[time-nuts] New NTBW50AA

Bob Stewart bob at evoria.net
Wed Sep 11 13:21:57 EDT 2013


I can testify to Warren's comments. I've got an Adafruit Breakout Board that I hook up to my computer from time to time, and it marches all around the neighborhood on the map looking for my house.  =)  Eventually my timing antenna will go up in the attic, just under the peak.

Bob - AE6RV




>________________________________
> From: WarrenS <warrensjmail-one at yahoo.com>
>To: Discussion of precise time and frequency measurement <time-nuts at febo.com> 
>Sent: Wednesday, September 11, 2013 12:10 PM
>Subject: Re: [time-nuts] New NTBW50AA
> 
>
>
>Dave
>
>With your GPS Antenna sitting underneath all those multipath reflectors (the other antenna's above it),
>That is far from optimal from a time-nut standpoint if you are trying to get the best performance possible.
>Should strive for no metal or reflective surfaces above the GPS antenna in any direction.
>
>ws
>
>*********************
>
>----- Original Message ----- From: "quartz55"
>To: "Discussion of precise time and frequency measurement" <time-nuts at febo.com>
>Subject: Re: [time-nuts] New NTBW50AA
>
>
>Thanks Charles,
>
>I'm not certain myself it it's the temp chip or the way LH handles the information.  It doesn't matter like you say, there's no use doing any measurements with the unit unlocked.
>
>Otherwise here is a trace while I moved the antenna.  Any comments on how it reacted in holdover?
>http://i251.photobucket.com/albums/gg287/DogTi/time/holdover_zps35d7e81b.jpg
>And here is where the antenna is now, this is looking straight north, so the sky behind me is nearly clear to the horizon and straight up isn't bad either.
>http://i251.photobucket.com/albums/gg287/DogTi/time/gpsant_zps2963365a.jpg
>
>Dave
>N3DT
>
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