[time-nuts] 10 MHz low pass filter

[Joseph Gray]

I thought I'd put one on a FE-5680A and see what happens to the third
harmonic. It might also be interesting to see if I get a decent sine
wave out of the filter with a square wave in.

Joe Gray
W5JG

On Wed, Jun 20, 2012 at 3:49 PM, Bob Camp <lists at rtty.us> wrote:
> Hi
>
> That's a pretty high order filter. The output of most OCXO's already has a filter on it. Combining two filters (especially high order ones) without isolation between them is not a good idea. The resulting transfer function will not be what you expect it to be….
>
> Bob
>
> On Jun 20, 2012, at 4:54 PM, Joseph Gray wrote:
>
>> I came across this filter design recently and thought I'd build a few.
>>
>> http://www.jwmeng.com/AppNote/AppNote003.html
>>
>> I was about to place a Mouser order when I came across someone selling
>> filters, based on the above design.
>>
>> http://www.ebay.com/itm/10-MHz-filter-kit-for-tcxo-gps-pll-/110893777470
>>
>> The price with a board seemed low enough that I ordered a few. I'll
>> let everyone know how they work out.
>>
>> Joe Gray
>> W5JG
>>
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