YL3CW — reception at SO8OO

Observed FT8 message patterns

Attributed sample

5,340 messages

Active dates

89 UTC dates

Estimated median S/N

-1 dB

Estimated 10th-90th percentile

-11 to +8.8 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 175, moderate (-15 to -9 dB) 734, strong (≥ -8 dB) 4,431.

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 YL3CW 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 YL3CW

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

KO36 · 3,570 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

807 km (approx.)

Last such locator decoded

2026-10-22 16:27 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
164330  -9 2402  YL3CW G6ZRV JO02
164345 -13  846  YL3CW PB0ACM R-07 (x2)
164715 -15 2401  YL3CW IK1EZX JN44 (x7)
165445 -17 2168  YL3CW DM4WRI JO33 (x3)
165715  -9 2401  YL3CW G3RKF IO83 (x2)

UTC    dB Audio  Message
190930  +7  565  YL3CW DK8HC JO42 (x2)
191145  +4 2284  VK3BDX YL3CW RR73
191230  +0 2284  YL3CW DH0BRO JO62 (x4)
191500  -8  265  YL3CW R2SBI KO93
191545  +5 2284  VK3AMP YL3CW RR73
191600 -24 1156  YL3CW VK3AMP 73
191815  +4 2284  CQ YL3CW KO36 (x3)
192100  -5 1927  YL3CW SQ1RTU JO73 (x2)

UTC    dB Audio  Message
190015  +6 2282  CQ YL3CW KO36 (x7)
190345 +12 2282  SK3GA YL3CW -14 (x2)
190445 +12 2282  CQ YL3CW KO36 (x2)
190530  -7 1859  YL3CW SQ1RTU JO73
190545  +5 2283  CQ YL3CW KO36
190600 -11 1859  YL3CW SQ1RTU JO73
190700 -19 2282  YL3CW M0IIO IO90

UTC    dB Audio  Message
173500 -12 2163  YL3CW DL4YDR R+00
173515 -13 2164  DL4YDR YL3CW RR73
173530 -12 2163  YL3CW DL4YDR 73
174245 -12 2164  CQ YL3CW KO36 (x7)
174600  -3 1359  YL3CW LY2HM KO15 (x3)
181830 -19 1597  YL3CW OH3KRH KP53 (x2)

UTC    dB Audio  Message
065830 -16 2437  YL3CW DN9OPA JN38
062245 -18 1757  YL3CW RX6LG -05 (x2)
065100 -16 2285  YL3CW R3DMS -19 (x3)
084630 -13 1458  YL3CW UA3VVA +02 (x2)
084930 -18 1099  YL3CW IK5EEA 73
081545 -12 2540  YL3CW F4IDN RR73
113700 -19 1623  YL3CW UR5EEW KN68 (x3)
074730  -9  579  YL3CW IK4JPP JN54 (x2)

UTC    dB Audio  Message
061745 -11 2382  CQ YL3CW KO36 (x2)
061830  +9 1862  YL3CW OS4K +10
061845 -10 2382  W0RTA YL3CW -20
061900  +7 1862  YL3CW OS4K +10 (x2)
062000 -17 2381  YL3CW VK3DIY QF22
062030  -8 3032  YL3CW K0IS EN41
062100  +3 1674  YL3CW ON1DGN -07
062115 -10 2382  ON1DGN YL3CW R-04
062130  +0 1674  YL3CW ON1DGN RR73
062345 -11 2382  CQ YL3CW KO36 (x3)
062615  -7 2382  RI1FJL YL3CW R+01

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.