RK0SK — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RK0SK, decoded by SO8OO in southeastern Poland. 66 FT8 messages attributed to this token as transmitter, on 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-15 and 2026-08-23.
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 66 FT8 messages attributed to RK0SK as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (73%) fell within the six-hour window 10:00-16:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (67%); the estimated median was -13 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 66 messages
- Active dates
- 8 UTC dates
- Estimated median S/N
- -13 dB
- Estimated 10th-90th percentile
- -18 to -8 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 15, moderate (-15 to -9 dB) 44, strong (≥ -8 dB) 7.
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 RK0SK in decoded directed-looking exchanges:
Most frequent locator attributed to RK0SK
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
- OO12 · 37 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 5,355 km (approx.)
- Last such locator decoded
- 2026-08-23 04:25 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 | RK0SK S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-04 14:48 | 40m | - / -15 | RA3AJT | +4 / - | 2 | Partial capture |
| 08-23 04:11 | 20m | - / -7 | RD4HX | -7 / - | 3 | ✓ Closing fragment |
| 08-23 04:09 | 20m | - / -21 | RD9M/3 | -10 / - | 2 | Partial capture |
| 08-11 13:49 | 20m | - / -13 | LZ1ZF | -10 / - | 2 | ✓ Closing fragment |
| 08-09 05:49 | 20m | - / -7 | RY3D | -2 / - | 2 | Partial capture |
| 08-07 15:42 | 40m | - / - | DK7UY | -2 / - | 3 | Partial capture |
| 08-07 14:40 | 40m | - / -18 | R2SL | -15 / - | 3 | ✓ Closing fragment |
| 08-07 12:11 | 20m | - / - | DL1R | -10 / - | 4 | Partial capture |
| 08-03 12:27 | 20m | - / -17 | PA3BUD | +2 / - | 3 | Partial capture |
| 08-03 12:22 | 20m | - / -4 | IK6HRB | +2 / - | 2 | ✓ Closing fragment |
| 08-03 12:12 | 20m | - / -18 | DL1R | -5 / - | 9 | Partial capture |
| 08-03 12:11 | 20m | - / - | PA3DNA | -24 / - | 2 | Partial capture |
| 08-03 11:59 | 20m | - / - | DK3HV | -2 / - | 2 | ✓ Closing fragment |
| 08-02 13:42 | 20m | - / - | IU5HIU | -13 / - | 2 | Partial capture |
| 08-02 07:05 | 10m | - / -4 | RK6MC | -16 / - | 2 | ✓ Closing fragment |
| 08-02 06:48 | 10m | - / -4 | R3OR | -10 / - | 2 | ✓ Closing fragment |
| 07-28 11:37 | 20m | - / -13 | R2RAU | -8 / - | 2 | Partial capture |
| 07-27 14:27 | 20m | - / - | DC8SG | -12 / - | 6 | Partial capture |
| 07-27 14:22 | 20m | - / - | DL9IQ | -9 / - | 3 | Partial capture |
| 07-27 14:13 | 20m | - / - | DL9IQ | -9 / - | 2 | Partial capture |
| 07-27 13:55 | 20m | - / -9 | UB4CKD | -6 / - | 4 | ✓ Closing fragment |
| 07-27 13:46 | 20m | - / - | DC8SG | -3 / - | 8 | Partial capture |
| 07-27 13:22 | 20m | - / - | IV3CID | -8 / - | 2 | Partial capture |
| 07-27 12:51 | 20m | - / - | CT1BFP | -16 / - | 12 | Partial capture |
| 07-27 00:03 | 20m | - / - | EA7LGM | +1 / - | 6 | Partial capture |
| 07-26 23:53 | 20m | - / -21 | 5Z4VJ | -21 / - | 4 | Partial capture |
| 07-25 23:26 | 20m | - / -19 | EA3KS | +2 / - | 2 | ✓ Closing fragment |
| 07-25 10:45 | 20m | - / -24 | DL6ZFG | -2 / - | 2 | Partial capture |
| 07-23 13:26 | 20m | - / - | F4GRW | -14 / - | 4 | Partial capture |
| 07-23 11:57 | 20m | - / - | F4BYA | -6 / - | 3 | Partial capture |
| 07-22 23:27 | 20m | - / - | PA1PXL | -20 / - | 3 | Partial capture |
| 07-22 12:26 | 20m | - / -17 | PD0DEX | -5 / - | 3 | ✓ Closing fragment |
| 07-22 11:47 | 20m | - / -16 | F1PBZ | -7 / - | 3 | Partial capture |
| 07-22 11:41 | 20m | - / - | DG5PW | -15 / - | 2 | Partial capture |
| 07-22 11:12 | 20m | - / - | EA7ALL | -16 / - | 8 | Partial capture |
| 07-21 12:56 | 20m | - / - | SM5GRD | -23 / - | 2 | Partial capture |
| 07-21 12:36 | 20m | - / -12 | R6DG | -8 / - | 2 | ✓ Closing fragment |
| 07-20 13:41 | 20m | - / -9 | R4YX | -19 / - | 3 | ✓ Closing fragment |
| 07-20 12:59 | 20m | - / - | LB0TH | -12 / - | 2 | Partial capture |
| 07-13 22:59 | 20m | - / - | EA7LGM | +7 / - | 14 | Partial capture |
| 07-13 20:32 | 20m | - / -3 | DH5BO | -14 / - | 2 | Partial capture |
| 07-13 20:18 | 20m | - / - | F4DUZ | -10 / - | 2 | Partial capture |
| 07-13 19:48 | 20m | - / -10 | JA0LFV | -2 / - | 2 | ✓ Closing fragment |
| 07-13 19:33 | 20m | - / -18 | EA8AT | -9 / - | 3 | ✓ Closing fragment |
| 07-13 19:06 | 20m | - / - | CT2FXY | -8 / - | 2 | Partial capture |
| 07-13 18:38 | 20m | - / -9 | EA3EQS | +4 / - | 2 | ✓ Closing fragment |
| 07-13 18:29 | 20m | - / - | UW5ESX | 0 / - | 3 | Partial capture |
| 07-13 18:22 | 20m | - / -11 | DL1RUD | -6 / - | 3 | ✓ Closing fragment |
| 07-13 18:13 | 20m | -15 / -11 | PD9OH | -3 / -15 | 6 | ✓ Full exchange observed |
| 07-13 18:06 | 20m | - / - | DG1KPC | -12 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 170830 -22 1400 RK0SK R3KJF KO91 194130 -8 1048 RK0SK R6DZR RR73 211315 -1 608 RK0SK RM5F KO85 144030 -15 2437 RK0SK R2SL R-18 (x3) 154215 -3 2835 RK0SK DK7UY JO44 (x3) 144830 +5 634 RK0SK RA3AJT -15 (x2)
UTC dB Audio Message 054945 -3 2687 RK0SK RY3D R-07 094700 -19 2103 RK0SK <...> R-08 095730 -10 2699 RK0SK R3TY LO25 134915 -9 1138 RK0SK LZ1ZF R-13 (x2) 150030 -6 3011 LZ1ZF RK0SK -01 061445 -2 780 RK0SK R4FDD RR73 062630 -9 780 RK0SK R9FEM LO78 040915 -8 2321 RK0SK RD9M/3 -21 (x2) 041145 -5 2145 RK0SK RD4HX LO53 (x3) 041815 -21 2144 RK0SK R2GBR -19 042530 -24 2145 CQ RK0SK OO12
UTC dB Audio Message 064845 -9 1563 RK0SK R3OR -04 (x2) 070545 -11 1358 RK0SK RK6MC -04 (x2) 072115 -22 1953 RK0SK RA7Z 73
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