PI4TX — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

2,620 messages

Active dates

27 UTC dates

Estimated median S/N

-10 dB

Estimated 10th-90th percentile

-19 to -2 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 559, moderate (-15 to -9 dB) 1,028, strong (≥ -8 dB) 1,033.

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 PI4TX 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 PI4TX

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

JO22 · 2,108 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,201 km (approx.)

Last such locator decoded

2026-09-15 21:25 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
210930  +0 2286  BG0HP PI4TX JO22
211045  -3 2286  EA5FGC PI4TX JO22 (x2)
211200  -3 2942  PI4TX EA5FGC -16
211315  -8 2287  F4CQS PI4TX JO22
211415  -8 2286  UK8OM PI4TX JO22 (x3)
211745  -1 2286  GW4GJA PI4TX JO22
211915  +2 2285  SV9QWC PI4TX JO22 (x2)
212045  +1 2285  7Z1BQ PI4TX JO22
212230 -14 1146  PI4TX EA1HFV -05
212315  -7 2285  EA1HFV PI4TX R-13
212515 -10 2285  PZ5RA PI4TX JO22

UTC    dB Audio  Message
003430  -1 2281  VA3DIF PI4TX JO22 (x2)
003515 -21 1827  PI4TX VA3DIF RR73
003530  -8 2281  VA3DIF PI4TX 73
010445  -2 2280  SV1ENV PI4TX JO22 (x3)
011100  -7 2281  OZ7FOC PI4TX JO22 (x2)
011630  -8 2280  8R1TM PI4TX JO22 (x3)
012545  -6 2281  VE3ARF PI4TX JO22 (x3)

UTC    dB Audio  Message
182130  -7 2078  RZ3Z/P PI4TX JO22
182300  -6 2078  WA3ZSC PI4TX JO22 (x3)
182500  -1 2078  VU2EEI PI4TX JO22 (x4)
182930 -12 2078  R3RBB PI4TX JO22 (x3)
183100  -9 2078  TA4SM PI4TX JO22 (x4)

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.