[time-nuts] Equipment question: OCXO versus GPSDO + XTAL

[paul swed]

The last answers actually the best considering the base system initial
investment. If you are in that league a TBolt is not much at all.

On Thu, Mar 17, 2011 at 10:30 PM, J. L. Trantham <jltran at att.net> wrote:

> Personally, I would get both.
>
> Joe
>
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of J. L. Trantham
> Sent: Thursday, March 17, 2011 9:24 PM
> To: 'Discussion of precise time and frequency measurement'
> Subject: Re: [time-nuts] Equipment question: OCXO versus GPSDO + XTAL
>
>
> Depends on what you want.  Stability or accuracy?  Bench or portable?  The
> TBolt or another GPSDO will certainly be accurate.  Probably fairly stable
> as well.  However, if you need portability, the OCXO is the only way to go.
> You will have to look at the stability measurements of the OCXO versus the
> GPSDO to choose that one.
>
> Joe
>
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Wolfgang
> Sent: Thursday, March 17, 2011 8:51 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Equipment question: OCXO versus GPSDO + XTAL
>
>
> On Friday 18 March 2011, Greg Broburg wrote:
> > I have a 53131 and 53181. There were several TB options.
> > I dont have a manual for the 53230A. If you could, see what the option
> > TB assembly PNs are, then go looking for these assemblies. Mine just
> > dropped in and did the autocal right off. I paid 300 to upgrade the
> > 53181. The autocal using a DAC works very well, no more tweaking Rs or
> > Cs and waiting a day for them to restabilize.
> >
> Don't recall where I read this but IIRC:
>
> There are several other options for the 53230A which can be added lateron
> by the user ("kits") but the OCXO can only be installed lateron by sending
> the device to service.
>
> Thanks to the list for the answers - but:
>
> It seems like everybody is telling me "go for the cheaper, add the OCXO
> lateron if you need it" - but that's not what I'm after. What I'd really
> like to do is to make up my mind based on educated opinions on this list
> whether the built-in OXCO option offers any advantage at all compared
> to standard clock + good external reference.
>
> - Wolfgang, DL1SKY
>
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