i am looking for a VCO that can output a wide frequance band from a few kHz to as high as i can get, actual freqance doesnt realy matter, I have looked on mouser, digi key, farnell and rs but they all seem to have a pretty narrow frequancy range. what ineed o do is sweep a an Lo frequancy through an RF mixer so i can pick out specific frequancies from the RF. some help would be greatly apreciated.