Now you can get the power of the M.O.P.A. Amplifier with the powerful features of the GB4000. The MOPA amplifier was designed based on an in-depth analysis of the equipment used by the original frequency researchers.
Though it has been updated with modern electronics, it still uses the RF tank coil and 812a vacuum tube needed to produce the original analog sine wave and square wave output of the original equipment.
Includes the GB4000 and the MOPA Amplifier
Hands-Free operation, non-contact frequency delivery
Only system on the market that can output the 1930s/1950s frequencies
Built-in frequency counter for easy configuration
Comes with full 2 year warranty