YU7AS — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

4,413 messages

Active dates

84 UTC dates

Estimated median S/N

+4.5 dB

Estimated 10th-90th percentile

-13.9 to +14 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 340, moderate (-15 to -9 dB) 429, strong (≥ -8 dB) 3,644.

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 YU7AS 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 YU7AS

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

KN05 · 2,614 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

497 km (approx.)

Last such locator decoded

2026-09-08 22:31 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
222215  -3 1107  YU7AS M0IOY IO93
222215  +8 1172  YU7AS R3PJV 73
222300  +5 1173  M0IOY YU7AS -15 (x2)
222345  +1 1107  YU7AS M0IOY R-13
222400 +12 1107  M0IOY YU7AS RR73
222415  +2 1107  YU7AS M0IOY 73
222930 +14 1173  CQ YU7AS KN05 (x4)
223145  +1 1172  YU7AS LA4NM JO49 (x4)

UTC    dB Audio  Message
143015  -4 1087  SP9DPM/P YU7AS R+02
143030  -3  270  YU7AS SP9DPM/P RR73
143045  -6 1087  SP9DPM/P YU7AS 73
143745 -13 1131  CQ YU7AS KN05 (x3)
143915  -3 1131  PD1HT YU7AS 73
193345  -5 1666  SV9/SV1ABB YU7AS KN05
193730  -6 2152  YU7AS PD2JV JO22
193730  +8 1301  YU7AS RC5F KO85
194030 +16 2683  YU7AS F4BPO JN36 (x3)
194400  +5 1300  YU7AS RC5F KO85 (x2)

UTC    dB Audio  Message
113630 -23 1427  YU7AS PA3CDX 73
113630  -7  930  YU7AS IU8WRA JM89
114115  -8 2821  CQ YU7AS KN05
132530  +2 2525  YU7AS R6FMK LN05 (x3)
132700 -15 2177  YU7AS R3TS LO16 (x4)
133030  -8 2471  YU7AS DL6BCU R+17 (x2)
134500  -4 2420  YU7AS M3OCC JO02
134830  +1 2418  YU7AS RZ3Z/P KN84 (x2)

UTC    dB Audio  Message
093345  -4 2410  YU7AS ON5RZ R-07 (x2)
093715 -12 1737  YU7AS PE9JAN JO22 (x4)
113545 -24 1441  YU7AS DA6PI R-06
113615  +8  492  YU7AS IK4LZH JN54 (x4)
073030 -12 2734  YU7AS DM5UE JO52
115015  -3 2704  YU7AS EA3AKY JN01 (x3)

UTC    dB Audio  Message
144800  +4  610  YU7AS SP5JMA KO02

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.