[time-nuts] Delay through GPS antenna splitter/amplifier -- an answer, and a question

[Hal Murray]

>>> So the cable delay should be a multiple of 317.375...ps.
>> What's the thermal coefficient of coax?
>Typically around 50-100ppm/C depending on the coax.
> High velocity cables have lower tempcos

Handwaving...

100 ft of cable is 70ns or 70000ps.
100ppm is 7ps.
10C is 70ps.

So if you start out right, you will stay close but not right-on.

I'm assuming the cable runs outside where the temperature isn't controlled.

How much of your gear has a sticker on the front telling you how many ps 
between the connector and the internal terminator?


-- 
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