I'm working on a personal project. Going to build a small AM transmitter. The goal is to be able to pick up the audio broadcast from my laptop, at various areas around the house with AM radios. I have purchased a crystal oscillator from ebay. http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=140176560438&ssPageName=ADME:B:EOIBSA:CA:11#ebayphotohosting [Broken] Not sure if that link will work. The crystal oscillator has a frequency of 1.544 mHz. I'm wondering how I would go about determining the optimum voltage for a crystal of this frequency. Also how could I determine the range? Are there any simple formulas for calculations like this? Its going to be a pretty simple circuit but I'm open to suggestions additional components and any other information on how i could make the circuit better. I plan to buy some battery holders, 6 volt and 9 volt probably, a breadboard, some alligator clips, jumper wires for the bread board and I might need some alligator clips too.