[time-nuts] Z3805A: How correct a 1024 week date error?

Bob Camp kb8tq at n1k.org
Mon Dec 1 20:20:48 EST 2014


The unit will do just fine as a frequency / pps standard with the date error. 

I believe the answer is a re-flash of the firmware in the GPS module. The first step there is to figure out which module you have. If it’s a Motorola you may be in luck. If it’s a Furono, you may be out of luck.


> On Dec 1, 2014, at 7:39 PM, James Robbins <jsrobbins at earthlink.net> wrote:
> I've acquired a "Z3805A converted to a 58503A" which, notwithstanding tracking, seems to believe that it is "17 March 1995".  I believe this is the famous "1024 week" issue.  Does anyone know how to spring the unit from it's historical bonds and get it to read the current date.  I have tried commands (via GPSCon) to do a factory reset and to enter the date manually, but without success.  Any experience would be appreciated.  Jim Robbins, N1JR
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