[time-nuts] GPS Antenna -Receiver Mutual Interference...

Rob Kimberley rk at timing-consultants.com
Mon Jan 3 15:59:24 UTC 2011

Yes, I've seen this. On installations in the past, when we were putting up
dual GPS systems, we always put them at least 10 metres apart. What is
actually best practice, is to put one at one end of building and the other
one at the other end. 

Rob Kimberley

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Mark J. Blair
Sent: 03 January 2011 2:19 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] GPS Antenna -Receiver Mutual Interference...

On Dec 30, 2010, at 6:53 PM, Burt I. Weiner wrote:
> Has anyone run into a situation where two GPS Navigation type
Antenna/Receivers interfere with each other?

It's possible that LO leakage from one is jamming the other. When doing
mobile GPS receiver testing at work with a single antenna feeding multiple
receivers through a splitter, we sometimes had to insert attenuators in each
receiver's antenna feed to keep them from jamming each other.

Mark J. Blair, NF6X <nf6x at nf6x.net>
Web page: http://www.nf6x.net/
GnuPG public key available from my web page.

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