F4HRM — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

158 messages

Active dates

3 UTC dates

Estimated median S/N

-8 dB

Estimated 10th-90th percentile

-21 to +3 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 47, moderate (-15 to -9 dB) 30, strong (≥ -8 dB) 81.

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 F4HRM 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 F4HRM

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 · 68 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,724 km (approx.)

Last such locator decoded

2026-09-03 20:31 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
202945  -2  341  F4HRM OO0O JO11
203000  -4 1807  OO0O F4HRM -14
203015  +0  341  F4HRM OO0O R+03
203030  -2 1807  OO0O F4HRM RR73
203100  -3 1807  CQ F4HRM IN96 (x2)
203215  -8  977  F4HRM G8IXM +18
203215  -5  941  F4HRM G6MTI IO81
203230  -2 1807  G6MTI F4HRM -02
203245 -12  977  F4HRM G8IXM +18
203245  -8  941  F4HRM G6MTI R+14
203300  -5 1807  G6MTI F4HRM RR73
203345  -7  977  F4HRM G8IXM +18
203415 -11 1307  F4HRM DJ0MAB JN49 (x2)

UTC    dB Audio  Message
094900 -21 1879  K5RSB F4HRM -11
094930 -24 1879  CQ F4HRM IN96 (x2)
095200 -19 1879  EA5IXH F4HRM -04 (x3)
095415 -23 1879  CQ F4HRM IN96
095600 -21 1879  F4HRM F1PSX JN08
095715  -9 1879  K7CTV F4HRM -18 (x2)
095815 -20 1879  N1UL F4HRM -06 (x2)
100045 -21 1880  CQ F4HRM IN96
101100 -24 1881  F4HRM R3DHP R-24 (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.