JR8BRK — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

12 messages

Active dates

4 UTC dates

Estimated median S/N

-14 dB

S/N percentile sample

Too small

Recurring-pattern threshold

Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 3.

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 JR8BRK 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 JR8BRK

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

QN02 · 5 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

8,163 km (approx.)

Last such locator decoded

2026-09-19 20:35 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
205930  -8 2396  JR8BRK DL7ARV JO62
205930 -15 1845  JR8BRK DK5WL JN39
210000  +3 2396  JR8BRK DL7ARV JO62
210000 -16 1844  JR8BRK DK5WL R-11
210030 -15 2396  JR8BRK DL1SRS JN49
210030 -16 1844  JR8BRK DK5WL 73
210100 -11 2396  JR8BRK DL1SRS JN49
210130 -11 2396  JR8BRK DJ0MAB JN49
211230 -20 1427  JR8BRK EK/RX3DPK -19
212130 -15 2225  JR8BRK IT9PHU -15
212130 -21 1426  JR8BRK EK/RX3DPK -16 (x2)
212400 -17 2226  JR8BRK IT9PHU -15 (x2)
203500  -4 2713  A99AA JR8BRK QN02

UTC    dB Audio  Message
190300  +2 2896  JR8BRK RO2X KO74 (x2)
203300  +1 1667  JR8BRK SV1DKR -16 (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.