[R-390] R-390/R-390A AGC for SSB, fix to Dr. Lankford's 2 diode mod update

[Larry H]

Al has put the subject document on the 390 disk.  Here's a link to it:

http://r-390a.net/R390A%20Fix%20Lankford%202%20diode%20SSB%20AGC.pdf

and a link to the 'tutorials' section it's listed in:

http://r-390a.net/faq-refs.htm#Tutorials

Regards, Larry