R3KAB — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

519 messages

Active dates

37 UTC dates

Estimated median S/N

-3.2 dB

Estimated 10th-90th percentile

-12 to +7 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 20, moderate (-15 to -9 dB) 101, strong (≥ -8 dB) 398.

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 R3KAB 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 R3KAB

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

LN09 · 90 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,378 km (approx.)

Last such locator decoded

2026-09-20 05:09 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
050145  -6  485  PD7LJ R3KAB RR73
050200  -7  485  R3KAB PD7LJ 73
050245  -1  485  IK0QDM R3KAB -07 (x2)
050445  -5  485  CQ R3KAB LN09 (x3)
051000 -10  427  E73X R3KAB -13
051015  -3  739  R3KAB E73X R-08 (x2)
051100 -11  518  E73X R3KAB RR73
051115  +0  739  R3KAB E73X 73
051330 -10 1796  R3KAB R6OAF 73
075545  +6 2527  R3KAB HG0NPJ R-17 (x2)

UTC    dB Audio  Message
031415  +0  645  CQ R3KAB LN09
031430 -11 1830  R3KAB ON1JP -17
031445  -5  645  R3BEZ R3KAB -14
031500 -16 1830  R3KAB ON1JP -17
031515  +2  645  R3BEZ R3KAB RR73
031530 -19 1830  R3KAB ON1JP -17 (x2)
032615  +2  382  R3KAB DO1ID R-10 (x2)
032800 -10  645  HB9CXZ R3KAB -20
032815  -1 2121  R3KAB HB9CXZ R-21 (x2)
032900  -9  645  HB9CXZ R3KAB RR73
032915  -2 2121  R3KAB HB9CXZ 73
041315 -13  644  EM70WWW R3KAB -16

UTC    dB Audio  Message
083830  -9  837  R3KAB F4MZI -14
083845  +3 1000  CQ R3KAB LN09
083900 -13  837  R3KAB F4MZI -14 (x2)
083945  +5 1121  CQ R3KAB LN09
084000 -12  837  R3KAB F4MZI -14
084015  +8 1121  TA3F R3KAB -22
084030  -5  837  R3KAB F4MZI -14
084045  -2 1121  TA3F R3KAB -20
084100  -8  837  R3KAB F4MZI -14
084115  +3 1120  TA3F R3KAB RR73
084130  -9  837  R3KAB F4MZI -14
084145  -6 1121  TA3F R3KAB RR73
093700  +0 1120  M7TPT R3KAB -21 (x2)

UTC    dB Audio  Message
132100 -11 1335  R3KAB <...> R-02
094545  +6 1173  R3KAB SV7BAY 73

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.