0HBN JN62
194000 -19  967  RK9DO R3ZMM KO90
194000 +12 2343  RK9DO IK0HBN JN62 (x3)
200100  -9 1207  RK9DO R5AV -20 (x3)

UTC    dB Audio  Message
194715 -21 1768  CQ RK9DO MO17
194800 +12  435  RK9DO DL9AJ JO52 (x3)
194915 -24 1769  R4HLO RK9DO RR73
194945 -22 1768  CQ RK9DO MO17
195000 +18  434  RK9DO DL9AJ JO52 (x2)
195130  +8  962  RK9DO ON6AA JO11 (x6)
195600  -3 1961  RK9DO RX3DQL KO95

UTC    dB Audio  Message
154515 -11 1770  RK9DO RD4AAK RR73
154700 -21 1130  CQ RK9DO MO17                         a1
155045  -5 1129  RK9DO LZ2SPD KN22 (x3)
135245 -12  525  RK9DO R6ZL +02 (x2)
135845 -16 1568  RK9DO R2PE RR73 (x3)
140445  +2 2598  RK9DO RY3D KO95
140545 -15  833  RK9DO UB4LDD -01 (x2)
143015 -10 2549  RK9DO RO7A KN95 (x2)

UTC    dB Audio  Message
040930 -22 1764  CQ RK9DO MO17
041045 -11 2208  RK9DO R3DFS 73
041445 -16 1991  RK9DO RQ9O NO15
042815  -4 1850  RK9DO SV5BYP KM46 (x5)
053345 -16 1174  RK9DO UA0SU R-04 (x2)
053715  +1 1049  RK9DO TA2EE KM69 (x4)
055445  -9 1048  R4FCE RK9DO -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.