-33 DBM input - ATT and Preamp Off.  RF Gain aound 11 O'Clock - AF gain around 8 O'clock.  This is probably
what people had in mind for the types of signal strength you would see with these settings.

Same as above - with -73 dbm signal:

This is interesting to me as you see the noise rise within the filter bandwidth.  Something is trying to do AGC
on the signal - but isn't toally effective (probably because the RF gain is set back so far).  

Now to the 1 uV signal:

Pretty much what I expected - no signal - and the increased noise level in the passband is still there.  Note that
the shape of this noise would sound exactly like band noise since it has the same shape as the filter.

Sending !EF01; or !EF02 to the radio causes unstable operation.

Playing with the !8Exx command show this (1 microvolt - RF gain wide open):

!8E00:

!8E30:

!8E7F:

I would say this shows something promising.

Tree 03-Dec-2011