Attn: Crystal Filter Designers

[W3JDR]

I just posted "CrystalCalc" to the Downloads section of my web site
(http://mysite.verizon.net/jdrocci/).

This nifty little Windows program calculates all the important motional
parameters of a quartz crystal with information derived from a few simple
measurements. Those of you who are designing crystal ladder filters per the
Hayward (W7ZOI) or Hardcastle (G3JIR) methods might find this very useful.

This is first-cut code. I'd appreciate feedback.

Joe
W3JDR

[The Eternal Squire]

Try placing the output of your crystal filter through a capacitive divider
back to the input. You'll get plenty of feedback that way! :)

The Eternal Squire

W3JDR > wrote in message
...
> I just posted "CrystalCalc" to the Downloads section of my web site
> (http://mysite.verizon.net/jdrocci/).
>
> This nifty little Windows program calculates all the important motional
> parameters of a quartz crystal with information derived from a few simple
> measurements. Those of you who are designing crystal ladder filters per
the
> Hayward (W7ZOI) or Hardcastle (G3JIR) methods might find this very useful.
>
> This is first-cut code. I'd appreciate feedback.
>
> Joe
> W3JDR
>
>


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[The Eternal Squire]

Try placing the output of your crystal filter through a capacitive divider
back to the input. You'll get plenty of feedback that way! :)

The Eternal Squire

W3JDR > wrote in message
...
> I just posted "CrystalCalc" to the Downloads section of my web site
> (http://mysite.verizon.net/jdrocci/).
>
> This nifty little Windows program calculates all the important motional
> parameters of a quartz crystal with information derived from a few simple
> measurements. Those of you who are designing crystal ladder filters per
the
> Hayward (W7ZOI) or Hardcastle (G3JIR) methods might find this very useful.
>
> This is first-cut code. I'd appreciate feedback.
>
> Joe
> W3JDR
>
>


---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.564 / Virus Database: 356 - Release Date: 1/19/04