Profile: M. H. Electronics is a manufacturer of crystals, quartz crystals, radio crystals, pager crystals, amateur crystals, xtal, piezoelectric crystals, and electronic component crystals for the electronics community. Our communication crystals cover the frequency spectrum from AM broadcast through microwave. We also produce crystals for data acquisition, data processing, and data transfer, as well as microprocessor based equipment. We have two styles of surface mount crystals. The Surface Mount type crystals are resistance welded hermetically sealed in a nitrogen or vacuum atmosphere. Each configuration is ideal where a precision, low profile crystal is required. The MH-11 is available in a frequency range of 4 to 150 Mhz.