RK4PA/9 — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Asiatic Russia

Receiver-side FT8 activity involving RK4PA/9, decoded by SO8OO in southeastern Poland. 19 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-09-10 and 2026-09-16.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 19 FT8 messages attributed to RK4PA/9 as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (58%), followed by 80 m (37%) and 160 m (5%). In this small sample, the estimated median decoder S/N was -12 dB; no usual signal pattern is inferred.

Overview

19
Messages attributed
4
UTC dates decoded
9
Active 15-min windows
-12 dB
Estimated median S/N

Bands

First attributed message: 2026-09-10
Last attributed message: 2026-09-16 02:37 UTC

Observed FT8 message patterns

Attributed sample
19 messages
Active dates
4 UTC dates
Estimated median S/N
-12 dB
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 9, strong (≥ -8 dB) 5.

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 RK4PA/9 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.

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.

Time UTCBandRK4PA/9 S/NCounterpartCounterpart S/NMsgsCapture
09-19 16:55 160m - / -21 R2SDZ +3 / - 6 Partial capture
09-18 20:25 160m - / - 9A4ZM -4 / - 2 Partial capture
09-18 18:49 160m - / - <...> -11 / - 2 ✓ Closing fragment
09-15 23:10 160m - / -16 OH8DPX -2 / - 2 Partial capture
09-15 18:17 160m - / - DJ2XY -6 / - 2 Partial capture
09-15 17:52 160m - / - <...> -2 / - 2 ✓ Closing fragment
09-15 17:50 160m - / -19 IZ0COC -2 / - 4 Partial capture
09-15 17:45 160m - / - DL6WAB -20 / - 2 Partial capture
09-15 17:44 160m - / - DL2AND -8 / - 4 Partial capture
09-15 17:25 160m - / - <...> +3 / - 3 ✓ Closing fragment
09-15 17:06 160m - / - <...> -8 / - 2 ✓ Closing fragment
09-13 22:06 80m - / -12 R4HHN 0 / - 2 Partial capture
09-13 21:42 80m - / - YL3KZ +8 / - 2 Partial capture
09-13 21:08 80m - / -9 SP4OIK -2 / - 9 Partial capture
09-13 21:01 80m - / - SP4OIK 0 / - 2 Partial capture
09-13 18:29 80m - / - S51DI +16 / - 2 Partial capture
09-13 17:41 80m - / +7 OE8SWR -2 / - 3 Partial capture
09-13 17:39 80m - / - DL7UKM -12 / - 2 Partial capture
09-13 17:38 80m - / - <...> -10 / - 2 ✓ Closing fragment
09-13 17:29 80m - / - <...> 0 / - 2 ✓ Closing fragment
09-13 17:00 80m - / -10 R6ML -2 / - 2 Partial capture
09-13 16:56 80m -19 / - <...> +9 / - 2 ✓ Closing fragment
09-13 16:55 80m - / -16 R3BV +1 / - 3 Partial capture
09-13 16:50 80m - / - <...> -5 / - 2 ✓ Closing fragment
09-13 16:37 80m - / - <...> -10 / - 4 ✓ Closing fragment
09-13 16:33 80m - / - <...> -15 / - 2 ✓ Closing fragment
09-11 21:02 160m - / +4 SP2GRP -7 / - 2 Partial capture
09-11 19:55 160m - / -20 UA4FET -11 / - 5 Partial capture
09-11 19:29 160m - / - <...> -1 / - 3 ✓ Closing fragment
09-11 16:24 40m - / - LA1UW -4 / - 2 Partial capture
09-11 15:21 40m - / - IT9FEG -9 / - 2 Partial capture
09-11 13:57 40m - / - DK2MAX -9 / - 3 Partial capture
09-11 13:17 40m - / - DL7EDU +2 / - 3 Partial capture
09-11 12:58 40m - / +4 DL7EDU -4 / - 2 Partial capture
09-11 06:55 40m - / -15 IQ4JO -8 / - 2 Partial capture
09-11 06:14 40m - / -16 EW4DX 0 / - 2 Partial capture
09-11 03:38 40m - / - UX2QX 0 / - 2 Partial capture
09-10 17:00 40m - / -21 DL7ACA +2 / - 3 Partial capture
09-10 16:48 40m - / -12 RA6OD +4 / - 3 Partial capture
09-10 16:46 40m -14 / -6 RX3VF -7 / -7 2 Partial capture
09-10 16:44 40m -12 / - <...> -6 / - 3 ✓ Closing fragment
09-10 16:43 40m - / - R5MA -12 / - 3 Partial capture
09-10 16:38 40m - / - <...> -4 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

160m
UTC    dB Audio  Message
184400 -12 2462  RK4PA/9 <...> 73
184900 -17 2509  <RK4PA/9> JA6MWW R-22
184900  -6 2352  RK4PA/9 <...> RR73 (x3)
202530  -1 2455  RK4PA/9 9A4ZM JN86 (x2)
165545  +8 2096  RK4PA/9 R2SDZ KO94 (x6)
163915  -4 2437  RK4PA/9 <...> 73 (x2)
80m
UTC    dB Audio  Message
211230  -1 1143  RK4PA/9 SP4OIK KO03 (x3)
212530  +3 1139  RK4PA/9 YL3KZ KO16 (x3)
220630  +1 1878  RK4PA/9 R4HHN LO43 (x2)
000915  -4 1328  RK4PA/9 RX6LG +05
001415 -14 1329  LY790A RK4PA/9 RR73
004645 -20 1817  RK4PA/9 KS9J EM79
004815 -24 1817  LY790A RK4PA/9 73
005315  +4 1332  RK4PA/9 UF3T R+13
005345  +5 1332  LY790A RK4PA/9 73
162230 -13 1515  RK4PA/9 UB3PAQ R-07
40m
UTC    dB Audio  Message
131745  +0 1826  RK4PA/9 DL7EDU JO62 (x3)
135445  -6 2744  RK4PA/9 DK2MAX JN58 (x4)
152145  -8 2738  RK4PA/9 IT9FEG JM77 (x2)
161445  +9 2567  RK4PA/9 R7KM -15
162145  -7 2735  RK4PA/9 LA1UW JP52 (x4)
164530  +5 2735  RK4PA/9 DL6OAA JO42

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.

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