hi Frank,
If you really want to broadcast the frequencies MOST effectively, study the material of Dr. Royal Rife. He used a plasma tube to sent out frequencies in square waves.
You can build such a device yourself, combining the Frex software, a PLC (Novelty Plasma Lamp Controller) and a Plasma lamp. Or simply buy a good rife machine.
Check out this site:
http://heal-me.com.au/
greetings
Paul