[sdiy] Black Magic oscillator cans

[Tim Ressel]

Hey all,

Thanks for all the responses. What a group! Now that I
think about it, It's kinda hard to tune a crystal so
your gear is in tune with someone else's. Maybe its
time for an adjustable oscillator. Someone mentioned
an LC oscillator. I think I have an adjustable cap
somewhere.

Thanks all!

--tr


--- Glen <mclilith at charter.net> wrote:
> At 06:25 AM 7/20/03 , Ken Stone wrote:
> 
> >BTW, that tiny difference between 2MHz and what you
> want is probably
> >less than the tollerance/drift of a lot of
> oscillators to start with, and
> >well outside what a human ear can distinguish.
> 
> It's not outside the what a human ear can
> distinguish--IF were are
> comparing two signals at the same time--one of which
> was generated by a TOG
> driven at 2.00000 MHz and another driven at 2.00024
> MHz. If my calculations
> are correct, the ubiquitous A440 would exhibit a
> beating of once every 19
> seconds. I know that's not objectionable for most
> purposes, and might even
> be desirable, but the point is that it *is* audible.
> Depending on exactly
> what you want to do with your TOGs, this amount of
> error might not be
> acceptable, but for most cases is probably
> tolerable.
> 
> 
> later,
> Glen Berry
> 


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