RK4F — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RK4F, decoded by SO8OO in southeastern Poland. 339 related FT8 messages, 107 CQ messages, observed on 160m, 80m, 40m, 20m, 10m, across 35 UTC dates. Heard between 2026-05-27 and 2026-08-24.
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 RK4F worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by RK4F
Approximate centre of LO23, decoded 2026-08-24 07:08 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 | RK4F S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-24 07:04 | 20m | +16 / - | VK4BPK | - / -16 | 6 | ✓ Closing fragment |
| 08-24 07:03 | 20m | +18 / - | VK5RJ | - / - | 2 | Partial capture |
| 08-24 06:56 | 20m | +20 / - | OK2CNI | - / 0 | 2 | ✓ Closing fragment |
| 08-24 06:53 | 20m | +16 / - | VK4BPK | - / - | 3 | Partial capture |
| 08-24 06:49 | 20m | +10 / - | VK4BPK | - / - | 2 | Partial capture |
| 08-24 06:47 | 20m | +12 / +1 | EA2EDI | -22 / -11 | 3 | ✓ Full exchange observed |
| 08-23 04:58 | 20m | +2 / - | K4A | - / -20 | 2 | ✓ Closing fragment |
| 08-23 04:55 | 20m | -8 / - | K4A | - / - | 3 | Partial capture |
| 08-22 17:29 | 40m | 0 / - | R1BQW/M | - / -10 | 3 | Partial capture |
| 08-22 17:22 | 40m | - / +1 | R4PFY | -12 / - | 2 | ✓ Closing fragment |
| 08-22 17:18 | 40m | -18 / +6 | EU6UE | -2 / - | 3 | ✓ Closing observed |
| 08-22 17:16 | 40m | -17 / -8 | RA2FGK | -15 / - | 4 | Partial capture |
| 08-22 17:14 | 40m | -17 / - | R1530IG | - / -4 | 2 | Partial capture |
| 08-22 16:51 | 80m | -17 / - | RV9WB | - / -3 | 3 | ✓ Closing fragment |
| 08-20 06:23 | 20m | +18 / - | VK4KTW | - / - | 3 | Partial capture |
| 08-20 06:20 | 20m | +12 / - | DL1R | +4 / -3 | 7 | Partial capture |
| 08-20 06:18 | 20m | +10 / - | R6ADH | - / -14 | 2 | ✓ Closing fragment |
| 08-20 06:17 | 20m | +13 / - | R1BOH | - / -12 | 2 | ✓ Closing fragment |
| 08-20 06:16 | 20m | +14 / - | PD0DNA | - / -18 | 2 | ✓ Closing fragment |
| 08-18 11:43 | 20m | -3 / - | DF3IAL | - / -17 | 3 | ✓ Closing fragment |
| 08-18 11:40 | 20m | +4 / - | 2E0TSS | - / -11 | 2 | ✓ Closing fragment |
| 08-18 11:35 | 20m | -4 / - | JM7GTK | - / -4 | 2 | ✓ Closing fragment |
| 08-18 11:33 | 20m | -4 / - | 7N1PVD | - / -16 | 3 | Partial capture |
| 08-18 11:31 | 20m | -16 / - | JR4DHK | - / -14 | 2 | ✓ Closing fragment |
| 08-17 18:32 | 40m | - / -6 | 7Z1XX | -11 / - | 2 | ✓ Closing fragment |
| 08-17 18:22 | 80m | -18 / +2 | RA3LCI | -20 / -2 | 2 | Partial capture |
| 08-16 11:01 | 10m | - / -21 | DN9PMH | -24 / - | 2 | Partial capture |
| 08-16 10:57 | 10m | -21 / +10 | IK4LZH | +1 / 0 | 5 | ✓ Full exchange observed |
| 08-16 10:46 | 10m | - / -6 | DN9OPA | -10 / - | 3 | ✓ Closing fragment |
| 08-16 10:24 | 20m | -14 / -6 | OM1AMT | -10 / - | 4 | Partial capture |
| 08-16 10:21 | 20m | -4 / - | CR5VP | - / -21 | 2 | Partial capture |
| 08-16 10:20 | 20m | -9 / -1 | M9LCB | -20 / -13 | 2 | Partial capture |
| 08-04 14:17 | 20m | - / -15 | TA2ED | -15 / - | 3 | Partial capture |
| 08-04 14:04 | 20m | - / -10 | ON5MGA | -18 / - | 13 | Partial capture |
| 08-04 14:02 | 20m | - / -13 | EA4IAQ | -1 / - | 2 | ✓ Closing fragment |
| 08-02 10:03 | 20m | +4 / - | HI8UD | - / -13 | 3 | Partial capture |
| 07-31 06:56 | 20m | -4 / -3 | PD3LKN | -12 / - | 3 | ✓ Closing observed |
| 07-31 06:55 | 20m | - / - | DL1R | +4 / - | 8 | Partial capture |
| 07-30 12:16 | 20m | +6 / - | SP1ZMO | - / - | 2 | ✓ Closing fragment |
| 07-30 12:08 | 20m | +10 / - | ON6CQ | - / -15 | 2 | ✓ Closing fragment |
| 07-30 12:06 | 20m | +6 / - | SP9DAT | - / -1 | 2 | ✓ Closing fragment |
| 07-30 12:03 | 20m | -4 / - | LW5DIT | - / - | 2 | Partial capture |
| 07-28 11:11 | 20m | -10 / -3 | F4HSB | -20 / -15 | 3 | ✓ Full exchange observed |
| 07-28 11:06 | 20m | -11 / - | <...> | - / - | 3 | Partial capture |
| 07-28 10:58 | 20m | -17 / - | UA6ANQ | - / +2 | 3 | ✓ Closing fragment |
| 07-20 05:32 | 20m | -13 / +3 | KS4OT | -14 / -8 | 5 | ✓ Full exchange observed |
| 07-19 11:25 | 20m | -14 / - | G8IXM | - / -26 | 2 | ✓ Closing fragment |
| 07-19 11:22 | 20m | -18 / - | PD4RJ | -24 / - | 3 | ✓ Closing observed |
| 07-19 11:17 | 20m | - / -8 | IK5XCT | -8 / - | 5 | Partial capture |
| 07-19 11:16 | 20m | -18 / - | F4FSY | - / - | 7 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 065845 +18 978 M0PFX RK4F -17 065915 +16 978 CQ RK4F LO23 a1 (x3) 070300 +17 977 VK5RJ RK4F LO23 (x2) 070400 +20 977 VK4BPK RK4F LO23 (x6) 070800 +21 977 CQ RK4F LO23 (x2) 070915 -11 1619 RK4F S55A JN65
UTC dB Audio Message 171800 -17 1583 CQ RK4F LO23 171830 -18 1583 EU6UE RK4F LO23 171845 -2 2589 RK4F EU6UE +06 171915 -15 1582 RK4F RA2FGK -08 171915 -3 2589 RK4F EU6UE RR73 172115 -4 836 RK4F RG3M 73 172215 -10 1358 RK4F R4PFY +01 (x2) 172430 -12 1583 YD5BAG RK4F -10 172615 -8 965 RW9H/M RK4F LO23 172900 -10 1927 GX4ABC RK4F LO23 172930 -2 384 R1BQW/M RK4F LO23 (x3) 173130 -3 687 UB3BDB RK4F LO23
UTC dB Audio Message 203930 -6 878 LB9TH RK4F LO23 204030 -6 879 <DL70ESSEN> RK4F LO23 (x2) 204400 -24 879 BA5AN RK4F RR73 (x2) 204530 -8 879 F6BHK RK4F LO23 (x2) 182230 -20 2072 RK4F RA3LCI +02 182245 -18 2071 RA3LCI RK4F R-02 182415 -21 1628 CQ RK4F LO23 (x2) 164915 -19 1493 ZS6WAB RK4F LO23 165130 -16 2004 RV9WB RK4F LO23 (x3)
UTC dB Audio Message 105700 -24 1851 IS0JHW RK4F LO23 105730 -22 1850 CQ RK4F LO23 105745 +0 488 RK4F IK4LZH JN54 105800 -18 1850 IK4LZH RK4F +00 105815 +2 488 RK4F IK4LZH R+10 105830 -24 1850 IK4LZH RK4F RR73 105845 +1 488 RK4F IK4LZH 73 105900 -20 1850 LZ3AN RK4F LO23 110030 -21 1850 CQ RK4F LO23 110145 -24 1851 RK4F DN9PMH -21 110200 -21 1850 R2FDU RK4F R-03 110315 -24 1852 RK4F DN9PMH -21 110330 -22 1850 CQ RK4F LO23 110815 -18 1849 R6TY RK4F R-08 111430 -18 1850 RK4F DL3NGN JN59
UTC dB Audio Message 201700 -2 699 RA1AGX RK4F R+03 201715 +7 853 RK4F RA1AGX RR73 201730 -8 699 RA1AGX RK4F 73 201745 -13 1000 RK4F YO6HEM KN25 201815 +5 2596 RK4F SQ9DJQ -02 201830 -7 698 CQ RK4F LO23 201845 +3 2596 RK4F SQ9DJQ -02 (x2) 201915 -14 1232 RK4F IU5TUD -19 (x2) 201945 +3 2596 RK4F SQ9DJQ -02 (x5)
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.