R9FFJ — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

419 messages

Active dates

32 UTC dates

Estimated median S/N

-12 dB

Estimated 10th-90th percentile

-20 to -5 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 123, moderate (-15 to -9 dB) 203, strong (≥ -8 dB) 93.

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 R9FFJ 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 R9FFJ

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

LO76 · 235 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

2,302 km (approx.)

Last such locator decoded

2026-09-08 17:46 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
173430 -11 1350  R2DRE R9FFJ 73
173645  -8 1351  UA3YGP R9FFJ LO76 (x5)
174215 -13 1000  R3GI R9FFJ 73
184245  +3  801  R9FFJ 9A7KWS JN95 (x8)

UTC    dB Audio  Message
160400  +2 2160  R9FFJ RU3X KO73 (x4)
160845 -13 1282  YE4FNN R9FFJ -11
163530  -1 1813  R9FFJ RM6OM -06 (x2)
174645 -10 1031  UA3GX R9FFJ LO76
174800  +0 1827  R9FFJ SP5ALV KO02 (x3)
175900  +3 1733  R9FFJ RA4LFN -14 (x2)
175945  -7  832  RA4LFN R9FFJ 73
180100  -7 1770  R9FFJ SV9/SV1ABB -13

UTC    dB Audio  Message
091715 -15 1218  RA0ZIH R9FFJ R-08 (x3)
092015 -13 1217  RI1FJL R9FFJ LO76
093000  -5 1217  R9FFJ UA3AIU -07 (x2)
123130 -19 1822  R9FFJ R9OBJ/P RR73
142230 -16 1939  R9FFJ RD0L -07
132700 -12 1766  RM6OS R9FFJ LO76 (x3)
043945 -14 1963  RL4R R9FFJ LO76
095245  +9 2854  R9FFJ RN3PD -13 (x2)
171630  -6 2872  R9FFJ R2FC -05

UTC    dB Audio  Message
075700 +12 2457  R9FFJ RR73; S52D <...> -16
075830  -3  867  R9FFJ RD6OW -08 (x2)
095830 -11 2643  R9FFJ F4IDN R-09
185715 -10  764  R9FFJ RA5AK +05
170345  -8 2568  R9FFJ R2EA -14 (x2)
170915  -4  721  R9FFJ RX7O RR73

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.