ON4AOI — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

7,601 messages

Active dates

19 UTC dates

Estimated median S/N

0 dB

Estimated 10th-90th percentile

-9.2 to +12.4 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 85, moderate (-15 to -9 dB) 872, strong (≥ -8 dB) 6,644.

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 ON4AOI 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 ON4AOI

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

JO21 · 5,017 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,192 km (approx.)

Last such locator decoded

2026-09-12 06:35 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
190015 +17  717  JA2KFQ ON4AOI -17 (x2)
190115 +18  717  CQ JA ON4AOI JO21 (x8)
063400  +3  542  ON4AOI RZ7KR -10
063415 +13  680  EA2DYB ON4AOI -05 (x2)
063515 +14  679  CQ ON4AOI JO21 (x2)

UTC    dB Audio  Message
182700  -1 1260  CQ JA ON4AOI JO21 (x6)
183245  -8 1260  ON4AOI SP5WS KO12
183300  -3 1260  CQ JA ON4AOI JO21
183315  -5 1260  ON4AOI SP5WS KO12
183330  +1 1260  CQ JA ON4AOI JO21 (x4)
190030  +8 2505  JL4CVG ON4AOI -19 (x2)

UTC    dB Audio  Message
163915  -4 1332  CQ JA ON4AOI JO21 (x3)
164030  -8 1331  ON4AOI DG3YGA JO30
164045  +0 1332  G8GDS ON4AOI R-16 (x2)
164145 +10 1332  CQ JA ON4AOI JO21 (x9)

UTC    dB Audio  Message
080315 -22 1387  CQ ON4AOI JO21                        a1 (x2)
083830  -9 2197  ON4AOI DF7EF JO30 (x3)
090000 -15 1387  ON4AOI IU4PPL JN54 (x4)
093615  +0 2636  ON4AOI F1PBZ -18 (x2)
110230 -21 1464  CQ ON4AOI JO21 (x2)
112115  -8  534  ON4AOI PE9JAN JO22 (x2)

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.