[Hallicrafters] New QTH

[Jim Brannigan]

> Best way to get 450 ohm ladder line out of the shack
> is to use two feed through insulators, through the
> wall or  through a 2x4 inserted across the bottom of a
> window if you don't want to drill holes.  The best
> ones to use are the beehive type if you can find them.
>  Smooth ones collect a lot of moisture and may flash
> over with really high power, or high RF voltage on the
> line, as a result.

Agree with the above.....Since you have new construction use threaded rod
long enough to reach through the wall (2X4 +) and either insulate the rod in
the wall or leave a space in the insulation.
Use caulk on the base of the insulators to seal.
See an old Handbook for a outside base attachment and spring loading.  See
also for lightning protection.

For Coax entrance use PVC pipe   The pipe diameter should be able to pass
the outside diameter of a bundle of coax connectors.(figure present
requirements plus any future expansion)

On the outside use a 90 degree elbow, pointed down.  Stuff the pipe with
insulation or expandable foam.

Jim