[Antennas] Inductor cleaning

[Richard Brunner]

Re:
"> A Butternut vertical should be adjustable to give a good match for
> whatever bands it is designed for (i.e., HF6V, 80, 40, 20, 15, 10, 6;
> HF9V above plus 30, 17, 13).  It can be tricky (interactions) but with an
> MFJ antenna analyzer, and assuming proper grounds (or ground plane
> radials if above ground) you should be able to get an acceptable match
> across all bands except for 80, which gives about 100 KHz width for 2:1
> SWR. ..."

Yes!  All true!  I used a Butternut HF9V for 12 years and it is a most
excellent antenna.  The only caveat is it must be adjusted in place, or you
won't live long enough to finish if you take it down, adjust it, put it up,
etc.  Mine was mounted up 10 feet from the ground on a 4x4, and to adjust it
I made 4 foot high sawhorses, put planks across them, and used an 8 foot
wooden (important) ladder on top.  There is not much interaction between
adjustments, but they are critical, for example, the coils cannot be
deformed too much.  It is not a world-beater on 160M, but I had many
contacts, and on 80M and up it works very well.  My first contact on 80 was
a G3, 30 was Australia, and on 15 I worked the Antarctic through a pileup on
the first call.

Richard Brunner, AA1P