https://www.davek.org/ 2026-05-12T21:07:36+00:00 https://www.davek.org/ https://www.davek.org/_media/logo.png text/html 2025-02-01T05:20:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.davek.org/blog/2024/0517_amprd_on_fedora_40?rev=1738387205&do=diff 44net: amprd IPIP on Fedora 40 (EDIT: correct recommended subnet mask for 44. Of course it's no longer /8. It should be within either 44.0.0.0/9 or 44.128.0.0/10.) The amprd package installs directly from the fedora repository. The configuration is straightforward, however getting firewalld and NetworkManager configured is a little tricky. text/html 2025-04-18T16:34:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.davek.org/blog/2024/1111_arrl_fmt_setup?rev=1744994053&do=diff ARRL FMT setup (edited after 2025-04-17 fmt) The ARRL runs a neato contest twice a year - the Frequency Measuring Test (FMT). The objective is to measure a transmission's unknown frequency as accurately as possible. There are 4 transmissions: 2 different geographical locations on 2 different bands (40m and 80m). The tests are run in the evening when the ionosphere is changing which adds an unpredictable element (doppler shift) to the results. Like any good