RA9J — reception at SO8OO

Observed FT8 message patterns

Attributed sample

2,127 messages

Active dates

22 UTC dates

Estimated median S/N

-11 dB

Estimated 10th-90th percentile

-15 to -4 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 192, moderate (-15 to -9 dB) 1,252, strong (≥ -8 dB) 683.

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 RA9J 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 RA9J

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

MP80 · 1,776 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

3,571 km (approx.)

Last such locator decoded

2026-09-19 09:26 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
161800 -22 1876  RA9J R6BH KN84
085345 -22 2215  S57TW RA9J RR73
085415 -22 2215  CQ RA9J MP80 (x7)
091745 -19 2215  DO1EA RA9J MP80
091845 -18 2216  OK2EA RA9J MP80 (x3)
092545 -20 2215  CQ RA9J MP80 (x2)

UTC    dB Audio  Message
141515 -10  640  RA9J R3TAW LO15 (x2)

UTC    dB Audio  Message
194300 -11  829  RA9J DF2SL JN58
194330 +13 2508  RA9J F4EGM JN29
194330  -4  830  RA9J DF2SL JN58 (x3)
194815 -11  830  F4EGM RA9J -17
194845  -9  831  CQ RA9J MP80 (x2)
195245 -12  830  R1BOH RA9J -13
195345 -10  830  CQ RA9J MP80 (x5)
195830 -11  413  RA9J DL3HN JN49

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.