On Jan 25, 2012, at 12:14 PM, Bob Macklin wrote: > Is there a problem modifying BC transmitters to operate on 160 to 75? Not for 160, but it can be an issue above 2.5 MHz for the FETs. 73, Kevin Raper KJ4HYD CE WCKI WQIZ WLTQ There is no limitation to the fidelity of AM radio. From a mathematical standpoint, AM does better in frequency response than FM. - Leonard Kahn