Re: [time-nuts] GPS over fiber

2012-09-24 Thread ed breya
That would certainly provide good distance capability and isolation, but there may be a severe penalty in signal to noise ratio (and some non-linearity) due to converting to optical and back. It may be worthwhile considering the specs of the overall E-O link versus the extra gain and SNR or NF

Re: [time-nuts] GPS over fiber

2012-09-24 Thread Tom Knox
Using my Aeroflex GPS simulator and Agilent ENC analyzer I could see no noticeable effect on S/N. But these signal are near the analyzers limit. Best Wishes; Thomas Knox Date: Mon, 24 Sep 2012 16:41:42 -0700 To: time-nuts@febo.com From: e...@telight.com Subject: Re: [time-nuts] GPS over

[time-nuts] GPS over fiber

2012-09-14 Thread Tom Knox
I may have the opportunity to bulk purchase several Very high end GPS over fiber systems. This system is great if you have a long cable run; or in my case, to isolate my Time and Freq system from lightning strikes. I understand they are two Antenna systems and they will work with any antenna

Re: [time-nuts] GPS over fiber

2012-09-14 Thread Azelio Boriani
GPS over fiber is GPS RF signal over fiber or the PPS over fiber or something else? On Fri, Sep 14, 2012 at 7:12 PM, Tom Knox act...@hotmail.com wrote: I may have the opportunity to bulk purchase several Very high end GPS over fiber systems. This system is great if you have a long cable run;

Re: [time-nuts] GPS over fiber

2012-09-14 Thread Tom Knox
:36:48 +0200 From: azelio.bori...@screen.it To: time-nuts@febo.com Subject: Re: [time-nuts] GPS over fiber GPS over fiber is GPS RF signal over fiber or the PPS over fiber or something else? On Fri, Sep 14, 2012 at 7:12 PM, Tom Knox act...@hotmail.com wrote: I may have the opportunity