[App_rpt-users] RTCM with GPS

[Chuck Henderson]

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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