SP1KRF — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

261 messages

Active dates

8 UTC dates

Estimated median S/N

-3 dB

Estimated 10th-90th percentile

-12 to +9 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 14, moderate (-15 to -9 dB) 25, strong (≥ -8 dB) 222.

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 SP1KRF 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 SP1KRF

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

JO72 · 142 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

552 km (approx.)

Last such locator decoded

2026-08-12 19:32 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
181730  +4 1029  A61SD SP1KRF R-13 (x8)
182845  +7  959  CT1EDA SP1KRF JO72 (x3)
192800  -6  880  CQ SP1KRF JO72                        a1 (x4)

UTC    dB Audio  Message
180515  -1  361  SP1KRF <...> R+12
180545  +1  361  <SP1KRF> DP6SEVEN 73
180545 -12 1681  SP1KRF DO1UKR JO43
180600  +4  548  CQ SP1KRF JO72
180615 -12 1681  SP1KRF DO1UKR JO43
180630  +4  548  CQ SP1KRF JO72
180645 -13 1681  SP1KRF DO1UKR JO43
180700  +2  548  CQ SP1KRF JO72
180715  -4  361  SP1KRF DP6SEVEN RR73
180715 -19 1681  SP1KRF DO1UKR JO43 (x3)
180845  -6  548  SP1KRF YL2TM -12
180845  -7  896  SP1KRF DO1UKR JO43 (x2)

UTC    dB Audio  Message
174745  -8  830  SP1KRF YO9HP -07
174745  -6 2272  SP1KRF DH0GBC +07
174800  -5  583  YO9HP SP1KRF R+02
174815 -10 2272  SP1KRF DH0GBC +07
174830  -5  583  YO9HP SP1KRF 73
174845 -10 2272  SP1KRF DH0GBC +07
174900  -3  583  CQ SP1KRF JO72
174915  -4 2272  SP1KRF DH0GBC +07
174930  -5  583  CQ SP1KRF JO72
174945  -5 2271  SP1KRF DH0GBC +07
175030  -2  583  CQ SP1KRF JO72                        a1 (x2)
175115  -1 2680  SP1KRF IQ4JO JN63
175130  -4  583  CQ SP1KRF JO72
175200  -3 2680  SP1KRF IQ4JO JN63

UTC    dB Audio  Message
153100  +9 2143  SP1KRF LZ3CB KN32 (x2)
153200 -14 2022  SP1KRF YO9PH +03
153200  +5 2143  SP1KRF LZ3CB KN32 (x2)
153400 -11 2021  SP1KRF YO9PH +04 (x3)
154130 -24 1441  SP1KRF EA3DYI JN11
173600  -6 2701  SP1KRF IQ4JO JN63
173700  -8 2650  SP1KRF IU0VOG JN61 (x2)
174100 -20 1440  SP1KRF EA3DYI JN11 (x2)
142245 -19 1138  SP1KRF R7OV KN87

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.