R9YCB — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

273 messages

Active dates

17 UTC dates

Estimated median S/N

-15 dB

Estimated 10th-90th percentile

-20 to -9 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 126, moderate (-15 to -9 dB) 129, strong (≥ -8 dB) 18.

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 R9YCB 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 R9YCB

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

NO13 · 210 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

4,104 km (approx.)

Last such locator decoded

2026-08-30 05:04 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
210430 +10 1190  R9YCB IV3DXW JN65 (x3)
211330  -7 1191  R9YCB S51UN JN75 (x5)
004330  +0 2932  R9YCB F4BYA JN19 (x6)
010600 -13  603  R9YCB UA9JTJ/9 R-16

UTC    dB Audio  Message
045045 -21 1216  BA3NZ R9YCB NO13
050015 -20 1215  UB0SCV R9YCB NO13 (x4)
050315 -16 1216  CQ R9YCB NO13 (x3)
050530  -7  919  R9YCB RW4HUD LO42 (x3)
150645 -20 3104  R9YCB VU2FR ML88
150645 -18 1210  R9YCB F1IQH JN27 (x3)

UTC    dB Audio  Message
200000  -7  801  R9YCB TA3GO -16

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.