[hpsdr] Obstreperous crystal

[W4sc]

One way is with a divide by 3 divider.  constructed with J-K FF.,, 33% duty 
though.
de W4SC

----- Original Message ----- 
From: "Chris Day" <scotstramp at msn.com>
To: <hpsdr at lists.openhpsdr.org>
Sent: Friday, December 11, 2009 5:09 PM
Subject: Re: [hpsdr] Obstreperous crystal


> ***** High Performance Software Defined Radio Discussion List *****
>
>
> Oh, drat. The product sheet does say that this xtal line works at the 
> fundamental until 27 MHz. So now to figure out how the FX2 is dividing it 
> by three. Sigh.
>
>
> Chris Day
> AE6VK
>
>
> ----------------------------------------
>> Date: Fri, 11 Dec 2009 14:03:11 -0700
>> From: nu8i at cox.net
>> To: scotstramp at msn.com
>> CC: hpsdr at lists.openhpsdr.org
>> Subject: Re: [hpsdr] Obstreperous crystal
>>
>> Chris Day wrote:
>>> ***** High Performance Software Defined Radio Discussion List *****
>>>
>>>
>>> I'm still trying to track down why my Ozy doesn't seem to work properly 
>>> anymore, and I'm accumulating evidence that it's 24 MHz xtal has taken 
>>> it into it's head to oscillate at the fundamental of ~8 MHz instead of 
>>> the third overtone. Anyone have any suggestions on how to convince it 
>>> to return to it's proper behavior? Thanks.
>>>
>>>
>>>
>> It would be unusual to use an overtone crystal at 24Megs. Fundamental
>> mode units go up WAY beyond that nowadays.
>>
>> 73 Alf NU8I
>> Scottsdale AZ DM43an
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