9A3J — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

183 messages

Active dates

9 UTC dates

Estimated median S/N

+5 dB

Estimated 10th-90th percentile

-5 to +11 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 9, strong (≥ -8 dB) 173.

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 9A3J 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 9A3J

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

JN86 · 139 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

521 km (approx.)

Last such locator decoded

2026-09-19 05:36 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
051300 +10 1317  HI8R 9A3J JN86 (x9)
053415  +7 1317  HI8DX 9A3J JN86 (x6)

UTC    dB Audio  Message
213800  +7 2136  CQ DX 9A3J JN86 (x5)
214030  +6 2136  BD1CAZ 9A3J -19 (x2)
193545  +0 1351  TN8GD 9A3J JN86 (x3)
193700  +3 1351  9A3J DJ0MAB JN49 (x2)
160830  +6 1351  VJ6X 9A3J JN86 (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.