[time-nuts] GLONASS receiver

Bob Camp lists at rtty.us
Mon Aug 6 00:31:57 UTC 2012


Hi

The original post was talking about the raw OCXO spec's on the GPSDO cited by the originator of the thread. It's not a very tight spec part.

Bob

On Aug 5, 2012, at 8:28 PM, Magnus Danielson <magnus at rubidium.dyndns.org> wrote:

> On 08/06/2012 01:27 AM, Bob Camp wrote:
>> Hi
>> 
>> If the OCXO is off by 200 ppb, it will slip time by 200 ns per second.
>> 
>> It will be off by a *lot* more than 200 ns at the end of a year. Compared to the spec's on a cell tower OCXO, 200 ppb per year isn't very good...
> 
> Many cell applications require 50 ppb.
> 
> Cheers,
> Magnus
> 
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