[time-nuts] Comparing PPS from 2 GPS units
bruce.griffiths at xtra.co.nz
Tue Dec 18 05:59:22 UTC 2012
Hal Murray wrote:
> jimlux at earthlink.net said:
>> You mean RG65 http://www.awcwire.com/ProductSpec.aspx?id=M17/
>> 34-RG65-Coaxial-Cable or RG186 http://www.awcwire.com/ProductSpec.aspx?id=RG1
> Interesting stuff. Thanks.
> RG-65 says no longer available. It also says:
> Coaxial Delay Line 0.15 uSec/ft
> (Am I having troubles counting zeros, or is that seriously slow?)
> Nom. Imp. 950
> Vel. of Prop. 2 (no units)
> Cond. Material Magnet Wire Helix
> (What is "magnet wire", and what does "helix" mean and how does it effect
Magnet wire is enamelled wire (usually copper).
> RG186 says:
> Shield Material Magnet Wire [What does that mean?]
> Nom. Imp. 1000
> The cable on scope probes (at least fancy ones) has a tiny conductor. I
> think that translates into high impedance.
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