PLL Pro II Operating Principles

The NRG Kits PLL-PRO II was discontinued long ago, yet it is still seen driving powerful transmitter installations around the world because of it's superb stability. The present version is the PLL-PRO III, and although this version has set new RF standards, the main principles of operation still rely heavily on the original PRO II FM Transmitter.

The Legendary PLL PRO 2 FM Transmitter PLL design from NRG Kits