RA3TK — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RA3TK, decoded by SO8OO in southeastern Poland. 406 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 44 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-08.
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 406 FT8 messages attributed to RA3TK as the transmitting token by decoded message structure across 44 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (56%), followed by 20 m (30%) and 40 m (14%). Most decodes (95%) fell within the six-hour window 13:00-19:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10.1 dB.
Overview
Bands
Last attributed message: 2026-09-08 16:53 UTC
Observed FT8 message patterns
- Attributed sample
- 406 messages
- Active dates
- 44 UTC dates
- Estimated median S/N
- -10.1 dB
- Estimated 10th-90th percentile
- -20 to +3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 105, moderate (-15 to -9 dB) 149, strong (≥ -8 dB) 152.
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 RA3TK 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 RA3TK
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
- LO16 · 206 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,580 km (approx.)
- Last such locator decoded
- 2026-09-08 16:53 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 | RA3TK S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-07 18:15 | 80m | -10 / -11 | HA3IC | +5 / - | 3 | Partial capture |
| 09-07 18:11 | 80m | -6 / - | 9A9TJ | - / - | 2 | Partial capture |
| 09-07 18:02 | 80m | +2 / -5 | UR5RBP | -4 / -22 | 5 | Partial capture |
| 09-07 17:55 | 80m | -8 / -7 | RK3YWA | -5 / -15 | 8 | ✓ Full exchange observed |
| 09-07 17:49 | 80m | -6 / - | UR5RBP | - / - | 2 | Partial capture |
| 09-07 17:47 | 80m | -8 / -13 | OV6ZM | -4 / -20 | 5 | ✓ Full exchange observed |
| 09-07 17:43 | 80m | -2 / - | RK3YWA | - / - | 2 | Partial capture |
| 09-07 17:41 | 80m | -8 / +4 | R4HLG | -17 / -5 | 4 | ✓ Full exchange observed |
| 09-07 17:29 | 80m | -8 / -8 | YO7ZG | +1 / -21 | 5 | ✓ Full exchange observed |
| 09-07 17:25 | 80m | -10 / -8 | R3DMS | -6 / -7 | 4 | ✓ Full exchange observed |
| 09-07 17:21 | 80m | -14 / - | SQ100PKP | - / -21 | 2 | Partial capture |
| 09-07 17:17 | 80m | -13 / - | OV6ZM | - / - | 2 | Partial capture |
| 09-07 17:13 | 80m | -11 / -14 | RU6K | +4 / -16 | 4 | ✓ Full exchange observed |
| 09-07 17:12 | 80m | -1 / - | OK1YQ | - / - | 2 | Partial capture |
| 09-06 16:48 | 80m | -22 / - | UA4AFY | - / -25 | 4 | ✓ Closing fragment |
| 09-05 17:19 | 80m | -14 / +2 | R3KLE | -8 / -15 | 4 | ✓ Full exchange observed |
| 09-05 17:14 | 80m | -11 / -3 | RA3GK | +6 / +2 | 4 | ✓ Full exchange observed |
| 09-05 17:10 | 80m | -7 / -11 | OZ7KJ/P | -11 / - | 7 | Partial capture |
| 09-05 17:09 | 80m | -17 / -3 | RA3GK | 0 / - | 2 | Partial capture |
| 09-05 17:02 | 80m | -19 / - | R7FQ | - / -15 | 3 | ✓ Closing fragment |
| 09-05 16:48 | 80m | -13 / - | RA4HPQ | - / -18 | 3 | ✓ Closing fragment |
| 09-05 16:46 | 80m | -10 / -3 | R2AVW | -12 / -6 | 4 | ✓ Full exchange observed |
| 09-05 16:38 | 80m | -20 / - | UB8QBI | - / - | 2 | Partial capture |
| 09-04 16:12 | 80m | -15 / - | JI3VUB | - / -17 | 6 | ✓ Closing fragment |
| 09-04 16:10 | 80m | -9 / - | R3TY | - / - | 2 | Partial capture |
| 09-04 16:07 | 80m | -13 / - | RW9YA | - / -11 | 5 | ✓ Closing fragment |
| 09-04 16:05 | 80m | -13 / - | RC9OC | - / -13 | 3 | ✓ Closing fragment |
| 09-04 16:03 | 80m | -10 / - | RW9YA | - / - | 3 | Partial capture |
| 09-04 16:00 | 80m | -18 / - | RC9OC | - / - | 2 | Partial capture |
| 09-02 19:14 | 80m | -22 / - | R2HY | - / -17 | 2 | ✓ Closing fragment |
| 09-02 19:02 | 80m | -21 / -10 | SP9ENV | +2 / -18 | 4 | ✓ Full exchange observed |
| 09-02 18:31 | 80m | -6 / - | R4NAN | - / -20 | 3 | ✓ Closing fragment |
| 09-02 18:01 | 80m | -16 / - | RU9MJ | -11 / -13 | 3 | ✓ Closing observed |
| 08-30 17:32 | 80m | -8 / 0 | RM6OS | -16 / -8 | 4 | ✓ Full exchange observed |
| 08-30 17:01 | 80m | -6 / - | RL6ZZ | -12 / -22 | 3 | ✓ Closing observed |
| 08-30 16:56 | 80m | -3 / - | R8FH | - / -7 | 2 | ✓ Closing fragment |
| 08-30 16:46 | 80m | -13 / -11 | R6LQG | +3 / -12 | 3 | ✓ Full exchange observed |
| 08-30 16:42 | 80m | -8 / -12 | R6OAD | -3 / -21 | 4 | ✓ Full exchange observed |
| 08-29 17:06 | 80m | - / -12 | UA6XY | -3 / - | 2 | Partial capture |
| 08-29 16:30 | 40m | -11 / -6 | RO6OP | +5 / - | 4 | Partial capture |
| 08-28 17:31 | 80m | -2 / -20 | R6FX | -2 / -19 | 5 | ✓ Full exchange observed |
| 08-28 17:27 | 80m | -7 / - | R8CKD | - / -17 | 3 | ✓ Closing fragment |
| 08-28 17:16 | 80m | -6 / - | SP9WLC | - / - | 2 | Partial capture |
| 08-28 17:14 | 80m | - / -13 | RC6OU | +9 / - | 3 | ✓ Closing fragment |
| 08-26 16:31 | 80m | -8 / -16 | R4UA | -8 / -4 | 4 | ✓ Full exchange observed |
| 08-26 16:11 | 80m | - / +10 | RU5A/M | -15 / - | 2 | Partial capture |
| 08-25 16:37 | 80m | -16 / - | R4HHN | -16 / - | 2 | ✓ Closing observed |
| 08-24 16:18 | 40m | -14 / - | UT5ZC | - / - | 3 | Partial capture |
| 08-24 16:16 | 40m | -14 / - | OK8UQ | - / - | 2 | Partial capture |
| 08-24 16:07 | 40m | -7 / -7 | RX3AJM | -9 / -17 | 7 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 161845 -17 1269 UT5ZC RA3TK LO16 (x2) 170400 -10 2285 RJ9M RA3TK LO16 170645 -19 1379 EN35UKR RA3TK LO16 161930 -17 1370 IV3IEA RA3TK LO16 162200 -18 1391 RA3TK UA6XDA 73 162715 -10 2085 LX7I RA3TK LO16 163030 +8 322 RA3TK RO6OP -06 163045 -11 327 RO6OP RA3TK LO16 163100 +1 323 RA3TK RO6OP -06 (x2) 160600 -10 2323 R6JC RA3TK LO16 132030 -19 2109 RA3TK R6OV RR73 165200 -9 1344 UR5XEJ RA3TK LO16 165300 -10 1497 UB3KGW RA3TK LO16
UTC dB Audio Message 175600 -2 2334 RA3TK RK3YWA -06 175615 -6 2338 RK3YWA RA3TK R-15 175630 -4 2334 RA3TK RK3YWA RRR 175645 -9 2339 RK3YWA RA3TK 73 175700 -8 2334 RA3TK RK3YWA 73 180200 -4 532 RA3TK UR5RBP -05 180215 +5 537 UR5RBP RA3TK R-22 (x4) 181115 -9 1912 9A9TJ RA3TK LO16 (x2) 181515 -10 1869 HA3IC RA3TK LO16 181700 +5 1865 RA3TK HA3IC -11 (x2)
UTC dB Audio Message 135330 -13 1576 PA2PS RA3TK 73 152630 -5 1172 3B8GL RA3TK LO16 (x2) 144400 -2 2835 RA3TK SP9KDA -12 (x4) 144630 -12 2072 RA3TK F4LMX -07 144630 +0 2835 RA3TK SP9KDA +00 (x2) 145600 +16 2601 RA3TK F5OYA/P -03 (x2) 150730 -17 1353 RA3TK ON4FHM RR73 151030 -14 2155 RA3TK PD5MVH RR73 151515 +8 2332 RA3TK F1THK RR73
UTC dB Audio Message 071900 -23 1551 RA3TK LB2WD -15 073915 -17 1467 RA3TK R7NO -14 (x2) 104645 -5 898 RA3TK SV2CLJ -11 (x2) 082915 -13 2325 RA3TK UF6VX +00 084945 -16 2365 RA3TK RX7T -08 132945 -17 1237 RA3TK R7YZ -01 133145 -6 1335 RA3TK <...> -18 134330 -14 2580 RA3TK RW6MDU +00 (x2) 075815 -11 782 RA3TK IK2SND -08 (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.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee