[time-nuts] Austron GPS 2201a ops and serv manual uploaded to KO4BB site

[paul swed]

OK the updates.
The issue is the 2201 is a 75.42 Mhz IF and most of these alternates are
35.42. Hmmm sounds like adding 40 Mhz gets you the answer.
Thats exactly what I did with the odetics converter from Pete L.
Took 10 Mhz from 2201 4 X to 40 mix with 35.42 buffer and send to the 2201.
Locks like a champ.
I feel the RF chain is not all that reproducible and could be improved. So
though it works through Dougs support I have been trying out the novatels
that also have a 35.42 IF. They have one other nice feature a derived 40
Mhz pecl signal. So first attempt uses a soic pecl to ttl converter driving
a sa612 mixer and then a buffer...
However this requires a tap off of the 35.42 Mhz saw IF filter and then a
lot of gain.
The Novatel also puts out a much amplified 3.90Mhz IF.
This created a 3rd converter approach. 3.9XX + 71.111 Mhz mix and deliver.
this is a very nice approach but at this moment I have to use a significant
lock sig gen for the 71.111 Mhz.
Last item with the 2201 there really is not a C/N ratio or signal strength
to have any clue if A is better then B or C. Makes it sort of tough because
B and C do work. I just suspect they are worse then A.
Regards
Paul.

On Wed, Mar 14, 2012 at 6:38 PM, paul swed <paulswedb at gmail.com> wrote:

> There seems to be a strong likelihood that the 2201 is compatable with the
> mienburg. Thats what I believe Doug actually has. If there some detailed
> info in  your link I will take a look.
>
>
> On Wed, Mar 14, 2012 at 1:38 AM, <bg at lysator.liu.se> wrote:
>
>> Paul,
>>
>> > Thanks to Doug above I am trying two methods to use a Novatel starview
>> > receiver that also puts out a 35.42 Mhz IF. The methods have to do with
>>
>> A small typo:  Starview is the evaluation software used to run the legacy
>> CMC (Canadian Marconi) line of receivers - Allstar, Superstar and
>> Superstar II.
>>
>> Would the Austron be compatible with the current Meinberg downconverting
>> antenna?
>>
>>    http://www.meinberg.de/download/docs/manuals/english/gpsant.pdf
>>
>> --
>>
>>     Björn
>>
>>
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>
>