[time-nuts] manual request: Austron 2201A

Brooke Clarke brooke at pacific.net
Thu Jul 19 15:49:51 EDT 2007

Hi Rob:

The Austron antenna is very straight forward.  A 10.0 MHz ref is sent up the 
coax along with 15VDC.  The antenna multiplied by 50 and uses the 500 MHz to 
drive a harmonic mixer thus subtracting 1500 MHz from L1 leaving 75 MHz to go 
down the coax.  Simple and clean.

There must have been some special consideration that caused Quantic to use such 
a strange scheme.

Have Fun,

Brooke Clarke

Rob Kimberley wrote:
> Hi Brooke,
> Good to hear from you.
> The Austron 2029A used 10 MHz LO and a 75.42MHz IF. Power was 15VDC at
> 175mA.
> The manual I have is pretty thin - no schematics just a spec block diagram
> and an installation guide. Will email you block diagram directly.
> Rob
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Brooke Clarke
> Sent: 19 July 2007 18:22
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] manual request: Austron 2201A
> ); SAEximRunCond expanded to false
> Errors-To:
> time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com at febo.c
> om
> Hi Rob:
> I have an Quantic Q5200 GPS receiver that needs a special down converting
> antenna and have never seen one.  I've thought of making one, but don't have
> enough information for the design.  Does the 2029A manual have a block
> diagram or other design information?
> The Q5200 sends both +15 Vdc power and a 11.114 MHz reference frequency up
> the cable to the Antenna Module. The Antenna Module receives the satellite
> L1 frequency and down converts the signal to an IF of 153.028 MHz which is
> sent down the cable to the receiver.  http://www.prc68.com/I/Q5200.shtml
> But how is a mystery.
> Have Fun,
> Brooke Clarke
> http://www.PRC68.com
> http://www.precisionclock.com

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