Dan Fredell's 4 channel design uses a 20mhz clock

On Thu, Aug 25, 2016 at 1:01 AM, Jake <jake@spaz.org> wrote:

send links along with claims like this

On Wed, 24 Aug 2016, robb wrote:

and
 why do you need a 20MHz crystal?
apparently you need 20mhz for 4 stable channels when using the timer method