[time-nuts] Austron GPS antennas

Rob Kimberley rk at timing-consultants.com
Thu Aug 18 14:11:07 UTC 2011


Yes, 35.42 MHz. 
Don't know what levels are required. However, I do know that Meinberg's
model GPS-ANT is compatible.

Rob Kimberley

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of k4cle at aol.com
Sent: 18 August 2011 2:54 PM
To: Tom Van Baak; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Austron GPS antennas

Can someone confirm what the downconverted frequency is for an Odetics
GPStar?  I have been told that it is 35.42 MHz. but I would like to get
confirmation of that before I build my converter.  Thanks, Doug - k4cle.

Connected by DROID on Verizon Wireless

-----Original message-----
From: Tom Van Baak <tvb at LeapSecond.com>
To: Discussion of precise time and frequency measurement
<time-nuts at febo.com>
Cc: Roland Myers <timebeacon at gmail.com>
Sent: Fri, Aug 12, 2011 13:54:03 GMT+00:00
Subject: [time-nuts] Austron GPS antennas

Hi group.

I've been contacted by a helpful person who is willing to undertake a group
buy of Austron GPS antennas. Here is what he said:

   "If I can get enough interest, there's a real possibility that
   better-than-original Downconverter Antenna Units for Austron
   GPS can be manufactured for me.

   Applies to all known Austron GPS Receivers such as 2200,
   2200A, 2201, 2201A and variants.

   These units all send 15 volts and 10Mhz to the antenna unit
   which multiplies this and uses it to derive a local oscillator
   signal of 1500MHz in the antenna unit itself.

   1575.42MHz - 1500 MHz = 75.42MHz which is sent back
    down the coax from the antenna unit to the gps rx.

   (All these receivers are useless without the downconverter
   antenna - and there have to be lots of 'em in the hands of
   time nuts)"

If you have questions or are interested in participating, please contact
Roland directly at timebeacon at gmail.com

Thanks,
/tvb


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