There are several problems. First energy from the offending signal leaking
into the protected GPS band and second the GPS receivers having a bandwidth
greater than the protected GPS band in order to reduce phase errors, acquire
GPS signal energy present outside the protected GPS band to have a higher
bandwidth signal, and to reduce production costs. The GPS industry is part
of the problem.
I firmly believe the protected band needs to be increased. I will always
favor better time and frequency dissemination over social networking.
John WA4WDL
--------------------------------------------------
From: "Bob Bownes" <bow...@gmail.com>
Sent: Friday, September 30, 2011 11:11 AM
To: "Discussion of precise time and frequency measurement"
<time-nuts@febo.com>
Subject: Re: [time-nuts] GPS Interference Question
Exactly. The narrower the filter, the more it will cost. In general.
On Fri, Sep 30, 2011 at 11:10 AM, Tom Holmes <thol...@woh.rr.com> wrote:
Sticking with the intent to keep this non-political, what good is a
filter
if the offending signal is within the necessary passband?
Tom Holmes, N8ZM
Tipp City, OH
EM79
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