SQ1RTU — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

1,197 messages

Active dates

25 UTC dates

Estimated median S/N

-3 dB

Estimated 10th-90th percentile

-12 to +4 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 57, moderate (-15 to -9 dB) 176, strong (≥ -8 dB) 964.

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 SQ1RTU 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 SQ1RTU

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

JO73 · 575 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

613 km (approx.)

Last such locator decoded

2026-09-13 19:51 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
195115  +1 1674  SN40KZE SQ1RTU JO73
195400 -18 2131  SQ1RTU G7VGY/P -05 (x4)
200400  -5 1575  SQ1RTU UR4QWW +00 (x3)
201030 -12 1899  SQ1RTU M0CKX -10
201330 -15 1025  SQ1RTU F5OYA/P -08 (x2)
201815 -13 1365  SQ1RTU EH2PDA -13 (x2)
201945  +2  476  SQ1RTU M0BEW -07 (x2)

UTC    dB Audio  Message
175730  -2  845  SQ1RTU SP2HMT R-02
175800  +0 2318  SQ1RTU SP9UPH JO90
175800  -1  845  SQ1RTU SP2HMT 73
175830  +1 2318  SQ1RTU SP9UPH JO90 (x2)

UTC    dB Audio  Message
191045  +0 1950  OV6ZM SQ1RTU JO73 (x7)
191415  +6 1950  <SO100PKP> SQ1RTU JO73
191430  +1  985  SQ1RTU SO100PKP -01
191445  -3 1950  SO100PKP SQ1RTU R-12
191530  -7  507  SQ1RTU DO1MGN JO50
191545  +3 1949  DO1MGN SQ1RTU -17
191600 -10  508  SQ1RTU DO1MGN R+00
191615  -3 1950  DO1MGN SQ1RTU RR73
191630 -11  507  SQ1RTU DO1MGN 73

UTC    dB Audio  Message
120045  +5 1578  DF3IS SQ1RTU R-16
120100  +5 1309  SQ1RTU DF3IS RR73
120115  -6 1578  DF3IS SQ1RTU 73
120845 -18 1577  DH8KAM SQ1RTU JO73
120945 -11 1578  DC2TL SQ1RTU JO73
121015 -15 1577  UT3ED SQ1RTU JO73 (x5)
185445 -11 1665  SQ1RTU M1DBW R-09 (x2)
185745  +1 1297  SQ1RTU M7JVT 73
190015 -18 1792  SQ1RTU PA0KGB 73
190045 -16  765  SQ1RTU DF2SL JN58

UTC    dB Audio  Message
153945 -11  883  SQ1RTU DC5IU R-07 (x2)
154100 -11 2311  SQ1RTU HB10GBT +07
154715  +8  471  SQ1RTU F5NAA -03 (x2)
155400  +3  638  SQ1RTU DJ3HW -03 (x2)
155900 -18 1848  SQ1RTU DG4SBZ -08 (x4)
162700  +4  783  SQ1RTU IW3GLJ -03 (x2)
163400  -4  569  SQ1RTU 4Z5ML -11 (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.