[App_rpt-users] RTCM with GPS

[Jeff Carrier]

Hi Chuck,

The network is solid from what I can tell.  See the smokeping graph
attached.  This is the uW shot between the 2 sites.



On Fri, May 1, 2015 at 5:18 PM, Chuck Henderson <
rpt2 at chuck.midlandsnetworking.com> wrote:

> I don't think that you said, but I will assume that you are using the
> Garmin GPS and that you have it located where it has a clear view of the
> sky and that you have it cabled correctly and with the correct settings, up
> to date firmware in the RTCM, etc...  Most likely IMHO, you have a network
> problem on your Ethernet or your network between your RTCM and your
> computer.  I have found that if there are lots of errors, collisions,
> re-transmissions and the such on the network, the RTCM just looses track of
> the GPS.  Fix the network problem and the GPS will mysteriously start
> working great.
> Chuck Henderson, CCIE2285, WB9UUS
>
>
> On Fri, May 1, 2015 at 5:39 PM, Jeff Carrier <k0jsc.jeff at gmail.com> wrote:
>
>> Ok i've had pretty wide variation of replies.  When I see GPS drop and
>> restore on the console it always indicates 10 satellites in view.  I'm
>> assuming the RTCM is looking for 10.
>>
>> On Fri, May 1, 2015 at 3:06 PM, Mike Tubby <mike at tubby.org> wrote:
>>
>>>
>>> For a 2D fix you need a minimum of 3 satellites
>>> For a 3D fix you need a minimum of 4 satellites
>>>
>>> Beyond this "more is better".
>>>
>>> HTH
>>>
>>> Mike G8TIC
>>>
>>>
>>> On 01/05/2015 20:41, Jeff Carrier wrote:
>>>
>>> Does anyone know how many satellites are required for a good GPS lock.
>>> I keep losing lock which is causing me to lose the system.
>>>
>>>
>>>  K0JSC
>>>
>>>
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