[time-nuts] time-nuts Digest, Vol 31, Issue 21

[Rob Kimberley]

Interesting paper. I agree that for nanosecond timing applications then
antenna cable and matching are important. However, for frequency sync
applications and non-critical timing, then the effects of the 75 vs. 50 ohm
cable will not be noticeable.

Rob K 

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Dr Bruce Griffiths
Sent: 07 February 2007 02:25
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] time-nuts Digest, Vol 31, Issue 21

Christopher Hoover wrote:
>> Those who maintain that its OK to use 75 ohm GPS antenna cable should 
>> read:
>> http://tf.nist.gov/timefreq/general/pdf/1380.pdf
>>     
>
> (I think you pasted the wrong URL.)
>
> While I provided the quote from the Thunderbolt manual that said, 
> according to Trimble, that 75Z coax is fine, I have Times LMR-400 to 
> my HP 58532A, which stands proudly way above the roof line.
>
> I just want to make sure my reputation as a certified time nut remains
> intact.   ( totally: :-) )
>
> -ch
>
>
>
> _______________________________________________
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>
>   
Chris

Try:

http://tf.nist.gov/timefreq/general/pdf/1384.pdf



Bruce
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