RA3LJ — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

571 messages

Active dates

47 UTC dates

Estimated median S/N

-10.5 dB

Estimated 10th-90th percentile

-20.7 to 0 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 153, moderate (-15 to -9 dB) 184, strong (≥ -8 dB) 234.

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 RA3LJ 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 RA3LJ

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

KO64 · 69 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

915 km (approx.)

Last such locator decoded

2026-09-20 13:14 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
131330 -14 1640  CQ RA3LJ KO64 (x2)
131415  -9 1640  RA3LJ OK1STK JO60
131430 -21 1640  CQ RA3LJ KO64
131445  -9 1640  RA3LJ OK1STK JO60
133130  -2  720  YL3FW RA3LJ -19 (x3)
134430  -7  768  R2YW RA3LJ -01
134445  +3  768  RA3LJ R2YW R+20
134500  -7  767  R2YW RA3LJ RR73
110145  -9 1538  R2EA/P RA3LJ -01 (x2)
110230 -16 1538  RA3LJ R2EA/P 73
110815 -20 1139  RA3LJ UI4I R-26

UTC    dB Audio  Message
170230  -3 2008  RA2FU RA3LJ -20
170245 -10 2008  RA3LJ RA2FU R+03 (x2)
170400  +1 1159  R2DP RA3LJ -12 (x2)
170530  +9  504  RV4AS RA3LJ -20
170600  -1 2224  UA3YFL RA3LJ -12 (x2)
170730  +3  682  RA3LJ UA3IDQ R-09 (x2)
170900  +1 2118  UT7IA RA3LJ -19
171000  +3  553  RV4AS RA3LJ -19
171130  -1 2118  UT7IA RA3LJ -20 (x2)
172430 +10 1045  R4OF RA3LJ -19

UTC    dB Audio  Message
074330 -17 1463  RA3LJ RL1B RR73
170230 -22 1489  KB2PIW RA3LJ -05 (x2)
171300 -19 1856  RA3LJ R6FMK 73
171345 -15 1190  UA3ZQN RA3LJ -07
171430  -1 1190  RA3LJ UA3ZQN R-18
082100 -24 1893  RA3LJ LZ2CP R-03
100730 -21 1872  RA3LJ RN6MA R-16 (x2)
072330 -14 2092  RA3LJ RT6Z 73
072600  -9 2250  RA3LJ UA6NT R-01 (x2)
083815  -7  298  RA3LJ DL8CN JO31 (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.