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'Hart modem crystal or resonator 460.8kHz [OT]'
1999\08\05@061707 by Pekka Ritamaki

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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:spam_OUTpriTakeThisOuTspamsci.fi
phone int+358-3-2661885 fax: -2661886

1999\08\05@095110 by Barry King

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> All seems to make above 3 MHz or 32 kHz.
Epson, for one, makes a whole range of tuning-fork-mode crystals
from 32kHz to about 150 kHz.

Transverse mode (strip) crystals start at about 1 MHz.  So you might
need a divide by 2 or 4 to get into the 200 kHz to 1 MHz range.

What freq do you need?

------------
Barry King, KA1NLH
Engineering Manager
NRG Systems "Measuring the Wind's Energy"
Hinesburg, Vermont, USA
http://www.nrgsystems.com

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