9Y4D — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

206 messages

Active dates

21 UTC dates

Estimated median S/N

-13 dB

Estimated 10th-90th percentile

-21 to -6 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 70, moderate (-15 to -9 dB) 87, strong (≥ -8 dB) 49.

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 9Y4D 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 9Y4D

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

FK90 · 47 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

8,602 km (approx.)

Last such locator decoded

2026-10-06 02:12 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
042830 +29 3028  9Y4D SP3PLD JO72 (x3)
045200  +5 1414  9Y4D DG5CST JO60 (x12)

UTC    dB Audio  Message
222530  -8  538  9Y4D S55P -12
222530 -17 1315  9Y4D F4ENK JN06
222530 -11 1266  9Y4D DK2CC JO63
222600  -6 2508  9Y4D SP5DFG KO02
222600  -7  538  9Y4D S55P -12
222600 -14 1315  9Y4D F4ENK JN06
222600 -15 1265  9Y4D DK2CC JO63
222630  -4 2508  9Y4D SP5DFG KO02
222630 -12 1265  9Y4D DK2CC JO63
222700  +1 2508  9Y4D SP5DFG KO02 (x2)
030530  -6 1783  9Y4D SV1QEZ KM18
021215 -12  888  9T0MD 9Y4D FK90 (x3)

UTC    dB Audio  Message
015230 -14  727  9Y4D F5OYA/P JN13 (x15)

UTC    dB Audio  Message
231830  -8 1283  9Y4D G0JJL/P -10 (x2)
041415  -7  571  RI1FJZ 9Y4D FK90 (x5)
044200 -10 1542  9Y4D R6DYK -10
044215 -15  762  RI1FJZ 9Y4D FK90 (x3)
044400 -24 1919  9Y4D IK2VFW JN45
044415  -7  763  RI1FJZ 9Y4D R-21
044500  -6  763  9Y4D R6DYK -06 (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.