[R-390] Signal Generator findings - .02 microvolt

[Drew Papanek]

Joel Richey wrote:

>furthermore, unless you live on the moon that amount of
>sensitivity would be usless on the freq covered by the R390 series.

...to which Kenneth G. Gordon responded....

>I disagree. Although IN GENERAL what you say is true, there are times when 
>0.02 microvolt sensitivity comes in very handy.

Atmospheric noise at HF almost always exceeds those fractional microvolt 
levels, particularly when the antenna resembles anything superior to an 
isotropic wet noodle.

Where the sensitivity comes in handy, however, is for use with antennas 
having poor signal-gathering ability.   Shielded loop antennas would fall 
into that category.  The shielded loop can offer good interference-nulling 
capability and freedom from susceptibility to e-field hash and trash that is 
generated by computers, compact fluorescent lights, and virtually all other 
consumer electronics so prevalent and unavoidable in the vicinity of our 
listening environment.

Drew