RA3RDN — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RA3RDN, decoded by SO8OO in southeastern Poland. 2,986 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 109 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-11.
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 2,986 FT8 messages attributed to RA3RDN as the transmitting token by decoded message structure across 109 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (33%), followed by 160 m (24%) and 20 m (21%). Most decodes (64%) fell within the six-hour window 16:00-22:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.
Overview
Bands
Last attributed message: 2026-10-11 22:40 UTC
Observed FT8 message patterns
- Attributed sample
- 2,986 messages
- Active dates
- 109 UTC dates
- Estimated median S/N
- -8 dB
- Estimated 10th-90th percentile
- -20 to +6 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 705, moderate (-15 to -9 dB) 765, strong (≥ -8 dB) 1,516.
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 RA3RDN 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 RA3RDN
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
- LO02 · 1,867 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,363 km (approx.)
- Last such locator decoded
- 2026-10-11 22:40 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 | RA3RDN S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-11 22:39 | 80m | -7 / +3 | F4MWH | +2 / - | 4 | Partial capture |
| 10-11 01:14 | 80m | - / - | DO8JB | -16 / - | 6 | Partial capture |
| 10-11 01:12 | 80m | -8 / -13 | F4FPR | -10 / -18 | 5 | ✓ Full exchange observed |
| 10-11 01:11 | 80m | -8 / -10 | EA1HFV | -8 / -18 | 6 | ✓ Full exchange observed |
| 10-11 01:09 | 80m | -2 / -9 | EC5W | +3 / -5 | 5 | ✓ Full exchange observed |
| 10-11 01:08 | 80m | -13 / -6 | ON8FAB | -14 / -16 | 5 | ✓ Full exchange observed |
| 10-11 01:05 | 80m | -7 / -4 | RA3TNV | +6 / -16 | 7 | ✓ Full exchange observed |
| 10-11 00:48 | 160m | -9 / -4 | UA3AGW | +14 / -5 | 7 | ✓ Full exchange observed |
| 10-11 00:40 | 160m | -12 / -10 | EW2ZC | +10 / -17 | 8 | ✓ Full exchange observed |
| 10-10 21:43 | 160m | -6 / -10 | S52D | -2 / -12 | 5 | ✓ Full exchange observed |
| 10-10 21:39 | 160m | -5 / -7 | OM2WW | -4 / -16 | 7 | ✓ Full exchange observed |
| 10-10 21:37 | 160m | +2 / - | II5GG | - / - | 2 | Partial capture |
| 10-10 21:35 | 160m | -10 / -4 | R3ZP | 0 / -8 | 5 | ✓ Full exchange observed |
| 10-10 17:45 | 40m | -1 / - | R5BM/M | - / - | 3 | Partial capture |
| 10-09 21:37 | 160m | -16 / - | 9A4N | - / - | 2 | Partial capture |
| 10-09 21:34 | 160m | -21 / -14 | S58T | +12 / -13 | 5 | ✓ Full exchange observed |
| 10-09 21:04 | 160m | - / -15 | SP3HUU | +2 / - | 2 | Partial capture |
| 10-09 21:00 | 160m | -23 / -19 | SP2GJI | +9 / -25 | 4 | ✓ Full exchange observed |
| 10-09 20:54 | 160m | -20 / - | HA1DAE | - / - | 2 | Partial capture |
| 10-09 20:53 | 160m | -23 / - | OH5C | -7 / - | 2 | ✓ Closing observed |
| 10-09 20:49 | 160m | -20 / - | SV3GKU | - / - | 4 | Partial capture |
| 10-09 20:45 | 160m | -23 / - | R7GR | - / -12 | 3 | ✓ Closing fragment |
| 10-09 20:42 | 160m | -17 / - | HA1DAE | - / - | 3 | Partial capture |
| 10-09 16:25 | 160m | - / -2 | RW3PL | -10 / - | 2 | ✓ Closing fragment |
| 10-09 15:58 | 160m | -20 / - | RA9CMO | - / - | 2 | Partial capture |
| 10-09 00:33 | 160m | -10 / - | OM3PC | - / - | 2 | Partial capture |
| 10-09 00:27 | 160m | -8 / - | OM3PC | - / - | 2 | Partial capture |
| 10-09 00:20 | 160m | -20 / -6 | SP5EXA | +10 / -11 | 5 | ✓ Full exchange observed |
| 10-08 18:39 | 160m | -19 / -11 | SN4K | -3 / - | 3 | Partial capture |
| 10-08 18:35 | 160m | -17 / +2 | UA3QGT | -9 / - | 3 | ✓ Closing observed |
| 10-08 18:33 | 160m | - / -7 | UA3SCF | -18 / - | 2 | ✓ Closing fragment |
| 10-08 17:42 | 160m | - / -10 | RZ1OK | 0 / - | 2 | ✓ Closing fragment |
| 10-08 17:36 | 160m | -11 / -10 | LA9GX | +6 / -24 | 4 | ✓ Full exchange observed |
| 10-08 17:22 | 160m | - / -4 | R2SDZ | -4 / - | 2 | ✓ Closing fragment |
| 10-08 17:16 | 160m | -18 / - | RX6DA | -17 / -20 | 5 | ✓ Closing observed |
| 10-08 17:04 | 160m | -14 / - | UA9LLE | - / - | 2 | Partial capture |
| 10-08 17:02 | 160m | -14 / - | R9CS/P | - / -2 | 2 | Partial capture |
| 10-08 16:46 | 160m | -11 / - | RW3XZ | - / - | 3 | Partial capture |
| 10-08 16:37 | 160m | -17 / -7 | R6OBN | -8 / - | 3 | ✓ Closing observed |
| 10-08 16:17 | 160m | -21 / - | R3KAB | -4 / -6 | 2 | ✓ Closing observed |
| 10-08 16:15 | 160m | - / -2 | R5PM | -16 / - | 2 | ✓ Closing fragment |
| 10-08 14:40 | 80m | -13 / - | BX4AP | - / - | 3 | Partial capture |
| 10-07 20:42 | 160m | -19 / - | UA3IDQ | -14 / -23 | 3 | ✓ Closing observed |
| 10-07 20:38 | 160m | -24 / +3 | R2HB | -8 / - | 4 | ✓ Closing observed |
| 10-07 18:46 | 160m | -18 / - | R6TA | - / - | 2 | Partial capture |
| 10-07 18:39 | 160m | - / -12 | UA1CKA | -6 / - | 2 | ✓ Closing fragment |
| 10-07 18:34 | 160m | -20 / +1 | R9CS/P | -13 / - | 3 | ✓ Closing observed |
| 10-07 18:31 | 160m | -23 / - | R9CS/P | - / - | 2 | Partial capture |
| 10-07 15:42 | 160m | -19 / -9 | EU8N | -12 / - | 3 | ✓ Closing observed |
| 10-07 04:41 | 40m | -2 / -8 | RD3FY | 0 / -4 | 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 011315 -11 1033 RA3RDN F4FPR IN88 011330 -8 1033 F4FPR RA3RDN -18 011345 -10 1033 RA3RDN F4FPR R-13 011400 -7 1033 F4FPR RA3RDN RR73 011445 -13 921 RA3RDN DO8JB JO32 (x6) 012015 -15 1033 9H6C RA3RDN LO02 223930 -6 1740 F4MWH RA3RDN LO02 (x2) 224015 -2 1614 RA3RDN F4MWH +03 (x2)
UTC dB Audio Message 004115 -9 1455 EW2ZC RA3RDN LO02 004130 +10 1042 RA3RDN EW2ZC -10 004145 -15 1455 EW2ZC RA3RDN R-17 004200 +10 1042 RA3RDN EW2ZC -13 004215 -15 1456 EW2ZC RA3RDN R-13 004230 +10 1042 RA3RDN EW2ZC RR73 004245 -14 1456 EW2ZC RA3RDN 73 004700 -11 1456 RV9CD RA3RDN LO02 004845 -10 1456 UA3AGW RA3RDN LO02 (x3) 005200 +13 2106 RA3RDN UA3AGW -04 005215 -9 1456 UA3AGW RA3RDN R-05 005230 +15 2106 RA3RDN UA3AGW RR73 005245 -9 1456 UA3AGW RA3RDN 73
UTC dB Audio Message 144600 -16 2244 YC1ABN RA3RDN LO02 145200 -10 2691 RC3D RA3RDN R-12 (x2) 043730 -4 1736 RA3RDN UA3YPS -05 (x2) 043915 -20 1525 IN3IBW RA3RDN R-20 (x2) 044130 -2 2936 RA3RDN RD3FY KO85 044145 -4 2937 RD3FY RA3RDN -04 044200 +2 2935 RA3RDN RD3FY R-08 044215 +0 2936 RD3FY RA3RDN RR73 044230 +1 2935 RA3RDN RD3FY 73 174515 +2 2869 R5BM/M RA3RDN LO02 (x3)
UTC dB Audio Message 072230 -21 2129 RA3RDN RL1B -03 (x2) 072945 -23 2132 <...> RA3RDN LO02 074330 -17 1885 RA3RDN RL1B -10 (x2) 135115 +1 2423 RA3RDN DN9OPA RR73 073415 -13 2198 RA3RDN RM8L MO27 (x3)
UTC dB Audio Message 175245 +20 2457 G7NUT RA3RDN 73 175730 +9 1552 M6ILA RA3RDN LO02 (x3) 175945 +6 1805 MW7IDN RA3RDN LO02 194930 -24 1212 RA3RDN K1VP -06 205015 -13 1626 RA3RDN DL5MKR -07 (x2) 040845 -14 2238 RA3RDN ZP5DBC -03 (x2) 065515 +1 2604 <...> RA3RDN LO02 065715 -1 2604 <R3RRC/1> RA3RDN LO02 (x3) 040800 -6 2646 RK0SWA RA3RDN LO02
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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