Tetra Ham Documents
Copyright (c) 2020-2022 STTA, PA1WBU (author) and M0JIM (1st English translation).
Permission is granted to copy, distribute and/or modify these documents under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation;
with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
A copy of the license is included in the section entitled “GNU Free Documentation License”.
These documents come with ABSOLUTELY NO WARRANTY; They are free documents, and you are welcome to redistribute it for non-commercial purposes.