[time-nuts] housing multiple GPS timing receivers in the same box.

Alex Pummer alex at pcscons.com
Thu Feb 6 23:26:26 EST 2014


Hi
where is a good source of GPS receiver modules I need one which has 
10kHz output to phase lock a quartz oscillator

Thank you in advance
Alex

On 2/4/2014 9:32 AM, Brian Lloyd wrote:
> Get a signal splitter from minicircuits specifically designed with a
> passband tailored for GPS that has DC pass-through to power the antenna and
> LNA. If you can't find one that has DC pass-through then you will need to
> add a power injector to power the antenna/LNA.
>
> Here: http://www.minicircuits.com/pages/npa/ZAPD-2DC+.pdf
>
>
> On Tue, Feb 4, 2014 at 7:08 AM, mike cook <michael.cook at sfr.fr> wrote:
>
>> Hi,
>>    Till now I have been putting receivers in individual boxes. So to limit
>> the growing number of boxes, I want to put two Resolution-T SMT receivers
>> in one box, sharing power and antenna inputs. My question is " How best can
>> I share the antenna input, minimizing any interference between the
>> receivers?" . Will any interference matter? For example, I can easily
>> connect three bits of shielded coax in a "Y" , but will probably get
>> reflections from each receiver. As the cables will only be about 15cm long,
>> would it matter? How about the DC antenna supply? The antenna DC will NOT
>> be powering an antenna as it passes through a DC blocked splitter used to
>> share an antenna between most of my receivers. I might be able squeeze a
>> Mini-Circuits splitter in the box and DC-block both outputs but that may be
>> overkill.  What discrete circuitry might be a replacement? Will the "Y" do
>> it?
>>
>> Someone must have already succeeded with this type of config.
>>
>> Thanks in advance  for your input.
>>
>> Regards,
>> Mike
>>
>>
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>
>



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