Originally Posted by IBCrazy
No, it doesn't replace the first 1/4 turn. You can feed it in from any direction. Build the helix as normal, then add the match.
Height is defined as the distance from the reflector to the bottom most part of the stub.
The coaxial cable feeds directly into the stub, yes.
Ok, so helix distance from ground plane will be height of stub separation plus stub height (perpendicular from ground plane)? I think I got it.