[time-nuts] KS-24361 EFC Error

Bob Camp kb8tq at n1k.org
Wed Aug 12 07:13:48 EDT 2015


Indeed, there is a *lot* of difference between the REF-1 and the REF-0. Working out a clone of the two
could be a major undertaking. I’d only try it if there was nothing else on my schedule for the winter :)

It’s the observation that the ROM’s are likely identical that has me interested in the idea. *IF* that’s a correct
guess (and I have not verified it’s true with dumps), there must be jumpers that tell the board what it is and what
it does. There *could* be some interesting things that you can do with this or that jumper. 

One might correctly observe that if I’m pulling the ROM’s to cross check them, simply dumping them is a 
lot quicker way to figure some of this out than grabbing a soldering iron.

> On Aug 11, 2015, at 8:36 PM, Dan Rae <danrae at verizon.net> wrote:
> On 8/11/2015 4:09 PM, Bob Camp wrote:
>> For the very ambitious, start swapping ROM’s and GPS parts from the “dead” REF-1 over to the “live” REF-0.
> For what it's worth, I have a dead Ref-1 here that came to me with a dead power supply; that is now fixed but there seem to be other problems as well.  I looked at swapping over the gps parts from that to a new Ref-0 and very rapidly came to the conclusion that it was not a possibility, there's an awful lot of stuff different between the two units, especially underneath, maybe fifty components in total, although it does look as though the ROMs are the same, at least they have the same part numbers.
> Dan
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