R3ICU — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

2,158 messages

Active dates

50 UTC dates

Estimated median S/N

-15 dB

Estimated 10th-90th percentile

-22 to -7 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1,052, moderate (-15 to -9 dB) 779, strong (≥ -8 dB) 327.

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 R3ICU 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 R3ICU

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

KO66 · 1,569 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,041 km (approx.)

Last such locator decoded

2026-09-06 18:19 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
181745  +6 2525  R3ICU RW3RN R-01 (x2)
181830  -8 1046  RX3AM R3ICU 73
181900  -9 1046  R1BRY R3ICU KO66
181915 -22 1957  R3ICU R1BRY -05
181930 -16 1046  R1BRY R3ICU R-09 (x2)
182015  +6 1385  R3ICU RO7A KN95
182030 -12 1046  RO7A R3ICU -02
182045  +8 1386  R3ICU RO7A R-16
182100  -8 1046  RO7A R3ICU RR73
182115  +5 1385  R3ICU RO7A 73
182515  -9 1374  R3ICU RX1AB -13 (x3)

UTC    dB Audio  Message
000330 -19 1695  CQ R3ICU KO66 (x2)
000415  -9 1488  R3ICU R1BLO KO59 (x3)
000530 -18 1695  CQ R3ICU KO66 (x3)
000715 -11  996  R3ICU DL7UKM JO62 (x2)
175600 -24 1589  CQ R3ICU KO66
175615  -6 2033  R3ICU RN3QTS KO90 (x3)
175900 -24 1494  CQ R3ICU KO66                         a1

UTC    dB Audio  Message
141645  -2  985  R3ICU SP3GHC R-12
141800 -16  985  CQ R3ICU KO66 (x3)
143430 -23 1446  UB1QAI R3ICU KO66
143530 -18 1447  R1BBG R3ICU KO66 (x4)
143800 -18 1346  CQ R3ICU KO66 (x2)
143930 -22 1346  R3TAW R3ICU -01
143945  -7  588  R3ICU R3TAW R-08 (x2)
144100 -19 1346  CQ R3ICU KO66

UTC    dB Audio  Message
173430  +0 1869  R3ICU RT4A -13 (x8)
175615  +0 1154  R3ICU F4ACR IN96
181545  -2 1984  R3ICU OE9DAI R-02 (x2)
153730 -12 1616  R3ICU CT1BFP IM59 (x3)
121745 -18 1786  R3ICU RA6MQ -17

UTC    dB Audio  Message
120200  -4 2582  R3ICU RX7O -07 (x2)
125830 -13 2508  R3ICU R6FFB LN14 (x3)
134315 -19 1683  R3ICU RA6ALF -15
091615  -5 1508  R3ICU SV2AEL KN10 (x3)
134730 -15 1508  R3ICU DL0ARN JO50 (x2)
130745 -24 1599  R3ICU F4HQL JN29
081845 -17 2290  R3ICU DM5KM -16 (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.