[DSP-10] Power Levels

[Courtney Duncan]

I have a question for Bob or anyone who knows:

I've just made power measurements on my brickette and interpolated / 
extrapolated output levels for the DSP-10 itself.  Charts are at the 
bottom of

http://home.earthlink.net/%7Ejccool3/dsp10.html

A drive setting of 82, for example, produces about a watt from the 
Brickette and about a milliwatt from the DSP-10.  These results seem 
about right.

Does this mean that if I set the drive to around 52 I get a microwatt 
and if I set it to 22 I get around a nanowatt?

Chip Angle who probably lives around 20 miles from here might well get 
thrilled at the idea of twenty billion milles per watt QSO with me at 
setting 22, but I would have trouble believing that this was what we had 
actually accomplished without some independent measurement

Is this setting just a digital multiplication in software?  Do settings 
below 50 mean anything?  Would digitization distortion start to be 
noticable at these levels?  Has anyone been able to make QRPppp 
measurements or QSOs on a DSP-10?

Sorry if you've answered this before somewhere and I just missed it.

Courtney, n5bf/6