R4UAS — 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 R4UAS, decoded by SO8OO in southeastern Poland. 1,276 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 87 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-11-04.
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 1,276 FT8 messages attributed to R4UAS as the transmitting token by decoded message structure across 87 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (98%), followed by 20 m (2%). Most decodes (77%) 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: 2026-11-04 18:01 UTC
Observed FT8 message patterns
- Attributed sample
- 1,276 messages
- Active dates
- 87 UTC dates
- Estimated median S/N
- -9 dB
- Estimated 10th-90th percentile
- -16 to -2.5 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 146, moderate (-15 to -9 dB) 577, strong (≥ -8 dB) 553.
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 R4UAS 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 R4UAS
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
- KO85 · 728 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,193 km (approx.)
- Last such locator decoded
- 2026-11-04 17:56 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 | R4UAS S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-04 18:00 | 40m | -4 / - | R2FE | - / -5 | 2 | Partial capture |
| 11-04 17:56 | 40m | -10 / -7 | R9GM | -12 / -8 | 6 | ✓ Full exchange observed |
| 11-04 17:53 | 40m | -10 / -19 | RW3AUK | -14 / - | 3 | ✓ Closing observed |
| 11-03 16:55 | 40m | -8 / - | R2DIH | - / - | 2 | Partial capture |
| 11-02 14:37 | 40m | -16 / 0 | UB3YCK | -6 / -5 | 3 | ✓ Full exchange observed |
| 11-02 14:37 | 40m | -14 / -14 | RU7KQ | -6 / - | 4 | ✓ Closing observed |
| 11-02 14:28 | 40m | - / +2 | RT1L | -12 / - | 3 | ✓ Closing fragment |
| 11-01 16:43 | 40m | - / -9 | RJ3DC | -4 / - | 2 | ✓ Closing fragment |
| 11-01 14:27 | 40m | -7 / - | UK8FCM | - / -15 | 3 | Partial capture |
| 11-01 14:26 | 40m | -6 / -15 | RX9WM | -2 / -4 | 5 | ✓ Full exchange observed |
| 11-01 14:24 | 40m | -7 / - | PA0MUS | -22 / - | 2 | ✓ Closing observed |
| 11-01 14:20 | 40m | -12 / -4 | PE40EUDXF | -6 / +3 | 3 | Partial capture |
| 11-01 14:19 | 40m | -10 / - | R4ADE | - / -14 | 3 | ✓ Closing fragment |
| 10-31 06:25 | 40m | - / -12 | RW3YS | 0 / - | 3 | ✓ Closing fragment |
| 10-30 14:16 | 40m | -17 / - | R8UT | -4 / - | 2 | ✓ Closing observed |
| 10-29 17:08 | 40m | -17 / -23 | M0OXO | +1 / -12 | 3 | Partial capture |
| 10-27 19:57 | 40m | -10 / - | RW6PA | - / - | 2 | Partial capture |
| 10-27 14:54 | 40m | -13 / -2 | EU7FBB | +4 / - | 4 | ✓ Closing observed |
| 10-27 14:51 | 40m | -12 / -15 | R6ACD | -12 / -14 | 3 | ✓ Full exchange observed |
| 10-27 14:48 | 40m | -13 / -13 | R7NO | -6 / - | 3 | ✓ Closing observed |
| 10-26 16:39 | 40m | - / -15 | UA6AFE | 0 / - | 2 | ✓ Closing fragment |
| 10-26 16:35 | 40m | -13 / - | RA6BL | -6 / - | 2 | ✓ Closing observed |
| 10-24 04:09 | 40m | - / -7 | RK6A | +9 / - | 3 | ✓ Closing fragment |
| 10-23 20:57 | 40m | - / -4 | G8RZ | 0 / - | 2 | ✓ Closing fragment |
| 10-23 15:55 | 40m | -21 / -11 | RY6LAL | -10 / -12 | 2 | Partial capture |
| 10-21 14:50 | 40m | -14 / - | RA0SMS | - / - | 2 | Partial capture |
| 10-21 14:31 | 40m | -16 / -9 | R7RC | -6 / - | 2 | ✓ Closing observed |
| 10-21 14:26 | 40m | -17 / +5 | EV1R | +8 / -2 | 5 | ✓ Full exchange observed |
| 10-20 20:15 | 40m | -10 / -10 | LZ2II | -6 / -13 | 5 | ✓ Full exchange observed |
| 10-20 20:14 | 40m | -8 / - | EW4M | - / - | 2 | Partial capture |
| 10-20 20:07 | 40m | -8 / - | RD0L | - / -23 | 2 | Partial capture |
| 10-20 15:26 | 40m | -12 / -5 | RA4HTH | +2 / -3 | 5 | ✓ Full exchange observed |
| 10-20 15:17 | 40m | -18 / - | R1AP | - / - | 2 | Partial capture |
| 10-20 15:15 | 40m | -15 / -12 | RU6C | +4 / -10 | 5 | ✓ Full exchange observed |
| 10-18 14:29 | 40m | -10 / - | UA9URV | - / - | 2 | ✓ Closing fragment |
| 10-18 13:57 | 40m | -10 / -12 | RN6DR | -9 / - | 3 | ✓ Closing observed |
| 10-18 13:53 | 40m | -14 / -3 | RU3DNN | -14 / +1 | 4 | ✓ Full exchange observed |
| 10-18 06:55 | 40m | - / - | EW8DU | +2 / - | 2 | ✓ Closing fragment |
| 10-17 19:08 | 40m | -4 / - | R3KGN | - / - | 2 | Partial capture |
| 10-15 17:16 | 40m | - / +4 | RA3X | -4 / - | 2 | ✓ Closing fragment |
| 10-15 17:11 | 40m | -11 / - | RA3X | - / - | 4 | Partial capture |
| 10-15 17:08 | 40m | - / -13 | R6DOP | -11 / - | 4 | ✓ Closing fragment |
| 10-15 17:04 | 40m | -13 / -8 | R6LQU | -9 / - | 3 | ✓ Closing observed |
| 10-14 20:26 | 40m | - / -9 | UN0GY | -10 / - | 3 | ✓ Closing fragment |
| 10-13 16:33 | 40m | -11 / -5 | RU3OH | -8 / - | 3 | Partial capture |
| 10-13 16:06 | 40m | -16 / - | R6FML | - / - | 2 | Partial capture |
| 10-13 16:00 | 40m | - / -7 | R6DOB/M | -8 / - | 2 | Partial capture |
| 10-13 15:36 | 40m | -8 / -10 | UD6AVY | -2 / - | 2 | ✓ Closing observed |
| 10-13 15:35 | 40m | -10 / -9 | R7YZ | -8 / -13 | 5 | ✓ Full exchange observed |
| 10-12 17:14 | 40m | - / -3 | RA3BQ | -14 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 165800 -13 2682 HS5NMF R4UAS KO85 080700 -20 2257 R3PMV R4UAS R-09 140200 -7 2882 R4UAS RZ6HTP RR73 140245 -8 2787 RA3SI R4UAS KO85 175330 -12 848 R4UAS RW3AUK -19 (x2) 175415 -10 2498 RW3AUK R4UAS 73 175600 -11 2498 R9GM R4UAS KO85 175615 -12 1702 R4UAS R9GM -07 175630 -11 2497 R9GM R4UAS R-08 (x2) 175815 -13 1702 R4UAS R9GM RR73 175930 -10 2497 R9GM R4UAS 73 180030 -4 2497 R2FE R4UAS R-05 (x2)
UTC dB Audio Message 175000 +3 317 R4UAS T77RN -15 202815 +9 826 R4UAS TA4DX -01 (x2) 170300 -3 2750 YB6XFI R4UAS KO85 (x2) 170415 +3 2750 CN8NS R4UAS KO85 (x2) 174515 +6 2578 TA7AO R4UAS KO85 (x4) 174800 +1 2322 G4DBW R4UAS KO85 174815 +1 2244 R4UAS G4DBW -15 174830 +0 2322 G4DBW R4UAS R-11 174845 -1 2244 R4UAS G4DBW RR73
UTC dB Audio Message 211000 -7 1899 R4UAS DK7ZT -14 (x2)
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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