R3KJF — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

1,981 messages

Active dates

40 UTC dates

Estimated median S/N

-6 dB

Estimated 10th-90th percentile

-17 to +4 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 276, moderate (-15 to -9 dB) 517, strong (≥ -8 dB) 1,188.

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 R3KJF 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 R3KJF

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

KO91 · 1,010 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,221 km (approx.)

Last such locator decoded

2026-09-21 16:14 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
161230 +16 1510  R3KJF YO9IJP -02
161245  +5  982  YO9IJP R3KJF R-01 (x2)
161345  +4  982  RD0F R3KJF KO91
161400 +15 1510  R3KJF YO9IJP RR73
161415  +8  982  YO9IJP R3KJF 73
161445  +7  982  R0AL R3KJF KO91
161530 -11 1777  R3KJF R0AL -01
161545  +5  982  RD0F R3KJF 73
161600 +23 2859  R3KJF UA3QNA +01
161615  -2  982  R0AL R3KJF R-05 (x2)
161715  +2  982  UA3QNA R3KJF R+01
161730 +22 2858  R3KJF UA3QNA RR73
161745  -1  982  UA3QNA R3KJF 73

UTC    dB Audio  Message
165045  +5 2294  EU1AFX R3KJF KO91
165130  -8 1247  R3KJF EU1AFX -03
165145  +2 2295  EU1AFX R3KJF R-02
165200  +1 1247  R3KJF EU1AFX -03
165215  +5 2295  EU1AFX R3KJF R-02
165230  +3 1247  R3KJF EU1AFX RR73
165245  +1 2294  EU1AFX R3KJF 73
162545 -24  975  CQ R3KJF KO91 (x2)
162715 -21  975  RI1FJZ R3KJF KO91 (x2)
162815 -11  958  R3CE R3KJF KO91
162845  -7  958  CQ R3KJF KO91
162915 -16  958  R3CE R3KJF R+00 (x2)

UTC    dB Audio  Message
090300  +6 2212  HA5MG/MM R3KJF KO91
090330  +2 2212  <II4KEMP> R3KJF KO91
091400  +7 2211  M9KJY R3KJF KO91 (x2)
111545 -13 2148  OZ7BFC R3KJF 73
111615 -12 2148  OR5T R3KJF KO91
111630  -1 1101  R3KJF OR5T -04 (x2)
112130  -2 2148  R3KJF RL3QGD KO91 (x3)
121230 -11 2147  R3KJF SP1ZMO JO73 (x4)

UTC    dB Audio  Message
095315 -11 1444  IV3IYL R3KJF KO91
095415 -13 1444  R3LCW R3KJF KO91 (x3)
095800 -14 1444  DO7RMS R3KJF KO91 (x2)
095930 -11 1443  RX3DQ R3KJF KO91
100100 -10 1443  DL1NEO R3KJF 73
100230 -13 1443  9A3AUH R3KJF R-10 (x2)
100400 -13 1443  PA1GLD R3KJF KO91 (x2)
100445 -19 1531  R3KJF PA1GLD -12
100500 -11 1443  PA1GLD R3KJF R-13 (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.