[time-nuts] Ashtech Z12 question.

The "new" Z12 from Ebay came in today. Works fine (except bad memory backup batteries). So antenna, power supply, cables are OK. Replacing the memory backup batteries is fairly easy, except for the gazillion and three screw to open it up. A pair of memory batteries costs around $15. I

Re: [time-nuts] Ashtech Z12 question.

Hi Mark: I've found there are two main reasons older equipment stops working. 1. A metal to metal joint that's supposed to be conductive is not. See Hints & Tips: What Goes Wrong: http://www.prc68.com/I/HaT.shtml#Wgw The fix is simply to disassemble, cycle all joints a few times and reassemble.

[time-nuts] Ashtech Z12 question.

Antenna is good... it is feeding an HP amplified splitter which goes to 7 other receivers. And yes, it died in the middle of a run. I have another Z12 coming from Ebay... -- > Rats. Is the antenna known to be good? Is the Z12 providing bias on the antenna cable? Did the Z12

Re: [time-nuts] Ashtech Z12 question.

> Well, my Z12 stopped tracking sats yesterday. It passes all self-tests. > I then replaced the memory backup batteries... it fixed the bootup error > problem, but still won't track sats. > Rats. Is the antenna known to be good? Is the Z12 providing bias on the antenna cable? Did the Z12

[time-nuts] Ashtech Z12 question.

Well, my Z12 stopped tracking sats yesterday. It passes all self-tests. I then replaced the memory backup batteries... it fixed the bootup error problem, but still won't track sats. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe,

Re: [time-nuts] Ashtech Z12 question.

> > Does the Z12 have an internal memory backup battery? Yes, there are two lithium thionyl chloride cells, Tadiran TL-5104. They are 3.6 V primary cells, cylinders roughly AA in size, with spot-welded axial leads. That part is obsolete, but Digikey has an equivalent, TL-5903/P, which worked

Re: [time-nuts] Ashtech Z12 question.

Hi What you describe sure sounds like a ram battery died sort of thing. I’ve never noticed one in the boards I’ve torn apart. I’d also admit that was a few years back …. Bob > On May 6, 2018, at 6:12 PM, Mark Sims wrote: > > I just added support for the Z12 to Lady

[time-nuts] Ashtech Z12 question.

I just added support for the Z12 to Lady Heather and fired up my Z12 for the first time in a few years. It powers up in some kind of a weird loopback mode and you have to reset the receiver memory to get it working. Does the Z12 have an internal memory backup battery? Mine is currently