I4RHP — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

686 messages

Active dates

57 UTC dates

Estimated median S/N

-5 dB

Estimated 10th-90th percentile

-13.6 to +3 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 54, moderate (-15 to -9 dB) 140, strong (≥ -8 dB) 492.

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 I4RHP 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 I4RHP

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

JN54 · 388 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,013 km (approx.)

Last such locator decoded

2026-09-19 18:56 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
065145  +0  406  SV1DKR I4RHP -04
125330  -9  407  HB9DLT I4RHP 73
063845  +2  537  G7HJX I4RHP JN54
072745  -7 1974  YO3FVR/P I4RHP JN54 (x4)
185530  +3  406  JF2JRD I4RHP JN54 (x2)
185645  -9 2635  I4RHP JF2JRD -11
185700  +5  406  JF2JRD I4RHP R-18
185715 -13 2635  I4RHP JF2JRD RR73
185730  +0  406  JF2JRD I4RHP R-18
185745 -11 2635  I4RHP JF2JRD RR73
185800  +4  406  JF2JRD I4RHP 73

UTC    dB Audio  Message
104915  -3  541  G4GSA/P I4RHP JN54
165630  -5  541  HZ1MW/P I4RHP JN54 (x3)
221045  -9 2480  W8RJC I4RHP JN54 (x3)
221515  +0  541  KD8IAK I4RHP JN54
181645 -15 1208  SP8S/P I4RHP JN54 (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.