JA2VFH — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

5 messages

Active dates

2 UTC dates

Estimated median S/N

-17 dB

S/N percentile sample

Too small

Recurring-pattern threshold

Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 2, strong (≥ -8 dB) 0.

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 JA2VFH in decoded directed-looking exchanges:

Most frequent locator attributed to JA2VFH

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

PM85 · 5 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

8,586 km (approx.)

Last such locator decoded

2026-07-21 21:01 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
214700  -3 1020  JA2VFH YO4NF -20 (x2)
214830 -16 1018  JA2VFH US2YW 73
205445  +1 1146  JA2VFH YO4BXX -15 (x8)
210030  +9  939  JA2VFH Z34K KN01 (x3)
213045 -16 1661  JA2VFH RA3ZH 73

UTC    dB Audio  Message
212515  -4 1097  JA2VFH F5MJN JN09 (x3)
220045 -16 1109  JA2VFH CT3MD -19
211430  -8  570  JA2VFH 7X5CY -08
213830 -21 1998  JA2VFH IW5ABF R-26 (x3)
222830 -20 2121  JA2VFH YU5BU KN03
220015  -9 1932  JA2VFH EB3JT JN01 (x4)
215900  +5  619  JA2VFH D2UY -12 (x2)

UTC    dB Audio  Message
220115 -23 1779  JA2VFH EA8UP -24 (x7)

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.