there has to be a large pool of former Morse intercept operators (Army Security Agency, Naval Security Group, Air Force Security Service)out there near retirement or that are retired, that remember how to spin a dial on an R390....could probably pick up the use of a bug pretty easily...most of the work though was HF and I haven't seen a ANFLR9 in a lot of years...they did a great job copying Morse hours on end...glad all I had to do was figure out what it was they copied