JA6LCJ — reception at SO8OO

Observed FT8 message patterns

Attributed sample

352 messages

Active dates

32 UTC dates

Estimated median S/N

-13.6 dB

Estimated 10th-90th percentile

-20 to -6 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 121, moderate (-15 to -9 dB) 168, strong (≥ -8 dB) 63.

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 JA6LCJ 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 JA6LCJ

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

PM52 · 212 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

8,512 km (approx.)

Last such locator decoded

2026-11-05 20:23 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
202400 -12 1505  JA6LCJ IU4AOY JN54 (x2)
202430 -19 1751  JA6LCJ DL7ACN JN49
205730 -13 2216  JA6LCJ DK3ME JO50
210000 -14 1300  JA6LCJ SV1ENG -17 (x3)
210200  +4 2426  JA6LCJ DL8AKI JO51 (x5)
210500  +4 2691  JA6LCJ SP5UFK KO11
210500  +6 2426  JA6LCJ DL8AKI 73
210530  +0 2691  JA6LCJ SP5UFK KO11

UTC    dB Audio  Message
200515  -8 2571  JA6LCJ SV8DCY -20 (x3)
200915 -17 1901  JA6LCJ SV8QG KM39
201415  +2 2222  JA6LCJ SM0CXS -19 (x2)
201845  -4 2498  JA6LCJ LZ1ST -19 (x2)
202515 -13 1756  JA6LCJ SV8QG -10 (x3)
210845  +5  951  JA6LCJ OH6XX -15 (x2)
201230  -1 1821  JA6LCJ OH7XI -16 (x2)

UTC    dB Audio  Message
203245  -8 2828  JA6LCJ YO3GNF -13 (x4)
203430 -23 1276  JA6LCJ LZ73TRC -19
203445  -7 2828  JA6LCJ YO3GNF -13
205545 -12 2175  JA6LCJ 9A5ZAR JN75 (x3)
205830 -22 1917  JA6LCJ 7X2RF -14 (x2)
215200 -13 2357  JA6LCJ C31CT -15 (x4)

UTC    dB Audio  Message
074200 -19 2064  JA6LCJ M0TNX -16
075000 -10 1149  JA6LCJ ON6AA JO11 (x3)
055030  +4  489  JA6LCJ 4Z5NN -11 (x2)

UTC    dB Audio  Message
060215 -13  370  JA6LCJ HC2GRC -04

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.