[time-nuts] Ashtech Z12 question.
Brooke Clarke
brooke at pacific.net
Fri May 11 13:18:40 EDT 2018
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.
I have a gut feeling that applying oxygen free silicon grease before reassembly might be a real fix, but don't have
enough data to make the claim.
2. Capacitors go bad. Electrolytic caps essentially become open circuits and can do that without any indication of a
problem. Other times caps fail and cause very noticeable problems for adjacent components. So a visual and nasal
inspection is the fist step. An ESR meter is the second step.
http://www.prc68.com/I/HaT.shtml#CF
--
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
-------- Original Message --------
> 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 stop tracking right in the middle of the
> session with no nearby events or configuration changes?
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