Has anybody source or information about low frequency crystal ors resonators? All seems to make above 3 MHz or 32 kHz. There is 455 kHz resonators, but I would like to use right one for my new Hart protocol modem for pressure sensor Sorry for OT Pekka -- Probyte Oy Software/hardware design works. Tampere, Finland http://www.sci.fi/~pri email:pri@sci.fi phone int+358-3-2661885 fax: -2661886