OK4YL — reception at SO8OO

Observed FT8 message patterns

Attributed sample

1,169 messages

Active dates

36 UTC dates

Estimated median S/N

+20 dB

Estimated 10th-90th percentile

+1.8 to +27 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 26, strong (≥ -8 dB) 1,138.

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 OK4YL 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 OK4YL

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

JN99 · 828 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

206 km (approx.)

Last such locator decoded

2026-10-17 17:04 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
165715 +12 2904  H49A OK4YL JN99 (x14)
182700 +24 2738  JE6WOQ OK4YL R-22

UTC    dB Audio  Message
183530  -7 2875  OK4YL R6DJR +01
185245  +0 2913  CQ DX OK4YL JN99 (x2)
185400  -8 2912  OK4YL M6DPS R+02
185445  +2 2911  M6DPS OK4YL -22 (x2)
185600  -7 2912  OK4YL M6DPS 73
185700  -4 2909  7Z1OO OK4YL JN99 (x2)
185830  +1 2909  BG5JKZ OK4YL -23 (x2)
045600 -12  840  OK4YL HJ6UMR -17 (x3)
195045  -5 2847  PE1BOL OK4YL RR73

UTC    dB Audio  Message
173915 +14 2909  H49A OK4YL JN99 (x9)
174615 +11 2966  UK8FF OK4YL JN99 (x6)

UTC    dB Audio  Message
200445 +22 2785  CQ DX OK4YL JN99 (x2)
200630 +24 2785  HS0ZOY OK4YL JN99 (x2)
200930 +23 2903  CQ DX OK4YL JN99 (x2)
201015  -4 2903  OK4YL MW7GQB IO81
201030 +23 2902  CQ DX OK4YL JN99
201045  +3 2903  OK4YL MW7GQB IO81
201100 +23 2902  MW7GQB OK4YL -21
201115  +2 2901  OK4YL MW7GQB R+04
201130 +24 2902  MW7GQB OK4YL RR73
201145  +3 2901  OK4YL MW7GQB 73
201230 +18 2901  4Z5AV OK4YL RR73
201330 +17 2902  JR6CIJ OK4YL +01

UTC    dB Audio  Message
073600 -20 1771  OK4YL EX7CQ +16

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.