[hpsdr] Excalibur

[wully]

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

 1303501705.0