JH3CUL — reception at SO8OO

Observed FT8 message patterns

Attributed sample

208 messages

Active dates

9 UTC dates

Estimated median S/N

-11.5 dB

Estimated 10th-90th percentile

-18 to -2 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 65, moderate (-15 to -9 dB) 57, strong (≥ -8 dB) 86.

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 JH3CUL 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 JH3CUL

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

PM74 · 91 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

8,565 km (approx.)

Last such locator decoded

2026-11-06 07:41 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
083630 -18 2136  F5PON JH3CUL 73
073800  -9  717  JH3CUL 6W/IK2HKT -20
073845 -10  340  <...> JH3CUL PM74 (x2)
074000  -8  717  JH3CUL 6W/IK2HKT -17
074015 -10  340  <...> JH3CUL PM74
074030  -8  717  JH3CUL 6W/IK2HKT -15 (x2)
074115  -8  340  <...> JH3CUL PM74
074130  -7  717  JH3CUL 6W/IK2HKT -16
074145  -8  339  <...> JH3CUL R-22
074200  -6  717  JH3CUL RR73; BG0KE <...> -08
074215  -8  339  <...> JH3CUL R-22 (x3)

UTC    dB Audio  Message
220830  +5  238  JH3CUL IW9HPG JM78 (x3)
221000  +1  747  JH3CUL IU5SHJ JN53 (x4)
221215 -19 2284  JH3CUL TF4M +00 (x2)
221415 -17 1491  JH3CUL EG46PPA -16
221615 -20 1291  JH3CUL R4ADJ -11 (x5)

UTC    dB Audio  Message
142245  -5 2741  JH3CUL DC5PPM JN59 (x2)

UTC    dB Audio  Message
153015  +5 2406  JH3CUL RA3DA -12 (x2)

UTC    dB Audio  Message
164930  +6 2118  JH3CUL YO4NT -17 (x2)
175745 +16 2812  JH3CUL DL8OH -17 (x2)

UTC    dB Audio  Message
150215  -1 1527  JH3CUL CT7AUT R-11
150230 -11  614  CT7AUT JH3CUL -16
150245  -4 1527  JH3CUL CT7AUT R-05 (x2)
150515  -8 2508  JH3CUL M9OHM -21
150530  -8  614  M9OHM JH3CUL R-21
150545  -5 2508  JH3CUL M9OHM RR73
150545  -3 1689  <JH3CUL> AO90A
154845  -9 1091  EA7KLL JH3CUL PM74 (x2)
155330  -6 1140  JH3CUL EA5JLB -19 (x2)
155445 -12 1091  EA7KLL JH3CUL PM74
155515  -9 1091  EA5JLB JH3CUL R-17 (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.