Hi, I am looking for information about a Frequency Electronics Rubidium instrument. The 19 inch instrument is model FE-5608A, it contains a 28V PSU (broken), a 10 MHz RB-oscillator model FE-5607 (no output), some amplifiers and a 5MHz VCXO model FE-2204A (seems to work). Anyone familiar with the oscillators (FE-5607 and FE-2204A)? Thanks, Björn