Z31RQ — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

338 messages

Active dates

7 UTC dates

Estimated median S/N

-12.3 dB

Estimated 10th-90th percentile

-19 to -5 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 91, moderate (-15 to -9 dB) 151, strong (≥ -8 dB) 96.

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 Z31RQ 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 Z31RQ

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

KN01 · 187 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

940 km (approx.)

Last such locator decoded

2026-09-18 01:57 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
020200  +3 2601  Z31RQ RA4CX LO21
020200  -8 2217  Z31RQ R7KKO -15
020215 -11  895  DO3KTY Z31RQ RRR
020230  +7 1491  Z31RQ RX6DA KN85
020230  +7 2601  Z31RQ RA4CX LO21
020230 -11 2217  Z31RQ R7KKO -11
020300 +10 1491  Z31RQ RX6DA KN85
020300  +9 2601  Z31RQ RA4CX LO21
020300  -6 2217  Z31RQ R7KKO -11
020330  +6 1491  Z31RQ RX6DA KN85
020330  +5 2601  Z31RQ RA4CX LO21
020400  +5 1491  Z31RQ RX6DA KN85 (x4)

UTC    dB Audio  Message
002900  -4 1159  PY5XH Z31RQ R-26 (x8)
003400 -10 1159  CQ Z31RQ KN01
003415  -3 1346  Z31RQ RM5F KO85
003415 -19 2122  Z31RQ OH2BGD KP20
003445 -12 1159  CX6VM Z31RQ RRR
003515  -2 2122  Z31RQ OH2BGD KP20
003515 -11 1159  CX6VM Z31RQ KN01
003615  -8 2122  Z31RQ OH2BGD KP20

UTC    dB Audio  Message
223215 -15 1995  Z31RQ SV5BYP KM46 (x4)
223945 -13  967  Z31RQ 7Z1BH RR73
224115 -20 1821  Z31RQ CT1FSA IM59 (x5)
230730 -12  875  Z31RQ WZ8S -20 (x2)
001815  -7  392  Z31RQ W6NWS -16 (x3)

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.