R4FBT — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

2,096 messages

Active dates

11 UTC dates

Estimated median S/N

-4 dB

Estimated 10th-90th percentile

-12 to +2 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 68, moderate (-15 to -9 dB) 450, strong (≥ -8 dB) 1,578.

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 R4FBT 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 R4FBT

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

LO13 · 1,152 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,507 km (approx.)

Last such locator decoded

2026-09-09 00:16 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
000400  +0  851  R4FBT R6ZEJ KN98 (x2)
000515 -19 2349  CQ R4FBT LO13
000700  -5  932  R4FBT UI6O KN87 (x9)
001315 -18 2350  CQ R4FBT LO13 (x2)
010700  -8 2349  R4FBT UK8FCM RR73

UTC    dB Audio  Message
183315 +11 2640  LA2W/P R4FBT R+01
183445 +15 2640  RK3YWA R4FBT LO13
183500  -7 2114  R4FBT RK3YWA +01
183515 +11 2640  RK3YWA R4FBT R-10
183530 -10 2114  R4FBT RK3YWA RRR
183545 +12 2640  RK3YWA R4FBT RR73
183600  -7 2114  R4FBT RK3YWA 73
183615 +12 2640  CQ R4FBT LO13 (x8)

UTC    dB Audio  Message
185600  -1 1296  R4FBT RV3ZK KO90 (x3)
191100 -12 2038  R4FBT RA6YDX -19
191100  -2 1873  R4FBT R2EA -07 (x2)
191430 -14 2038  R4FBT RA6YDX RR73 (x3)
191630  -1 2389  R4FBT R2EA RR73
192100 -20  701  R4FBT UD7G RR73
192400 -11 1696  R4FBT RZ6CO -23
193000  +0 1258  R4FBT RA7T -10 (x2)
193330 -21 1983  R4FBT RA6WF LN32

UTC    dB Audio  Message
220715  +0 2578  CQ R4FBT LO13                         a1 (x15)

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.