Crystal-Free Operation. (No Crystal needed to change frequencies)

The frequencies of most transmitters and receivers are adjusted by replacing the crystals. Enthusiasts who want to change frequencies must purchase extra crystal sets to prevent interference between the same frequencies. To complicate matters further there are so many types of crystals based on modulation (FM/AM,PPM/PCM) conversion type (Single/Dual) and Radio makers.
To solve this problem, Proton Control Systems adapted PLL (Phase-Locked Loop) technology to Husky transmitter and Ken receiver. The preferred frequencies and countries (European version only) are digitally selectable from menu simply by pressing buttons.