YO5IM — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

339 messages

Active dates

10 UTC dates

Estimated median S/N

+0.8 dB

Estimated 10th-90th percentile

-11 to +7 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 19, moderate (-15 to -9 dB) 27, strong (≥ -8 dB) 293.

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 YO5IM 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 YO5IM

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

KN07 · 153 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

277 km (approx.)

Last such locator decoded

2026-09-18 22:30 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
222545  +0 1630  RY3F YO5IM R-12
222600  -5 1630  YO5IM RY3F RR73
222615  -5 1630  RY3F YO5IM 73
222715  -4 1630  UF4S YO5IM KN07
222730  -9 1585  YO5IM UF4S -13
222745  +4 1630  UF4S YO5IM R-06
222800  -5 1585  YO5IM UF4S RR73
222815  -2 1630  UF4S YO5IM 73
222845  +7 1630  2E0AAG YO5IM KN07 (x3)
223015  +0 1630  IK2ZJP YO5IM KN07 (x2)
223100 -11 1353  YO5IM IK2ZJP RR73
223115  +2 1630  IK2ZJP YO5IM 73

UTC    dB Audio  Message
193415  -4  676  YO5IM IU2HUQ -19
194645  -3 2017  YO5IM F5OZC -09 (x2)
194815  -1 1036  YO5IM IK5EEA JN53 (x4)
211400 -13 1688  YO5IM SM7TZK -22 (x3)
211715  +9  410  YO5IM DR800WE -04
212330  -1 2381  YO5IM EA8UP -10 (x2)
213700  +5  684  YO5IM F4FCH -02 (x2)

UTC    dB Audio  Message
213300 -19 1779  YO5IM JO4IPQ 73
220600  -6  439  YO5IM <...> +02
220630  -5  439  YO5IM RR73; BI4JJO <...> -16
132800  +0 2806  YO5IM RA9LL +00 (x2)
210615  -4 1508  YO5IM CT7AUT -09 (x2)
212315  -8 1028  YO5IM EA4GA -06 (x3)
171145 -15 1019  YO5IM 2E0FUM IO92 (x4)
212930 -10  742  YO5IM UN7LEW -11

UTC    dB Audio  Message
193115 -14 2295  YO5IM RN3ZBX KO90 (x3)
193545  -2 1735  YO5IM IK1MJK/P JN35
194115  -5  463  YO5IM R6OD -05 (x4)
202445  -9 2658  YO5IM PC9K RR73
202600 -22 1394  YO5IM F4HTA -14
203345 -21 1919  YO5IM XQ3SK -11 (x2)
091600 -14 1811  YO5IM F5ADE R-02 (x2)
093145  -5  644  YO5IM SV1CQN -19

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.