R9HDU — reception at SO8OO

Observed FT8 message patterns

Attributed sample

46 messages

Active dates

14 UTC dates

Estimated median S/N

-16 dB

Estimated 10th-90th percentile

-23 to -7 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 28, moderate (-15 to -9 dB) 10, strong (≥ -8 dB) 8.

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 R9HDU 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 R9HDU

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

NO26 · 26 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

4,117 km (approx.)

Last such locator decoded

2026-09-14 18:51 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
204045  -4  420  R9HDU 4J3DJ RR73
204115  +6 2459  R9HDU RA3LBW KO54 (x3)
212545  +4  390  R9HDU UA7K -15 (x2)
190715  +9  602  R9HDU R80SAA -15 (x2)
191515  -9 1548  R9HDU RA3BY KO75
180015 +20 2544  R9HDU S56P -18 (x6)

UTC    dB Audio  Message
173245  -1 1734  R9HDU R6ML R-10
173300  -6 1758  R8CKD R9HDU RR73
173315 -13 1299  R9HDU R8CKD 73
173315  +0 1734  R9HDU R6ML R-10 (x3)
002200 -21 2204  R9HDU RC9OC RR73
185300 +10  651  R9HDU RM5F KO85
210315  -5 2005  UA6Q/M <R9HDU> 73
210315  +4 1502  R9HDU RK3YWS/P RR73
163400 -14 2481  R9HDU RA4P/P -10 (x5)

UTC    dB Audio  Message
174430  -5 1729  R9HDU R7KB -11 (x2)
174945 -10 2069  R9HDU RA6FCU/P -13 (x2)
175045  -6 1401  R9HDU EU1FQ KO33
175045  +3 1657  R9HDU DK5WL JN39
175115  -6 1401  R9HDU EU1FQ KO33
175115  +3 1658  R9HDU DK5WL JN39
175145 -14 1401  R9HDU EU1FQ KO33
175145  -1 1658  R9HDU DK5WL JN39
161245  -5 1458  R9HDU DL9AJ JO52 (x4)
161945 -13 1508  R9HDU R3XBB KO84

UTC    dB Audio  Message
083630 -14 2101  R9HDU <...> -11 (x2)
094130 -15 2102  R9HDU RR73; R2EA <...> +12
161745  -8 2832  R0SDM/P R9HDU NO26 (x4)
174400 -10 2796  R9HDU RA3WPF -16 (x2)
164830 -14 2378  R9HDU M1WLK IO82
173330 -11 2942  R9HDU R3DFE/M -08
173715 -10 2783  <...> R9HDU NO26
174845  -8 2785  <8B81JB> R9HDU NO26
175200  +8 1137  R9HDU F4IVG -18
144815 -10 1625  R9HDU IK2BUF -11

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.