SP7LSM — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

170 messages

Active dates

2 UTC dates

Estimated median S/N

-9 dB

Estimated 10th-90th percentile

-16 to -1 dB

Recurring-pattern threshold

Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 22, moderate (-15 to -9 dB) 64, strong (≥ -8 dB) 84.

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 SP7LSM 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 SP7LSM

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

JO91 · 71 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

262 km (approx.)

Last such locator decoded

2026-09-12 17:52 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
172700  -3  866  TM4GGR SP7LSM JO91 (x2)
172915 -18  885  SP7LSM DF0NN JO31 (x2)
173000  -4  866  DF0NN SP7LSM -06 (x3)
173215 -16  942  SP7LSM DF0NN 73
174945  +1 1506  SP7LSM E70SZ -06
175000  -3 1505  E70SZ SP7LSM R+03
175100  -1  657  GB1HTC SP7LSM JO91 (x3)
175245 -14  656  SP7LSM GB1HTC -23
175300  -1  657  GB1HTC SP7LSM R-11

UTC    dB Audio  Message
082830 -19 2349  SP7LSM PD0PWH JO21
083100 -17 2351  SP7LSM DJ0MAB JN49
083130 -14  835  SP7LSM DK8WQ JO40
083130 -11 2351  SP7LSM DJ0MAB JN49
083200 -10  836  SP7LSM DK8WQ JO40
083230  -6 2352  SP7LSM DJ0MAB R-17
083300  -6  836  SP7LSM DK8WQ JO40
083300  -9 2351  SP7LSM DJ0MAB 73
083330  -2  835  SP7LSM DK8WQ R-08
083430 -21 1978  SP7LSM F4FSY -06
083530 -10 2352  SP7LSM UA4FKT LO23 (x2)
084230  -1 1107  SP7LSM DL3MIB JN57 (x3)

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.