The "economy" baby monitors use the 43-50MHz cordless phone band...walk around a neighborhood with a scanner scanning that limit will probably get you more baby monitors than phones these days. I was house-sitting last week in a suburban neighborhood and had to go out on the porch to light up--just for the hell of it, I fired up the Pro-94 and did a search--I didn't have to step off the porch to pick up three baby monitors and a ringing phone, and that was just searching 43-50...
I might add that there are apparently "deluxe" baby monitors that use 900Mhz frequencies, too.
I might add that there are apparently "deluxe" baby monitors that use 900Mhz frequencies, too.