RD9U — 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 RD9U, decoded by SO8OO in southeastern Poland. 2,800 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 119 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-11-06.
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 2,800 FT8 messages attributed to RD9U as the transmitting token by decoded message structure across 119 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (46%), followed by 80 m (29%) and 20 m (22%). Most decodes (71%) fell within the six-hour window 22:00-04:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.
Overview
Bands
Last attributed message: 2026-11-06 07:58 UTC
Observed FT8 message patterns
- Attributed sample
- 2,800 messages
- Active dates
- 119 UTC dates
- Estimated median S/N
- -7 dB
- Estimated 10th-90th percentile
- -17 to +4 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 387, moderate (-15 to -9 dB) 806, strong (≥ -8 dB) 1,607.
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 RD9U 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 RD9U
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
- NO33 · 1,256 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 4,351 km (approx.)
- Last such locator decoded
- 2026-11-06 07:58 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 | RD9U S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-06 07:56 | 10m | -12 / - | <...> | - / - | 4 | Partial capture |
| 11-06 00:14 | 160m | - / +1 | R3AP | +5 / - | 2 | ✓ Closing fragment |
| 11-06 00:11 | 80m | -4 / 0 | SP5AA | +11 / -3 | 5 | ✓ Full exchange observed |
| 11-06 00:10 | 80m | -3 / -17 | M1WLK | -4 / -20 | 5 | ✓ Full exchange observed |
| 11-06 00:08 | 80m | -10 / - | SI4A | - / - | 2 | Partial capture |
| 11-06 00:04 | 80m | -13 / - | RX3ASQ | - / - | 2 | Partial capture |
| 11-05 23:44 | 40m | -12 / - | VK6TDF/P | - / -7 | 2 | Partial capture |
| 11-05 14:44 | 40m | -11 / - | PC6A | -6 / -13 | 3 | Partial capture |
| 11-05 14:43 | 40m | -7 / - | GU4WRP | -24 / -13 | 4 | ✓ Closing observed |
| 11-04 23:23 | 80m | - / - | DL9KM | -3 / - | 5 | Partial capture |
| 11-04 23:23 | 80m | -1 / -11 | F1BLQ | +6 / -3 | 8 | ✓ Full exchange observed |
| 11-04 23:20 | 80m | -5 / -2 | SV5BYP | -7 / -17 | 6 | ✓ Full exchange observed |
| 11-04 23:20 | 80m | - / - | YO3GCL | -2 / - | 3 | Partial capture |
| 11-04 23:19 | 80m | - / -13 | SP8HDC | -8 / - | 3 | ✓ Closing fragment |
| 11-04 23:10 | 80m | +1 / -6 | C31KC | -3 / -14 | 17 | ✓ Full exchange observed |
| 11-04 23:07 | 80m | - / -13 | MD0CCE | -1 / - | 2 | ✓ Closing fragment |
| 11-04 00:05 | 80m | -2 / -4 | IS0CAK | +9 / -14 | 5 | ✓ Full exchange observed |
| 11-03 21:41 | 40m | -20 / - | LZ4VR | - / -12 | 2 | ✓ Closing fragment |
| 11-03 01:27 | 80m | -8 / - | UA9XL/P | - / - | 2 | Partial capture |
| 11-03 01:23 | 80m | -16 / - | TK/DH7SB | - / - | 3 | Partial capture |
| 11-02 02:19 | 40m | - / -14 | F5UOU | +6 / - | 2 | Partial capture |
| 11-01 23:08 | 80m | -2 / - | MM0GOR | - / - | 5 | Partial capture |
| 11-01 23:05 | 80m | 0 / -10 | OE8DDX | +14 / -14 | 5 | ✓ Full exchange observed |
| 11-01 23:02 | 80m | -7 / -15 | G8OO | -6 / -19 | 5 | ✓ Full exchange observed |
| 11-01 23:00 | 80m | -12 / -12 | LZ911TD | -6 / -15 | 3 | Partial capture |
| 11-01 22:55 | 160m | - / -19 | SP9MRO | +13 / - | 3 | ✓ Closing fragment |
| 11-01 22:31 | 80m | -3 / - | RU4CK/P | - / -26 | 4 | ✓ Closing fragment |
| 11-01 22:29 | 80m | - / -15 | 9A3K | +4 / - | 3 | ✓ Closing fragment |
| 11-01 13:55 | 40m | - / -13 | F1RCQ | -7 / - | 4 | ✓ Closing fragment |
| 11-01 13:55 | 40m | -12 / -7 | SP9ALT | -5 / - | 5 | ✓ Closing observed |
| 11-01 13:46 | 40m | - / -4 | RU6K | -10 / - | 2 | ✓ Closing fragment |
| 10-29 00:54 | 160m | - / - | OM3RP | -4 / - | 5 | Partial capture |
| 10-29 00:51 | 160m | -8 / -2 | R3UG | -12 / -21 | 7 | ✓ Full exchange observed |
| 10-29 00:49 | 160m | - / -11 | IW4AOT | +10 / - | 2 | ✓ Closing fragment |
| 10-29 00:48 | 160m | -14 / - | RT9YW | - / -5 | 2 | Partial capture |
| 10-29 00:46 | 160m | -19 / -12 | F5UKW | +8 / -22 | 6 | ✓ Full exchange observed |
| 10-29 00:44 | 160m | - / -10 | IW4AOT | +11 / - | 3 | Partial capture |
| 10-29 00:44 | 160m | -18 / -15 | RJ3DC | -1 / -17 | 5 | ✓ Full exchange observed |
| 10-29 00:39 | 160m | - / - | F5UKW | +3 / - | 3 | Partial capture |
| 10-29 00:39 | 160m | -12 / - | LY7M | - / - | 6 | Partial capture |
| 10-29 00:12 | 80m | - / - | DH0BRO | +4 / - | 2 | Partial capture |
| 10-29 00:12 | 80m | - / - | DO7BE | +4 / - | 3 | Partial capture |
| 10-29 00:10 | 80m | -7 / - | UK8FCM | -16 / -5 | 4 | ✓ Closing observed |
| 10-29 00:08 | 80m | -6 / -12 | SP5EXA | +17 / -4 | 7 | ✓ Full exchange observed |
| 10-29 00:02 | 160m | - / - | F5UKW | +5 / - | 4 | Partial capture |
| 10-29 00:00 | 160m | - / - | F8FKI | +18 / - | 3 | Partial capture |
| 10-28 23:59 | 160m | -13 / 0 | UA9YK | -18 / 0 | 2 | Partial capture |
| 10-28 23:56 | 160m | - / - | DF2UU | +1 / - | 2 | Partial capture |
| 10-28 23:55 | 160m | -18 / -6 | EW4M | +23 / -15 | 5 | ✓ Full exchange observed |
| 10-28 23:35 | 80m | -8 / -9 | F5MXH | +3 / -17 | 5 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 075230 -10 2394 RD9U DN9OPA JN38 (x2) 085715 +2 2922 EA5IT RD9U -13 (x2) 085815 -2 2922 YO5QDI RD9U -04 (x2) 085915 +1 2922 CQ RD9U NO33 090115 -2 2922 DL6EL RD9U +03 (x2) 090215 +1 2922 SP5EAF RD9U -11 (x2) 075630 -10 2399 <...> RD9U NO33 (x4)
UTC dB Audio Message 005415 -13 1320 CQ RD9U NO33 005430 +7 2832 RD9U OM3RP JN88 005445 -16 1321 CQ RD9U NO33 005500 -8 2309 RD9U OM3RP JN88 005515 -13 1321 CQ RD9U NO33 005530 -20 2309 RD9U OM3RP JN88 005530 -22 1750 RD9U EA8AR IL18 005545 -16 1320 CQ RD9U NO33 005600 -3 2309 RD9U OM3RP JN88 224930 -21 1328 RD9U UA9LP -13 225515 +10 2030 RD9U SP9MRO -19 (x3) 001445 +6 2216 RD9U R3AP +01 (x2)
UTC dB Audio Message 000400 -14 1278 RX3ASQ RD9U NO33 (x2) 000845 -9 2414 SI4A RD9U NO33 (x2) 001000 +0 2466 RD9U M1WLK -17 001015 -3 2414 M1WLK RD9U R-20 001030 +1 2466 RD9U M1WLK RR73 001045 -3 2414 M1WLK RD9U 73 001100 +11 1851 RD9U SP5AA JO92 001100 -12 2466 RD9U M1WLK 73 001115 -3 2414 SP5AA RD9U -03 001130 +12 1851 RD9U SP5AA R+00 001145 -4 2414 SP5AA RD9U RR73 001200 +10 1851 RD9U SP5AA 73 001230 -24 1701 RD9U GB1RBL -15
UTC dB Audio Message 214115 -11 742 3A2LF RD9U 73 214145 -19 1212 LZ4VR RD9U -12 (x2) 144330 -6 2202 GU4WRP RD9U NO33 (x2) 144415 -24 1684 RD9U GU4WRP RR73 144430 -9 2202 GU4WRP RD9U 73 144445 -5 1167 RD9U PC6A JO21 (x2) 144530 -6 2202 UA4ARS RD9U -07 144630 -11 2202 PC6A RD9U -13 144945 -11 2202 DL40EUDXF RD9U NO33 145445 -17 1620 RD9U RA3WPF R+00 234430 -10 2386 VK6TDF/P RD9U NO33 (x2)
UTC dB Audio Message 231030 -24 1531 RD9U EA1DFP IN53 (x3)
UTC dB Audio Message 024415 -11 2215 CQ RD9U NO33 (x3) 024530 -17 2105 RD9U EP2AES LM55 024545 -15 2215 EP2AES RD9U -17 024600 -21 2105 RD9U EP2AES R+15 024615 -11 2215 EP2AES RD9U RR73 024645 -13 2215 CQ RD9U NO33 024715 -17 2215 BG0FQU RD9U R-05 (x2) 024815 -12 2215 AA0FC RD9U -19 (x2) 024915 -16 2215 CQ RD9U NO33 (x2) 025045 -16 2215 BH6JDR RD9U -17
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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