[time-nuts] Oncore question

Brian Kirby kirbybq at bellsouth.net
Sat Nov 22 10:24:48 UTC 2008


check http://www.synergy-gps.com/content/view/42/89/  the article on 
battery backup has some info on this....


Brian KD4FM


Morris Odell wrote:
> Hi Fellow Nuts,
> 
> I've been following the thread on parsing the Motorola receiver code with
>  great interest. I have written AVR code to do this but have not gone to
>  great trouble making it bullet proof as it was a non critical application 
> in
>  a Nixie clock. I programmed the receiver to send only one message, and then
>  looked for the @@Ba string before I started counting bytes. I used the
>  number of SVs byte to decide whether the data was good. Worked fine for me!
> 
>  I'm about to start another project with an Oncore so maybe I'll experiment
>  with a more complex program this time.
> 
>  My question relates to the older Oncore VP receivers. I have one which had 
> a
>  dead memory battery. The receiver has an on-board battery charger for a
>  rechargable Li cell but they are very hard to find down here. In the past
>  I've used a conventional Li cell with a schottky diode to prevent the
>  charger from forcing current down it's throat. I was wondering if there's
>  any reason not to use a super cap. I only need it to support the memory for
>  very short periods during power burps. Will the on-board charger be OK for 
> a 1F
>  super cap?
> 
> Any help or opinons much appreciated
> 
> Thanks,
> 
> Morris 
> 
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
> 




More information about the Time-nuts_lists.febo.com mailing list