RU5D — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

262 messages

Active dates

5 UTC dates

Estimated median S/N

-5 dB

Estimated 10th-90th percentile

-13 to +5 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 77, strong (≥ -8 dB) 177.

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 RU5D 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 RU5D

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

KO84 · 82 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,150 km (approx.)

Last such locator decoded

2026-07-21 18:47 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
182115 -10  626  CQ RU5D KO84
182130  -8 2642  RU5D RL3T LO16
182145 -14  644  RL3T RU5D -09
182200  -5 2642  RU5D RL3T R-20
182215  -8  644  RL3T RU5D RR73
182230  -5 2642  RU5D RL3T 73 (x2)
173030 -15 1937  RU5D RD5D KO95
173030  -7  937  RU5D R6DZR KN84
173100 -13 1937  RU5D RD5D KO95
173100  -6  937  RU5D R6DZR KN84
173130 -13 1937  RU5D RD5D KO95
142830  -9  903  RU5D UA3GJM KO92 (x3)

UTC    dB Audio  Message
192900  -4  845  <R6DOB/7> RU5D KO84 (x3)
193045  +2 2806  RU5D <...> -11
193100  -7 1016  <R6DOB/7> RU5D R-10
193115  -2 2686  RU5D RR73; R6OE <...> +00
193945  -5  923  <...> RU5D KO84 (x2)
194245  -7 1011  <RO2E/M> RU5D KO84 (x5)
184700 -20 1991  UD8S RU5D KO84 (x2)

UTC    dB Audio  Message
092315 -15 2534  <...> RU5D KO84

UTC    dB Audio  Message
062700 -20 1197  RU5D UA3ARC 73
062815 -17  851  CQ RU5D KO84 (x2)
073700 -24 1530  RU5D RG7A R-12
085130  -9 2676  RU5D RD7LC -19 (x2)
090230 -11  769  RU5D YO4NT RR73
090230  -4 2822  RU5D RC6OX KN88 (x2)
090630  -2 2847  RU5D RZ6L R-15
055915 -11  912  RU5D RD7LO LN06
063130 -17 1003  CQ RU5D KO84
070145 -16 1874  RU5D RU7C KN95 (x3)

UTC    dB Audio  Message
184545 +10  705  RN3OX RU5D 73
184615  +4  705  RA3RDN RU5D +08 (x2)
184700  +4 1984  RU5D RA3RDN R+02
184715 +13  705  RA3RDN RU5D RR73
184730  +0 1984  RU5D RA3RDN 73
184745  +8  705  R9FAK RU5D -02 (x2)
184830  -7  890  RU5D RC6OZ KN98
184830 -10 1753  RU5D R9FAK 73
184845 +12  705  RC6OZ RU5D -01
184900  -3  890  RU5D RC6OZ R+02
184915  +6  705  RC6OZ RU5D RR73
184930  -6  890  RU5D RC6OZ 73
184945 +12  706  R9DZ RU5D -04

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.