IU5KWL — reception at SO8OO

Observed FT8 message patterns

Attributed sample

25 messages

Active dates

10 UTC dates

Estimated median S/N

-19 dB

Estimated 10th-90th percentile

-24 to -12 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, moderate (-15 to -9 dB) 6, strong (≥ -8 dB) 1.

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 IU5KWL 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 IU5KWL

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

JN45 · 4 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,075 km (approx.)

Last such locator decoded

2026-10-23 16:42 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
170445  +0 2544  IU5KWL IU4FJI R-06
170500 -12 2544  IU4FJI IU5KWL RR73
170515  +2 2544  IU5KWL IU4FJI 73
170945  +1 1941  IU5KWL IK7JNM R-03
171000 -12 1941  IK7JNM IU5KWL RR73
165015 -15 2507  IU5KWL IT9FEG JM77 (x10)

UTC    dB Audio  Message
173430 +15  334  IU5KWL OE8PIT JN66
173430  -6 2489  IU5KWL DF4WQ JN39
173430  -6 1444  IU5KWL DC8SG JO40
173500 +14  334  IU5KWL OE8PIT JN66
173500  -9 2490  IU5KWL DF4WQ JN39
173500  -8 1444  IU5KWL DC8SG JO40
173530 +16  334  IU5KWL OE8PIT JN66
173530  -7 2489  IU5KWL DF4WQ JN39
173530  -4 1444  IU5KWL DC8SG JO40
173600  -6 2490  IU5KWL DF4WQ JN39
173600 -11 1444  IU5KWL DC8SG JO40 (x3)
164500 -14 2409  IU5KWL IT9FEG JM77 (x2)

UTC    dB Audio  Message
165945  +5  738  IU5KWL HB9ELE 73
171345  -4 2135  IU5KWL YO9PH RR73
094330 -17  944  IU5KWL IK2PZX 73
095530 -18 2133  IU5KWL 9A/G3VCQ R-07
100815  -5 2881  IU5KWL F4BYA JN19
170230 -13 2175  IU5KWL IQ9SZ/2 -16 (x2)
105245  -8 1450  IU5KWL DL4NWM JN59 (x7)
094945 -15 1450  IU5KWL IU5WQH JN53

UTC    dB Audio  Message
095200 -13 1367  IU5KWL IW3BAY R-04
100600 -13 1793  IU5KWL DB2VS RR73
101415 -15 1734  IU5KWL EA5DKT RR73
102730  -5  588  IU5KWL EC3A R-18 (x3)
103015 -13 2712  DL6MRS IU5KWL -14
112745 -20 2079  YO4HQF IU5KWL -10 (x2)
160845  -2 2480  IU5KWL MW7KFZ R-20 (x4)

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.