K4RUM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving K4RUM, decoded by SO8OO in southeastern Poland. 798 related FT8 messages, 146 CQ messages, observed on 80m, 40m, 20m, 10m, across 48 UTC dates. Heard between 2026-05-24 and 2026-08-21.
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.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee
Overview
Frequent QSO partners observed at SO8OO
Stations K4RUM worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by K4RUM
Approximate centre of FN30, decoded 2026-08-19 23:41 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 | K4RUM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-21 12:56 | 20m | - / -17 | PA3ANT | +3 / - | 14 | Partial capture |
| 08-21 12:51 | 20m | - / -14 | OS4K | -17 / - | 3 | Partial capture |
| 08-20 23:18 | 20m | +6 / - | OE1MSC | - / -23 | 2 | ✓ Closing fragment |
| 08-20 23:17 | 20m | +2 / - | 8Z1IT | - / - | 2 | Partial capture |
| 08-20 23:16 | 20m | +4 / - | GE0KUC | - / -7 | 2 | ✓ Closing fragment |
| 08-20 23:15 | 20m | +1 / - | KD9ZHF | - / -7 | 2 | Partial capture |
| 08-20 23:13 | 20m | +2 / - | VA7NRC | - / -10 | 2 | Partial capture |
| 08-20 23:12 | 20m | +7 / - | TA3F | - / -14 | 2 | ✓ Closing fragment |
| 08-20 23:10 | 20m | +10 / - | HI5MAH | - / - | 2 | Partial capture |
| 08-20 21:53 | 20m | -9 / - | G1CEC | - / -6 | 2 | ✓ Closing fragment |
| 08-20 21:49 | 20m | -6 / - | IK8TPB | - / -6 | 2 | ✓ Closing fragment |
| 08-20 21:47 | 20m | -6 / - | UW5KW | - / -1 | 2 | ✓ Closing fragment |
| 08-20 21:45 | 20m | -7 / - | 9A4AA | - / - | 2 | Partial capture |
| 08-20 10:25 | 20m | - / - | IU1TLG | +1 / - | 3 | Partial capture |
| 08-20 10:24 | 20m | - / - | M7JVH | -4 / - | 4 | Partial capture |
| 08-20 10:22 | 20m | - / -19 | UT4QM | -5 / - | 2 | ✓ Closing fragment |
| 08-19 23:40 | 40m | +5 / - | TN8GD | - / -6 | 5 | Partial capture |
| 08-19 23:38 | 40m | +6 / - | <...> | - / -13 | 2 | Partial capture |
| 08-19 10:25 | 20m | - / -6 | F4EXC | +7 / - | 6 | ✓ Closing fragment |
| 08-19 10:18 | 20m | - / -4 | PD2WL | -20 / - | 6 | Partial capture |
| 08-11 10:52 | 20m | - / -19 | G8KVM | -6 / - | 2 | Partial capture |
| 08-10 10:39 | 20m | - / 0 | EA3HKA | -16 / - | 2 | Partial capture |
| 08-10 10:32 | 20m | - / -16 | S09S | -6 / - | 3 | ✓ Closing fragment |
| 08-10 01:01 | 40m | - / +10 | G5TV | -21 / - | 4 | ✓ Closing fragment |
| 08-09 09:58 | 20m | - / - | RJ6OW | -8 / - | 3 | Partial capture |
| 08-09 09:32 | 20m | - / -18 | PD0RCQ | -1 / - | 5 | ✓ Closing fragment |
| 08-07 10:37 | 20m | - / -11 | RX7O | -8 / - | 2 | ✓ Closing fragment |
| 08-06 00:12 | 80m | -10 / -12 | Z62NS | +11 / -15 | 6 | ✓ Full exchange observed |
| 08-06 00:10 | 80m | -10 / -13 | YL3AVN | +17 / -8 | 5 | ✓ Full exchange observed |
| 08-06 00:07 | 80m | -5 / -15 | Z62NS | +10 / -13 | 8 | ✓ Full exchange observed |
| 08-05 23:52 | 40m | -4 / - | LW6DLS | - / -16 | 2 | Partial capture |
| 08-05 23:50 | 40m | -4 / - | RO5A | 0 / - | 3 | ✓ Closing observed |
| 08-05 23:49 | 40m | -3 / - | RD3FY | +6 / -9 | 3 | ✓ Closing observed |
| 08-05 23:47 | 40m | -3 / -20 | UK8OM | -9 / - | 2 | ✓ Closing observed |
| 08-05 23:34 | 40m | - / +7 | PA1PXL | +2 / - | 2 | Partial capture |
| 08-05 23:32 | 40m | - / -7 | SP0DF | -16 / - | 2 | Partial capture |
| 08-03 22:27 | 40m | - / -7 | G0GFC | -20 / - | 4 | ✓ Closing fragment |
| 08-03 22:22 | 40m | - / -8 | PA2KV | -3 / - | 3 | ✓ Closing fragment |
| 08-02 10:57 | 20m | - / -11 | PD4VL | +4 / - | 3 | ✓ Closing fragment |
| 08-01 10:43 | 20m | - / -11 | EC5M | -18 / - | 2 | ✓ Closing fragment |
| 08-01 10:35 | 20m | - / - | DL4JC | -16 / - | 2 | Partial capture |
| 08-01 10:35 | 20m | - / -14 | RQ7O | -5 / - | 2 | ✓ Closing fragment |
| 08-01 10:32 | 20m | - / - | R2ZO | -24 / - | 2 | Partial capture |
| 07-31 10:31 | 20m | - / -5 | F1PBZ | +2 / - | 4 | Partial capture |
| 07-31 10:31 | 20m | - / - | F4HSB | -9 / - | 4 | Partial capture |
| 07-30 10:55 | 20m | - / - | DH2RL | -5 / - | 3 | Partial capture |
| 07-30 10:39 | 20m | - / -8 | G0LUH | -19 / - | 4 | Partial capture |
| 07-30 10:38 | 20m | - / - | M7JVH | -8 / - | 4 | Partial capture |
| 07-30 10:34 | 20m | - / - | PD3LKN | -14 / - | 2 | Partial capture |
| 07-30 10:29 | 20m | - / -12 | F1PBZ | -11 / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 125230 -17 1709 K4RUM OS4K -14 125630 -3 2928 K4RUM PA3ANT -17 (x14)
UTC dB Audio Message 000400 -2 2937 G8FAT K4RUM -19 000430 -4 2936 CQ K4RUM FN30 000600 -3 2937 <...> K4RUM FN30 010145 -21 1375 K4RUM G5TV IO93 (x4) 010530 -6 2789 RJ6L K4RUM RR73 233815 +4 2988 <...> K4RUM FN30 (x2) 234045 +5 2987 TN8GD K4RUM FN30 (x5)
UTC dB Audio Message 000915 +9 890 K4RUM Z62NS RR73 000930 -9 888 Z62NS K4RUM R-13 000945 +10 890 K4RUM Z62NS RR73 001045 +19 505 K4RUM YL3AVN KO17 001100 -9 1002 YL3AVN K4RUM -08 001115 +15 504 K4RUM YL3AVN R-13 001130 -11 1002 YL3AVN K4RUM RR73 001145 -3 1003 K4RUM DL4DP JO31 001145 +16 504 K4RUM YL3AVN 73 001200 -11 1002 Z62NS K4RUM FN30 001215 +12 890 K4RUM Z62NS -12 001230 -10 1002 Z62NS K4RUM R-15 001245 +10 890 K4RUM Z62NS RR73 001300 -9 1002 Z62NS K4RUM R-15 001315 +12 890 K4RUM Z62NS RR73
UTC dB Audio Message 151330 -4 628 K4RUM PU2TNT -10
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.