SM4GOJ — reception at SO8OO

Observed FT8 message patterns

Attributed sample

1,203 messages

Active dates

71 UTC dates

Estimated median S/N

-1 dB

Estimated 10th-90th percentile

-11.9 to +9 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 62, moderate (-15 to -9 dB) 162, strong (≥ -8 dB) 979.

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 SM4GOJ 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 SM4GOJ

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

JO79 · 650 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,148 km (approx.)

Last such locator decoded

2026-11-06 00:03 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
235300  -9 1906  SM4GOJ SP6EFY JO72
235315  +2 1906  CQ SM4GOJ JO79
235330  -7 1906  SM4GOJ SP6EFY JO72
235345  -6 1906  SP6EFY SM4GOJ +09
235400 -13 1906  SM4GOJ SP6EFY R-14
235415  -8 1906  SP6EFY SM4GOJ RR73
235430  -6 1906  SM4GOJ SP6EFY 73
235445  -8 1906  CQ SM4GOJ JO79 (x2)
235830  -1 1906  K9ZW SM4GOJ JO79 (x3)
000200  +8  530  VE2WX SM4GOJ JO79
000315 +12  530  KN4PAH SM4GOJ JO79 (x2)

UTC    dB Audio  Message
185745 -10  714  RX3VF SM4GOJ +01
185800 -11  714  SM4GOJ IS0UVE JM49
185815  -2  714  RX3VF SM4GOJ RR73
185830  -5  714  SM4GOJ RX3VF 73
200115 -16 1857  HB0PA SM4GOJ JO79 (x2)
200430 -14 1857  SM4GOJ GJ0KYZ -03 (x2)
200800  -4  790  SM4GOJ S55A JN65 (x4)
201130 -18 1952  8Q7PR SM4GOJ JO79 (x3)

UTC    dB Audio  Message
153815  -9 1033  KH8A SM4GOJ JO79 (x2)
153900 -10 2184  SM4GOJ R9FAI LO87
153915 -18 1032  R9FAI SM4GOJ +11
153930 -13 2184  SM4GOJ R9FAI R-15
153945 -16 1032  R9FAI SM4GOJ RR73
154000 -17 2184  SM4GOJ R9FAI 73
154015 -12 1032  KH8A SM4GOJ JO79 (x5)
150015 -16 2428  BX4AP SM4GOJ JO79 (x3)

UTC    dB Audio  Message
221545  -8 1362  CQ SM4GOJ JO79
221700  +6 2272  SM4GOJ HB9CXZ R-16
221700  -6 2162  SM4GOJ DL9BDR +05
221715  -8 1362  HB9CXZ SM4GOJ RR73
221730  +5 2271  SM4GOJ HB9CXZ 73
221745  -6 1362  DL9BDR SM4GOJ R+12
221800  -5 2162  SM4GOJ DL9BDR RR73
221815  -7 1362  DL9BDR SM4GOJ 73
221845  -2 1362  OZ2JFS SM4GOJ -08 (x2)
222215  +2 2629  UA0SCF SM4GOJ JO79 (x5)

UTC    dB Audio  Message
095130 -11  536  SM4GOJ 5R8IC RR73

UTC    dB Audio  Message
135900 -11  421  SM4GOJ RI1FJL +05 (x2)

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.