UB4Y — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

228 messages

Active dates

25 UTC dates

Estimated median S/N

-16 dB

Estimated 10th-90th percentile

-23 to -11 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 130, moderate (-15 to -9 dB) 89, strong (≥ -8 dB) 9.

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 UB4Y 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 UB4Y

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

LO36 · 175 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,817 km (approx.)

Last such locator decoded

2026-09-18 20:51 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
165230 -10  372  UB4Y RZ5D KN75
165300  -8 1138  UB4Y R9OOF -13
152730  -9 1463  R1QF/P UB4Y LO36 (x5)
153215 -18 2231  UB4Y R1QF/P RR73
153245  -1 1647  UB4Y HG8LXL KN06 (x4)
210115 -10 2148  UB4Y UA3RFT LO02 (x2)
141930 -18 1706  R9FGJ UB4Y -17

UTC    dB Audio  Message
195715 -24 1666  VE3GLN UB4Y LO36
200500 -23 1666  EI5GSB UB4Y LO36
200945 -15 1666  VE3GLN UB4Y LO36 (x9)
204915 -16 1666  Z31PM UB4Y LO36 (x4)

UTC    dB Audio  Message
210615 -19 1273  RI1FJL UB4Y LO36 (x12)
164645  -6 1523  UB3ADO/P UB4Y LO36 (x2)
164800 -15 1342  UB4Y UB3ADO/P -06

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.