The LGL Group, Inc. is a holding company. The Company operates through its subsidiary, M-tron Industries, Inc., which includes the operations of Piezo Technology, Inc. and M-tron Asia, LLC (collectively, MtronPTI). The Company operates through electronic components segment, which includes all products manufactured and sold by MtronPTI. MtronPTI designs, markets and manufactures frequency and spectrum control products. MtronPTI's portfolio is divided into two product groupings: Frequency Control and Spectrum Control. Frequency Control product group includes a portfolio of clock oscillators, voltage-controlled crystal oscillator, temperature compensated crystal oscillator and oven-controlled crystal oscillator. Spectrum Control product group includes a range of radio frequency (RF), microwave and millimeter wave filters and diplexers covering a frequency range from 1 megahertz (MHz) to 90 gigahertz (GHz), and solid state power amplifiers.