S53K — reception at SO8OO

Observed FT8 message patterns

Attributed sample

296 messages

Active dates

4 UTC dates

Estimated median S/N

-1 dB

Estimated 10th-90th percentile

-17 to +10 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 36, moderate (-15 to -9 dB) 64, strong (≥ -8 dB) 196.

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 S53K 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 S53K

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

JN75 · 126 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

708 km (approx.)

Last such locator decoded

2026-10-16 17:36 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
173000  -3 1699  R9CS/P S53K -19
173015  -5  517  S53K R3ZMM R-17
173015 -14 1101  <S53K> PA4AGO/J
173030  -9 1699  R9CS/P S53K -19
173045 -16 1101  S53K PA4AGO/J
173100 -13 1699  R9CS/P S53K -12
173200  -5 1699  CQ S53K JN75 (x9)

UTC    dB Audio  Message
002045  +2 2057  DO1ANB S53K -11
002100  +9  812  S53K ON4MAP R+11
002100 -21 1985  S53K K0MV DM79
002100 -17 1289  S53K DO1ANB JO31
002115  +0 2057  DO1ANB S53K -11
002130  +9  812  S53K ON4MAP R+11
002130 -16 1289  S53K DO1ANB JO31
002145  +3 2057  DO1ANB S53K -11
002200 -20 1985  S53K K0MV DM79
002215  +2 2057  F6FHZ S53K -19 (x3)
002345  +9 2057  DO1ANB S53K -15 (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.