I have been using AGWPE free version for several years, and I like it. I downloaded and installed Packet Engine Pro and it is so much more. It will be worth the $49 to register. To setup a port with a TNC or sound card is easy and straight forward. I am experimenting with a couple of Paccom tnc’s. I now have several new TINY2 MK2 and Sprint-2 tnc’s. I want to see how these compare to sound card 1200 and 9600 baud. I will be running the Pro version on my Winlink gateway.