Its nice to see some life on this forum I was about to give up due to the older posts. I have only owned an Ultimate B3 Frequency Generator it is a 2.4 MHZ Sweep Function Generator. It is currently over 10 yrs old, I do not know how it stacks up to all the latest machines on the market. In fact I am lost as to what I could upgrade to that compares. Also is there anything out there that would fight infections etc thats affordable for someone on a tight budget? Thanks for any help.