I need a manual or copy thereof for the above signal generator. It was manufactured by RA-NAV Laboratories, covers 3Hz to 1 MHz 0-40 volts P-P. A very nice unit in a small package. I tried the manufacturer; however like so many others they just said "We no longer support this unit". They still picture it on their website but they couldn't care less. Any help appreciated. Perry 73 KC7ZEE