[time-nuts] A few questions about Tboltmon

Chris Waldrup kd4pbj at gmail.com
Thu Aug 6 14:06:29 EDT 2015

Thank you to all. 

I will check these items and report back to the group what I found. 

The antenna is up in the clear and I am feeding it with somewhere in the range of 60-75 feet of RG 6 quad shield. 


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On Thu, Aug 6, 2015 at 12:21 PM, Chris Albertson
<albertson.chris at gmail.com> wrote:

> On Wed, Aug 5, 2015 at 7:16 PM, Chris Waldrup <kd4pbj at gmail.com> wrote:
>> Hi,
>>  But when I unplugged the AC power from the Thunderbolt and plugged it
>> back in, I was back to six satellites.
>>  I had thought that the GPS satellites I am able to see from my location
>> are fixed 24/7. Do they move and different satellites come into view with
>> rotation of the earth?
>> I did a warm reset when I got up at 4:45 this morning and when I got home,
>> four satellites were still green on Tboltmon. About an hour ago I went
>> ahead and did a cold reset.
>> I now have 6 satellites where the SV is green, and one with a yellow SV
>> with a value of 7.0.
> They are in 12 hour orbits.  Each satellite is visible twice for a few
> hours each day.  But there are enough of them that a six channel receiver
> should always see six and a 12 channel receiver should always see 12 unless
> you have part of the sky blocked or some other problem with the antenna.
> Can your antenna see the horizon in all directions 360 degrees?  What's the
> gain of the antenna and how is it connected to the receiver (what kind of
> cable and how long is it?)  Is the antenna getting power and the correct
> number of volts?
> I see the comment about the survey, that has more to do with accuracy then
> seeing satellites.  But do let it run for a good long time before you
> decide if it is working well or not.  Wait until after 12 hours then take a
> look.
> -- 
> Chris Albertson
> Redondo Beach, California
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