WD4SRC — reception at SO8OO

Observed FT8 message patterns

Attributed sample

17 messages

Active dates

4 UTC dates

Estimated median S/N

-13 dB

S/N percentile sample

Too small

Recurring-pattern threshold

Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 7.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with WD4SRC 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 WD4SRC

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

EM76 · 12 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

8,028 km (approx.)

Last such locator decoded

2026-08-27 23:25 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
031045 -12  778  WD4SRC 4X5MZ -18 (x2)
032130  +6 1084  WD4SRC LY8O -18 (x2)
023145 -18 1443  WD4SRC VO1CH -04 (x2)
005515 -13 2091  WD4SRC CT3MD -09 (x2)
003845 -10  828  WD4SRC SP5EXA KO02 (x4)
022900  +7 1964  WD4SRC DL8LE JN68 (x3)

UTC    dB Audio  Message
001800  -6 2546  WD4SRC F5MYK IN97 (x2)
014330  -4  802  WD4SRC ON5LW -18 (x2)
045200  -4  332  WD4SRC ZL3IO -16
045330  +7 2009  WD4SRC 9A5E -13 (x2)
045430 -19 1093  WD4SRC HK3W FJ34 (x4)
025900  -8 1389  WD4SRC EK/RX3DPK -15
060100 -19 1568  WD4SRC PE1LDS JO22
014000  -2  962  WD4SRC RR73; K4CC <...> -10
013900  +3  414  WD4SRC FM/VE3DZ -02

UTC    dB Audio  Message
015215 -17 1125  WD4SRC W3LL FM19 (x4)

UTC    dB Audio  Message
051800  -4  855  WD4SRC EA6LU -20 (x2)
021130 -23 1456  WD4SRC CT7AUT -18 (x2)
060300 -17 2140  WD4SRC EA1DR -15
060400 -23 1601  WD4SRC F5NLY JN08 (x2)
060500  -6 2534  WD4SRC F5OHW JN25
060500 -21 1601  WD4SRC F5NLY JN08
060600  -3 2534  WD4SRC F5OHW R-25 (x2)
060930  -4  651  WD4SRC F5NLY JN08 (x2)
012130  +4 1443  WD4SRC LZ1KU -21 (x2)

UTC    dB Audio  Message
235700 -16 1993  WD4SRC 8Q7PR RR73
001745 -16 1992  WD4SRC CP6CL -17 (x2)
005515  -2  745  WD4SRC LZ1SAD -21 (x2)
235915 -14 2359  WD4SRC KE8UOH -19 (x2)
202630  +1  464  WD4SRC CT1CIH IN50 (x3)
232515 -16  876  OM1BL WD4SRC EM76
014530 -10  728  WD4SRC Z62NS RR73
203030  +8  305  WD4SRC T77RN -09 (x3)

UTC    dB Audio  Message
105930 -10  582  WD4SRC IU0VOG JN61

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.