[time-nuts] GPS Antenna Feed Line Decision

Mark Spencer mark at alignedsolutions.com
Mon Sep 4 19:39:07 UTC 2017


Although not time nuts related I believe this document speaks to some of the practical issues...

http://www.slac.stanford.edu/cgi-wrap/getdoc/slac-pub-6297.pdf



Mark Spencer


mark at alignedsolutions.com

> On Sep 3, 2017, at 4:56 PM, Mark Sims <holrum at hotmail.com> wrote:
> 
> Real time nuts run phase stable cable (some well over $50 / foot) in climate controlled ducts... which is all for nought unless you also climate control the antenna.    Which is all standard practice for precision geodesy.  Try to keep it all with a milli-Kelvin or two.  Oh, and don't forget about Lord Kelvin's sinister  step-sisters, humidity and pressure.  We won't get into all his second-order cousins.
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