The “RMC” was designed specifically for applications requiring an “MC” type tuning capacitor with very rigid construction. Its sturdy frame consists of heavy gauge aluminum end panels held together by three aluminum tie rods. It has a brass sleeve front bearing and a single ball thrust rear bearing, for smooth tuning and a high degree of resetability. The rotor contact is a forked silver-plated phosphor bronze spring wiping against a wide disc on the rotor.
The plate shape and other constructural features are the same as on the “MC.” Tapped holes in front panel and in mounting feet, as well as additional brackets for inverted mounting allow a wide variety of assembly methods. “M” type plates and ball-bearing construction can also be made available as specials.
Straight line capacity. Air Gap is 0.0245″ nominal. Tested at 1000 V.R.M.S., 60 hertz.