[time-nuts] GPS Antenna - was receivers in the same box.
SAIDJACK at aol.com
SAIDJACK at aol.com
Wed Feb 5 19:29:26 UTC 2014
Guys,
on this subject, we put together and qualified a convenient and complete
(fairly) low-cost timing-compatible GPS antenna kit that includes all the
mounting materials, 150 feet of cable, all the connectors, and down to the
last screw, nut, and bolt everything one would need to mount the antenna.
Only standard tools are required for the installation.
Compatible to any L1 GPS receiver, works from 2.5V to 5V. We get up to
52dB C/No with 150 feet of cable on our uBlox GPS receivers with this antenna,
and the antenna cable length can be easily extended with F-connectors on
both sides.
This was done because so many people had problems getting all the parts to
put an antenna together and called us for pointers to antenna kits (which
we could not find), and we went out and bought all the different pieces
needed to do so and put these together as a kit.
Check out the _www.jackson-labs.com_ (http://www.jackson-labs.com) website
if interested. 10% Time-Nuts discount (one unit per person) - $241.20 per
kit w/o the lightning arrestor. A bit more pricey when the antenna
lightning surge protector is included which is mandatory for any outdoor
installation. I know this is more than what you would pay for a used antenna on Ebay,
but we are not really making any money on this, we are pretty much selling
it as a convenience to our customers. Please contact us off-this-list if
interested.
bye,
Said
In a message dated 2/5/2014 09:46:27 Pacific Standard Time,
n1hac at dartmouth.edu writes:
As has been discussed before, a splitter intended for home satellite
systems is a cheap solution as they have the bandwidth and the DC pass
required. I have one between a couple of Thunderbolts. It powers the
antenna and shows antenna OK on both. Using a splitter is better than
just a T as it does lend some isolation between the receivers.
David
On 2/4/14 4:50 PM, mike cook wrote:
>
>
> Le 4 févr. 2014 à 22:35, Volker Esper a écrit :
>
>>
http://www.ebay.de/itm/HP-58516A-GPS-1-4-signal-Distribution-Amplifier-Splitter-N-type-/300997787447?pt=US_Ham_Radio_Receivers&hash=item4614ddbf37
>>
> I think I should have said that my box is only 25mm high. So any
splitter will have to be less. A Mini Circuits splitter will just about do it ,
but I would prefer a smaller solution.
>
>
>>
>> Am 04.02.2014 14:08, schrieb mike cook:
>>> 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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