[time-nuts] Thermal effects on cables

Ole Petter Ronningen opronningen at gmail.com
Fri Jan 13 02:01:37 EST 2017


I should have mentioned this in the original post - the measurements were
not taken on the same cable length. Beware, and consult paper.

Ole

On Fri, Jan 13, 2017 at 7:52 AM, Ole Petter Ronningen <opronningen at gmail.com
> wrote:

> Hi, all
>
> The question of phase shifts in cables pops up every now and then on this
> list - I stumbled across a good table of measured phase shifts with
> temperature in different cable types in this paper:
> http://www.ira.inaf.it/eratec/gothenburg/presentations/ERATEC_2014_
> PresentationWSchaefer.pdf that I though would be of interest to others.
>
> A quick summary given below, see pdf for full details. Lots of other
> interesting stuff in there also.
>
> Values in ppm/K, for 10 Mhz except when otherwise stated. (The paper gives
> values for 5, 10 and 100Mhz)
>
> Huber-Suhner Multiflex 141: -6
> RG-223: -131.9
> Semiflex Cable: -11.5
> Huber-Suhner: -8.6
> Times Microwave LMR-240: -3.4
> Times Microwave SFT-205: 7.7
> Meggitt 2T693 SiO2: 30.6
> Andrew FSJ-1 (@5Mhz): 25
> Andrew FSJ-4 (@5Mhz): 10
> Andrew LDF-1P-50-42: 2.8
> Andrew LDF4-50A: 4.7
> Times Microwave TF4FLEX (@100Mhz):6.4
> Phasetrack PT210 (@100Mhz): 2
>
> Ole
>


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