[time-nuts] Javad Letter to FCC...

Brian, WA1ZMS wa1zms at att.net
Wed Sep 26 01:00:54 UTC 2012


He seems to give no specs on group delay.
That is very critical for timing applications, but not much of an issue for
your iPhone if you don't mind yet another 10m of error.

My 2 cents...

-Brian, WA1ZMS

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Scott McGrath
Sent: Tuesday, September 25, 2012 8:23 PM
To: Discussion of precise time and frequency measurement
Cc: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Javad Letter to FCC...

Is he going to retrofit every GPS dependent device already in service for
free???

   I'm also suspicious of the steepness of the filter skirts.  They seem to
be too good to be true and I've looked at a lot of filters through multiple
VNA's and scalar analyzers

Ou

Sent from my iPhone

On Sep 25, 2012, at 9:59 AM, "Rob Kimberley" <robkimberley at btinternet.com>
wrote:

> <http://www.gpsworld.com/javad-asserts-filters-protect-gps-l1-l2-l5-gl
> onass-
> l1-l2-galileo-l1-l5/>
> 
> I'm wondering how much LightSquared are paying this guy?
> 
> Rob
> 
> 
> 
> 
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