Feb 28, 2011 | http://www.pdixtal.com/news/high-frequency-inverted-mesa-filters/
PDI’s new Inverted Mesa IM series 5700 series high frequency, 2-pole crystal filters were designed for rugged environments, especially for military and avionics applications. With a frequency range from 60 to 250 MHz (fundamental), it’s ideal for HF radio applications using DSP technology. Its small size replaces the current thru-hole, 2-pole filter used as roofing devices.
