YT3BL — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

2,378 messages

Active dates

31 UTC dates

Estimated median S/N

+7.8 dB

Estimated 10th-90th percentile

-6 to +17 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 30, moderate (-15 to -9 dB) 142, strong (≥ -8 dB) 2,206.

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 YT3BL 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 YT3BL

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

JN95 · 1,714 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

536 km (approx.)

Last such locator decoded

2026-09-20 03:35 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
190245  -3 1375  9A60CBM YT3BL JN95 (x2)
190530 +13 2087  RA9SJG YT3BL JN95 (x3)
032545 +18 2094  SP5DFK/QRP YT3BL JN95 (x3)
032715  +7 1719  II4IANT YT3BL JN95 (x3)
033100 +12 2110  SN40KZE YT3BL JN95 (x2)
033230 +10 1831  CT7AUT YT3BL JN95
033500  +6 1434  TF3VS YT3BL JN95

UTC    dB Audio  Message
055645  +9 1167  ZL3IO YT3BL JN95 (x13)
060400 -14  332  YT3BL ZL3IO RR73
060415  +2 1323  ZL3IO YT3BL 73

UTC    dB Audio  Message
063315  -7 1677  YT3BL RA6ALF LN05 (x3)
064615  -2 1276  YT3BL DL1UDO JO31 (x5)
071545  +6 2784  YT3BL KH6M EL96 (x3)
074230  +3 2704  YT3BL F6HUK -08 (x2)
133530  -6 1569  YT3BL 9H4CM -15
155845  -7 1421  YT3BL EA5JLN RR73

UTC    dB Audio  Message
092745  -2 2664  OT4R YT3BL R-02
092900 -21 1412  YT3BL OT4R 73
094630 -10 1018  <...> YT3BL JN95 (x3)
172630  -3 1261  Z61DX YT3BL JN95 (x4)
172830 -13 1516  OK2XCG YT3BL -11 (x2)
173115 -18 1516  TA1SW YT3BL R-20 (x3)
081430 -10  816  YT3BL RD4AN LN19

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.