UF4S/P — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

754 messages

Active dates

2 UTC dates

Estimated median S/N

-7 dB

Estimated 10th-90th percentile

-14 to -0.1 dB

Recurring-pattern threshold

Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 52, moderate (-15 to -9 dB) 253, strong (≥ -8 dB) 449.

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 UF4S/P 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 UF4S/P

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

LO45 · 249 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,920 km (approx.)

Last such locator decoded

2026-08-22 19:25 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
192530  -2 1059  RO2X UF4S/P -03
192545  +6 2436  UF4S/P RO2X R+16
192600  -2 1058  RO2X UF4S/P RR73
192615  +4 2436  UF4S/P RO2X 73
194645 -13 1763  UF4S/P RX3DQL KO95 (x4)
194945  -8 1763  LZ67PP UF4S/P 73
195130 -20  807  UF4S/P G4MHJ
195245  -1 2371  UF4S/P SP9KM -07
195315  +0 2370  HF50HK UF4S/P RR73
195500 -16  807  UF4S/P G4MHJ (x2)
195545  -9  258  UF4S/P IU3GOR JN55

UTC    dB Audio  Message
175215  +1 1549  UF4S/P UA3DPM KO95 (x2)
180000  -2  535  UF4S/P R3TAW LO15 (x2)
180300 -10 1141  UF4S/P R6YG LN04
180945  -8 1537  UF4S/P DM4ZPJ JO60
181000 -13 1537  DM4ZPJ UF4S/P +13
182300  +3 1357  UF4S/P DL6KIX JO50
182345  -3 1533  UF4S/P SP9IMY -01
182400  -2 1357  UF4S/P DL6KIX JO50 (x2)
182645  +7 1533  UF4S/P SP9IMY +01 (x2)
182800  -4 2214  UF4S/P R6YG LN04
182815  +8 1533  UF4S/P SP9IMY -01

UTC    dB Audio  Message
140730  +5 1079  RW6ATD UF4S/P 73
140800  +2 1079  CQ UF4S/P LO45 (x2)
140900  +1 1079  IK2YOU UF4S/P -15
141030  +0 1079  CQ UF4S/P LO45
141100  +4 1079  RN4A UF4S/P +02
141100  -6 1176  UF4S/P ES6DO KO27
141115  -3 1323  UF4S/P PA2KV JO33
141830 -13 1079  DL7ARV UF4S/P -18
144345  -9 1071  UF4S/P RY9W R-03
150400  -1 1077  UF4S/P ES2AJ -11 (x2)
150500  +0 1077  UF4S/P EA5RO IM99 (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.