YB4ECU — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

47 messages

Active dates

4 UTC dates

Estimated median S/N

-16 dB

Estimated 10th-90th percentile

-22 to -12 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 28, moderate (-15 to -9 dB) 19, strong (≥ -8 dB) 0.

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 YB4ECU in decoded directed-looking exchanges:

Most frequent locator attributed to YB4ECU

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

OI19 · 16 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

9,423 km (approx.)

Last such locator decoded

2026-08-28 15:04 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
152115  -9 1257  YB4ECU S52D JN76 (x4)

UTC    dB Audio  Message
150030 -19 1423  EV6Z YB4ECU -19 (x5)
150415 -15 1266  W7O YB4ECU RR73
150445 -15 1266  CQ YB4ECU OI19                        a1
150530  -3  920  YB4ECU RU3QR -09
150615 -16 1266  RU3QR YB4ECU 73
150630  -8  920  YB4ECU RU3QR -13
150700 -11 1480  YB4ECU UB4CJS -14
150700  -8  920  YB4ECU RU3QR -13
150730 -10 1480  YB4ECU UB4CJS -14 (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.