Yuri, K3BU quoted K4IA:
"According to ON4UN-linear loading can be made virtually loss free (pg
9-39)."

ON4UN does say that but the page is different in my copy of "Low-Band
DXing". Mine is the 2nd edition. On page 9-39 are SWR curves versus
frequency for the vertical top-hat loaded antenna on page 9-37.

Perhaps a better idea of "linear loading" may be seen in Fig 9-27 on
page 9-19 of edition no.2. The subscript reads:

"Since no coils are used in this form of loading (a zig-zag in the
radiator length), linear loading cam be used with almost no loss."

Best regards, Richard Harrison, KB5WZI