SM1ALH — reception at SO8OO

Observed FT8 message patterns

Attributed sample

239 messages

Active dates

15 UTC dates

Estimated median S/N

+2 dB

Estimated 10th-90th percentile

-10 to +9 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 24, strong (≥ -8 dB) 209.

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 SM1ALH 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 SM1ALH

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

JO97 · 194 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

861 km (approx.)

Last such locator decoded

2026-11-04 15:23 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
011230  +3 2102  SM1ALH DO9BAU JO62 (x10)
151945  -4 2746  KH8A SM1ALH JO97 (x5)

UTC    dB Audio  Message
232845  -3  688  RI1FJZ SM1ALH R-05 (x2)
210445  -6 1135  6W/IK2HKT SM1ALH JO97 (x5)
210715  -4 1175  IK3/UY7LA SM1ALH JO97 (x8)

UTC    dB Audio  Message
054945  -2 1006  6W/IK2HKT SM1ALH JO97 (x5)
055215 +11  375  HF40BLP SM1ALH R-24 (x10)

UTC    dB Audio  Message
195400  -6 2716  SM1ALH DD8HG JO53
195415  -1 2232  BG0FQU SM1ALH R-08
195430  +6 2612  SM1ALH UA3AKO KO85
195430  +5 2660  SM1ALH ON5RZ JO21
195430  -8 2716  SM1ALH DD8HG JO53
195500 +11 2612  SM1ALH UA3AKO KO85
195500  +4 2660  SM1ALH ON5RZ JO21
195500  -7 2716  SM1ALH DD8HG JO53
195530  +8 2612  SM1ALH UA3AKO KO85
195530  +5 2660  SM1ALH ON5RZ JO21
195530  -8 2716  SM1ALH DD8HG JO53
195600  +7 2660  SM1ALH ON5RZ JO21 (x2)
195700 -13 2716  SM1ALH DD8HG JO53 (x2)

UTC    dB Audio  Message
072215  +1 1644  TN8GD SM1ALH JO97 (x3)
072415  +4 1020  TT1GD SM1ALH JO97 (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.