RE: PT-40
w9nl,
Welcome to RCUniverse and back to the hobby.
The PT-40 was a great trainer back then and is just the same as today. The PT-40 with something like an OS .46 will work great for you. Take your time and do some research to find the radio you want and you'll be set.
I would highly recommend going to [link=http://www.modelaircraft.org/clubsearch.aspx]AMA's website [/link] to locate a club near you if you haven't found one yet. They can set you up with a flight instructor and get you flying next spring.
Hogflyer