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Thanks a lot for your time and hints!! Yesterday afternoon/evening I did some more tests. (dummyload instead antenna; battery driven equipment; psu driven equipment; other computer) For me it looks like the problem is kernel and/or chipset related - because using a Raspberry running jtdx on 10m works without any problems. I'll do some more tests with other systems. Cheers, Torsten PS: Current system (information generated by inxi): System: Host: lab Kernel: 6.1.0-18-amd64 arch: x86_64 bits: 64 Desktop: LXDE v: 0.10.1 Distro: Debian GNU/Linux 12 (bookworm) Machine: Type: Desktop Mobo: AZW model: MINI S v: 10 serial: <superuser required> UEFI: American Megatrends LLC. v: ADLNV104 date: 02/06/2023 CPU: Info: quad core Intel N95 [MCP] speed (MHz): avg: 800 min/max: 800/3400 Graphics: Device-1: Intel Alder Lake-N [UHD Graphics] driver: i915 v: kernel Display: x11 server: X.Org v: 1.21.1.7 driver: X: loaded: modesetting unloaded: fbdev,vesa dri: swrast gpu: i915 resolution: 1440x900~50Hz API: OpenGL v: 4.5 Mesa 22.3.6 renderer: llvmpipe (LLVM 15.0.6 256 bits) Network: Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet driver: r8169 Device-2: Intel Wireless 7265 driver: iwlwifi Device-3: Intel Bluetooth wireless interface type: USB driver: btusb Drives: Local Storage: total: 238.47 GiB used: 61.66 GiB (25.9%) Info: Processes: 185 Uptime: 1d 8m Memory: 7.54 GiB used: 943.6 MiB (12.2%) Shell: Bash inxi: 3.3.26 Am 13.03.2024 um 20:01 schrieb AB9LM: I had the same issue for a while. I tried snap-on ferrites on everything, but that didn't help in my case. I finally made a proper choke with 14 turns of coax on a ft-220-43 -- Nipped it in the bud for good. |