[time-nuts] Austron GPS antennas

k4cle at aol.com k4cle at aol.com
Thu Aug 18 21:49:07 UTC 2011

Hi Magnus, thanks for that information.  I had forgotten about that Plessey  
GP2010 and GP2015 RF chip.  The only problem is that you have to do a divide  
by 7 on the 40 MHz signal that Plessey did in the GP2021 correlator IC.   
Using an old SuperStar RX is a good reconmendation.  Thanks.  Doug, k4cle.

Connected by DROID on Verizon Wireless

-----Original message-----
From: Magnus Danielson <magnus at rubidium.dyndns.org>
To: time-nuts at febo.com
Sent: Thu, Aug 18, 2011 18:00:14 GMT+00:00
Subject: Re: [time-nuts] Austron GPS antennas

On 18/08/11 16:11, Rob Kimberley wrote:
> Yes, 35.42 MHz.
> Don't know what levels are required. However, I do know that Meinberg's
> model GPS-ANT is compatible.

It is expected from the use of the Zarlink frontend chip, which takes 10 
MHz, locks a 1400 MHz oscillator to it, divides it down by 10 to 140 MHz 
which is then used for first and second LO.

Thus, 1575,42 MHZ becomes 175,42 MHz and then 35,42 MHz.

You could hack a GPS module with the GEC Plessey/Zarlink frontend to 
achieve this.


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