[DSP-10] KDSP-10 interface module

[wa7gxd]

Hi!

> ...Note that the DAC
> output leads are passed through two 10mH RF chokes then to
> the feed through's. 

I need to update the website, which I will do upon my return
from Uganda. In the meantime, note that the 10 mH chkes are
*NOT* required.

There was a problem in some early DSPx modules where the
1.8V regulator would oscillate at around 200 kHz.  In
extreme cases, the DSPx would be dead.  In other cases, it
would have popping or other noises in the DAC output.  This
was the case with the prototype unit Bob Larkin had when he
ran the original DSP-10 tests with the DSPx/KDSP10.  Once we
found and cured this, the chokes were no longer needed.

73,

Lyle KK7P (in Uganda www.aidchild.org)
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