(no subject)

hi list

I ve a very basic doubt in the output FFt plot of frequency
translation.if i do frequency translation i should get two peaks at
f1+f2 and f1-f2.i get this output when i keep my output at float. And
when i change the type to complex i am getting only f1+f2.can anybody
tell why is it so?and one more thing which i want to know i want to
store the output value in a temporary and later use it.is it possible
to do so in GRC?