UR3QCB — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

2,121 messages

Active dates

41 UTC dates

Estimated median S/N

-5.8 dB

Estimated 10th-90th percentile

-15 to +3 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 189, moderate (-15 to -9 dB) 546, strong (≥ -8 dB) 1,386.

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 UR3QCB 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 UR3QCB

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

KN77 · 1,396 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,005 km (approx.)

Last such locator decoded

2026-09-15 00:30 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
230800  -7 1003  UR3QCB 9A9TT RR73
230815  +2 1003  9A9TT UR3QCB 73
234345  +1 1944  F5RRS UR3QCB KN77
235330 -11  651  9A2TN UR3QCB KN77 (x2)
001645 +14 1154  UR3QCB SQ8NA -02 (x2)
001730 -13 1155  SQ8NA UR3QCB 73
001800 -11  850  UR4SXA UR3QCB KN77 (x2)
001845 +13  851  UR3QCB UR4SXA +07
001900 -13  851  UR4SXA UR3QCB R+12
001915 +15  851  UR3QCB UR4SXA RR73
001930  -9  851  UR4SXA UR3QCB 73
003015  -4 2260  DL2IR UR3QCB KN77

UTC    dB Audio  Message
212245  -7 1664  UR3QCB MM3RCR +05 (x15)

UTC    dB Audio  Message
195115 -12 2507  CE2SV UR3QCB KN77
200430 -12  708  YO3FFE UR3QCB KN77
200545 -13 2575  UR3QCB F6KKR -13 (x2)
200700  -8 2575  F6KKR UR3QCB 73
200800 -21 1887  PY2DS UR3QCB KN77
072045 -19 1842  CQ UR3QCB KN77 (x3)
100200 -20 1549  <...> UR3QCB KN77 (x3)
100430 -19 1768  OE1AVO UR3QCB R-10
100600 -23 1768  UR3QCB KN77
100730 -11  838  EA3GQA UR3QCB KN77

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.