[time-nuts] new GPSDO kit

Tim Shoppa tshoppa at gmail.com
Sat Apr 5 12:58:00 UTC 2014

Holdover requirement of 2 days I'm sure made sense for the Telco-purchased
GPSDO's intended to be on 24x7x365 at cell base stations e.g. Z3801A. I'm
guessing 2 days would be how long it would take them to get a crew there to
replace a broken GPS antenna and they figured the extra cost of the OCXO
was worth it.

The USB-powered TCXO GPSDO's are clearly not aimed at that market. They
seem to me, to be pocket-portable units that travel with a crew and are
designed to come on quickly, acquire and lock to an antenna maybe just
stuck to a window, and deliver accurate pps or 10MHz as references for
non-telco uses.

On Fri, Apr 4, 2014 at 7:50 PM, Dr. David Kirkby <drkirkby at gmail.com> wrote:

> On 4 Apr 2014 23:39, <SAIDJACK at aol.com> wrote:
> >
> > Hello everyone,
> >
> > sorry for the plug, but we just announced a new $568 complete GPSDO
> > reference kit.
> Given the low power consumption I assume that this doesn't use an oven.
> That means if it does lose GPS lock, the frequency is going to drift much
> faster than other units.  Or does it stop producing 10 MHz if it loses
> lock?
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