[time-nuts] advice for buying VCXO

Bob Camp kb8tq at n1k.org
Tue Oct 6 18:05:24 EDT 2015


Hi

If you are looking for a temperature stability of better than 1 ppm, then the device
you are looking for is a VCTCXO. They are more commonly listed as a TCXO. 
That’s because most TCXO’s these days have a voltage control input. 

A quick check on the Mouser site shows 103 items that are stocked in various 
stabilities. Running against a TC of <= 1 ppm knocks that down to 14 items.

Bob

> On Oct 6, 2015, at 3:46 PM, Can Altineller <altineller at gmail.com> wrote:
> 
> Hello,
> 
> I was hoping for a cheap VCXO. I think those ovenized ones are more
> expensive.
> 
> Where would I get a brand new VCXO, that has < 1ppm, and specs that are
> true. (as in the declared spec would match the actual performance, these
> days when we buy from ebay, or aliexpress this is hardly the case)
> 
> Best regards,
> -Can
> 
> On Tue, Oct 6, 2015 at 8:22 PM, Jim Lux <jimlux at earthlink.net> wrote:
> 
>> On 10/6/15 5:46 AM, Can Altineller wrote:
>> 
>>> Hello Jim,
>>> 
>>> Yes i need a VCXO or even a VCTCXO. However when I search them on ebay,
>>> unfortunately, since they included every term for XO, I am lost in the
>>> noise.
>>> 
>>> Any recomendations for buying VCXO's that are surplus, and not ebay?
>>> 
>>> 
>> 
>> 
>> do you want a Ovenized VCXO? or any VCXO? Is there a particular
>> performance you need?  There's lots of inexpensive brand new VCXOs
>> available.
>> 
>> 
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