Re: [amsat-bb] Lindenblads

On 09/17/2014 11:51 AM, Robin Midgett wrote:

And yes, the sense of a single Lindy can be changed if the elements are mechanically rotated in phase with one another about the Z axis.

Similarly, the sense of an axial-mode helix can be changed by simply unwinding the helix and winding it back in the other direction. Some would call this "rebuilding the antenna", rather than "switching the polarity", but I am not one of those.