The "oven" is for keeping a cup of coffee warm while talking on 160 meters
on a cold winter night....
Actually..the oven keeps the timebase osc. stable (once it gets to temp). 2
inputs...more than likely it has a direct and prescale input...Eddie

"Sam Bradshaw" wrote in message
om...
Hi All,
I just ran across an old DSI 3600A frequency counter at an......

KB8ZZS.