RK3OS — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RK3OS, decoded by SO8OO in southeastern Poland. 1,131 related FT8 messages, 53 CQ messages, observed on 80m, 40m, 20m, across 34 UTC dates. Heard between 2026-04-29 and 2026-06-26.
These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.
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Overview
Frequent QSO partners observed at SO8OO
Stations RK3OS worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by RK3OS
Approximate centre of KO90, decoded 2026-06-26 06:46 UTC. A transmitted locator is not proof of the operator's permanent location.
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 | RK3OS S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 06-26 06:47 | 20m | -2 / - | R4FDW | - / -5 | 2 | ✓ Closing fragment |
| 06-26 06:44 | 20m | -10 / - | M0DRN | - / - | 5 | Partial capture |
| 06-26 06:41 | 20m | -12 / - | ON8CA | - / - | 4 | Partial capture |
| 06-26 06:38 | 20m | -13 / - | DL1UDO | - / -12 | 4 | Partial capture |
| 06-26 06:32 | 20m | -9 / - | 9A4ZM | -11 / -13 | 3 | Partial capture |
| 06-26 06:31 | 20m | -8 / - | IZ1HJU | - / -13 | 4 | ✓ Closing fragment |
| 06-26 06:27 | 20m | -11 / - | PD0RWH | - / -12 | 6 | Partial capture |
| 06-26 06:24 | 20m | -11 / - | EA5ISA | - / -13 | 4 | ✓ Closing fragment |
| 06-26 06:23 | 20m | - / - | 9A4ZM | -9 / - | 3 | Partial capture |
| 06-26 06:22 | 20m | -11 / - | IQ0OS | - / -12 | 4 | ✓ Closing fragment |
| 06-26 06:17 | 20m | 0 / - | R6TA | - / -11 | 3 | ✓ Closing fragment |
| 06-26 06:14 | 20m | +7 / -13 | HB9EFK | -7 / -9 | 5 | ✓ Full exchange observed |
| 06-24 19:49 | 40m | -13 / -3 | HG8IT | -12 / -7 | 3 | Partial capture |
| 06-24 19:46 | 40m | -11 / - | AO25HSJ | - / -11 | 2 | Partial capture |
| 06-24 19:43 | 40m | -4 / - | II9RICT | - / - | 4 | Partial capture |
| 06-24 19:37 | 40m | - / - | IK4LZH | -2 / - | 4 | Partial capture |
| 06-24 19:34 | 40m | -11 / - | F1UNR | - / -13 | 4 | ✓ Closing fragment |
| 06-24 19:24 | 40m | -2 / - | IR0RPER | - / -8 | 3 | Partial capture |
| 06-24 18:46 | 40m | -8 / 0 | E71AT | -10 / -5 | 4 | ✓ Full exchange observed |
| 06-24 18:45 | 40m | -13 / - | EI8GS | - / - | 3 | Partial capture |
| 06-24 18:38 | 40m | -15 / - | EI8GS | - / - | 3 | Partial capture |
| 06-24 18:26 | 40m | -4 / - | IW8XOU | - / - | 2 | Partial capture |
| 06-24 02:56 | 40m | -19 / - | PV8AJ | - / - | 2 | Partial capture |
| 06-24 02:53 | 40m | -6 / - | HC2GRC | - / -13 | 4 | ✓ Closing fragment |
| 06-06 08:23 | 20m | +4 / - | PD1ADA | - / -7 | 2 | ✓ Closing fragment |
| 06-06 08:23 | 20m | - / - | PA2KV | -6 / - | 2 | Partial capture |
| 06-06 08:17 | 20m | +3 / - | IW8XLD | - / -13 | 6 | Partial capture |
| 06-06 08:14 | 20m | +5 / - | DB2VS | - / -12 | 5 | ✓ Closing fragment |
| 06-06 08:12 | 20m | +10 / - | IQ0VT | - / - | 2 | Partial capture |
| 06-03 09:35 | 20m | -3 / - | RA6FSV | - / -7 | 4 | ✓ Closing fragment |
| 06-03 09:32 | 20m | +3 / - | VO1AW | - / -7 | 3 | ✓ Closing fragment |
| 06-03 09:27 | 20m | -4 / - | IQ9BF | -4 / -11 | 6 | ✓ Closing observed |
| 06-03 09:23 | 20m | -11 / - | 2E0UMK | - / - | 2 | Partial capture |
| 06-03 09:21 | 20m | - / 0 | RA4CX | -6 / - | 4 | ✓ Closing fragment |
| 06-03 09:19 | 20m | 0 / - | MW3FLI | - / -12 | 4 | ✓ Closing fragment |
| 06-01 18:18 | 80m | - / -7 | DO9KB | -2 / - | 2 | ✓ Closing fragment |
| 06-01 18:13 | 80m | -8 / - | R9FAK | - / -1 | 2 | ✓ Closing fragment |
| 06-01 18:12 | 80m | -13 / -5 | RA3BY | -17 / - | 6 | ✓ Closing observed |
| 06-01 18:11 | 80m | - / - | RG7O | -9 / - | 3 | Partial capture |
| 06-01 18:11 | 80m | -6 / - | RK4FD | -9 / +6 | 10 | ✓ Full exchange observed |
| 06-01 18:11 | 80m | -2 / -2 | RA6FC | -5 / +2 | 6 | ✓ Full exchange observed |
| 06-01 18:10 | 80m | - / -12 | SV1TRJ | -18 / - | 2 | ✓ Closing fragment |
| 06-01 18:10 | 80m | 0 / -3 | UA4HJ | -17 / +1 | 7 | ✓ Full exchange observed |
| 05-30 10:25 | 20m | -12 / -4 | RG1L | -22 / - | 2 | ✓ Closing observed |
| 05-30 10:23 | 20m | -16 / - | MI7JQH | - / -7 | 4 | Partial capture |
| 05-30 10:08 | 20m | -2 / - | HA8DG | - / -15 | 2 | Partial capture |
| 05-30 10:02 | 20m | +5 / -18 | PE1NPS | -17 / -4 | 6 | ✓ Full exchange observed |
| 05-30 10:01 | 20m | -4 / - | DK1MBY | -18 / -11 | 3 | Partial capture |
| 05-30 10:01 | 20m | +1 / - | DJ1TU | - / -3 | 3 | ✓ Closing fragment |
| 05-30 09:58 | 20m | +1 / - | OE5PEN | - / -11 | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 063800 -13 1410 DL1UDO RK3OS KO90 (x4) 064115 -14 1276 ON8CA RK3OS KO90 (x4) 064415 -10 2412 M0DRN RK3OS KO90 (x5) 064745 -3 2405 R4FDW RK3OS R-05 (x2)
UTC dB Audio Message 193715 -7 2590 RK3OS F1PBZ -03 193745 -4 536 RK3OS IK4LZH JN54 (x3) 194030 -5 593 CQ RK3OS KO90 a1 194315 -8 752 II9RICT RK3OS KO90 (x4) 194515 -10 1368 IQ3UCY RK3OS KO90 194645 -11 1301 AO25HSJ RK3OS KO90 (x2) 194900 -11 1302 RK3OS HG8IT -03 (x2) 194945 -13 1302 HG8IT RK3OS R-07
UTC dB Audio Message 181400 -1 2503 UA4HJ RK3OS R+01 181415 -14 1528 RK3OS RA3BY KO75 181415 -19 2503 RK3OS UA4HJ RR73 181430 +1 2503 UA4HJ RK3OS 73 181445 -23 1528 RK3OS RA3BY KO75 (x2) 181530 -13 1528 RA3BY RK3OS RR73 181545 -14 1528 RK3OS RA3BY 73 181545 -5 1095 RK3OS RK4FD LO22 181600 -7 1095 RK4FD RK3OS +06 181615 -5 1095 RK3OS RK4FD R+17 181630 -5 1095 RK4FD RK3OS RR73 181645 -2 1095 RK3OS RK4FD 73 181800 -4 1208 RK3OS DO9KB -07 (x2)
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.