This Optima MA-14LTE
masthead amplifier kit combines a variable gain 1 way masthead
amplifier with a power supply. The power gain can be adjusted from
4-14dB via a gain switch on the amplifier itself.
The connection for these amplifiers (and the power supply) re F-Plugs. F-plugs are ideal if you want a connection that is super-secure. An F-plug coaxial connection screws on.