SP5DFK — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

4,744 messages

Active dates

77 UTC dates

Estimated median S/N

-3 dB

Estimated 10th-90th percentile

-15 to +6 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 432, moderate (-15 to -9 dB) 807, strong (≥ -8 dB) 3,505.

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 SP5DFK 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 SP5DFK

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

JO82 · 2,874 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

439 km (approx.)

Last such locator decoded

2026-09-11 20:47 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
203945  -1 1398  SP9HAB SP5DFK R+04
204000  +5 1399  SP5DFK SP9HAB RRR
204015  +3 1398  SP9HAB SP5DFK 73
204030  +1 1398  SP5DFK SP9HAB 73
204415  +0 2080  OK1AWC SP5DFK JO82
204500  -9 1811  OE1TOA SP5DFK JO82
204530  -2 2082  SP5DFK OK1AWC -10
204630  -4  649  RM5F SP5DFK JO82
204630  -3 2082  SP5DFK OK1AWC -10
204700 -11 2025  UX0FF SP5DFK JO82
204715 -12 2230  SP5DFK IU4QQE -18 (x2)
204800 -10 2226  IU4QQE SP5DFK 73
205030  +1 2178  SP5DFK SP8MTA -02 (x2)

UTC    dB Audio  Message
163045 -13 1530  DK0LI/P SP5DFK +07 (x2)
202345  -5  826  SN40KZE SP5DFK +09 (x2)
202430  +8  828  SP5DFK SN40KZE R-17
190215 -22 1873  SP3GHC SP5DFK JO82
190330  -1  565  SP5DFK OR1A -17 (x9)

UTC    dB Audio  Message
194930  +4 1382  SP5DFK ON6LEO -13 (x2)
195145 -10 1261  SP5DFK S5/M0MPM -15
195245  +0  761  SP5DFK SP5JMA KO02 (x4)
184145 -11  887  DK7UY SP5DFK JO82
184245 -24 1978  9A4ZM SP5DFK JO82
184330  +7  889  SP5DFK DK7UY -15
184345 -14  887  DK7UY SP5DFK R+07
184400  +4  889  SP5DFK DK7UY -15 (x2)
184445 -14  887  DK7UY SP5DFK R+10
184530  +5  889  SP5DFK DK7UY RR73

UTC    dB Audio  Message
132445  -5  294  SP5DFK IZ2CPO/QRP -24
132545 -10  294  SP5DFK <...> -24 (x2)
184145  -8  255  SP5DFK 4X1UF -11 (x2)
175700 -10 2087  SP5DFK R3UAX -02 (x2)
145915 -14 2430  SP5DFK R35ARDF R-19
074245  -4 1416  SP5DFK LZ6C R-15 (x2)
075445  +3 1643  SP5DFK UA3VVA R-12 (x2)
080015  -5 1804  SP5DFK R6BH R-23 (x3)

UTC    dB Audio  Message
084300 -13  766  SP5DFK UR5VPR RR73
084400 -23 1647  SP5DFK F5RMK -12
094300 -18 1405  SP5DFK RZ6AOJ -12 (x2)
094945 -15 1012  SP5DFK EN35UKR -18
140530 -18 2101  SP5DFK UT4EO -20 (x2)
141245  -4  842  SP5DFK US0QV RR73
131200  -1 1234  SP5DFK LZ1EV -15 (x2)
131300  +6 1234  SP5DFK RR73; HG8LXL <...> -18
145645  -9 1758  SP5DFK <...> -15
150630 -10 2293  SP5DFK SV2JAO -12 (x2)
073315 -22 1535  SP5DFK <...> R-03

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.