[hpsdr] Fwd: 1, 2, 3, 4, 5, 6, 7....

[Werner Karn]

Simon,  you may want to try to run 2 Thunderbolts against each other and
measure any phase drifts of the 10Mhz signals over one or two hours with an
oszilloscope every 10 minutes or so...

2012/7/27 Simon HB9DRV <simon at hb9drv.ch>

> ***** High Performance Software Defined Radio Discussion List *****
>
> Since yesterday afternoon position and altitude rock-solid, not even a mm
> difference.
>
> Simon Brown, HB9DRV
> http://sdr-radio.com http://dit-dit-dit.com
>
> You are standing at the end of a road before a small brick building. Around
> you is a forest.
> A small stream flows out of the building and down a gully. The sunspot
> count
> is 285.
>
>
> -----Original Message-----
> From: hpsdr-bounces at lists.openhpsdr.org
> [mailto:hpsdr-bounces at lists.openhpsdr.org] On Behalf Of Alberto I2PHD
>
> Have you checked the altitude too ? My Thunderbolt tells me that from the
> morning to the evening of the same day
> my house moved up and down by almost 30 meters.... :-)   and the antenna is
> firmly attached to one of the chimneys....
>
> I guess that is one of the reasons why GPS is not used on any aircraft, at
> least as an altitude measuring device...
>
> --
> /*73 Alberto I2PHD*/
>
>
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