[sdiy] frequency counter

[Ian Fritz]

At 07:22 PM 6/26/2004, mark verbos wrote:
>What crystal frequency did you use to get an A440? I have been tinking 
>about this over the last week and haven't seen any that seemed right for it.


Hi Mark --

I used a 4.40 MHz xtal and an RF oscillator kit that I got from places that 
used to advertise in ham radio magazines.  This was many years ago, so 
probably they aren't around any more.  But I think last time this came up I 
was able to find someplace on the www that would grind custom xtals.

   Ian