RD4WM — reception at SO8OO

Observed FT8 message patterns

Attributed sample

614 messages

Active dates

20 UTC dates

Estimated median S/N

-7 dB

Estimated 10th-90th percentile

-16 to 0 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 65, moderate (-15 to -9 dB) 173, strong (≥ -8 dB) 376.

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 RD4WM 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 RD4WM

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

LO66 · 85 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

2,180 km (approx.)

Last such locator decoded

2026-11-06 14:55 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
144215 -13 1335  UA0YDB RD4WM +00 (x7)
144915  -8  567  PC40EUDXF RD4WM LO66
144945  -5  566  UA0YDB RD4WM LO66 (x2)
145400 -15 1669  RD4WM UA0YDB -05
145415  -5  566  UA0YDB RD4WM R+05
145430 -14 1669  RD4WM UA0YDB RR73
145445  -8  565  UA0YDB RD4WM 73
145545  -1  566  PC40EUDXF RD4WM LO66

UTC    dB Audio  Message
073300  -7 2710  RD4WM F4IDN IN97
074245 -15 1042  RD4WM OD5VB RR73
072945  -1  801  <...> RD4WM LO66 (x2)

UTC    dB Audio  Message
031445 -21 1641  TJ1GD RD4WM -17 (x2)
034415 -23 2046  RD4WM F5MXH R-11
035215  -9 2047  RD4WM RN6HK LN14
035445 -17 1042  RD4WM SV9AUP KM25
035445 -15 1897  RD4WM RZ6CO LN04 (x3)
035845  -9 2047  RD4WM F4FPR IN88
040015 -17  987  RD4WM UI6O R-04
040015 -10  942  RD4WM CT2HEX IM58
040045 -16  987  RD4WM UI6O R-04
040045  -9  942  RD4WM CT2HEX IM58
040115 -15  988  RD4WM UI6O 73
040115  -8  942  RD4WM CT2HEX IM58

UTC    dB Audio  Message
035000 -16  874  CQ RD4WM LO66 (x2)
035100 -16  874  EW1AFZ RD4WM -10 (x2)
035200 -14  875  W6TOX RD4WM -09
035300 -12  874  W7O RD4WM -19 (x2)
035400  -9  874  CQ RD4WM LO66 (x2)
035500 -13  874  K7VA RD4WM -06 (x2)
035600 -17  874  CQ RD4WM LO66 (x2)
035745  +0 1933  RD4WM UA3SAO -16
040230 -20  874  XE2KBR RD4WM -14

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.