F4HWM — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

192 messages

Active dates

19 UTC dates

Estimated median S/N

-12 dB

Estimated 10th-90th percentile

-19 to 0 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 57, moderate (-15 to -9 dB) 73, strong (≥ -8 dB) 62.

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 F4HWM 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 F4HWM

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

IN96 · 95 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,724 km (approx.)

Last such locator decoded

2026-09-20 05:11 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
050715  +0 2796  F4HWM YO6LM -18 (x3)
191500  -1 1677  CQ F4HWM IN96
191530  -1 1676  F4MGP F4HWM +06
191545 -11 2162  F4HWM F4MGP R+17
191600  -2 1676  F4MGP F4HWM RR73 (x2)
191745 -10 1957  F4HWM SV9QWC +01
191800  -3 1955  SV9QWC F4HWM R+06 (x2)
043145 -16 1945  K1DW F4HWM IN96
051030 -14 1887  WC4Y F4HWM IN96 (x3)

UTC    dB Audio  Message
202130 -19 1934  SM4AZQ F4HWM IN96 (x2)
202230 -13 1741  DO1RWM F4HWM IN96
202315  -6  741  F4HWM DO1RWM -04
202330 -18 1742  DO1RWM F4HWM R-12
202345  -7  741  F4HWM DO1RWM RR73
202400 -10 1741  DO1RWM F4HWM 73
202515 -23 1894  F4HWM M3GDW RR73

UTC    dB Audio  Message
052445 -13 1601  F4HWM R6FX R-16
052715  -7  602  F4HWM LZ3CB R-07 (x2)
064800 -14 2046  AA4SS F4HWM R-12 (x2)
064900 -15 2046  CQ F4HWM IN96                         a1
071345  +2  940  F4HWM DL6UM JO60 (x3)
071530 -10 2046  DL6UM F4HWM -04 (x2)
071645  -9  940  F4HWM DL6UM R-15 (x2)
071830  -6 2045  DL6UM F4HWM RR73
071845 -15  940  F4HWM DL6UM 73

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.