RK4PA/9 — FT8 activity observed at SO8OO
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
Bands
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 UTC | Band | RK4PA/9 S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 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.
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)
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
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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