SQ3M — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

433 messages

Active dates

17 UTC dates

Estimated median S/N

+2 dB

Estimated 10th-90th percentile

-7 to +14 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 22, strong (≥ -8 dB) 404.

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 SQ3M 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 SQ3M

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

JO81 · 320 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

379 km (approx.)

Last such locator decoded

2026-09-19 18:09 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
180315  +8 2113  CQ DX SQ3M JO81 (x4)
180515  +2 2113  R3ICU SQ3M -14 (x2)
180815  +7 2112  RY9C SQ3M JO81 (x3)
180930  -7 1016  SQ3M RY9C -22
180945  +1 2112  RY9C SQ3M R-12
181000 -15 1016  SQ3M RY9C RR73
181015  -4 2112  RY9C SQ3M 73
181030 -14 1016  SQ3M RY9C RR73
181045  +7 2112  RY9C SQ3M 73

UTC    dB Audio  Message
172030  +3 2235  ZL2NU SQ3M JO81 (x11)
173930 +22 2460  4X1UF SQ3M JO81 (x4)

UTC    dB Audio  Message
192115  -8  323  SQ3M 4L7T +06
192145  +2 1446  CN8NS SQ3M JO81
192145  -8  323  SQ3M 4L7T +06
192215  +0 1446  CN8NS SQ3M R-03
192215  -5  323  SQ3M 4L7T +06
192230  -5 2352  SQ3M CN8NS -17
192245  +0 1446  CN8NS SQ3M R-03
192245  -6  323  SQ3M 4L7T +06
192300  -8 2353  SQ3M CN8NS -17
192315  -1 1405  CN8NS SQ3M R-03 (x3)
193300  -5 2353  SQ3M CN8NS -17
193315  -2 1403  CN8NS SQ3M R-05 (x2)

UTC    dB Audio  Message
180445  -3  445  SQ3M BI4XDT 73
180745 -19 2163  SQ3M UA9SY LO63
181345 -20 1644  SQ3M PD0DEX JO32 (x2)
065715  -2 2445  SQ3M YO5PHL KN16 (x2)

UTC    dB Audio  Message
171600  -5  739  SQ3M UR9QQ KN77 (x3)

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.