

Ok, so your a HAM.   Well, tune in 10.7Mhz or 455Khz.  These numbers sound 
like some you have herd before?   Thats right, you guessed it, they are 
common IF numbers.   Every Super-Het receiver has a local oscillator(s)
which generates an IF.  This is what your detector detector is detecting (the
local oscillator). 