Nice write up Paul. I am very happy with the VK3YE AGC. It provides just the right amount of AGC action for my tastes and after many hours of operating with it in all kinds of band conditions I have not heard it do anything annoying. I put a switch in series with the LDR so I can turn the AGC off but it is always on.
I built my rig from scratch in a modular fashion and that audio board with Peter's AGC will surely get reproduced and used in my future projects.
Your white LED probably works as well or even better than the red one I used. The LED and LDR I used are:
http://www.taydaelectronics.com/led-5mm-red-water-clear-ultra-bright.html
73 - Jerry W0PWE
