For medium wave, every ham who transmits with a base excited vertical radiator should get a copy of _Radio-Electronic Transmission Fundamentals_ by B. Whitfield Griffith, Jr. 2nd ed., Noble Pub. Co., Atlanta Ga., c2000, ISBN 1884932134. 638 p. Griffith is a retired principal engineer with Continental. This classic college broadcast engineer textbook explains many fundamentals involving medium wave transmission in an easy to understand way. Getting the most out of your valuable copper wire is more important now than ever because copper has risen to insanely high prices.
The book is probably out of print but might be available used from ABE Books https://www.abebooks.com/ 73 Rob K5UJ _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector