Topband: 160 m inverted L

[Rob Atkinson]

A vacuum variable for L impedance matching is unnecessary.  Vacuum
variable capacitors leak eventually.  It take a long time for them to
go through their ranges and you have to have the mechanics outside if
you perform remote tuning, to sense or count turns to track when the
v.v. is nearing its maximum or minimum.  It is far far easier and
faster to use an air variable that rotates freely.  You only need to
keep it sheltered.

Elevated radials are fine provided they are high enough to be
decoupled from earth, which for most hams is difficult to accomplish
on 160 m.

73

Rob
K5UJ