[time-nuts] Austron GPS antennas

[paul swed]

A comment.
Indeed the odetics gpsstart down converter can also be made to work with the
austrons.
In the odetics case the 10 mc austron is multiplied to 40 mc that drives the
down converter and you get 75.42 out for the austron.
This is the way I was able to get my 2201a working.
Fleamarket special at $5. But no down converter.

So the rcvrs can be made operational again. Though some may have old enough
software that the rollovers an issue.
Though by manually telling it what sats to look at to start it still seems
to work after its acquired a sat and downloaded the almanac.
Regards
Paul
WB8TSL

On Fri, Aug 12, 2011 at 9:52 AM, Tom Van Baak <tvb at leapsecond.com> wrote:

> 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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