[Milsurplus] Re: Ongoing hf command antenna

[Unserviceable but Repairable]

This is long ovderdue, mea culpa

Clete u sed on 04.05--->


} End fed wires radiate, whether they're on the top
} of an aircraft or not.  A wire is a "capacity hat"
} if it's fed near the center so that the fields on
} both sides, being of oposite polarity, cancell each
} other.  

That has merit over low-conductivity ground.  See pic of SAQ Sweden's
17kc Alexanderson.  Only uplead fm center radiates, mile of towers 
support capacity hat... tho it's not evident SAQ operators perceive it.

But above a conductive (metal) surface, not the same.  Here the 'horizontal
component' becomes conductor in a transmission line where it's
mate is the math image beneath.  Capacity is conductor-to-surface.

Ships used off-center cap-hat / xmt-line principal @ 500kc since 
before Titanic.  At least steel ones.

}        Some aircraft and shipboard wire antennas
} don't have a "vertical" section.  They just come
} outside and go straight off to whatever supports
} the other end.  

Sure true as AAFradio points out on B29.  HF antenna goes fm under
wing root to end of one horiz. stab.  Here the "riser" is just
turned 90 deg.s.  Perfect ground is plane's hull.

Etc.

This ain't all my doin.'  A Einstein once sed "genius is knowing who
to ask."  I sure ain't a genius but in this one case, know a willing &
educated ear.

  'rm