R1CF — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

880 messages

Active dates

50 UTC dates

Estimated median S/N

-6.2 dB

Estimated 10th-90th percentile

-16 to +1 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 109, moderate (-15 to -9 dB) 217, strong (≥ -8 dB) 554.

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 R1CF 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 R1CF

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

KO59 · 498 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,214 km (approx.)

Last such locator decoded

2026-10-05 19:06 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
172700 -14 1003  R1CF F3CJ 73
172745  -6 2096  CQ R1CF KO59 (x4)
190700  -6 1126  R1CF M7HET IO91
190715  -5 1128  M7HET R1CF -13
190730  -2 1125  R1CF M7HET IO91
190745  -1 1128  M7HET R1CF -12
190800  -3 1125  R1CF M7HET R-12
190815  -1 1128  M7HET R1CF RR73 (x2)
190900  -7 1125  R1CF M7HET R-12
190915  -4 1128  M7HET R1CF RR73
190930  -5 1125  R1CF M7HET 73

UTC    dB Audio  Message
124600  -5  453  R1CF <...> -01
124745 -21 1596  <...> R1CF R-09
154800  -9 2038  R1CF BG7BVI -12 (x2)
045100  +0  510  R1CF R4RN -18
045745 -13  810  R1CF UA9UFJ RR73
123630 -16 2251  R6SBN R1CF 73
132115  +0 1050  R1CF UA3SCU -11
150530 -14  989  4X1YY R1CF KO59 (x4)
150900  -3  989  R1CF OR1A JO21 (x3)

UTC    dB Audio  Message
201830 -15 1900  R1CF DK7ZT +19 (x3)

UTC    dB Audio  Message
203645 -11 2169  R1CF SQ4KOU -18 (x2)
204045  +3 1822  R1CF SP6AXW -10 (x2)
204145 -11 1496  R1CF RA3WY KO81 (x4)
204330 -19 2063  CQ R1CF KO59
204345 -10 1496  R1CF RA3WY KO81
204400 -22 2062  CQ R1CF KO59                          a1
204415  -9 1496  R1CF RA3WY KO81
204445  -8  958  R1CF DL4RAQ JN58

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.