R3DDS — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving R3DDS, decoded by SO8OO in southeastern Poland. 53 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-20 and 2026-08-27.
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 53 FT8 messages attributed to R3DDS as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (53%), followed by 40 m (43%) and 10 m (4%). In this small sample, the estimated median decoder S/N was -17 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-08-27 12:24 UTC
Observed FT8 message patterns
- Attributed sample
- 53 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -17 dB
- Estimated 10th-90th percentile
- -24 to -10 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 33, moderate (-15 to -9 dB) 17, strong (≥ -8 dB) 3.
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 R3DDS in decoded directed-looking exchanges:
Most frequent locator attributed to R3DDS
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
- KO81 · 18 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,083 km (approx.)
- Last such locator decoded
- 2026-06-20 16:01 UTC
Other locator fields attributed to this token: KO85 (1).
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 | R3DDS S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-18 05:29 | 40m | - / -16 | R4FFQ | -14 / - | 2 | ✓ Closing fragment |
| 09-14 05:56 | 40m | - / -17 | EW2GI | -10 / - | 5 | ✓ Closing fragment |
| 09-13 18:57 | 40m | - / -15 | YL3CW | 0 / - | 2 | ✓ Closing fragment |
| 09-04 17:37 | 40m | - / -21 | YL3CU | +8 / - | 2 | ✓ Closing fragment |
| 09-03 19:52 | 40m | - / -16 | RY4D | -6 / - | 2 | ✓ Closing fragment |
| 08-28 06:49 | 20m | - / -19 | RC8SAB | -17 / - | 2 | Partial capture |
| 08-24 13:04 | 20m | - / -17 | YT7DX | +8 / - | 2 | ✓ Closing fragment |
| 08-23 09:47 | 20m | - / -16 | F4BYA | +1 / - | 3 | Partial capture |
| 08-23 07:06 | 20m | - / -16 | F1ODM | +6 / - | 2 | ✓ Closing fragment |
| 08-23 06:46 | 20m | - / -17 | F1ODM | +8 / - | 6 | Partial capture |
| 08-21 10:33 | 20m | - / -11 | RA4Y | -3 / - | 4 | ✓ Closing fragment |
| 08-21 06:29 | 20m | - / -7 | RK4FF | -3 / - | 3 | ✓ Closing fragment |
| 08-12 09:41 | 20m | - / - | F1PSX | -23 / - | 4 | Partial capture |
| 08-12 06:17 | 10m | - / -17 | RA6LDX | -8 / - | 2 | ✓ Closing fragment |
| 07-30 03:28 | 20m | - / -6 | R4ML | -4 / - | 2 | ✓ Closing fragment |
| 07-27 10:14 | 20m | - / -15 | S51UN | -19 / - | 3 | Partial capture |
| 07-23 08:49 | 10m | - / -22 | DK2CC | -8 / - | 2 | ✓ Closing fragment |
| 07-22 06:19 | 10m | - / -13 | RD7LC | -12 / - | 2 | ✓ Closing fragment |
| 07-21 13:23 | 20m | - / -18 | RA6FC | -4 / - | 3 | ✓ Closing fragment |
| 07-21 04:37 | 20m | - / -13 | UA9CK | -9 / - | 2 | ✓ Closing fragment |
| 07-21 04:28 | 20m | - / -19 | RT4A | -22 / - | 2 | Partial capture |
| 07-20 10:30 | 20m | - / -16 | R4KK | -19 / - | 2 | Partial capture |
| 07-20 10:22 | 20m | - / -28 | UA4FKD | -23 / - | 3 | Partial capture |
| 07-20 06:23 | 20m | - / -7 | R4ML | -10 / - | 2 | ✓ Closing fragment |
| 07-20 04:01 | 20m | - / -22 | UB8CPH | -8 / - | 2 | ✓ Closing fragment |
| 07-17 14:02 | 20m | - / -17 | R3KCW | -11 / - | 4 | Partial capture |
| 07-17 11:58 | 20m | - / -16 | R9WJ | -21 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 195230 -6 1140 R3DDS RY4D -16 (x2) 173700 +6 2642 R3DDS YL3CU -21 (x2) 182600 +16 2547 R3DDS R3YAF RR73 185715 +1 2442 R3DDS YL3CW R-15 (x2) 055615 -13 1080 R3DDS EW2GI -17 (x5) 052915 -13 1192 R3DDS R4FFQ -16 (x2) 053900 -16 1958 R3DDS UA3SNB RR73
UTC dB Audio Message 064830 +3 2877 R3DDS F1ODM -17 (x3) 094715 +0 2883 R3DDS F4BYA JN19 (x3) 054415 -15 2662 R3DDS OK2CNI JN79 (x2) 130415 +7 2531 R3DDS YT7DX -17 (x2) 114515 -24 1896 RI1FJL R3DDS -08 (x3) 064915 -16 1932 R3DDS RC8SAB -19 (x2)
UTC dB Audio Message 061915 -12 2331 R3DDS RD7LC -13 (x2) 084915 -7 2772 R3DDS DK2CC R-22 (x2) 061700 -8 2540 R3DDS RA6LDX -17 (x2)
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