[BC] Early Rigid Coaxial line

[Stanley Adams]

Much of the very early hard line was made by RCA Products Division, which
included their antenna lines.  This was later spun off and became the
Prodelin Company.  Prodelin is still in business as part of the General
Dynamics Gabriel, Prodelin, CSA/Jay Antennas line.  Alsimag (American Lava)
in Chattanooga, TN. made those steatite insulators.

Mr. Andrew of Andrew Electronics also made some rigid transmission line
sections and furnished some of the early post WW 2 FM antenna bays.
They also used Alsimag components.

http://www.antiquewireless.org/otb/alsimag.htm


Stanley Adams
Memphis