[Elecraft] The use of a doublet

[d.cutter at ntlworld.com]

Can anyone point to why the single coil Z match wasn't commercialised rather than the T match?  (Perhaps it's a historical thing and manufacturers just copy each other, notwithstanding the Johnson Matchbox of course, which is no longer produced.)

I'm in process of building one to cover 160 to 10 from VK2BR (?).  I'm hoping that the link coupling will help with "balanced" feeders and antennas, though one side is bound to have more capacitance to earth than the other, so "balanced" is fairly relative.

David
G3UNA