SN5J — reception at SO8OO

Observed FT8 message patterns

Attributed sample

1,125 messages

Active dates

42 UTC dates

Estimated median S/N

+11 dB

Estimated 10th-90th percentile

0 to +18 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 9, moderate (-15 to -9 dB) 35, strong (≥ -8 dB) 1,081.

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 SN5J 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 SN5J

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

KO02 · 719 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

290 km (approx.)

Last such locator decoded

2026-09-20 03:06 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
024630  +6 1784  SN5J IU5AWQ +13 (x2)
030245  -2  989  SN5J 4Z5PT RR73
030415 -14  534  SN5J UA9SY LO63 (x4)
030600 -14  532  CQ SN5J KO02
032030  -3  420  SN5J ON8WR R+13 (x2)
032200  +9  680  SN5J R5DT KO94
032215 -14  419  R5DT SN5J +04
032230  +5  680  SN5J R5DT R+04
032315 -13  419  WB2RRF SN5J -19 (x2)

UTC    dB Audio  Message
043930 +13  520  6Y5HN SN5J KO02 (x12)
044845  +2  520  SN5J HA5LB JN97 (x3)

UTC    dB Audio  Message
233615  +0 1865  CT2GQA SN5J R-26 (x2)
233715  +0 1865  CQ SN5J KO02 (x2)
215215 -13  455  RI1FJZ SN5J KO02 (x5)
215445  -1  455  CQ SN5J KO02
215500 -15 1004  SN5J DF5AH JO41
215515  +3  455  DF4JH SN5J -16
215530 -13 1004  SN5J DF5AH JO41
215545  -2  455  DF4JH SN5J RR73
215630 -15  822  SN5J DF4JH 73

UTC    dB Audio  Message
202630  -3 2408  SN5J 3Z0L R+00
202745  -6 1720  GE3TXA SN5J KO02 (x3)
202915  -3 1720  E75C SN5J KO02
202930 -17 1767  SN5J E75C -04
202945 -10 1720  E75C SN5J R-10
203000 -18 1767  SN5J E75C RR73
203015  -7 1720  E75C SN5J 73
203045  -3 1720  3Z0L SN5J RR73
203715  +0 1720  4X5EF SN5J KO02 (x3)
013900  +2 2031  SN5J OR7K +02 (x2)

UTC    dB Audio  Message
051345  -2  444  SN5J PD3LKN JO22
053530  +0 2479  SN5J VK7AC -16 (x2)
053630 -12  476  SN5J RA3ZDU KO90 (x3)
000330  -3 2020  SN5J CN8NS R-15 (x2)
003100  -8 3013  SN5J VU2SW R-14
005230  -1 2054  SN5J K1HC R-17 (x2)
203115  -3  567  SN5J MW7AHM IO81
203115  +9  857  SN5J M0IOY IO93
203145  -6  567  SN5J MW7AHM IO81
203145 +10  858  SN5J M0IOY IO93

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.