F5SDD/P — reception at SO8OO

Observed FT8 message patterns

Attributed sample

42 messages

Active dates

1 UTC dates

Estimated median S/N

-11 dB

Estimated 10th-90th percentile

-14 to -7 dB

Recurring-pattern threshold

Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 35, strong (≥ -8 dB) 6.

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 F5SDD/P in decoded directed-looking exchanges:

Most frequent locator attributed to F5SDD/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

JN34 · 17 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,267 km (approx.)

Last such locator decoded

2026-08-14 21:07 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
201400 -12 1493  F5SDD/P UR5KC KO30 (x2)
201700 -10  963  F5SDD/P PD3AN -09
203345 -17  963  F5SDD/P ON7VZ -10 (x2)
122945 -13  894  F5SDD/P DG5DR JN69 (x3)
131345 -17 1135  F5SDD/P DD1UN JN49
153415 -16 1101  F5SDD/P OE3WOM R-08 (x2)

UTC    dB Audio  Message
210830  +6 1612  F5SDD/P LZ1GC KN22
210830  -5  919  F5SDD/P F6BTP R-02
210900  +4 1612  F5SDD/P LZ1GC KN22
210900  -8  919  F5SDD/P F6BTP 73
210900 -10 1266  F5SDD/P F5RAV JN09
210930  +4 1612  F5SDD/P LZ1GC KN22
210930 -10 1266  F5SDD/P F5RAV JN09
211000  +7 1612  F5SDD/P LZ1GC KN22
211000 -11 1266  F5SDD/P F5RAV JN09 (x5)
213915  +7  814  F5SDD/P DM5JBN JO60 (x2)

UTC    dB Audio  Message
204645  +6 2657  F5SDD/P F1PBZ -13 (x5)
210015  +6  958  F5SDD/P RA3WY KO81 (x2)
210400 +13 2446  F5SDD/P OH1NPW R-07
210915  +4 2348  F5SDD/P DO5PY JN49
211615  +0 2655  F5SDD/P SV2AEL KN10 (x3)
211915  -5 2351  F5SDD/P R4CHN R-03
212600  +2 2120  F5SDD/P 9A3AUH JN75 (x2)

UTC    dB Audio  Message
204000 -17 2162  F5SDD/P PD3AN -15 (x2)