The LGL Group, Inc., together with its subsidiaries, engages in the design, manufacture, and marketing of frequency and spectrum control products in the United States and internationally. The company operates through two segments, Electronic Components and Electronic Instruments. The Electronic Components segment offers clock oscillators, VCXO, TCXO OCXO, and DOCXO devices; and radio frequency, microwave and millimeter wave filters, diplexers, and solid-state power amplifiers.