[R-390] Lankford AGC Mod ?

[Scott, Barry (Clyde B)]

Well, I was introduced to the AGC circuit in 1998, so I have 30 years of catching up to do.  No, I don't understand howit works or why these mods affect SSB clarity.  I plan to study that one day as well as that RMS with a diode thing as well.

Sorry I'm not more help.  I just like kicking the beehive every now and then...

Barry - N4BUQ

<snip>

Scott Barry,

I did not understand all that 6080 and RMS thread,
I am still working on some of that mail myself
An I have some questions about that.
But the sound of my R390/A is of more interest to me today.

If what you say below is true (It is ain't it ? <;) )
where are we injecting in the AGC  circuit?

I was introduced to that AGC circuit in 1968 and I still do not
understand all the interaction of SSB and AGC in the R390/A.

There is even the Audio derived AGC mod for the R390.

Why does smacking the receiver gain around at an audio rate
that follows the voice power change the perceived clarity of SSB?

I do agree that SSB sounds best in the OFF setting.

But It is there and some times I do indulge in it.

Roger. KC6TRU