DF1OLS — reception at SO8OO

Observed FT8 message patterns

Attributed sample

939 messages

Active dates

61 UTC dates

Estimated median S/N

-1 dB

Estimated 10th-90th percentile

-12 to +6 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 43, moderate (-15 to -9 dB) 120, strong (≥ -8 dB) 776.

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 DF1OLS 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 DF1OLS

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

JO51 · 566 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

779 km (approx.)

Last such locator decoded

2026-10-19 20:45 UTC

Other locator fields attributed to this token: JO41 (6).

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
204230  -1 1063  BG0FQU DF1OLS R-22 (x3)
204500  -5 1063  CQ DF1OLS JO51
192015  -9 2105  DF1OLS F4MGP JN04 (x2)
192545 -19 1291  DF1OLS UA9SY LO63
192545  -8 1064  DF1OLS RW6HP LN14 (x4)
192915  -9 1772  DF1OLS RZ4FWA LO23 (x4)

UTC    dB Audio  Message
184515 -10 1393  RI1FJZ DF1OLS JO51 (x7)
190530 +10 1392  DF3IS DF1OLS JO51 (x4)
190715  +6  737  DF1OLS OK2UPG JN99 (x2)
190745 -18 2412  DF1OLS DA6WA JO30
191645 +11  528  PA2RIC/P DF1OLS

UTC    dB Audio  Message
205145 -19 1370  DF1OLS PP5HR GG53 (x2)
190930  +0 1099  CQ DF1OLS JO51 (x2)
191100  +4 1100  WA2EIO DF1OLS RR73 (x2)
191200  -1 1099  CQ DF1OLS JO51
191215  -6 3078  DF1OLS G0FHT IO70
191230 -11 1100  CQ DF1OLS JO51
191315  -9 1100  DF1OLS MW7AHM IO81
191400  +1 1099  LZ3SD DF1OLS RR73
191415 -19 1099  DF1OLS UT5ERZ KN78
191430  +5 1099  LZ3SD DF1OLS 73
191500  +5 1099  CQ DF1OLS JO51 (x2)

UTC    dB Audio  Message
142900  -7 1110  YD7OHC DF1OLS JO51 (x4)

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.