KM4KDF — reception at SO8OO

Observed FT8 message patterns

Attributed sample

14 messages

Active dates

5 UTC dates

Estimated median S/N

-15 dB

S/N percentile sample

Too small

Recurring-pattern threshold

Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 2, strong (≥ -8 dB) 6.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with KM4KDF 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 KM4KDF

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

FM07 · 2 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

7,591 km (approx.)

Last such locator decoded

2026-08-28 22:01 UTC

Other locator fields attributed to this token: FM25 (1).

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
035015 -15 2240  KM4KDF KB9ZM EM57 (x3)
035715  +2 2069  KM4KDF IW1DQS JN35
035715  -9 2263  KM4KDF F4NGK IN95
035745  -4 2069  KM4KDF IW1DQS JN35
035745  -8 2263  KM4KDF F4NGK IN95 (x2)
040545 -19 1996  KM4KDF G0LKL IO92 (x3)
041345  -5 2695  KM4KDF G0RIF IO92
041415 -12 1962  KM4KDF M7ECR JO01
041715  -8 2546  KM4KDF G0RIF R-14 (x2)

UTC    dB Audio  Message
050000  -4 2130  KM4KDF LZ3BS -19
050130 -24 2084  KM4KDF HB9TIH 73
042945 -13  907  KM4KDF TI5RR 73
032430  -3 2570  KM4KDF A99AA R-20 (x5)
032730 -11 2293  KM4KDF RK4FF -07 (x2)
032845 -19 2294  RK4FF KM4KDF +00
033400  -2  952  KM4KDF UB3GER R-12
034200 -21 1627  KM4KDF RX9ABI MO05
220045  -7 2559  VA7GEM KM4KDF FM07 (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.