[time-nuts] Z3801 Replacement GPS Receiver Card

[paul swed]

As Bob mentions there may be more to it then just nailing that particular
command.
But worth taking a look after I deal with the wwvb psk issue. As far as the
5 to 3 V I would just use a 3 term reg like the cherry semi chip. But there
are plenty of alternates. It will take 5 in and give 3.3 out at plenty of
current.
I think the discussions useful as to exactly what the correct new rvcr
would be that is available and for $5. ;-)
Regards
Paul


On Sat, Sep 15, 2012 at 9:09 PM, Chris Albertson
<albertson.chris at gmail.com>wrote:

> On Sat, Sep 15, 2012 at 11:11 AM, paul swed <paulswedb at gmail.com> wrote:
> > I also have a z3801 so perhaps I will face the same issue at some point.
> > The question I have is the following.
> > If a uproc is inserted between the rcvr and the chassis to intercept the
> > init command.
> > Then respond back with whatever the response might be and then simply
> pass
> > through in both direction whatever comes next.
>
> The could be a pretty huge upgrade.  Enough maybe to just replacing
> working GPS cards.  The newer Oncores have 10X or more better
> performance.  You uP would have to introduce a small delay but not
> much if it is just passthrough data.  The latest GPSes run on 3 volts
> rather than 5.  It might be worth building a DC/DC converter on the
> same card as your uP because the new 3V GPS are that much better.
>
> Chris Albertson
> Redondo Beach, California
>
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