[time-nuts] Re: LH "No usable sats"

[Bob kb8tq]

Hi

The normal approach to running any GPS module is to initially let it determine
what it’s location is. This process is called self survey. Many modules will let 
you save that location in the module. If you give a module a location that is
wildly inaccurate and lock in that location, the outcome will be a mess. What
sort of mess depends a lot on the module involved. 

Note that none of this is related to LH, it’s all going on in the GPS device that
LH is connected to.

Bob

> On Jul 8, 2021, at 10:00 AM, Admin <asmagal at fc.up.pt> wrote:
> 
> Chris,
> 
> Thanks for your comments.
> 
> However, how do you explain that having  changed the longitude (ONLY) from my position to the Seattle longitude, many satellites  are now received several AMU beyond 1.0?
> 
> A 2021-07-08 14:10, Chris Caudle escreveu:
> 
>> On Thu, July 8, 2021 4:30 am, Admin wrote:
>>> Now, I recognize my mistake. I shouldn't invoke LH
>> Lady Heather is a very full featured GPSDO management program.  Using that
>> for setting up your GPSDO is rarely a mistake, although it has so many
>> features it is sometimes difficult to find what you need.
>>> It is not enough to change the TZ and location, as I did.
>> How did you change the location?  Did you run the self-survey?
>>> seems to me that the signal strenght algoritm continues referencing to
>>> Seattle.
>> That makes no sense.  Signal strength has no location reference, it is
>> just a value returned directly from the GPS receiver that is displayed and
>> reported by LH.  There is no algorithm involved.
> _______________________________________________
> time-nuts mailing list -- time-nuts at lists.febo.com -- To unsubscribe send an email to time-nuts-leave at lists.febo.com
> To unsubscribe, go to and follow the instructions there.