Posts: 26
Threads: 10
Joined: Jan 2007
Has anyone done the crystal mod on an HP-45? I got one today (1973 model) which has the timer, and might as well put in a crystal. The doc on the site says you need a 784 KHz crystal. Is this correct? It is not a standard value and is not in the Digikey or Mouser catalog that I can find.
Mike
Posts: 562
Threads: 27
Joined: Oct 2006
Mike,
have you tried searching http://www.findchips.com/ ? I looked a few minutes, you are right a hard XTAL to find.
Posts: 172
Threads: 13
Joined: Jul 2005
Posts: 119
Threads: 13
Joined: Jul 2007
It's possible that Colorado Crystal (http://www.coloradocrystal.com/) will have some old crystals on the shelf. The place is just down the street from the HP Loveland site (which may no longer have HP as a resident) and engineers there may have had some crystals made for their HP 45s many moons ago. Good Luck!