[time-nuts] Jupiter GPSDO

[Ed Palmer]

ashley40 at aol.com wrote:
> Hello..... We built the " 10mhz simple GPSDO from boards supplied by G3RUH. (Using the Jupiter GPS receiver)
> Questions:
> Has anyone built one, 
> How well does it work
I haven't built one, but people who have say its performance is 
comparable to commercial units.  Check out 
http://www.leapsecond.com/pages/gpsdo .
>  
> How exactly is the RS232 output connected to a XP computer ?
> Is the RS323 /software protocol the only way to tell if this thing is actually working ?
> We are using a trimble ( new) active antenna, mounted with a clear view of the sky. 
> Does this Jpiter receiver need to be reset before use ? 
> How do we tell if we are in a location that is in view of satellites ? 
>   
The more sky you can see, the better.  If you only have a clear view of 
the northern sky you could have problems.  The GPS satellites' orbits 
result in a large hole over the poles.  See 
http://www.realhamradio.com/images/GrahamGPS.jpg and 
http://www.ae.utexas.edu/courses/ase389p7/projects/svatek/images/skyplot3.jpg 
.

There's lots of info online on the Jupiter board and software and 
hardware addons for it.  It's a very popular unit.

> Reply off list is just fine...  The truth is, we are a bit frustrated with all of this gps business, and wonder if its worth any more time . Sorry for the long list of grumblings. 
>   
There's always that darn learing curve with a technology that's new to 
you.  Stick with it.

Ed
>    
> Thank You
> Kiss-Electronics
> Ms Ashley Hall
> 183 N 5th Avenue
> Cornelius, Oregon
> 97113
>  
>  
> W7DUZ
>  
>  
> www.kiss-electronics.com
>
>