RA4CA — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving RA4CA, decoded by SO8OO in southeastern Poland. 1,401 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 96 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-23.
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 1,401 FT8 messages attributed to RA4CA as the transmitting token by decoded message structure across 96 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (45%), followed by 20 m (20%) and 160 m (15%). Most decodes (65%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.
Overview
Bands
Last attributed message: 2026-10-23 19:52 UTC
Observed FT8 message patterns
- Attributed sample
- 1,401 messages
- Active dates
- 96 UTC dates
- Estimated median S/N
- -9 dB
- Estimated 10th-90th percentile
- -17 to +0.9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 192, moderate (-15 to -9 dB) 525, strong (≥ -8 dB) 684.
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 RA4CA 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 RA4CA
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
- LO31 · 973 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,774 km (approx.)
- Last such locator decoded
- 2026-10-23 15:58 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.
| Time UTC | Band | RA4CA S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-23 15:56 | 80m | -9 / - | XX9TXN | - / - | 5 | Partial capture |
| 10-23 15:46 | 80m | - / - | 3566 | +11 / - | 2 | Partial capture |
| 10-23 15:45 | 80m | -9 / - | XX9TXN | - / - | 16 | Partial capture |
| 10-23 15:16 | 80m | -11 / - | XX9TXN | - / - | 33 | Partial capture |
| 10-18 12:56 | 10m | - / -4 | ZB2JK | -10 / - | 3 | Partial capture |
| 10-18 00:42 | 80m | -7 / - | OE1RDU/3 | - / - | 3 | Partial capture |
| 10-17 20:40 | 160m | -17 / - | R8AIJ | - / - | 3 | Partial capture |
| 10-17 17:19 | 160m | -11 / - | H49A | - / -21 | 10 | Partial capture |
| 10-17 16:30 | 40m | -9 / - | RC6OZ | +2 / -6 | 4 | ✓ Closing observed |
| 10-17 16:29 | 40m | -8 / - | RA7KW/P | - / -5 | 2 | Partial capture |
| 10-17 15:56 | 40m | - / - | R6YG | -7 / - | 3 | Partial capture |
| 10-17 15:56 | 40m | -10 / +1 | UC6D | 0 / - | 4 | ✓ Full exchange observed |
| 10-11 02:45 | 80m | - / -6 | RA3TNV | -6 / - | 2 | Partial capture |
| 10-11 02:41 | 80m | -14 / - | RA3TNV | - / - | 2 | Partial capture |
| 10-11 02:36 | 80m | -12 / -4 | R8CC | -16 / +7 | 3 | ✓ Full exchange observed |
| 10-11 02:35 | 80m | -4 / - | EO210WLP | - / -11 | 2 | Partial capture |
| 10-10 23:25 | 80m | -1 / - | 9H6C | - / - | 3 | Partial capture |
| 10-10 16:10 | 80m | -10 / - | R8PG | -18 / -18 | 3 | ✓ Closing observed |
| 10-09 15:27 | 80m | -14 / +2 | RA6FCU/P | -17 / - | 3 | Partial capture |
| 10-04 02:57 | 40m | -10 / - | IQ9SZ | - / - | 3 | Partial capture |
| 10-04 02:55 | 40m | -10 / - | RO2E/P | - / - | 2 | Partial capture |
| 10-04 02:50 | 40m | -8 / - | II5GG | - / -2 | 3 | ✓ Closing fragment |
| 10-04 02:49 | 40m | -10 / - | UB1AVZ/M | - / - | 8 | Partial capture |
| 10-04 02:36 | 160m | -7 / +5 | RO2E/P | +2 / - | 4 | ✓ Closing observed |
| 10-03 03:34 | 80m | -14 / 0 | R80SAA | -8 / - | 7 | ✓ Closing observed |
| 10-02 19:58 | 160m | - / - | DL7ET | -8 / - | 2 | Partial capture |
| 10-02 19:55 | 160m | -12 / - | RO2E/M | - / -21 | 4 | Partial capture |
| 10-02 18:05 | 80m | -12 / - | RK3YWS/P | - / - | 3 | Partial capture |
| 09-27 03:22 | 80m | -18 / -18 | LZ936BA | -13 / - | 3 | Partial capture |
| 09-27 03:17 | 80m | -19 / -20 | UA6Q/M | +10 / -8 | 8 | Partial capture |
| 09-26 17:29 | 80m | -14 / - | RT4A/P | - / -8 | 3 | Partial capture |
| 09-18 21:16 | 80m | - / 0 | R3RRC/P | -6 / - | 2 | Partial capture |
| 09-18 19:47 | 80m | -13 / - | R70SAB | - / -12 | 10 | ✓ Closing fragment |
| 09-16 17:54 | 80m | -13 / - | TK/4O7CC | - / - | 3 | Partial capture |
| 09-16 15:38 | 80m | -13 / - | TK/4O7CC | - / - | 9 | Partial capture |
| 09-15 21:36 | 80m | -18 / -14 | TK/4O7CC | -3 / - | 4 | Partial capture |
| 09-15 21:33 | 80m | -16 / - | RI1FJZ | - / -19 | 2 | Partial capture |
| 09-13 01:56 | 80m | - / -10 | 7X5CY | -11 / - | 4 | Partial capture |
| 09-11 19:53 | 80m | -5 / - | UB3ADO/P | - / -16 | 3 | Partial capture |
| 09-11 19:21 | 160m | - / - | DM5KM | -6 / - | 2 | Partial capture |
| 09-11 19:14 | 160m | -2 / - | RC0AT/P | - / - | 16 | Partial capture |
| 09-11 18:58 | 160m | -8 / - | RC0AT/P | - / - | 24 | Partial capture |
| 09-08 16:26 | 40m | 0 / - | 9A170NT | - / - | 26 | Partial capture |
| 09-08 16:25 | 40m | +2 / - | RV9CX/0 | - / - | 2 | Partial capture |
| 09-08 16:15 | 40m | -1 / - | SP100PKP | - / - | 3 | Partial capture |
| 09-05 15:49 | 80m | -11 / - | R8AIJ | - / -21 | 3 | Partial capture |
| 09-04 17:38 | 80m | -3 / -14 | R1QBQ | -1 / - | 7 | Partial capture |
| 09-04 17:31 | 160m | -13 / - | RT4A | - / -12 | 3 | ✓ Closing fragment |
| 09-04 03:23 | 40m | -10 / - | D44TWO | - / - | 2 | Partial capture |
| 09-04 03:19 | 40m | -12 / - | D44TWO | - / - | 4 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 154945 -14 1002 XX9TXN RA4CA LO31 (x14) 195200 -21 1198 R4SCQ RA4CA -02
UTC dB Audio Message 080245 -21 1394 RA4CA F4IDN IN97 175615 +6 2566 RA4CA RC6OX -10 (x2) 183145 -18 939 UD6AWU RA4CA LO31 (x2) 103900 -9 1028 RA4CA <...> -11 (x2) 193745 -18 1044 <...> RA4CA LO31 055315 -17 1022 RA4CA R7TJ -07 141230 -6 2559 RA4CA DK7UY JO44 (x3) 125615 -7 2312 RA4CA ZB2JK -04 (x3)
UTC dB Audio Message 155645 +0 954 RA4CA UC6D KN95 155645 -9 2183 RA4CA R6YG LN04 155700 -10 954 UC6D RA4CA +15 155715 -3 955 RA4CA UC6D R+01 155715 -8 2183 RA4CA R6YG LN04 155745 +2 954 RA4CA UC6D 73 155745 -5 2183 RA4CA R6YG LN04 162900 -6 849 RA7KW/P RA4CA LO31 (x2) 163030 -8 849 RC6OZ RA4CA LO31 (x2) 163115 +2 925 RA4CA RC6OZ RR73 163130 -9 848 RC6OZ RA4CA 73 163230 -6 848 R3XDT RA4CA R+03 035800 -20 1236 PI9TP/J RA4CA LO31
UTC dB Audio Message 194615 -8 1295 <...> RA4CA LO31 231000 -14 1228 UA3AGW RA4CA LO31 171945 -12 1005 H49A RA4CA LO31 (x10) 204000 -14 937 R8AIJ RA4CA LO31 (x3)
UTC dB Audio Message 043445 -14 899 UB8AHK RA4CA LO31 043545 +8 899 RL4R RA4CA LO31 (x9) 073515 -8 907 RO6OP RA4CA LO31 073630 +2 1119 RA4CA RO6OP -07 073645 -8 907 RO6OP RA4CA R+01 073700 +0 1119 RA4CA RO6OP RR73 073715 -13 907 RO6OP RA4CA 73
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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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