[hpsdr] Excalibur

Graham / KE9H KE9H at austin.rr.com
Fri Apr 22 16:20:33 PDT 2011


Alfred:

Thank you for letting us know the end to the story.

Enjoy your Excalibur.

--- Graham

==

On 4/22/2011 2:48 PM, wully wrote:
> Hi Graham
>
> Yesterday I have been at the University Zürich, where Achim, 
> DH2VA/HB9DUN has measured and adjusted my frequency references, using 
> GPS-locked Rubidum references. The following results have come out:
>
> 1) The DCF-77-Reference was indicating a "Lock", but infact is was not 
> at the 10 MHz! We had to trim the unit. Finally it locked, but the 
> stability is not convincing.
>
> 2) The Excalibur is ok: it is fully adjustable into 10MHz +-1Hz as 
> specified. The comparison with the unlocked DCF-77 reference was the 
> reason, that I could not trim Excalibur.
>
> 3) After adjusting both units, the Excalibur Leds switch slowly from 
> green to red to green ..., so, all is ok now. Even after switching off 
> power and switching on again, both units are withing 10MHz +-1Hz.
>
>  Thank all for their respective suggestions and help.
>
> The next step I will do, is to buy a LPRO-101 through eBay.
>
> 73, Alfred, HB9EPU
>
>


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