[GreenKeys] Simple PLL TU

[hwhall@aol.com]

 Long ago I tried a simple phase locked loop very similar to that. It did not perform well in the ham bands, probably due to poor signal to noise inputs. 
WayneWB4OGM
    On Tuesday, October 1, 2024 at 01:43:02 PM MDT, Ken LoCasale <wa4mnt at gmail.com> wrote:   

 Gang,

I found a simple two IC terminal unit for anyone that might want to try 
mechanical rtty on a budget. I think I'll layout a board and give it a 
try. Has anyone else seen it before and given it a try?

I put the .pdf here. https://qrpbuilder.com/simple-pll-terminal-unit

ken - wa4mnt
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