[time-nuts] advice for buying VCXO
altineller at gmail.com
Tue Oct 6 08:46:59 EDT 2015
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
Any recomendations for buying VCXO's that are surplus, and not ebay?
Thank you very much,
On Mon, Oct 5, 2015 at 11:48 PM, Jim Harman <j99harman at gmail.com> wrote:
> Only the first oscillator in your list is voltage controllable (VC). If you
> want to steer it with a GPS as we have been discussing, it needs to be
> voltage controllable.
> You will also want to consider the mounting and whether you are able to
> solder surface mount devices like the second one in your list.
> You will also need to consider what power supply voltage(s) you have
> available and whether you want sine or TTL output voltage.
> These parameters will narrow your selection considerably.
> Also if you have the power available you will get much better stability if
> the oscillator has an oven (OCXO) Pretty good surplus OCXOs are available
> for less than $25.00. With an OCXO you might also look for one that has a
> reference voltage output. If you can use this voltage to power the analog
> part of your tuning circuitry, you won't have to worry about the effect of
> power supply stability on that portion of your system.
> The stability of any surplus oscillator is pretty much a crap shoot. You
> can get them cheap but you might have to sort through a few to find one
> that is good enough for your purposes..
> On Mon, Oct 5, 2015 at 8:22 AM, Can Altineller <altineller at gmail.com>
> > Hello,
> > I am want to buy some VCXO's but really simple and cheap ones. I
> > a quote from goledge.com and their prices are around 180GBP per unit,
> > I
> > dont want to pay that much given you can buy a rubidium standard for
> > comparable prices.
> > I looked on ebay and found those candidates:
> > The third one is nice, it says 0.3ppm, but I am not sure if the specs are
> > true.
> > Any recomendations on where to source cheap vcxo or vctcxo's? 10mhz or
> > mhz is ok, and <1ppm would be nice.
> > Best regards,
> > C.A.
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